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android / platform / external / mesa3d / a130c33e886ac9aa1465575703e599ea4e3986c1 / . / src / mesa / main / fbobject.c
blob: e9997ccb778e512a4604a695226aae20e28d2d34 [file] [log] [blame]
/*
* Mesa 3-D graphics library
* Version: 7.1
*
* Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
* Copyright (C) 1999-2009 VMware, Inc. All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
/*
* GL_EXT/ARB_framebuffer_object extensions
*
* Authors:
* Brian Paul
*/
#include "buffers.h"
#include "context.h"
#include "enums.h"
#include "fbobject.h"
#include "formats.h"
#include "framebuffer.h"
#include "glformats.h"
#include "hash.h"
#include "macros.h"
#include "mfeatures.h"
#include "mtypes.h"
#include "renderbuffer.h"
#include "state.h"
#include "teximage.h"
#include "texobj.h"
/** Set this to 1 to debug/log glBlitFramebuffer() calls */
#define DEBUG_BLIT 0
/**
* Notes:
*
* None of the GL_EXT_framebuffer_object functions are compiled into
* display lists.
*/
/*
* When glGenRender/FramebuffersEXT() is called we insert pointers to
* these placeholder objects into the hash table.
* Later, when the object ID is first bound, we replace the placeholder
* with the real frame/renderbuffer.
*/
static struct gl_framebuffer DummyFramebuffer;
static struct gl_renderbuffer DummyRenderbuffer;
/* We bind this framebuffer when applications pass a NULL
* drawable/surface in make current. */
static struct gl_framebuffer IncompleteFramebuffer;
static void
delete_dummy_renderbuffer(struct gl_context *ctx, struct gl_renderbuffer *rb)
{
/* no op */
}
static void
delete_dummy_framebuffer(struct gl_framebuffer *fb)
{
/* no op */
}
void
_mesa_init_fbobjects(struct gl_context *ctx)
{
_glthread_INIT_MUTEX(DummyFramebuffer.Mutex);
_glthread_INIT_MUTEX(DummyRenderbuffer.Mutex);
_glthread_INIT_MUTEX(IncompleteFramebuffer.Mutex);
DummyFramebuffer.Delete = delete_dummy_framebuffer;
DummyRenderbuffer.Delete = delete_dummy_renderbuffer;
IncompleteFramebuffer.Delete = delete_dummy_framebuffer;
}
struct gl_framebuffer *
_mesa_get_incomplete_framebuffer(void)
{
return &IncompleteFramebuffer;
}
/**
* Helper routine for getting a gl_renderbuffer.
*/
struct gl_renderbuffer *
_mesa_lookup_renderbuffer(struct gl_context *ctx, GLuint id)
{
struct gl_renderbuffer *rb;
if (id == 0)
return NULL;
rb = (struct gl_renderbuffer *)
_mesa_HashLookup(ctx->Shared->RenderBuffers, id);
return rb;
}
/**
* Helper routine for getting a gl_framebuffer.
*/
struct gl_framebuffer *
_mesa_lookup_framebuffer(struct gl_context *ctx, GLuint id)
{
struct gl_framebuffer *fb;
if (id == 0)
return NULL;
fb = (struct gl_framebuffer *)
_mesa_HashLookup(ctx->Shared->FrameBuffers, id);
return fb;
}
/**
* Mark the given framebuffer as invalid. This will force the
* test for framebuffer completeness to be done before the framebuffer
* is used.
*/
static void
invalidate_framebuffer(struct gl_framebuffer *fb)
{
fb->_Status = 0; /* "indeterminate" */
}
/**
* Return the gl_framebuffer object which corresponds to the given
* framebuffer target, such as GL_DRAW_FRAMEBUFFER.
* Check support for GL_EXT_framebuffer_blit to determine if certain
* targets are legal.
* \return gl_framebuffer pointer or NULL if target is illegal
*/
static struct gl_framebuffer *
get_framebuffer_target(struct gl_context *ctx, GLenum target)
{
switch (target) {
case GL_DRAW_FRAMEBUFFER:
return ctx->Extensions.EXT_framebuffer_blit && _mesa_is_desktop_gl(ctx)
? ctx->DrawBuffer : NULL;
case GL_READ_FRAMEBUFFER:
return ctx->Extensions.EXT_framebuffer_blit && _mesa_is_desktop_gl(ctx)
? ctx->ReadBuffer : NULL;
case GL_FRAMEBUFFER_EXT:
return ctx->DrawBuffer;
default:
return NULL;
}
}
/**
* Given a GL_*_ATTACHMENTn token, return a pointer to the corresponding
* gl_renderbuffer_attachment object.
* This function is only used for user-created FB objects, not the
* default / window-system FB object.
* If \p attachment is GL_DEPTH_STENCIL_ATTACHMENT, return a pointer to
* the depth buffer attachment point.
*/
struct gl_renderbuffer_attachment *
_mesa_get_attachment(struct gl_context *ctx, struct gl_framebuffer *fb,
GLenum attachment)
{
GLuint i;
assert(_mesa_is_user_fbo(fb));
switch (attachment) {
case GL_COLOR_ATTACHMENT0_EXT:
case GL_COLOR_ATTACHMENT1_EXT:
case GL_COLOR_ATTACHMENT2_EXT:
case GL_COLOR_ATTACHMENT3_EXT:
case GL_COLOR_ATTACHMENT4_EXT:
case GL_COLOR_ATTACHMENT5_EXT:
case GL_COLOR_ATTACHMENT6_EXT:
case GL_COLOR_ATTACHMENT7_EXT:
case GL_COLOR_ATTACHMENT8_EXT:
case GL_COLOR_ATTACHMENT9_EXT:
case GL_COLOR_ATTACHMENT10_EXT:
case GL_COLOR_ATTACHMENT11_EXT:
case GL_COLOR_ATTACHMENT12_EXT:
case GL_COLOR_ATTACHMENT13_EXT:
case GL_COLOR_ATTACHMENT14_EXT:
case GL_COLOR_ATTACHMENT15_EXT:
/* Only OpenGL ES 1.x forbids color attachments other than
* GL_COLOR_ATTACHMENT0. For all other APIs the limit set by the
* hardware is used.
*/
i = attachment - GL_COLOR_ATTACHMENT0_EXT;
if (i >= ctx->Const.MaxColorAttachments
|| (i > 0 && ctx->API == API_OPENGLES)) {
return NULL;
}
return &fb->Attachment[BUFFER_COLOR0 + i];
case GL_DEPTH_STENCIL_ATTACHMENT:
if (!_mesa_is_desktop_gl(ctx))
return NULL;
/* fall-through */
case GL_DEPTH_ATTACHMENT_EXT:
return &fb->Attachment[BUFFER_DEPTH];
case GL_STENCIL_ATTACHMENT_EXT:
return &fb->Attachment[BUFFER_STENCIL];
default:
return NULL;
}
}
/**
* As above, but only used for getting attachments of the default /
* window-system framebuffer (not user-created framebuffer objects).
*/
static struct gl_renderbuffer_attachment *
_mesa_get_fb0_attachment(struct gl_context *ctx, struct gl_framebuffer *fb,
GLenum attachment)
{
assert(_mesa_is_winsys_fbo(fb));
switch (attachment) {
case GL_FRONT_LEFT:
return &fb->Attachment[BUFFER_FRONT_LEFT];
case GL_FRONT_RIGHT:
return &fb->Attachment[BUFFER_FRONT_RIGHT];
case GL_BACK_LEFT:
return &fb->Attachment[BUFFER_BACK_LEFT];
case GL_BACK_RIGHT:
return &fb->Attachment[BUFFER_BACK_RIGHT];
case GL_AUX0:
if (fb->Visual.numAuxBuffers == 1) {
return &fb->Attachment[BUFFER_AUX0];
}
return NULL;
/* Page 336 (page 352 of the PDF) of the OpenGL 3.0 spec says:
*
* "If the default framebuffer is bound to target, then attachment must
* be one of FRONT LEFT, FRONT RIGHT, BACK LEFT, BACK RIGHT, or AUXi,
* identifying a color buffer; DEPTH, identifying the depth buffer; or
* STENCIL, identifying the stencil buffer."
*
* Revision #34 of the ARB_framebuffer_object spec has essentially the same
* language. However, revision #33 of the ARB_framebuffer_object spec
* says:
*
* "If the default framebuffer is bound to <target>, then <attachment>
* must be one of FRONT_LEFT, FRONT_RIGHT, BACK_LEFT, BACK_RIGHT, AUXi,
* DEPTH_BUFFER, or STENCIL_BUFFER, identifying a color buffer, the
* depth buffer, or the stencil buffer, and <pname> may be
* FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE or
* FRAMEBUFFER_ATTACHMENT_OBJECT_NAME."
*
* The enum values for DEPTH_BUFFER and STENCIL_BUFFER have been removed
* from glext.h, so shipping apps should not use those values.
*
* Note that neither EXT_framebuffer_object nor OES_framebuffer_object
* support queries of the window system FBO.
*/
case GL_DEPTH:
return &fb->Attachment[BUFFER_DEPTH];
case GL_STENCIL:
return &fb->Attachment[BUFFER_STENCIL];
default:
return NULL;
}
}
/**
* Remove any texture or renderbuffer attached to the given attachment
* point. Update reference counts, etc.
*/
void
_mesa_remove_attachment(struct gl_context *ctx,
struct gl_renderbuffer_attachment *att)
{
if (att->Type == GL_TEXTURE) {
ASSERT(att->Texture);
if (ctx->Driver.FinishRenderTexture) {
/* tell driver that we're done rendering to this texture. */
ctx->Driver.FinishRenderTexture(ctx, att);
}
_mesa_reference_texobj(&att->Texture, NULL); /* unbind */
ASSERT(!att->Texture);
}
if (att->Type == GL_TEXTURE || att->Type == GL_RENDERBUFFER_EXT) {
ASSERT(!att->Texture);
_mesa_reference_renderbuffer(&att->Renderbuffer, NULL); /* unbind */
ASSERT(!att->Renderbuffer);
}
att->Type = GL_NONE;
att->Complete = GL_TRUE;
}
/**
* Bind a texture object to an attachment point.
* The previous binding, if any, will be removed first.
*/
void
_mesa_set_texture_attachment(struct gl_context *ctx,
struct gl_framebuffer *fb,
struct gl_renderbuffer_attachment *att,
struct gl_texture_object *texObj,
GLenum texTarget, GLuint level, GLuint zoffset)
{
if (att->Texture == texObj) {
/* re-attaching same texture */
ASSERT(att->Type == GL_TEXTURE);
if (ctx->Driver.FinishRenderTexture)
ctx->Driver.FinishRenderTexture(ctx, att);
}
else {
/* new attachment */
if (ctx->Driver.FinishRenderTexture && att->Texture)
ctx->Driver.FinishRenderTexture(ctx, att);
_mesa_remove_attachment(ctx, att);
att->Type = GL_TEXTURE;
assert(!att->Texture);
_mesa_reference_texobj(&att->Texture, texObj);
}
/* always update these fields */
att->TextureLevel = level;
att->CubeMapFace = _mesa_tex_target_to_face(texTarget);
att->Zoffset = zoffset;
att->Complete = GL_FALSE;
if (_mesa_get_attachment_teximage(att)) {
ctx->Driver.RenderTexture(ctx, fb, att);
}
invalidate_framebuffer(fb);
}
/**
* Bind a renderbuffer to an attachment point.
* The previous binding, if any, will be removed first.
*/
void
_mesa_set_renderbuffer_attachment(struct gl_context *ctx,
struct gl_renderbuffer_attachment *att,
struct gl_renderbuffer *rb)
{
/* XXX check if re-doing same attachment, exit early */
_mesa_remove_attachment(ctx, att);
att->Type = GL_RENDERBUFFER_EXT;
att->Texture = NULL; /* just to be safe */
att->Complete = GL_FALSE;
_mesa_reference_renderbuffer(&att->Renderbuffer, rb);
}
/**
* Fallback for ctx->Driver.FramebufferRenderbuffer()
* Attach a renderbuffer object to a framebuffer object.
*/
void
_mesa_framebuffer_renderbuffer(struct gl_context *ctx,
struct gl_framebuffer *fb,
GLenum attachment, struct gl_renderbuffer *rb)
{
struct gl_renderbuffer_attachment *att;
_glthread_LOCK_MUTEX(fb->Mutex);
att = _mesa_get_attachment(ctx, fb, attachment);
ASSERT(att);
if (rb) {
_mesa_set_renderbuffer_attachment(ctx, att, rb);
if (attachment == GL_DEPTH_STENCIL_ATTACHMENT) {
/* do stencil attachment here (depth already done above) */
att = _mesa_get_attachment(ctx, fb, GL_STENCIL_ATTACHMENT_EXT);
assert(att);
_mesa_set_renderbuffer_attachment(ctx, att, rb);
}
rb->AttachedAnytime = GL_TRUE;
}
else {
_mesa_remove_attachment(ctx, att);
}
invalidate_framebuffer(fb);
_glthread_UNLOCK_MUTEX(fb->Mutex);
}
/**
* Fallback for ctx->Driver.ValidateFramebuffer()
* Check if the renderbuffer's formats are supported by the software
* renderer.
* Drivers should probably override this.
*/
void
_mesa_validate_framebuffer(struct gl_context *ctx, struct gl_framebuffer *fb)
{
gl_buffer_index buf;
for (buf = 0; buf < BUFFER_COUNT; buf++) {
const struct gl_renderbuffer *rb = fb->Attachment[buf].Renderbuffer;
if (rb) {
switch (rb->_BaseFormat) {
case GL_ALPHA:
case GL_LUMINANCE_ALPHA:
case GL_LUMINANCE:
case GL_INTENSITY:
case GL_RED:
case GL_RG:
fb->_Status = GL_FRAMEBUFFER_UNSUPPORTED;
return;
default:
switch (rb->Format) {
/* XXX This list is likely incomplete. */
case MESA_FORMAT_RGB9_E5_FLOAT:
fb->_Status = GL_FRAMEBUFFER_UNSUPPORTED;
return;
default:;
/* render buffer format is supported by software rendering */
}
}
}
}
}
/**
* For debug only.
*/
static void
att_incomplete(const char *msg)
{
if (MESA_DEBUG_FLAGS & DEBUG_INCOMPLETE_FBO) {
_mesa_debug(NULL, "attachment incomplete: %s\n", msg);
}
}
/**
* For debug only.
*/
static void
fbo_incomplete(const char *msg, int index)
{
if (MESA_DEBUG_FLAGS & DEBUG_INCOMPLETE_FBO) {
_mesa_debug(NULL, "FBO Incomplete: %s [%d]\n", msg, index);
}
}
/**
* Is the given base format a legal format for a color renderbuffer?
*/
GLboolean
_mesa_is_legal_color_format(const struct gl_context *ctx, GLenum baseFormat)
{
switch (baseFormat) {
case GL_RGB:
case GL_RGBA:
return GL_TRUE;
case GL_LUMINANCE:
case GL_LUMINANCE_ALPHA:
case GL_INTENSITY:
case GL_ALPHA:
return ctx->Extensions.ARB_framebuffer_object;
case GL_RED:
case GL_RG:
return ctx->Extensions.ARB_texture_rg;
default:
return GL_FALSE;
}
}
/**
* Is the given base format a legal format for a depth/stencil renderbuffer?
*/
static GLboolean
is_legal_depth_format(const struct gl_context *ctx, GLenum baseFormat)
{
switch (baseFormat) {
case GL_DEPTH_COMPONENT:
case GL_DEPTH_STENCIL_EXT:
return GL_TRUE;
default:
return GL_FALSE;
}
}
/**
* Test if an attachment point is complete and update its Complete field.
* \param format if GL_COLOR, this is a color attachment point,
* if GL_DEPTH, this is a depth component attachment point,
* if GL_STENCIL, this is a stencil component attachment point.
*/
static void
test_attachment_completeness(const struct gl_context *ctx, GLenum format,
struct gl_renderbuffer_attachment *att)
{
assert(format == GL_COLOR || format == GL_DEPTH || format == GL_STENCIL);
/* assume complete */
att->Complete = GL_TRUE;
/* Look for reasons why the attachment might be incomplete */
if (att->Type == GL_TEXTURE) {
const struct gl_texture_object *texObj = att->Texture;
struct gl_texture_image *texImage;
GLenum baseFormat;
if (!texObj) {
att_incomplete("no texobj");
att->Complete = GL_FALSE;
return;
}
texImage = texObj->Image[att->CubeMapFace][att->TextureLevel];
if (!texImage) {
att_incomplete("no teximage");
att->Complete = GL_FALSE;
return;
}
if (texImage->Width < 1 || texImage->Height < 1) {
att_incomplete("teximage width/height=0");
printf("texobj = %u\n", texObj->Name);
printf("level = %d\n", att->TextureLevel);
att->Complete = GL_FALSE;
return;
}
if (texObj->Target == GL_TEXTURE_3D && att->Zoffset >= texImage->Depth) {
att_incomplete("bad z offset");
att->Complete = GL_FALSE;
return;
}
baseFormat = _mesa_get_format_base_format(texImage->TexFormat);
if (format == GL_COLOR) {
if (!_mesa_is_legal_color_format(ctx, baseFormat)) {
att_incomplete("bad format");
att->Complete = GL_FALSE;
return;
}
if (_mesa_is_format_compressed(texImage->TexFormat)) {
att_incomplete("compressed internalformat");
att->Complete = GL_FALSE;
return;
}
}
else if (format == GL_DEPTH) {
if (baseFormat == GL_DEPTH_COMPONENT) {
/* OK */
}
else if (ctx->Extensions.EXT_packed_depth_stencil &&
ctx->Extensions.ARB_depth_texture &&
baseFormat == GL_DEPTH_STENCIL_EXT) {
/* OK */
}
else {
att->Complete = GL_FALSE;
att_incomplete("bad depth format");
return;
}
}
else {
ASSERT(format == GL_STENCIL);
if (ctx->Extensions.EXT_packed_depth_stencil &&
ctx->Extensions.ARB_depth_texture &&
baseFormat == GL_DEPTH_STENCIL_EXT) {
/* OK */
}
else {
/* no such thing as stencil-only textures */
att_incomplete("illegal stencil texture");
att->Complete = GL_FALSE;
return;
}
}
}
else if (att->Type == GL_RENDERBUFFER_EXT) {
const GLenum baseFormat =
_mesa_get_format_base_format(att->Renderbuffer->Format);
ASSERT(att->Renderbuffer);
if (!att->Renderbuffer->InternalFormat ||
att->Renderbuffer->Width < 1 ||
att->Renderbuffer->Height < 1) {
att_incomplete("0x0 renderbuffer");
att->Complete = GL_FALSE;
return;
}
if (format == GL_COLOR) {
if (!_mesa_is_legal_color_format(ctx, baseFormat)) {
att_incomplete("bad renderbuffer color format");
att->Complete = GL_FALSE;
return;
}
}
else if (format == GL_DEPTH) {
if (baseFormat == GL_DEPTH_COMPONENT) {
/* OK */
}
else if (ctx->Extensions.EXT_packed_depth_stencil &&
baseFormat == GL_DEPTH_STENCIL_EXT) {
/* OK */
}
else {
att_incomplete("bad renderbuffer depth format");
att->Complete = GL_FALSE;
return;
}
}
else {
assert(format == GL_STENCIL);
if (baseFormat == GL_STENCIL_INDEX) {
/* OK */
}
else if (ctx->Extensions.EXT_packed_depth_stencil &&
baseFormat == GL_DEPTH_STENCIL_EXT) {
/* OK */
}
else {
att->Complete = GL_FALSE;
att_incomplete("bad renderbuffer stencil format");
return;
}
}
}
else {
ASSERT(att->Type == GL_NONE);
/* complete */
return;
}
}
/**
* Test if the given framebuffer object is complete and update its
* Status field with the results.
* Calls the ctx->Driver.ValidateFramebuffer() function to allow the
* driver to make hardware-specific validation/completeness checks.
* Also update the framebuffer's Width and Height fields if the
* framebuffer is complete.
*/
void
_mesa_test_framebuffer_completeness(struct gl_context *ctx,
struct gl_framebuffer *fb)
{
GLuint numImages;
GLenum intFormat = GL_NONE; /* color buffers' internal format */
GLuint minWidth = ~0, minHeight = ~0, maxWidth = 0, maxHeight = 0;
GLint numSamples = -1;
GLint i;
GLuint j;
assert(_mesa_is_user_fbo(fb));
/* we're changing framebuffer fields here */
FLUSH_VERTICES(ctx, _NEW_BUFFERS);
numImages = 0;
fb->Width = 0;
fb->Height = 0;
/* Start at -2 to more easily loop over all attachment points.
* -2: depth buffer
* -1: stencil buffer
* >=0: color buffer
*/
for (i = -2; i < (GLint) ctx->Const.MaxColorAttachments; i++) {
struct gl_renderbuffer_attachment *att;
GLenum f;
gl_format attFormat;
/*
* XXX for ARB_fbo, only check color buffers that are named by
* GL_READ_BUFFER and GL_DRAW_BUFFERi.
*/
/* check for attachment completeness
*/
if (i == -2) {
att = &fb->Attachment[BUFFER_DEPTH];
test_attachment_completeness(ctx, GL_DEPTH, att);
if (!att->Complete) {
fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT;
fbo_incomplete("depth attachment incomplete", -1);
return;
}
}
else if (i == -1) {
att = &fb->Attachment[BUFFER_STENCIL];
test_attachment_completeness(ctx, GL_STENCIL, att);
if (!att->Complete) {
fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT;
fbo_incomplete("stencil attachment incomplete", -1);
return;
}
}
else {
att = &fb->Attachment[BUFFER_COLOR0 + i];
test_attachment_completeness(ctx, GL_COLOR, att);
if (!att->Complete) {
fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT;
fbo_incomplete("color attachment incomplete", i);
return;
}
}
/* get width, height, format of the renderbuffer/texture
*/
if (att->Type == GL_TEXTURE) {
const struct gl_texture_image *texImg =
_mesa_get_attachment_teximage(att);
minWidth = MIN2(minWidth, texImg->Width);
maxWidth = MAX2(maxWidth, texImg->Width);
minHeight = MIN2(minHeight, texImg->Height);
maxHeight = MAX2(maxHeight, texImg->Height);
f = texImg->_BaseFormat;
attFormat = texImg->TexFormat;
numImages++;
if (!_mesa_is_legal_color_format(ctx, f) &&
!is_legal_depth_format(ctx, f)) {
fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_FORMATS_EXT;
fbo_incomplete("texture attachment incomplete", -1);
return;
}
}
else if (att->Type == GL_RENDERBUFFER_EXT) {
minWidth = MIN2(minWidth, att->Renderbuffer->Width);
maxWidth = MAX2(minWidth, att->Renderbuffer->Width);
minHeight = MIN2(minHeight, att->Renderbuffer->Height);
maxHeight = MAX2(minHeight, att->Renderbuffer->Height);
f = att->Renderbuffer->InternalFormat;
attFormat = att->Renderbuffer->Format;
numImages++;
}
else {
assert(att->Type == GL_NONE);
continue;
}
if (att->Renderbuffer && numSamples < 0) {
/* first buffer */
numSamples = att->Renderbuffer->NumSamples;
}
/* check if integer color */
fb->_IntegerColor = _mesa_is_format_integer_color(attFormat);
/* Error-check width, height, format, samples
*/
if (numImages == 1) {
/* save format, num samples */
if (i >= 0) {
intFormat = f;
}
}
else {
if (!ctx->Extensions.ARB_framebuffer_object) {
/* check that width, height, format are same */
if (minWidth != maxWidth || minHeight != maxHeight) {
fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS_EXT;
fbo_incomplete("width or height mismatch", -1);
return;
}
/* check that all color buffers are the same format */
if (intFormat != GL_NONE && f != intFormat) {
fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_FORMATS_EXT;
fbo_incomplete("format mismatch", -1);
return;
}
}
if (att->Renderbuffer &&
att->Renderbuffer->NumSamples != numSamples) {
fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE;
fbo_incomplete("inconsistant number of samples", i);
return;
}
}
/* Check that the format is valid. (MESA_FORMAT_NONE means unsupported)
*/
if (att->Type == GL_RENDERBUFFER &&
att->Renderbuffer->Format == MESA_FORMAT_NONE) {
fb->_Status = GL_FRAMEBUFFER_UNSUPPORTED;
fbo_incomplete("unsupported renderbuffer format", i);
return;
}
}
#if FEATURE_GL
if (_mesa_is_desktop_gl(ctx) && !ctx->Extensions.ARB_ES2_compatibility) {
/* Check that all DrawBuffers are present */
for (j = 0; j < ctx->Const.MaxDrawBuffers; j++) {
if (fb->ColorDrawBuffer[j] != GL_NONE) {
const struct gl_renderbuffer_attachment *att
= _mesa_get_attachment(ctx, fb, fb->ColorDrawBuffer[j]);
assert(att);
if (att->Type == GL_NONE) {
fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER_EXT;
fbo_incomplete("missing drawbuffer", j);
return;
}
}
}
/* Check that the ReadBuffer is present */
if (fb->ColorReadBuffer != GL_NONE) {
const struct gl_renderbuffer_attachment *att
= _mesa_get_attachment(ctx, fb, fb->ColorReadBuffer);
assert(att);
if (att->Type == GL_NONE) {
fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_READ_BUFFER_EXT;
fbo_incomplete("missing readbuffer", -1);
return;
}
}
}
#else
(void) j;
#endif
if (numImages == 0) {
fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT_EXT;
fbo_incomplete("no attachments", -1);
return;
}
/* Provisionally set status = COMPLETE ... */
fb->_Status = GL_FRAMEBUFFER_COMPLETE_EXT;
/* ... but the driver may say the FB is incomplete.
* Drivers will most likely set the status to GL_FRAMEBUFFER_UNSUPPORTED
* if anything.
*/
if (ctx->Driver.ValidateFramebuffer) {
ctx->Driver.ValidateFramebuffer(ctx, fb);
if (fb->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) {
fbo_incomplete("driver marked FBO as incomplete", -1);
}
}
if (fb->_Status == GL_FRAMEBUFFER_COMPLETE_EXT) {
/*
* Note that if ARB_framebuffer_object is supported and the attached
* renderbuffers/textures are different sizes, the framebuffer
* width/height will be set to the smallest width/height.
*/
fb->Width = minWidth;
fb->Height = minHeight;
/* finally, update the visual info for the framebuffer */
_mesa_update_framebuffer_visual(ctx, fb);
}
}
GLboolean GLAPIENTRY
_mesa_IsRenderbufferEXT(GLuint renderbuffer)
{
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE);
if (renderbuffer) {
struct gl_renderbuffer *rb = _mesa_lookup_renderbuffer(ctx, renderbuffer);
if (rb != NULL && rb != &DummyRenderbuffer)
return GL_TRUE;
}
return GL_FALSE;
}
void GLAPIENTRY
_mesa_BindRenderbufferEXT(GLenum target, GLuint renderbuffer)
{
struct gl_renderbuffer *newRb;
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END(ctx);
if (target != GL_RENDERBUFFER_EXT) {
_mesa_error(ctx, GL_INVALID_ENUM, "glBindRenderbufferEXT(target)");
return;
}
/* No need to flush here since the render buffer binding has no
* effect on rendering state.
*/
if (renderbuffer) {
newRb = _mesa_lookup_renderbuffer(ctx, renderbuffer);
if (newRb == &DummyRenderbuffer) {
/* ID was reserved, but no real renderbuffer object made yet */
newRb = NULL;
}
else if (!newRb && ctx->Extensions.ARB_framebuffer_object) {
/* All RB IDs must be Gen'd */
_mesa_error(ctx, GL_INVALID_OPERATION, "glBindRenderbuffer(buffer)");
return;
}
if (!newRb) {
/* create new renderbuffer object */
newRb = ctx->Driver.NewRenderbuffer(ctx, renderbuffer);
if (!newRb) {
_mesa_error(ctx, GL_OUT_OF_MEMORY, "glBindRenderbufferEXT");
return;
}
ASSERT(newRb->AllocStorage);
_mesa_HashInsert(ctx->Shared->RenderBuffers, renderbuffer, newRb);
newRb->RefCount = 1; /* referenced by hash table */
}
}
else {
newRb = NULL;
}
ASSERT(newRb != &DummyRenderbuffer);
_mesa_reference_renderbuffer(&ctx->CurrentRenderbuffer, newRb);
}
/**
* If the given renderbuffer is anywhere attached to the framebuffer, detach
* the renderbuffer.
* This is used when a renderbuffer object is deleted.
* The spec calls for unbinding.
*/
static void
detach_renderbuffer(struct gl_context *ctx,
struct gl_framebuffer *fb,
struct gl_renderbuffer *rb)
{
GLuint i;
for (i = 0; i < BUFFER_COUNT; i++) {
if (fb->Attachment[i].Renderbuffer == rb) {
_mesa_remove_attachment(ctx, &fb->Attachment[i]);
}
}
invalidate_framebuffer(fb);
}
void GLAPIENTRY
_mesa_DeleteRenderbuffersEXT(GLsizei n, const GLuint *renderbuffers)
{
GLint i;
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END(ctx);
FLUSH_VERTICES(ctx, _NEW_BUFFERS);
for (i = 0; i < n; i++) {
if (renderbuffers[i] > 0) {
struct gl_renderbuffer *rb;
rb = _mesa_lookup_renderbuffer(ctx, renderbuffers[i]);
if (rb) {
/* check if deleting currently bound renderbuffer object */
if (rb == ctx->CurrentRenderbuffer) {
/* bind default */
ASSERT(rb->RefCount >= 2);
_mesa_BindRenderbufferEXT(GL_RENDERBUFFER_EXT, 0);
}
if (_mesa_is_user_fbo(ctx->DrawBuffer)) {
detach_renderbuffer(ctx, ctx->DrawBuffer, rb);
}
if (_mesa_is_user_fbo(ctx->ReadBuffer)
&& ctx->ReadBuffer != ctx->DrawBuffer) {
detach_renderbuffer(ctx, ctx->ReadBuffer, rb);
}
/* Remove from hash table immediately, to free the ID.
* But the object will not be freed until it's no longer
* referenced anywhere else.
*/
_mesa_HashRemove(ctx->Shared->RenderBuffers, renderbuffers[i]);
if (rb != &DummyRenderbuffer) {
/* no longer referenced by hash table */
_mesa_reference_renderbuffer(&rb, NULL);
}
}
}
}
}
void GLAPIENTRY
_mesa_GenRenderbuffersEXT(GLsizei n, GLuint *renderbuffers)
{
GET_CURRENT_CONTEXT(ctx);
GLuint first;
GLint i;
ASSERT_OUTSIDE_BEGIN_END(ctx);
if (n < 0) {
_mesa_error(ctx, GL_INVALID_VALUE, "glGenRenderbuffersEXT(n)");
return;
}
if (!renderbuffers)
return;
first = _mesa_HashFindFreeKeyBlock(ctx->Shared->RenderBuffers, n);
for (i = 0; i < n; i++) {
GLuint name = first + i;
renderbuffers[i] = name;
/* insert dummy placeholder into hash table */
_glthread_LOCK_MUTEX(ctx->Shared->Mutex);
_mesa_HashInsert(ctx->Shared->RenderBuffers, name, &DummyRenderbuffer);
_glthread_UNLOCK_MUTEX(ctx->Shared->Mutex);
}
}
/**
* Given an internal format token for a render buffer, return the
* corresponding base format (one of GL_RGB, GL_RGBA, GL_STENCIL_INDEX,
* GL_DEPTH_COMPONENT, GL_DEPTH_STENCIL_EXT, GL_ALPHA, GL_LUMINANCE,
* GL_LUMINANCE_ALPHA, GL_INTENSITY, etc).
*
* This is similar to _mesa_base_tex_format() but the set of valid
* internal formats is different.
*
* Note that even if a format is determined to be legal here, validation
* of the FBO may fail if the format is not supported by the driver/GPU.
*
* \param internalFormat as passed to glRenderbufferStorage()
* \return the base internal format, or 0 if internalFormat is illegal
*/
GLenum
_mesa_base_fbo_format(struct gl_context *ctx, GLenum internalFormat)
{
/*
* Notes: some formats such as alpha, luminance, etc. were added
* with GL_ARB_framebuffer_object.
*/
switch (internalFormat) {
case GL_ALPHA:
case GL_ALPHA4:
case GL_ALPHA8:
case GL_ALPHA12:
case GL_ALPHA16:
return ctx->API == API_OPENGL && ctx->Extensions.ARB_framebuffer_object
? GL_ALPHA : 0;
case GL_LUMINANCE:
case GL_LUMINANCE4:
case GL_LUMINANCE8:
case GL_LUMINANCE12:
case GL_LUMINANCE16:
return ctx->API == API_OPENGL && ctx->Extensions.ARB_framebuffer_object
? GL_LUMINANCE : 0;
case GL_LUMINANCE_ALPHA:
case GL_LUMINANCE4_ALPHA4:
case GL_LUMINANCE6_ALPHA2:
case GL_LUMINANCE8_ALPHA8:
case GL_LUMINANCE12_ALPHA4:
case GL_LUMINANCE12_ALPHA12:
case GL_LUMINANCE16_ALPHA16:
return ctx->API == API_OPENGL && ctx->Extensions.ARB_framebuffer_object
? GL_LUMINANCE_ALPHA : 0;
case GL_INTENSITY:
case GL_INTENSITY4:
case GL_INTENSITY8:
case GL_INTENSITY12:
case GL_INTENSITY16:
return ctx->API == API_OPENGL && ctx->Extensions.ARB_framebuffer_object
? GL_INTENSITY : 0;
case GL_RGB8:
return GL_RGB;
case GL_RGB:
case GL_R3_G3_B2:
case GL_RGB4:
case GL_RGB5:
case GL_RGB10:
case GL_RGB12:
case GL_RGB16:
return _mesa_is_desktop_gl(ctx) ? GL_RGB : 0;
case GL_SRGB8_EXT:
return _mesa_is_desktop_gl(ctx) || _mesa_is_gles3(ctx) ? GL_RGB : 0;
case GL_RGBA4:
case GL_RGB5_A1:
case GL_RGBA8:
return GL_RGBA;
case GL_RGBA:
case GL_RGBA2:
case GL_RGBA12:
case GL_RGBA16:
return _mesa_is_desktop_gl(ctx) ? GL_RGBA : 0;
case GL_RGB10_A2:
case GL_SRGB8_ALPHA8_EXT:
return _mesa_is_desktop_gl(ctx) || _mesa_is_gles3(ctx) ? GL_RGBA : 0;
case GL_STENCIL_INDEX:
case GL_STENCIL_INDEX1_EXT:
case GL_STENCIL_INDEX4_EXT:
case GL_STENCIL_INDEX16_EXT:
/* There are extensions for GL_STENCIL_INDEX1 and GL_STENCIL_INDEX4 in
* OpenGL ES, but Mesa does not currently support them.
*/
return _mesa_is_desktop_gl(ctx) ? GL_STENCIL_INDEX : 0;
case GL_STENCIL_INDEX8_EXT:
return GL_STENCIL_INDEX;
case GL_DEPTH_COMPONENT:
case GL_DEPTH_COMPONENT32:
return _mesa_is_desktop_gl(ctx) ? GL_DEPTH_COMPONENT : 0;
case GL_DEPTH_COMPONENT16:
case GL_DEPTH_COMPONENT24:
return GL_DEPTH_COMPONENT;
case GL_DEPTH_STENCIL_EXT:
return _mesa_is_desktop_gl(ctx)
&& ctx->Extensions.EXT_packed_depth_stencil
? GL_DEPTH_STENCIL_EXT : 0;
case GL_DEPTH24_STENCIL8_EXT:
return ctx->Extensions.EXT_packed_depth_stencil
? GL_DEPTH_STENCIL_EXT : 0;
case GL_DEPTH_COMPONENT32F:
return ctx->Version >= 30
|| (ctx->API == API_OPENGL && ctx->Extensions.ARB_depth_buffer_float)
? GL_DEPTH_COMPONENT : 0;
case GL_DEPTH32F_STENCIL8:
return ctx->Version >= 30
|| (ctx->API == API_OPENGL && ctx->Extensions.ARB_depth_buffer_float)
? GL_DEPTH_STENCIL : 0;
case GL_RED:
case GL_R16:
return _mesa_is_desktop_gl(ctx) && ctx->Extensions.ARB_texture_rg
? GL_RED : 0;
case GL_R8:
return ctx->API != API_OPENGLES && ctx->Extensions.ARB_texture_rg
? GL_RED : 0;
case GL_RG:
case GL_RG16:
return _mesa_is_desktop_gl(ctx) && ctx->Extensions.ARB_texture_rg
? GL_RG : 0;
case GL_RG8:
return ctx->API != API_OPENGLES && ctx->Extensions.ARB_texture_rg
? GL_RG : 0;
/* signed normalized texture formats */
case GL_R8_SNORM:
return ctx->Version >= 30
|| (ctx->API == API_OPENGL && ctx->Extensions.EXT_texture_snorm)
? GL_RED : 0;
case GL_RED_SNORM:
case GL_R16_SNORM:
return _mesa_is_desktop_gl(ctx) && ctx->Extensions.EXT_texture_snorm
? GL_RED : 0;
case GL_RG8_SNORM:
return ctx->Version >= 30
|| (ctx->API == API_OPENGL && ctx->Extensions.EXT_texture_snorm)
? GL_RG : 0;
case GL_RG_SNORM:
case GL_RG16_SNORM:
return _mesa_is_desktop_gl(ctx) && ctx->Extensions.EXT_texture_snorm
? GL_RG : 0;
case GL_RGB8_SNORM:
return ctx->Version >= 30
|| (ctx->API == API_OPENGL && ctx->Extensions.EXT_texture_snorm)
? GL_RGB : 0;
case GL_RGB_SNORM:
case GL_RGB16_SNORM:
return _mesa_is_desktop_gl(ctx) && ctx->Extensions.EXT_texture_snorm
? GL_RGB : 0;
case GL_RGBA8_SNORM:
return ctx->Version >= 30
|| (ctx->API == API_OPENGL && ctx->Extensions.EXT_texture_snorm)
? GL_RGBA : 0;
case GL_RGBA_SNORM:
case GL_RGBA16_SNORM:
return _mesa_is_desktop_gl(ctx) && ctx->Extensions.EXT_texture_snorm
? GL_RGBA : 0;
case GL_ALPHA_SNORM:
case GL_ALPHA8_SNORM:
case GL_ALPHA16_SNORM:
return ctx->API == API_OPENGL &&
ctx->Extensions.EXT_texture_snorm &&
ctx->Extensions.ARB_framebuffer_object ? GL_ALPHA : 0;
case GL_LUMINANCE_SNORM:
case GL_LUMINANCE8_SNORM:
case GL_LUMINANCE16_SNORM:
return ctx->API == API_OPENGL &&
ctx->Extensions.EXT_texture_snorm &&
ctx->Extensions.ARB_framebuffer_object ? GL_LUMINANCE : 0;
case GL_LUMINANCE_ALPHA_SNORM:
case GL_LUMINANCE8_ALPHA8_SNORM:
case GL_LUMINANCE16_ALPHA16_SNORM:
return ctx->API == API_OPENGL &&
ctx->Extensions.EXT_texture_snorm &&
ctx->Extensions.ARB_framebuffer_object ? GL_LUMINANCE_ALPHA : 0;
case GL_INTENSITY_SNORM:
case GL_INTENSITY8_SNORM:
case GL_INTENSITY16_SNORM:
return ctx->API == API_OPENGL &&
ctx->Extensions.EXT_texture_snorm &&
ctx->Extensions.ARB_framebuffer_object ? GL_INTENSITY : 0;
case GL_R16F:
case GL_R32F:
return ctx->Version >= 30
|| (ctx->API == API_OPENGL &&
ctx->Extensions.ARB_texture_rg &&
ctx->Extensions.ARB_texture_float) ? GL_RED : 0;
case GL_RG16F:
case GL_RG32F:
return ctx->Version >= 30
|| (ctx->API == API_OPENGL &&
ctx->Extensions.ARB_texture_rg &&
ctx->Extensions.ARB_texture_float) ? GL_RG : 0;
case GL_RGB16F:
case GL_RGB32F:
return (_mesa_is_desktop_gl(ctx) && ctx->Extensions.ARB_texture_float)
|| _mesa_is_gles3(ctx)
? GL_RGB : 0;
case GL_RGBA16F:
case GL_RGBA32F:
return (_mesa_is_desktop_gl(ctx) && ctx->Extensions.ARB_texture_float)
|| _mesa_is_gles3(ctx)
? GL_RGBA : 0;
case GL_ALPHA16F_ARB:
case GL_ALPHA32F_ARB:
return ctx->API == API_OPENGL &&
ctx->Extensions.ARB_texture_float &&
ctx->Extensions.ARB_framebuffer_object ? GL_ALPHA : 0;
case GL_LUMINANCE16F_ARB:
case GL_LUMINANCE32F_ARB:
return ctx->API == API_OPENGL &&
ctx->Extensions.ARB_texture_float &&
ctx->Extensions.ARB_framebuffer_object ? GL_LUMINANCE : 0;
case GL_LUMINANCE_ALPHA16F_ARB:
case GL_LUMINANCE_ALPHA32F_ARB:
return ctx->API == API_OPENGL &&
ctx->Extensions.ARB_texture_float &&
ctx->Extensions.ARB_framebuffer_object ? GL_LUMINANCE_ALPHA : 0;
case GL_INTENSITY16F_ARB:
case GL_INTENSITY32F_ARB:
return ctx->API == API_OPENGL &&
ctx->Extensions.ARB_texture_float &&
ctx->Extensions.ARB_framebuffer_object ? GL_INTENSITY : 0;
case GL_RGB9_E5:
return (_mesa_is_desktop_gl(ctx)
&& ctx->Extensions.EXT_texture_shared_exponent)
|| _mesa_is_gles3(ctx) ? GL_RGB : 0;
case GL_R11F_G11F_B10F:
return (_mesa_is_desktop_gl(ctx) && ctx->Extensions.EXT_packed_float)
|| _mesa_is_gles3(ctx) ? GL_RGB : 0;
case GL_RGBA8UI_EXT:
case GL_RGBA16UI_EXT:
case GL_RGBA32UI_EXT:
case GL_RGBA8I_EXT:
case GL_RGBA16I_EXT:
case GL_RGBA32I_EXT:
return ctx->Version >= 30
|| (_mesa_is_desktop_gl(ctx) &&
ctx->Extensions.EXT_texture_integer) ? GL_RGBA : 0;
case GL_RGB8UI_EXT:
case GL_RGB16UI_EXT:
case GL_RGB32UI_EXT:
case GL_RGB8I_EXT:
case GL_RGB16I_EXT:
case GL_RGB32I_EXT:
return ctx->Version >= 30
|| (_mesa_is_desktop_gl(ctx) &&
ctx->Extensions.EXT_texture_integer) ? GL_RGB : 0;
case GL_R8UI:
case GL_R8I:
case GL_R16UI:
case GL_R16I:
case GL_R32UI:
case GL_R32I:
return ctx->Version >= 30
|| (_mesa_is_desktop_gl(ctx) &&
ctx->Extensions.ARB_texture_rg &&
ctx->Extensions.EXT_texture_integer) ? GL_RED : 0;
case GL_RG8UI:
case GL_RG8I:
case GL_RG16UI:
case GL_RG16I:
case GL_RG32UI:
case GL_RG32I:
return ctx->Version >= 30
|| (_mesa_is_desktop_gl(ctx) &&
ctx->Extensions.ARB_texture_rg &&
ctx->Extensions.EXT_texture_integer) ? GL_RG : 0;
case GL_INTENSITY8I_EXT:
case GL_INTENSITY8UI_EXT:
case GL_INTENSITY16I_EXT:
case GL_INTENSITY16UI_EXT:
case GL_INTENSITY32I_EXT:
case GL_INTENSITY32UI_EXT:
return ctx->API == API_OPENGL &&
ctx->Extensions.EXT_texture_integer &&
ctx->Extensions.ARB_framebuffer_object ? GL_INTENSITY : 0;
case GL_LUMINANCE8I_EXT:
case GL_LUMINANCE8UI_EXT:
case GL_LUMINANCE16I_EXT:
case GL_LUMINANCE16UI_EXT:
case GL_LUMINANCE32I_EXT:
case GL_LUMINANCE32UI_EXT:
return ctx->API == API_OPENGL &&
ctx->Extensions.EXT_texture_integer &&
ctx->Extensions.ARB_framebuffer_object ? GL_LUMINANCE : 0;
case GL_LUMINANCE_ALPHA8I_EXT:
case GL_LUMINANCE_ALPHA8UI_EXT:
case GL_LUMINANCE_ALPHA16I_EXT:
case GL_LUMINANCE_ALPHA16UI_EXT:
case GL_LUMINANCE_ALPHA32I_EXT:
case GL_LUMINANCE_ALPHA32UI_EXT:
return ctx->API == API_OPENGL &&
ctx->Extensions.EXT_texture_integer &&
ctx->Extensions.ARB_framebuffer_object ? GL_LUMINANCE_ALPHA : 0;
case GL_ALPHA8I_EXT:
case GL_ALPHA8UI_EXT:
case GL_ALPHA16I_EXT:
case GL_ALPHA16UI_EXT:
case GL_ALPHA32I_EXT:
case GL_ALPHA32UI_EXT:
return ctx->API == API_OPENGL &&
ctx->Extensions.EXT_texture_integer &&
ctx->Extensions.ARB_framebuffer_object ? GL_ALPHA : 0;
case GL_RGB10_A2UI:
return (_mesa_is_desktop_gl(ctx) &&
ctx->Extensions.ARB_texture_rgb10_a2ui)
|| _mesa_is_gles3(ctx) ? GL_RGBA : 0;
case GL_RGB565:
return _mesa_is_gles(ctx) || ctx->Extensions.ARB_ES2_compatibility
? GL_RGB : 0;
default:
return 0;
}
}
/**
* Invalidate a renderbuffer attachment. Called from _mesa_HashWalk().
*/
static void
invalidate_rb(GLuint key, void *data, void *userData)
{
struct gl_framebuffer *fb = (struct gl_framebuffer *) data;
struct gl_renderbuffer *rb = (struct gl_renderbuffer *) userData;
/* If this is a user-created FBO */
if (_mesa_is_user_fbo(fb)) {
GLuint i;
for (i = 0; i < BUFFER_COUNT; i++) {
struct gl_renderbuffer_attachment *att = fb->Attachment + i;
if (att->Type == GL_RENDERBUFFER &&
att->Renderbuffer == rb) {
/* Mark fb status as indeterminate to force re-validation */
fb->_Status = 0;
return;
}
}
}
}
/** sentinal value, see below */
#define NO_SAMPLES 1000
/**
* Helper function used by _mesa_RenderbufferStorageEXT() and
* _mesa_RenderbufferStorageMultisample().
* samples will be NO_SAMPLES if called by _mesa_RenderbufferStorageEXT().
*/
static void
renderbuffer_storage(GLenum target, GLenum internalFormat,
GLsizei width, GLsizei height, GLsizei samples)
{
const char *func = samples == NO_SAMPLES ?
"glRenderbufferStorage" : "RenderbufferStorageMultisample";
struct gl_renderbuffer *rb;
GLenum baseFormat;
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END(ctx);
if (target != GL_RENDERBUFFER_EXT) {
_mesa_error(ctx, GL_INVALID_ENUM, "%s(target)", func);
return;
}
baseFormat = _mesa_base_fbo_format(ctx, internalFormat);
if (baseFormat == 0) {
_mesa_error(ctx, GL_INVALID_ENUM, "%s(internalFormat)", func);
return;
}
if (width < 0 || width > (GLsizei) ctx->Const.MaxRenderbufferSize) {
_mesa_error(ctx, GL_INVALID_VALUE, "%s(width)", func);
return;
}
if (height < 0 || height > (GLsizei) ctx->Const.MaxRenderbufferSize) {
_mesa_error(ctx, GL_INVALID_VALUE, "%s(height)", func);
return;
}
if (samples == NO_SAMPLES) {
/* NumSamples == 0 indicates non-multisampling */
samples = 0;
}
else if (samples > (GLsizei) ctx->Const.MaxSamples) {
/* note: driver may choose to use more samples than what's requested */
_mesa_error(ctx, GL_INVALID_VALUE, "%s(samples)", func);
return;
}
rb = ctx->CurrentRenderbuffer;
if (!rb) {
_mesa_error(ctx, GL_INVALID_OPERATION, "%s", func);
return;
}
FLUSH_VERTICES(ctx, _NEW_BUFFERS);
if (rb->InternalFormat == internalFormat &&
rb->Width == (GLuint) width &&
rb->Height == (GLuint) height &&
rb->NumSamples == samples) {
/* no change in allocation needed */
return;
}
/* These MUST get set by the AllocStorage func */
rb->Format = MESA_FORMAT_NONE;
rb->NumSamples = samples;
/* Now allocate the storage */
ASSERT(rb->AllocStorage);
if (rb->AllocStorage(ctx, rb, internalFormat, width, height)) {
/* No error - check/set fields now */
/* If rb->Format == MESA_FORMAT_NONE, the format is unsupported. */
assert(rb->Width == (GLuint) width);
assert(rb->Height == (GLuint) height);
rb->InternalFormat = internalFormat;
rb->_BaseFormat = baseFormat;
assert(rb->_BaseFormat != 0);
}
else {
/* Probably ran out of memory - clear the fields */
rb->Width = 0;
rb->Height = 0;
rb->Format = MESA_FORMAT_NONE;
rb->InternalFormat = GL_NONE;
rb->_BaseFormat = GL_NONE;
rb->NumSamples = 0;
}
/* Invalidate the framebuffers the renderbuffer is attached in. */
if (rb->AttachedAnytime) {
_mesa_HashWalk(ctx->Shared->FrameBuffers, invalidate_rb, rb);
}
}
#if FEATURE_OES_EGL_image
void GLAPIENTRY
_mesa_EGLImageTargetRenderbufferStorageOES(GLenum target, GLeglImageOES image)
{
struct gl_renderbuffer *rb;
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END(ctx);
if (!ctx->Extensions.OES_EGL_image) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glEGLImageTargetRenderbufferStorageOES(unsupported)");
return;
}
if (target != GL_RENDERBUFFER) {
_mesa_error(ctx, GL_INVALID_ENUM,
"EGLImageTargetRenderbufferStorageOES");
return;
}
rb = ctx->CurrentRenderbuffer;
if (!rb) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"EGLImageTargetRenderbufferStorageOES");
return;
}
FLUSH_VERTICES(ctx, _NEW_BUFFERS);
ctx->Driver.EGLImageTargetRenderbufferStorage(ctx, rb, image);
}
#endif
/**
* Helper function for _mesa_GetRenderbufferParameterivEXT() and
* _mesa_GetFramebufferAttachmentParameterivEXT()
* We have to be careful to respect the base format. For example, if a
* renderbuffer/texture was created with internalFormat=GL_RGB but the
* driver actually chose a GL_RGBA format, when the user queries ALPHA_SIZE
* we need to return zero.
*/
static GLint
get_component_bits(GLenum pname, GLenum baseFormat, gl_format format)
{
if (_mesa_base_format_has_channel(baseFormat, pname))
return _mesa_get_format_bits(format, pname);
else
return 0;
}
void GLAPIENTRY
_mesa_RenderbufferStorageEXT(GLenum target, GLenum internalFormat,
GLsizei width, GLsizei height)
{
/* GL_ARB_fbo says calling this function is equivalent to calling
* glRenderbufferStorageMultisample() with samples=0. We pass in
* a token value here just for error reporting purposes.
*/
renderbuffer_storage(target, internalFormat, width, height, NO_SAMPLES);
}
void GLAPIENTRY
_mesa_RenderbufferStorageMultisample(GLenum target, GLsizei samples,
GLenum internalFormat,
GLsizei width, GLsizei height)
{
renderbuffer_storage(target, internalFormat, width, height, samples);
}
/**
* OpenGL ES version of glRenderBufferStorage.
*/
void GLAPIENTRY
_es_RenderbufferStorageEXT(GLenum target, GLenum internalFormat,
GLsizei width, GLsizei height)
{
switch (internalFormat) {
case GL_RGB565:
/* XXX this confuses GL_RENDERBUFFER_INTERNAL_FORMAT_OES */
/* choose a closest format */
internalFormat = GL_RGB5;
break;
default:
break;
}
renderbuffer_storage(target, internalFormat, width, height, 0);
}
void GLAPIENTRY
_mesa_GetRenderbufferParameterivEXT(GLenum target, GLenum pname, GLint *params)
{
struct gl_renderbuffer *rb;
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END(ctx);
if (target != GL_RENDERBUFFER_EXT) {
_mesa_error(ctx, GL_INVALID_ENUM,
"glGetRenderbufferParameterivEXT(target)");
return;
}
rb = ctx->CurrentRenderbuffer;
if (!rb) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glGetRenderbufferParameterivEXT");
return;
}
/* No need to flush here since we're just quering state which is
* not effected by rendering.
*/
switch (pname) {
case GL_RENDERBUFFER_WIDTH_EXT:
*params = rb->Width;
return;
case GL_RENDERBUFFER_HEIGHT_EXT:
*params = rb->Height;
return;
case GL_RENDERBUFFER_INTERNAL_FORMAT_EXT:
*params = rb->InternalFormat;
return;
case GL_RENDERBUFFER_RED_SIZE_EXT:
case GL_RENDERBUFFER_GREEN_SIZE_EXT:
case GL_RENDERBUFFER_BLUE_SIZE_EXT:
case GL_RENDERBUFFER_ALPHA_SIZE_EXT:
case GL_RENDERBUFFER_DEPTH_SIZE_EXT:
case GL_RENDERBUFFER_STENCIL_SIZE_EXT:
*params = get_component_bits(pname, rb->_BaseFormat, rb->Format);
break;
case GL_RENDERBUFFER_SAMPLES:
if ((_mesa_is_desktop_gl(ctx) && ctx->Extensions.ARB_framebuffer_object)
|| _mesa_is_gles3(ctx)) {
*params = rb->NumSamples;
break;
}
/* fallthrough */
default:
_mesa_error(ctx, GL_INVALID_ENUM,
"glGetRenderbufferParameterivEXT(target)");
return;
}
}
GLboolean GLAPIENTRY
_mesa_IsFramebufferEXT(GLuint framebuffer)
{
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE);
if (framebuffer) {
struct gl_framebuffer *rb = _mesa_lookup_framebuffer(ctx, framebuffer);
if (rb != NULL && rb != &DummyFramebuffer)
return GL_TRUE;
}
return GL_FALSE;
}
/**
* Check if any of the attachments of the given framebuffer are textures
* (render to texture). Call ctx->Driver.RenderTexture() for such
* attachments.
*/
static void
check_begin_texture_render(struct gl_context *ctx, struct gl_framebuffer *fb)
{
GLuint i;
ASSERT(ctx->Driver.RenderTexture);
if (_mesa_is_winsys_fbo(fb))
return; /* can't render to texture with winsys framebuffers */
for (i = 0; i < BUFFER_COUNT; i++) {
struct gl_renderbuffer_attachment *att = fb->Attachment + i;
if (att->Texture && _mesa_get_attachment_teximage(att)) {
ctx->Driver.RenderTexture(ctx, fb, att);
}
}
}
/**
* Examine all the framebuffer's attachments to see if any are textures.
* If so, call ctx->Driver.FinishRenderTexture() for each texture to
* notify the device driver that the texture image may have changed.
*/
static void
check_end_texture_render(struct gl_context *ctx, struct gl_framebuffer *fb)
{
if (_mesa_is_winsys_fbo(fb))
return; /* can't render to texture with winsys framebuffers */
if (ctx->Driver.FinishRenderTexture) {
GLuint i;
for (i = 0; i < BUFFER_COUNT; i++) {
struct gl_renderbuffer_attachment *att = fb->Attachment + i;
if (att->Texture && att->Renderbuffer) {
ctx->Driver.FinishRenderTexture(ctx, att);
}
}
}
}
void GLAPIENTRY
_mesa_BindFramebufferEXT(GLenum target, GLuint framebuffer)
{
struct gl_framebuffer *newDrawFb, *newReadFb;
struct gl_framebuffer *oldDrawFb, *oldReadFb;
GLboolean bindReadBuf, bindDrawBuf;
GET_CURRENT_CONTEXT(ctx);
#ifdef DEBUG
if (ctx->Extensions.ARB_framebuffer_object) {
ASSERT(ctx->Extensions.EXT_framebuffer_object);
ASSERT(ctx->Extensions.EXT_framebuffer_blit);
}
#endif
ASSERT_OUTSIDE_BEGIN_END(ctx);
if (!ctx->Extensions.EXT_framebuffer_object) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glBindFramebufferEXT(unsupported)");
return;
}
switch (target) {
#if FEATURE_EXT_framebuffer_blit
case GL_DRAW_FRAMEBUFFER_EXT:
if (!ctx->Extensions.EXT_framebuffer_blit) {
_mesa_error(ctx, GL_INVALID_ENUM, "glBindFramebufferEXT(target)");
return;
}
bindDrawBuf = GL_TRUE;
bindReadBuf = GL_FALSE;
break;
case GL_READ_FRAMEBUFFER_EXT:
if (!ctx->Extensions.EXT_framebuffer_blit) {
_mesa_error(ctx, GL_INVALID_ENUM, "glBindFramebufferEXT(target)");
return;
}
bindDrawBuf = GL_FALSE;
bindReadBuf = GL_TRUE;
break;
#endif
case GL_FRAMEBUFFER_EXT:
bindDrawBuf = GL_TRUE;
bindReadBuf = GL_TRUE;
break;
default:
_mesa_error(ctx, GL_INVALID_ENUM, "glBindFramebufferEXT(target)");
return;
}
if (framebuffer) {
/* Binding a user-created framebuffer object */
newDrawFb = _mesa_lookup_framebuffer(ctx, framebuffer);
if (newDrawFb == &DummyFramebuffer) {
/* ID was reserved, but no real framebuffer object made yet */
newDrawFb = NULL;
}
else if (!newDrawFb && ctx->Extensions.ARB_framebuffer_object) {
/* All FBO IDs must be Gen'd */
_mesa_error(ctx, GL_INVALID_OPERATION, "glBindFramebuffer(buffer)");
return;
}
if (!newDrawFb) {
/* create new framebuffer object */
newDrawFb = ctx->Driver.NewFramebuffer(ctx, framebuffer);
if (!newDrawFb) {
_mesa_error(ctx, GL_OUT_OF_MEMORY, "glBindFramebufferEXT");
return;
}
_mesa_HashInsert(ctx->Shared->FrameBuffers, framebuffer, newDrawFb);
}
newReadFb = newDrawFb;
}
else {
/* Binding the window system framebuffer (which was originally set
* with MakeCurrent).
*/
newDrawFb = ctx->WinSysDrawBuffer;
newReadFb = ctx->WinSysReadBuffer;
}
ASSERT(newDrawFb);
ASSERT(newDrawFb != &DummyFramebuffer);
/* save pointers to current/old framebuffers */
oldDrawFb = ctx->DrawBuffer;
oldReadFb = ctx->ReadBuffer;
/* check if really changing bindings */
if (oldDrawFb == newDrawFb)
bindDrawBuf = GL_FALSE;
if (oldReadFb == newReadFb)
bindReadBuf = GL_FALSE;
/*
* OK, now bind the new Draw/Read framebuffers, if they're changing.
*
* We also check if we're beginning and/or ending render-to-texture.
* When a framebuffer with texture attachments is unbound, call
* ctx->Driver.FinishRenderTexture().
* When a framebuffer with texture attachments is bound, call
* ctx->Driver.RenderTexture().
*
* Note that if the ReadBuffer has texture attachments we don't consider
* that a render-to-texture case.
*/
if (bindReadBuf) {
FLUSH_VERTICES(ctx, _NEW_BUFFERS);
/* check if old readbuffer was render-to-texture */
check_end_texture_render(ctx, oldReadFb);
_mesa_reference_framebuffer(&ctx->ReadBuffer, newReadFb);
}
if (bindDrawBuf) {
FLUSH_VERTICES(ctx, _NEW_BUFFERS);
/* check if old framebuffer had any texture attachments */
if (oldDrawFb)
check_end_texture_render(ctx, oldDrawFb);
/* check if newly bound framebuffer has any texture attachments */
check_begin_texture_render(ctx, newDrawFb);
_mesa_reference_framebuffer(&ctx->DrawBuffer, newDrawFb);
}
if ((bindDrawBuf || bindReadBuf) && ctx->Driver.BindFramebuffer) {
ctx->Driver.BindFramebuffer(ctx, target, newDrawFb, newReadFb);
}
}
void GLAPIENTRY
_mesa_DeleteFramebuffersEXT(GLsizei n, const GLuint *framebuffers)
{
GLint i;
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END(ctx);
FLUSH_VERTICES(ctx, _NEW_BUFFERS);
for (i = 0; i < n; i++) {
if (framebuffers[i] > 0) {
struct gl_framebuffer *fb;
fb = _mesa_lookup_framebuffer(ctx, framebuffers[i]);
if (fb) {
ASSERT(fb == &DummyFramebuffer || fb->Name == framebuffers[i]);
/* check if deleting currently bound framebuffer object */
if (ctx->Extensions.EXT_framebuffer_blit) {
/* separate draw/read binding points */
if (fb == ctx->DrawBuffer) {
/* bind default */
ASSERT(fb->RefCount >= 2);
_mesa_BindFramebufferEXT(GL_DRAW_FRAMEBUFFER_EXT, 0);
}
if (fb == ctx->ReadBuffer) {
/* bind default */
ASSERT(fb->RefCount >= 2);
_mesa_BindFramebufferEXT(GL_READ_FRAMEBUFFER_EXT, 0);
}
}
else {
/* only one binding point for read/draw buffers */
if (fb == ctx->DrawBuffer || fb == ctx->ReadBuffer) {
/* bind default */
ASSERT(fb->RefCount >= 2);
_mesa_BindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);
}
}
/* remove from hash table immediately, to free the ID */
_mesa_HashRemove(ctx->Shared->FrameBuffers, framebuffers[i]);
if (fb != &DummyFramebuffer) {
/* But the object will not be freed until it's no longer
* bound in any context.
*/
_mesa_reference_framebuffer(&fb, NULL);
}
}
}
}
}
void GLAPIENTRY
_mesa_GenFramebuffersEXT(GLsizei n, GLuint *framebuffers)
{
GET_CURRENT_CONTEXT(ctx);
GLuint first;
GLint i;
ASSERT_OUTSIDE_BEGIN_END(ctx);
if (n < 0) {
_mesa_error(ctx, GL_INVALID_VALUE, "glGenFramebuffersEXT(n)");
return;
}
if (!framebuffers)
return;
first = _mesa_HashFindFreeKeyBlock(ctx->Shared->FrameBuffers, n);
for (i = 0; i < n; i++) {
GLuint name = first + i;
framebuffers[i] = name;
/* insert dummy placeholder into hash table */
_glthread_LOCK_MUTEX(ctx->Shared->Mutex);
_mesa_HashInsert(ctx->Shared->FrameBuffers, name, &DummyFramebuffer);
_glthread_UNLOCK_MUTEX(ctx->Shared->Mutex);
}
}
GLenum GLAPIENTRY
_mesa_CheckFramebufferStatusEXT(GLenum target)
{
struct gl_framebuffer *buffer;
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, 0);
buffer = get_framebuffer_target(ctx, target);
if (!buffer) {
_mesa_error(ctx, GL_INVALID_ENUM, "glCheckFramebufferStatus(target)");
return 0;
}
if (_mesa_is_winsys_fbo(buffer)) {
/* The window system / default framebuffer is always complete */
return GL_FRAMEBUFFER_COMPLETE_EXT;
}
/* No need to flush here */
if (buffer->_Status != GL_FRAMEBUFFER_COMPLETE) {
_mesa_test_framebuffer_completeness(ctx, buffer);
}
return buffer->_Status;
}
/**
* Replicate the src attachment point. Used by framebuffer_texture() when
* the same texture is attached at GL_DEPTH_ATTACHMENT and
* GL_STENCIL_ATTACHMENT.
*/
static void
reuse_framebuffer_texture_attachment(struct gl_framebuffer *fb,
gl_buffer_index dst,
gl_buffer_index src)
{
struct gl_renderbuffer_attachment *dst_att = &fb->Attachment[dst];
struct gl_renderbuffer_attachment *src_att = &fb->Attachment[src];
assert(src_att->Texture != NULL);
assert(src_att->Renderbuffer != NULL);
_mesa_reference_texobj(&dst_att->Texture, src_att->Texture);
_mesa_reference_renderbuffer(&dst_att->Renderbuffer, src_att->Renderbuffer);
dst_att->Type = src_att->Type;
dst_att->Complete = src_att->Complete;
dst_att->TextureLevel = src_att->TextureLevel;
dst_att->Zoffset = src_att->Zoffset;
}
/**
* Common code called by glFramebufferTexture1D/2D/3DEXT() and
* glFramebufferTextureLayerEXT().
* Note: glFramebufferTextureLayerEXT() has no textarget parameter so we'll
* get textarget=0 in that case.
*/
static void
framebuffer_texture(struct gl_context *ctx, const char *caller, GLenum target,
GLenum attachment, GLenum textarget, GLuint texture,
GLint level, GLint zoffset)
{
struct gl_renderbuffer_attachment *att;
struct gl_texture_object *texObj = NULL;
struct gl_framebuffer *fb;
GLenum maxLevelsTarget;
ASSERT_OUTSIDE_BEGIN_END(ctx);
fb = get_framebuffer_target(ctx, target);
if (!fb) {
_mesa_error(ctx, GL_INVALID_ENUM,
"glFramebufferTexture%sEXT(target=0x%x)", caller, target);
return;
}
/* check framebuffer binding */
if (_mesa_is_winsys_fbo(fb)) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glFramebufferTexture%sEXT", caller);
return;
}
/* The textarget, level, and zoffset parameters are only validated if
* texture is non-zero.
*/
if (texture) {
GLboolean err = GL_TRUE;
texObj = _mesa_lookup_texture(ctx, texture);
if (texObj != NULL) {
if (textarget == 0) {
/* If textarget == 0 it means we're being called by
* glFramebufferTextureLayer() and textarget is not used.
* The only legal texture types for that function are 3D and
* 1D/2D arrays textures.
*/
err = (texObj->Target != GL_TEXTURE_3D) &&
(texObj->Target != GL_TEXTURE_1D_ARRAY_EXT) &&
(texObj->Target != GL_TEXTURE_2D_ARRAY_EXT);
}
else {
/* Make sure textarget is consistent with the texture's type */
err = (texObj->Target == GL_TEXTURE_CUBE_MAP)
? !_mesa_is_cube_face(textarget)
: (texObj->Target != textarget);
}
}
else {
/* can't render to a non-existant texture */
_mesa_error(ctx, GL_INVALID_OPERATION,
"glFramebufferTexture%sEXT(non existant texture)",
caller);
return;
}
if (err) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glFramebufferTexture%sEXT(texture target mismatch)",
caller);
return;
}
if (texObj->Target == GL_TEXTURE_3D) {
const GLint maxSize = 1 << (ctx->Const.Max3DTextureLevels - 1);
if (zoffset < 0 || zoffset >= maxSize) {
_mesa_error(ctx, GL_INVALID_VALUE,
"glFramebufferTexture%sEXT(zoffset)", caller);
return;
}
}
else if ((texObj->Target == GL_TEXTURE_1D_ARRAY_EXT) ||
(texObj->Target == GL_TEXTURE_2D_ARRAY_EXT)) {
if (zoffset < 0 || zoffset >= ctx->Const.MaxArrayTextureLayers) {
_mesa_error(ctx, GL_INVALID_VALUE,
"glFramebufferTexture%sEXT(layer)", caller);
return;
}
}
maxLevelsTarget = textarget ? textarget : texObj->Target;
if ((level < 0) ||
(level >= _mesa_max_texture_levels(ctx, maxLevelsTarget))) {
_mesa_error(ctx, GL_INVALID_VALUE,
"glFramebufferTexture%sEXT(level)", caller);
return;
}
}
att = _mesa_get_attachment(ctx, fb, attachment);
if (att == NULL) {
_mesa_error(ctx, GL_INVALID_ENUM,
"glFramebufferTexture%sEXT(attachment)", caller);
return;
}
FLUSH_VERTICES(ctx, _NEW_BUFFERS);
_glthread_LOCK_MUTEX(fb->Mutex);
if (texObj) {
if (attachment == GL_DEPTH_ATTACHMENT &&
texObj == fb->Attachment[BUFFER_STENCIL].Texture &&
level == fb->Attachment[BUFFER_STENCIL].TextureLevel &&
_mesa_tex_target_to_face(textarget) ==
fb->Attachment[BUFFER_STENCIL].CubeMapFace &&
zoffset == fb->Attachment[BUFFER_STENCIL].Zoffset) {
/* The texture object is already attached to the stencil attachment
* point. Don't create a new renderbuffer; just reuse the stencil
* attachment's. This is required to prevent a GL error in
* glGetFramebufferAttachmentParameteriv(GL_DEPTH_STENCIL).
*/
reuse_framebuffer_texture_attachment(fb, BUFFER_DEPTH,
BUFFER_STENCIL);
} else if (attachment == GL_STENCIL_ATTACHMENT &&
texObj == fb->Attachment[BUFFER_DEPTH].Texture &&
level == fb->Attachment[BUFFER_DEPTH].TextureLevel &&
_mesa_tex_target_to_face(textarget) ==
fb->Attachment[BUFFER_DEPTH].CubeMapFace &&
zoffset == fb->Attachment[BUFFER_DEPTH].Zoffset) {
/* As above, but with depth and stencil transposed. */
reuse_framebuffer_texture_attachment(fb, BUFFER_STENCIL,
BUFFER_DEPTH);
} else {
_mesa_set_texture_attachment(ctx, fb, att, texObj, textarget,
level, zoffset);
if (attachment == GL_DEPTH_STENCIL_ATTACHMENT) {
/* Above we created a new renderbuffer and attached it to the
* depth attachment point. Now attach it to the stencil attachment
* point too.
*/
assert(att == &fb->Attachment[BUFFER_DEPTH]);
reuse_framebuffer_texture_attachment(fb,BUFFER_STENCIL,
BUFFER_DEPTH);
}
}
/* Set the render-to-texture flag. We'll check this flag in
* glTexImage() and friends to determine if we need to revalidate
* any FBOs that might be rendering into this texture.
* This flag never gets cleared since it's non-trivial to determine
* when all FBOs might be done rendering to this texture. That's OK
* though since it's uncommon to render to a texture then repeatedly
* call glTexImage() to change images in the texture.
*/
texObj->_RenderToTexture = GL_TRUE;
}
else {
_mesa_remove_attachment(ctx, att);
if (attachment == GL_DEPTH_STENCIL_ATTACHMENT) {
assert(att == &fb->Attachment[BUFFER_DEPTH]);
_mesa_remove_attachment(ctx, &fb->Attachment[BUFFER_STENCIL]);
}
}
invalidate_framebuffer(fb);
_glthread_UNLOCK_MUTEX(fb->Mutex);
}
void GLAPIENTRY
_mesa_FramebufferTexture1DEXT(GLenum target, GLenum attachment,
GLenum textarget, GLuint texture, GLint level)
{
GET_CURRENT_CONTEXT(ctx);
if (texture != 0) {
GLboolean error;
switch (textarget) {
case GL_TEXTURE_1D:
error = GL_FALSE;
break;
case GL_TEXTURE_1D_ARRAY:
error = !ctx->Extensions.EXT_texture_array;
break;
default:
error = GL_TRUE;
}
if (error) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glFramebufferTexture1DEXT(textarget=%s)",
_mesa_lookup_enum_by_nr(textarget));
return;
}
}
framebuffer_texture(ctx, "1D", target, attachment, textarget, texture,
level, 0);
}
void GLAPIENTRY
_mesa_FramebufferTexture2DEXT(GLenum target, GLenum attachment,
GLenum textarget, GLuint texture, GLint level)
{
GET_CURRENT_CONTEXT(ctx);
if (texture != 0) {
GLboolean error;
switch (textarget) {
case GL_TEXTURE_2D:
error = GL_FALSE;
break;
case GL_TEXTURE_RECTANGLE:
error = _mesa_is_gles(ctx)
|| !ctx->Extensions.NV_texture_rectangle;
break;
case GL_TEXTURE_CUBE_MAP_POSITIVE_X:
case GL_TEXTURE_CUBE_MAP_NEGATIVE_X:
case GL_TEXTURE_CUBE_MAP_POSITIVE_Y:
case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y:
case GL_TEXTURE_CUBE_MAP_POSITIVE_Z:
case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z:
error = !ctx->Extensions.ARB_texture_cube_map;
break;
case GL_TEXTURE_2D_ARRAY:
error = (_mesa_is_gles(ctx) && ctx->Version < 30)
|| !ctx->Extensions.EXT_texture_array;
break;
default:
error = GL_TRUE;
}
if (error) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glFramebufferTexture2DEXT(textarget=%s)",
_mesa_lookup_enum_by_nr(textarget));
return;
}
}
framebuffer_texture(ctx, "2D", target, attachment, textarget, texture,
level, 0);
}
void GLAPIENTRY
_mesa_FramebufferTexture3DEXT(GLenum target, GLenum attachment,
GLenum textarget, GLuint texture,
GLint level, GLint zoffset)
{
GET_CURRENT_CONTEXT(ctx);
if ((texture != 0) && (textarget != GL_TEXTURE_3D)) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glFramebufferTexture3DEXT(textarget)");
return;
}
framebuffer_texture(ctx, "3D", target, attachment, textarget, texture,
level, zoffset);
}
void GLAPIENTRY
_mesa_FramebufferTextureLayerEXT(GLenum target, GLenum attachment,
GLuint texture, GLint level, GLint layer)
{
GET_CURRENT_CONTEXT(ctx);
framebuffer_texture(ctx, "Layer", target, attachment, 0, texture,
level, layer);
}
void GLAPIENTRY
_mesa_FramebufferRenderbufferEXT(GLenum target, GLenum attachment,
GLenum renderbufferTarget,
GLuint renderbuffer)
{
struct gl_renderbuffer_attachment *att;
struct gl_framebuffer *fb;
struct gl_renderbuffer *rb;
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END(ctx);
fb = get_framebuffer_target(ctx, target);
if (!fb) {
_mesa_error(ctx, GL_INVALID_ENUM, "glFramebufferRenderbufferEXT(target)");
return;
}
if (renderbufferTarget != GL_RENDERBUFFER_EXT) {
_mesa_error(ctx, GL_INVALID_ENUM,
"glFramebufferRenderbufferEXT(renderbufferTarget)");
return;
}
if (_mesa_is_winsys_fbo(fb)) {
/* Can't attach new renderbuffers to a window system framebuffer */
_mesa_error(ctx, GL_INVALID_OPERATION, "glFramebufferRenderbufferEXT");
return;
}
att = _mesa_get_attachment(ctx, fb, attachment);
if (att == NULL) {
_mesa_error(ctx, GL_INVALID_ENUM,
"glFramebufferRenderbufferEXT(invalid attachment %s)",
_mesa_lookup_enum_by_nr(attachment));
return;
}
if (renderbuffer) {
rb = _mesa_lookup_renderbuffer(ctx, renderbuffer);
if (!rb) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glFramebufferRenderbufferEXT(non-existant"
" renderbuffer %u)", renderbuffer);
return;
}
else if (rb == &DummyRenderbuffer) {
/* This is what NVIDIA does */
_mesa_error(ctx, GL_INVALID_VALUE,
"glFramebufferRenderbufferEXT(renderbuffer %u)",
renderbuffer);
return;
}
}
else {
/* remove renderbuffer attachment */
rb = NULL;
}
if (attachment == GL_DEPTH_STENCIL_ATTACHMENT &&
rb && rb->Format != MESA_FORMAT_NONE) {
/* make sure the renderbuffer is a depth/stencil format */
const GLenum baseFormat = _mesa_get_format_base_format(rb->Format);
if (baseFormat != GL_DEPTH_STENCIL) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glFramebufferRenderbufferEXT(renderbuffer"
" is not DEPTH_STENCIL format)");
return;
}
}
FLUSH_VERTICES(ctx, _NEW_BUFFERS);
assert(ctx->Driver.FramebufferRenderbuffer);
ctx->Driver.FramebufferRenderbuffer(ctx, fb, attachment, rb);
/* Some subsequent GL commands may depend on the framebuffer's visual
* after the binding is updated. Update visual info now.
*/
_mesa_update_framebuffer_visual(ctx, fb);
}
void GLAPIENTRY
_mesa_GetFramebufferAttachmentParameterivEXT(GLenum target, GLenum attachment,
GLenum pname, GLint *params)
{
const struct gl_renderbuffer_attachment *att;
struct gl_framebuffer *buffer;
GLenum err;
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END(ctx);
/* The error differs in GL and GLES. */
err = _mesa_is_desktop_gl(ctx) ? GL_INVALID_OPERATION : GL_INVALID_ENUM;
buffer = get_framebuffer_target(ctx, target);
if (!buffer) {
_mesa_error(ctx, GL_INVALID_ENUM,
"glGetFramebufferAttachmentParameterivEXT(target)");
return;
}
if (_mesa_is_winsys_fbo(buffer)) {
/* Page 126 (page 136 of the PDF) of the OpenGL ES 2.0.25 spec
* says:
*
* "If the framebuffer currently bound to target is zero, then
* INVALID_OPERATION is generated."
*
* The EXT_framebuffer_object spec has the same wording, and the
* OES_framebuffer_object spec refers to the EXT_framebuffer_object
* spec.
*/
if (!_mesa_is_desktop_gl(ctx) || !ctx->Extensions.ARB_framebuffer_object) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glGetFramebufferAttachmentParameteriv(bound FBO = 0)");
return;
}
/* the default / window-system FBO */
att = _mesa_get_fb0_attachment(ctx, buffer, attachment);
}
else {
/* user-created framebuffer FBO */
att = _mesa_get_attachment(ctx, buffer, attachment);
}
if (att == NULL) {
_mesa_error(ctx, GL_INVALID_ENUM,
"glGetFramebufferAttachmentParameterivEXT(attachment)");
return;
}
if (attachment == GL_DEPTH_STENCIL_ATTACHMENT) {
/* the depth and stencil attachments must point to the same buffer */
const struct gl_renderbuffer_attachment *depthAtt, *stencilAtt;
depthAtt = _mesa_get_attachment(ctx, buffer, GL_DEPTH_ATTACHMENT);
stencilAtt = _mesa_get_attachment(ctx, buffer, GL_STENCIL_ATTACHMENT);
if (depthAtt->Renderbuffer != stencilAtt->Renderbuffer) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glGetFramebufferAttachmentParameterivEXT(DEPTH/STENCIL"
" attachments differ)");
return;
}
}
/* No need to flush here */
switch (pname) {
case GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE_EXT:
*params = _mesa_is_winsys_fbo(buffer)
? GL_FRAMEBUFFER_DEFAULT : att->Type;
return;
case GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME_EXT:
if (att->Type == GL_RENDERBUFFER_EXT) {
*params = att->Renderbuffer->Name;
}
else if (att->Type == GL_TEXTURE) {
*params = att->Texture->Name;
}
else {
assert(att->Type == GL_NONE);
if (_mesa_is_desktop_gl(ctx) || _mesa_is_gles3(ctx)) {
*params = 0;
} else {
goto invalid_pname_enum;
}
}
return;
case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL_EXT:
if (att->Type == GL_TEXTURE) {
*params = att->TextureLevel;
}
else if (att->Type == GL_NONE) {
_mesa_error(ctx, err,
"glGetFramebufferAttachmentParameterivEXT(pname)");
}
else {
goto invalid_pname_enum;
}
return;
case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE_EXT:
if (att->Type == GL_TEXTURE) {
if (att->Texture && att->Texture->Target == GL_TEXTURE_CUBE_MAP) {
*params = GL_TEXTURE_CUBE_MAP_POSITIVE_X + att->CubeMapFace;
}
else {
*params = 0;
}
}
else if (att->Type == GL_NONE) {
_mesa_error(ctx, err,
"glGetFramebufferAttachmentParameterivEXT(pname)");
}
else {
goto invalid_pname_enum;
}
return;
case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_3D_ZOFFSET_EXT:
if (ctx->API == API_OPENGLES) {
goto invalid_pname_enum;
} else if (att->Type == GL_NONE) {
_mesa_error(ctx, err,
"glGetFramebufferAttachmentParameterivEXT(pname)");
} else if (att->Type == GL_TEXTURE) {
if (att->Texture && att->Texture->Target == GL_TEXTURE_3D) {
*params = att->Zoffset;
}
else {
*params = 0;
}
}
else {
goto invalid_pname_enum;
}
return;
case GL_FRAMEBUFFER_ATTACHMENT_COLOR_ENCODING:
if ((!_mesa_is_desktop_gl(ctx) || !ctx->Extensions.ARB_framebuffer_object)
&& !_mesa_is_gles3(ctx)) {
goto invalid_pname_enum;
}
else if (att->Type == GL_NONE) {
_mesa_error(ctx, err,
"glGetFramebufferAttachmentParameterivEXT(pname)");
}
else {
if (ctx->Extensions.EXT_framebuffer_sRGB) {
*params = _mesa_get_format_color_encoding(att->Renderbuffer->Format);
}
else {
/* According to ARB_framebuffer_sRGB, we should return LINEAR
* if the sRGB conversion is unsupported. */
*params = GL_LINEAR;
}
}
return;
case GL_FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE:
if ((ctx->API != API_OPENGL || !ctx->Extensions.ARB_framebuffer_object)
&& ctx->API != API_OPENGL_CORE
&& !_mesa_is_gles3(ctx)) {
goto invalid_pname_enum;
}
else if (att->Type == GL_NONE) {
_mesa_error(ctx, err,
"glGetFramebufferAttachmentParameterivEXT(pname)");
}
else {
gl_format format = att->Renderbuffer->Format;
if (format == MESA_FORMAT_S8) {
/* special cases */
*params = GL_INDEX;
}
else if (format == MESA_FORMAT_Z32_FLOAT_X24S8) {
/* depends on the attachment parameter */
if (attachment == GL_STENCIL_ATTACHMENT) {
*params = GL_INDEX;
}
else {
*params = GL_FLOAT;
}
}
else {
*params = _mesa_get_format_datatype(format);
}
}
return;
case GL_FRAMEBUFFER_ATTACHMENT_RED_SIZE:
case GL_FRAMEBUFFER_ATTACHMENT_GREEN_SIZE:
case GL_FRAMEBUFFER_ATTACHMENT_BLUE_SIZE:
case GL_FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE:
case GL_FRAMEBUFFER_ATTACHMENT_DEPTH_SIZE:
case GL_FRAMEBUFFER_ATTACHMENT_STENCIL_SIZE:
if ((!_mesa_is_desktop_gl(ctx) || !ctx->Extensions.ARB_framebuffer_object)
&& !_mesa_is_gles3(ctx)) {
goto invalid_pname_enum;
}
else if (att->Type == GL_NONE) {
_mesa_error(ctx, err,
"glGetFramebufferAttachmentParameterivEXT(pname)");
}
else if (att->Texture) {
const struct gl_texture_image *texImage =
_mesa_select_tex_image(ctx, att->Texture, att->Texture->Target,
att->TextureLevel);
if (texImage) {
*params = get_component_bits(pname, texImage->_BaseFormat,
texImage->TexFormat);
}
else {
*params = 0;
}
}
else if (att->Renderbuffer) {
*params = get_component_bits(pname, att->Renderbuffer->_BaseFormat,
att->Renderbuffer->Format);
}
else {
_mesa_problem(ctx, "glGetFramebufferAttachmentParameterivEXT:"
" invalid FBO attachment structure");
}
return;
default:
goto invalid_pname_enum;
}
return;
invalid_pname_enum:
_mesa_error(ctx, GL_INVALID_ENUM,
"glGetFramebufferAttachmentParameteriv(pname)");
return;
}
void GLAPIENTRY
_mesa_GenerateMipmapEXT(GLenum target)
{
struct gl_texture_image *srcImage;
struct gl_texture_object *texObj;
GLboolean error;
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END(ctx);
FLUSH_VERTICES(ctx, _NEW_BUFFERS);
switch (target) {
case GL_TEXTURE_1D:
error = _mesa_is_gles(ctx);
break;
case GL_TEXTURE_2D:
error = GL_FALSE;
break;
case GL_TEXTURE_3D:
error = ctx->API == API_OPENGLES;
break;
case GL_TEXTURE_CUBE_MAP:
error = !ctx->Extensions.ARB_texture_cube_map;
break;
case GL_TEXTURE_1D_ARRAY:
error = _mesa_is_gles(ctx) || !ctx->Extensions.EXT_texture_array;
break;
case GL_TEXTURE_2D_ARRAY:
error = (_mesa_is_gles(ctx) && ctx->Version < 30)
|| !ctx->Extensions.EXT_texture_array;
break;
default:
error = GL_TRUE;
}
if (error) {
_mesa_error(ctx, GL_INVALID_ENUM, "glGenerateMipmapEXT(target=%s)",
_mesa_lookup_enum_by_nr(target));
return;
}
texObj = _mesa_get_current_tex_object(ctx, target);
if (texObj->BaseLevel >= texObj->MaxLevel) {
/* nothing to do */
return;
}
if (texObj->Target == GL_TEXTURE_CUBE_MAP &&
!_mesa_cube_complete(texObj)) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glGenerateMipmap(incomplete cube map)");
return;
}
_mesa_lock_texture(ctx, texObj);
srcImage = _mesa_select_tex_image(ctx, texObj, target, texObj->BaseLevel);
if (!srcImage) {
_mesa_unlock_texture(ctx, texObj);
_mesa_error(ctx, GL_INVALID_OPERATION,
"glGenerateMipmap(zero size base image)");
return;
}
if (_mesa_is_enum_format_integer(srcImage->InternalFormat) ||
_mesa_is_depthstencil_format(srcImage->InternalFormat) ||
_mesa_is_stencil_format(srcImage->InternalFormat)) {
_mesa_unlock_texture(ctx, texObj);
_mesa_error(ctx, GL_INVALID_OPERATION,
"glGenerateMipmap(invalid internal format)");
return;
}
if (target == GL_TEXTURE_CUBE_MAP) {
GLuint face;
for (face = 0; face < 6; face++)
ctx->Driver.GenerateMipmap(ctx,
GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB + face,
texObj);
}
else {
ctx->Driver.GenerateMipmap(ctx, target, texObj);
}
_mesa_unlock_texture(ctx, texObj);
}
#if FEATURE_EXT_framebuffer_blit
static const struct gl_renderbuffer_attachment *
find_attachment(const struct gl_framebuffer *fb,
const struct gl_renderbuffer *rb)
{
GLuint i;
for (i = 0; i < Elements(fb->Attachment); i++) {
if (fb->Attachment[i].Renderbuffer == rb)
return &fb->Attachment[i];
}
return NULL;
}
/**
* Helper function for checking if the datatypes of color buffers are
* compatible for glBlitFramebuffer. From the 3.1 spec, page 198:
*
* "GL_INVALID_OPERATION is generated if mask contains GL_COLOR_BUFFER_BIT
* and any of the following conditions hold:
* - The read buffer contains fixed-point or floating-point values and any
* draw buffer contains neither fixed-point nor floating-point values.
* - The read buffer contains unsigned integer values and any draw buffer
* does not contain unsigned integer values.
* - The read buffer contains signed integer values and any draw buffer
* does not contain signed integer values."
*/
static GLboolean
compatible_color_datatypes(gl_format srcFormat, gl_format dstFormat)
{
GLenum srcType = _mesa_get_format_datatype(srcFormat);
GLenum dstType = _mesa_get_format_datatype(dstFormat);
if (srcType != GL_INT && srcType != GL_UNSIGNED_INT) {
assert(srcType == GL_UNSIGNED_NORMALIZED ||
srcType == GL_SIGNED_NORMALIZED ||
srcType == GL_FLOAT);
/* Boil any of those types down to GL_FLOAT */
srcType = GL_FLOAT;
}
if (dstType != GL_INT && dstType != GL_UNSIGNED_INT) {
assert(dstType == GL_UNSIGNED_NORMALIZED ||
dstType == GL_SIGNED_NORMALIZED ||
dstType == GL_FLOAT);
/* Boil any of those types down to GL_FLOAT */
dstType = GL_FLOAT;
}
return srcType == dstType;
}
/**
* Return the equivalent non-generic internal format.
* This is useful for comparing whether two internal formats are semantically
* equivalent.
*/
static GLenum
get_nongeneric_internalformat(GLenum format)
{
switch (format) {
/* GL 1.1 formats. */
case 4:
case GL_RGBA:
return GL_RGBA8;
case 3:
case GL_RGB:
return GL_RGB8;
case 2:
case GL_LUMINANCE_ALPHA:
return GL_LUMINANCE8_ALPHA8;
case 1:
case GL_LUMINANCE:
return GL_LUMINANCE8;
case GL_ALPHA:
return GL_ALPHA8;
case GL_INTENSITY:
return GL_INTENSITY8;
/* GL_ARB_texture_rg */
case GL_RED:
return GL_R8;
case GL_RG:
return GL_RG8;
/* GL_EXT_texture_sRGB */
case GL_SRGB:
return GL_SRGB8;
case GL_SRGB_ALPHA:
return GL_SRGB8_ALPHA8;
case GL_SLUMINANCE:
return GL_SLUMINANCE8;
case GL_SLUMINANCE_ALPHA:
return GL_SLUMINANCE8_ALPHA8;
/* GL_EXT_texture_snorm */
case GL_RGBA_SNORM:
return GL_RGBA8_SNORM;
case GL_RGB_SNORM:
return GL_RGB8_SNORM;
case GL_RG_SNORM:
return GL_RG8_SNORM;
case GL_RED_SNORM:
return GL_R8_SNORM;
case GL_LUMINANCE_ALPHA_SNORM:
return GL_LUMINANCE8_ALPHA8_SNORM;
case GL_LUMINANCE_SNORM:
return GL_LUMINANCE8_SNORM;
case GL_ALPHA_SNORM:
return GL_ALPHA8_SNORM;
case GL_INTENSITY_SNORM:
return GL_INTENSITY8_SNORM;
default:
return format;
}
}
static GLenum
get_linear_internalformat(GLenum format)
{
switch (format) {
case GL_SRGB:
return GL_RGB;
case GL_SRGB_ALPHA:
return GL_RGBA;
case GL_SRGB8:
return GL_RGB8;
case GL_SRGB8_ALPHA8:
return GL_RGBA8;
case GL_SLUMINANCE:
return GL_LUMINANCE8;
case GL_SLUMINANCE_ALPHA:
return GL_LUMINANCE8_ALPHA8;
default:
return format;
}
}
static GLboolean
compatible_resolve_formats(const struct gl_renderbuffer *colorReadRb,
const struct gl_renderbuffer *colorDrawRb)
{
GLenum readFormat, drawFormat;
/* The simple case where we know the backing Mesa formats are the same.
*/
if (_mesa_get_srgb_format_linear(colorReadRb->Format) ==
_mesa_get_srgb_format_linear(colorDrawRb->Format)) {
return GL_TRUE;
}
/* The Mesa formats are different, so we must check whether the internal
* formats are compatible.
*
* Under some circumstances, the user may request e.g. two GL_RGBA8
* textures and get two entirely different Mesa formats like RGBA8888 and
* ARGB8888. Drivers behaving like that should be able to cope with
* non-matching formats by themselves, because it's not the user's fault.
*
* Blits between linear and sRGB formats are also allowed.
*/
readFormat = get_nongeneric_internalformat(colorReadRb->InternalFormat);
drawFormat = get_nongeneric_internalformat(colorDrawRb->InternalFormat);
readFormat = get_linear_internalformat(readFormat);
drawFormat = get_linear_internalformat(drawFormat);
if (readFormat == drawFormat) {
return GL_TRUE;
}
return GL_FALSE;
}
/**
* Blit rectangular region, optionally from one framebuffer to another.
*
* Note, if the src buffer is multisampled and the dest is not, this is
* when the samples must be resolved to a single color.
*/
void GLAPIENTRY
_mesa_BlitFramebufferEXT(GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1,
GLint dstX0, GLint dstY0, GLint dstX1, GLint dstY1,
GLbitfield mask, GLenum filter)
{
const GLbitfield legalMaskBits = (GL_COLOR_BUFFER_BIT |
GL_DEPTH_BUFFER_BIT |
GL_STENCIL_BUFFER_BIT);
const struct gl_framebuffer *readFb, *drawFb;
const struct gl_renderbuffer *colorReadRb, *colorDrawRb;
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END(ctx);
FLUSH_VERTICES(ctx, _NEW_BUFFERS);
if (MESA_VERBOSE & VERBOSE_API)
_mesa_debug(ctx,
"glBlitFramebuffer(%d, %d, %d, %d, %d, %d, %d, %d, 0x%x, %s)\n",
srcX0, srcY0, srcX1, srcY1,
dstX0, dstY0, dstX1, dstY1,
mask, _mesa_lookup_enum_by_nr(filter));
if (ctx->NewState) {
_mesa_update_state(ctx);
}
readFb = ctx->ReadBuffer;
drawFb = ctx->DrawBuffer;
if (!readFb || !drawFb) {
/* This will normally never happen but someday we may want to
* support MakeCurrent() with no drawables.
*/
return;
}
/* check for complete framebuffers */
if (drawFb->_Status != GL_FRAMEBUFFER_COMPLETE_EXT ||
readFb->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) {
_mesa_error(ctx, GL_INVALID_FRAMEBUFFER_OPERATION_EXT,
"glBlitFramebufferEXT(incomplete draw/read buffers)");
return;
}
if (filter != GL_NEAREST && filter != GL_LINEAR) {
_mesa_error(ctx, GL_INVALID_ENUM, "glBlitFramebufferEXT(filter)");
return;
}
if (mask & ~legalMaskBits) {
_mesa_error( ctx, GL_INVALID_VALUE, "glBlitFramebufferEXT(mask)");
return;
}
/* depth/stencil must be blitted with nearest filtering */
if ((mask & (GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT))
&& filter != GL_NEAREST) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glBlitFramebufferEXT(depth/stencil requires GL_NEAREST filter)");
return;
}
/* get color read/draw renderbuffers */
if (mask & GL_COLOR_BUFFER_BIT) {
colorReadRb = readFb->_ColorReadBuffer;
colorDrawRb = drawFb->_ColorDrawBuffers[0];
/* From the EXT_framebuffer_object spec:
*
* "If a buffer is specified in <mask> and does not exist in both
* the read and draw framebuffers, the corresponding bit is silently
* ignored."
*/
if ((colorReadRb == NULL) || (colorDrawRb == NULL)) {
colorReadRb = colorDrawRb = NULL;
mask &= ~GL_COLOR_BUFFER_BIT;
}
else if (!compatible_color_datatypes(colorReadRb->Format,
colorDrawRb->Format)) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glBlitFramebufferEXT(color buffer datatypes mismatch)");
return;
}
}
else {
colorReadRb = colorDrawRb = NULL;
}
if (mask & GL_STENCIL_BUFFER_BIT) {
struct gl_renderbuffer *readRb =
readFb->Attachment[BUFFER_STENCIL].Renderbuffer;
struct gl_renderbuffer *drawRb =
drawFb->Attachment[BUFFER_STENCIL].Renderbuffer;
/* From the EXT_framebuffer_object spec:
*
* "If a buffer is specified in <mask> and does not exist in both
* the read and draw framebuffers, the corresponding bit is silently
* ignored."
*/
if ((readRb == NULL) || (drawRb == NULL)) {
mask &= ~GL_STENCIL_BUFFER_BIT;
}
else if (_mesa_get_format_bits(readRb->Format, GL_STENCIL_BITS) !=
_mesa_get_format_bits(drawRb->Format, GL_STENCIL_BITS)) {
/* There is no need to check the stencil datatype here, because
* there is only one: GL_UNSIGNED_INT.
*/
_mesa_error(ctx, GL_INVALID_OPERATION,
"glBlitFramebufferEXT(stencil buffer size mismatch)");
return;
}
}
if (mask & GL_DEPTH_BUFFER_BIT) {
struct gl_renderbuffer *readRb =
readFb->Attachment[BUFFER_DEPTH].Renderbuffer;
struct gl_renderbuffer *drawRb =
drawFb->Attachment[BUFFER_DEPTH].Renderbuffer;
/* From the EXT_framebuffer_object spec:
*
* "If a buffer is specified in <mask> and does not exist in both
* the read and draw framebuffers, the corresponding bit is silently
* ignored."
*/
if ((readRb == NULL) || (drawRb == NULL)) {
mask &= ~GL_DEPTH_BUFFER_BIT;
}
else if ((_mesa_get_format_bits(readRb->Format, GL_DEPTH_BITS) !=
_mesa_get_format_bits(drawRb->Format, GL_DEPTH_BITS)) ||
(_mesa_get_format_datatype(readRb->Format) !=
_mesa_get_format_datatype(drawRb->Format))) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glBlitFramebufferEXT(depth buffer format mismatch)");
return;
}
}
if (readFb->Visual.samples > 0 &&
drawFb->Visual.samples > 0 &&
readFb->Visual.samples != drawFb->Visual.samples) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glBlitFramebufferEXT(mismatched samples)");
return;
}
/* extra checks for multisample copies... */
if (readFb->Visual.samples > 0 || drawFb->Visual.samples > 0) {
/* src and dest region sizes must be the same */
if (abs(srcX1 - srcX0) != abs(dstX1 - dstX0) ||
abs(srcY1 - srcY0) != abs(dstY1 - dstY0)) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glBlitFramebufferEXT(bad src/dst multisample region sizes)");
return;
}
/* color formats must match */
if (colorReadRb &&
colorDrawRb &&
!compatible_resolve_formats(colorReadRb, colorDrawRb)) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glBlitFramebufferEXT(bad src/dst multisample pixel formats)");
return;
}
}
if (filter == GL_LINEAR && (mask & GL_COLOR_BUFFER_BIT)) {
/* 3.1 spec, page 199:
* "Calling BlitFramebuffer will result in an INVALID_OPERATION error
* if filter is LINEAR and read buffer contains integer data."
*/
GLenum type = _mesa_get_format_datatype(colorReadRb->Format);
if (type == GL_INT || type == GL_UNSIGNED_INT) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glBlitFramebufferEXT(integer color type)");
return;
}
}
if (!ctx->Extensions.EXT_framebuffer_blit) {
_mesa_error(ctx, GL_INVALID_OPERATION, "glBlitFramebufferEXT");
return;
}
/* Debug code */
if (DEBUG_BLIT) {
printf("glBlitFramebuffer(%d, %d, %d, %d, %d, %d, %d, %d,"
" 0x%x, 0x%x)\n",
srcX0, srcY0, srcX1, srcY1,
dstX0, dstY0, dstX1, dstY1,
mask, filter);
if (colorReadRb) {
const struct gl_renderbuffer_attachment *att;
att = find_attachment(readFb, colorReadRb);
printf(" Src FBO %u RB %u (%dx%d) ",
readFb->Name, colorReadRb->Name,
colorReadRb->Width, colorReadRb->Height);
if (att && att->Texture) {
printf("Tex %u tgt 0x%x level %u face %u",
att->Texture->Name,
att->Texture->Target,
att->TextureLevel,
att->CubeMapFace);
}
printf("\n");
att = find_attachment(drawFb, colorDrawRb);
printf(" Dst FBO %u RB %u (%dx%d) ",
drawFb->Name, colorDrawRb->Name,
colorDrawRb->Width, colorDrawRb->Height);
if (att && att->Texture) {
printf("Tex %u tgt 0x%x level %u face %u",
att->Texture->Name,
att->Texture->Target,
att->TextureLevel,
att->CubeMapFace);
}
printf("\n");
}
}
if (!mask) {
return;
}
ASSERT(ctx->Driver.BlitFramebuffer);
ctx->Driver.BlitFramebuffer(ctx,
srcX0, srcY0, srcX1, srcY1,
dstX0, dstY0, dstX1, dstY1,
mask, filter);
}
#endif /* FEATURE_EXT_framebuffer_blit */
#if FEATURE_ARB_geometry_shader4
void GLAPIENTRY
_mesa_FramebufferTextureARB(GLenum target, GLenum attachment,
GLuint texture, GLint level)
{
GET_CURRENT_CONTEXT(ctx);
_mesa_error(ctx, GL_INVALID_OPERATION,
"glFramebufferTextureARB "
"not implemented!");
}
void GLAPIENTRY
_mesa_FramebufferTextureFaceARB(GLenum target, GLenum attachment,
GLuint texture, GLint level, GLenum face)
{
GET_CURRENT_CONTEXT(ctx);
_mesa_error(ctx, GL_INVALID_OPERATION,
"glFramebufferTextureFaceARB "
"not implemented!");
}
#endif /* FEATURE_ARB_geometry_shader4 */
static void
invalidate_framebuffer_storage(GLenum target, GLsizei numAttachments,
const GLenum *attachments, GLint x, GLint y,
GLsizei width, GLsizei height, const char *name)
{
int i;
struct gl_framebuffer *fb;
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END(ctx);
fb = get_framebuffer_target(ctx, target);
if (!fb) {
_mesa_error(ctx, GL_INVALID_ENUM, "%s(target)", name);
return;
}
if (numAttachments < 0) {
_mesa_error(ctx, GL_INVALID_VALUE,
"%s(numAttachments < 0)", name);
return;
}
/* The GL_ARB_invalidate_subdata spec says:
*
* "If an attachment is specified that does not exist in the
* framebuffer bound to <target>, it is ignored."
*
* It also says:
*
* "If <attachments> contains COLOR_ATTACHMENTm and m is greater than
* or equal to the value of MAX_COLOR_ATTACHMENTS, then the error
* INVALID_OPERATION is generated."
*
* No mention is made of GL_AUXi being out of range. Therefore, we allow
* any enum that can be allowed by the API (OpenGL ES 3.0 has a different
* set of retrictions).
*/
for (i = 0; i < numAttachments; i++) {
if (_mesa_is_winsys_fbo(fb)) {
switch (attachments[i]) {
case GL_ACCUM:
case GL_AUX0:
case GL_AUX1:
case GL_AUX2:
case GL_AUX3:
/* Accumulation buffers and auxilary buffers were removed in
* OpenGL 3.1, and they never existed in OpenGL ES.
*/
if (ctx->API != API_OPENGL)
goto invalid_enum;
break;
case GL_COLOR:
case GL_DEPTH:
case GL_STENCIL:
break;
case GL_BACK_LEFT:
case GL_BACK_RIGHT:
case GL_FRONT_LEFT:
case GL_FRONT_RIGHT:
if (!_mesa_is_desktop_gl(ctx))
goto invalid_enum;
break;
default:
goto invalid_enum;
}
} else {
switch (attachments[i]) {
case GL_DEPTH_ATTACHMENT:
case GL_STENCIL_ATTACHMENT:
break;
case GL_COLOR_ATTACHMENT0:
case GL_COLOR_ATTACHMENT1:
case GL_COLOR_ATTACHMENT2:
case GL_COLOR_ATTACHMENT3:
case GL_COLOR_ATTACHMENT4:
case GL_COLOR_ATTACHMENT5:
case GL_COLOR_ATTACHMENT6:
case GL_COLOR_ATTACHMENT7:
case GL_COLOR_ATTACHMENT8:
case GL_COLOR_ATTACHMENT9:
case GL_COLOR_ATTACHMENT10:
case GL_COLOR_ATTACHMENT11:
case GL_COLOR_ATTACHMENT12:
case GL_COLOR_ATTACHMENT13:
case GL_COLOR_ATTACHMENT14:
case GL_COLOR_ATTACHMENT15: {
const int k = attachments[i] - GL_COLOR_ATTACHMENT0;
if (k >= ctx->Const.MaxColorAttachments) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"%s(attachment >= max. color attachments)", name);
return;
}
}
default:
goto invalid_enum;
}
}
}
/* We don't actually do anything for this yet. Just return after
* validating the parameters and generating the required errors.
*/
return;
invalid_enum:
_mesa_error(ctx, GL_INVALID_ENUM, "%s(attachment)", name);
return;
}
void GLAPIENTRY
_mesa_InvalidateSubFramebuffer(GLenum target, GLsizei numAttachments,
const GLenum *attachments, GLint x, GLint y,
GLsizei width, GLsizei height)
{
invalidate_framebuffer_storage(target, numAttachments, attachments,
x, y, width, height,
"glInvalidateSubFramebuffer");
}
void GLAPIENTRY
_mesa_InvalidateFramebuffer(GLenum target, GLsizei numAttachments,
const GLenum *attachments)
{
/* The GL_ARB_invalidate_subdata spec says:
*
* "The command
*
* void InvalidateFramebuffer(enum target,
* sizei numAttachments,
* const enum *attachments);
*
* is equivalent to the command InvalidateSubFramebuffer with <x>, <y>,
* <width>, <height> equal to 0, 0, <MAX_VIEWPORT_DIMS[0]>,
* <MAX_VIEWPORT_DIMS[1]> respectively."
*/
invalidate_framebuffer_storage(target, numAttachments, attachments,
0, 0, MAX_VIEWPORT_WIDTH, MAX_VIEWPORT_HEIGHT,
"glInvalidateFramebuffer");
}