| /************************************************************************** |
| * |
| * Copyright 2007 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, sub license, 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 (including the |
| * next paragraph) 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 NON-INFRINGEMENT. |
| * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS 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. |
| * |
| **************************************************************************/ |
| |
| |
| /** |
| * Framebuffer/renderbuffer functions. |
| * |
| * \author Brian Paul |
| */ |
| |
| |
| |
| #include "main/context.h" |
| #include "main/fbobject.h" |
| #include "main/framebuffer.h" |
| #include "main/glformats.h" |
| #include "main/macros.h" |
| #include "main/renderbuffer.h" |
| #include "main/state.h" |
| |
| #include "pipe/p_context.h" |
| #include "pipe/p_defines.h" |
| #include "pipe/p_screen.h" |
| #include "st_atom.h" |
| #include "st_context.h" |
| #include "st_cb_bufferobjects.h" |
| #include "st_cb_fbo.h" |
| #include "st_cb_flush.h" |
| #include "st_cb_texture.h" |
| #include "st_format.h" |
| #include "st_texture.h" |
| #include "st_util.h" |
| #include "st_manager.h" |
| |
| #include "util/format/u_format.h" |
| #include "util/u_inlines.h" |
| #include "util/u_surface.h" |
| |
| |
| static GLboolean |
| st_renderbuffer_alloc_sw_storage(struct gl_context * ctx, |
| struct gl_renderbuffer *rb, |
| GLenum internalFormat, |
| GLuint width, GLuint height) |
| { |
| struct st_context *st = st_context(ctx); |
| struct st_renderbuffer *strb = st_renderbuffer(rb); |
| enum pipe_format format; |
| size_t size; |
| |
| free(strb->data); |
| strb->data = NULL; |
| |
| if (internalFormat == GL_RGBA16_SNORM) { |
| /* Special case for software accum buffers. Otherwise, if the |
| * call to st_choose_renderbuffer_format() fails (because the |
| * driver doesn't support signed 16-bit/channel colors) we'd |
| * just return without allocating the software accum buffer. |
| */ |
| format = PIPE_FORMAT_R16G16B16A16_SNORM; |
| } |
| else { |
| format = st_choose_renderbuffer_format(st, internalFormat, 0, 0); |
| |
| /* Not setting gl_renderbuffer::Format here will cause |
| * FRAMEBUFFER_UNSUPPORTED and ValidateFramebuffer will not be called. |
| */ |
| if (format == PIPE_FORMAT_NONE) { |
| return GL_TRUE; |
| } |
| } |
| |
| strb->Base.Format = st_pipe_format_to_mesa_format(format); |
| |
| size = _mesa_format_image_size(strb->Base.Format, width, height, 1); |
| strb->data = malloc(size); |
| return strb->data != NULL; |
| } |
| |
| |
| /** |
| * gl_renderbuffer::AllocStorage() |
| * This is called to allocate the original drawing surface, and |
| * during window resize. |
| */ |
| static GLboolean |
| st_renderbuffer_alloc_storage(struct gl_context * ctx, |
| struct gl_renderbuffer *rb, |
| GLenum internalFormat, |
| GLuint width, GLuint height) |
| { |
| struct st_context *st = st_context(ctx); |
| struct pipe_screen *screen = st->pipe->screen; |
| struct st_renderbuffer *strb = st_renderbuffer(rb); |
| enum pipe_format format = PIPE_FORMAT_NONE; |
| struct pipe_resource templ; |
| |
| /* init renderbuffer fields */ |
| strb->Base.Width = width; |
| strb->Base.Height = height; |
| strb->Base._BaseFormat = _mesa_base_fbo_format(ctx, internalFormat); |
| strb->defined = GL_FALSE; /* undefined contents now */ |
| |
| if (strb->software) { |
| return st_renderbuffer_alloc_sw_storage(ctx, rb, internalFormat, |
| width, height); |
| } |
| |
| /* Free the old surface and texture |
| */ |
| pipe_surface_reference(&strb->surface_srgb, NULL); |
| pipe_surface_reference(&strb->surface_linear, NULL); |
| strb->surface = NULL; |
| pipe_resource_reference(&strb->texture, NULL); |
| |
| /* If an sRGB framebuffer is unsupported, sRGB formats behave like linear |
| * formats. |
| */ |
| if (!ctx->Extensions.EXT_sRGB) { |
| internalFormat = _mesa_get_linear_internalformat(internalFormat); |
| } |
| |
| /* Handle multisample renderbuffers first. |
| * |
| * From ARB_framebuffer_object: |
| * If <samples> is zero, then RENDERBUFFER_SAMPLES is set to zero. |
| * Otherwise <samples> represents a request for a desired minimum |
| * number of samples. Since different implementations may support |
| * different sample counts for multisampled rendering, the actual |
| * number of samples allocated for the renderbuffer image is |
| * implementation dependent. However, the resulting value for |
| * RENDERBUFFER_SAMPLES is guaranteed to be greater than or equal |
| * to <samples> and no more than the next larger sample count supported |
| * by the implementation. |
| * |
| * Find the supported number of samples >= rb->NumSamples |
| */ |
| if (rb->NumSamples > 0) { |
| unsigned start, start_storage; |
| |
| if (ctx->Const.MaxSamples > 1 && rb->NumSamples == 1) { |
| /* don't try num_samples = 1 with drivers that support real msaa */ |
| start = 2; |
| start_storage = 2; |
| } else { |
| start = rb->NumSamples; |
| start_storage = rb->NumStorageSamples; |
| } |
| |
| if (ctx->Extensions.AMD_framebuffer_multisample_advanced) { |
| if (rb->_BaseFormat == GL_DEPTH_COMPONENT || |
| rb->_BaseFormat == GL_DEPTH_STENCIL || |
| rb->_BaseFormat == GL_STENCIL_INDEX) { |
| /* Find a supported depth-stencil format. */ |
| for (unsigned samples = start; |
| samples <= ctx->Const.MaxDepthStencilFramebufferSamples; |
| samples++) { |
| format = st_choose_renderbuffer_format(st, internalFormat, |
| samples, samples); |
| |
| if (format != PIPE_FORMAT_NONE) { |
| rb->NumSamples = samples; |
| rb->NumStorageSamples = samples; |
| break; |
| } |
| } |
| } else { |
| /* Find a supported color format, samples >= storage_samples. */ |
| for (unsigned storage_samples = start_storage; |
| storage_samples <= ctx->Const.MaxColorFramebufferStorageSamples; |
| storage_samples++) { |
| for (unsigned samples = MAX2(start, storage_samples); |
| samples <= ctx->Const.MaxColorFramebufferSamples; |
| samples++) { |
| format = st_choose_renderbuffer_format(st, internalFormat, |
| samples, |
| storage_samples); |
| |
| if (format != PIPE_FORMAT_NONE) { |
| rb->NumSamples = samples; |
| rb->NumStorageSamples = storage_samples; |
| goto found; |
| } |
| } |
| } |
| found:; |
| } |
| } else { |
| for (unsigned samples = start; samples <= ctx->Const.MaxSamples; |
| samples++) { |
| format = st_choose_renderbuffer_format(st, internalFormat, |
| samples, samples); |
| |
| if (format != PIPE_FORMAT_NONE) { |
| rb->NumSamples = samples; |
| rb->NumStorageSamples = samples; |
| break; |
| } |
| } |
| } |
| } else { |
| format = st_choose_renderbuffer_format(st, internalFormat, 0, 0); |
| } |
| |
| /* Not setting gl_renderbuffer::Format here will cause |
| * FRAMEBUFFER_UNSUPPORTED and ValidateFramebuffer will not be called. |
| */ |
| if (format == PIPE_FORMAT_NONE) { |
| return GL_TRUE; |
| } |
| |
| strb->Base.Format = st_pipe_format_to_mesa_format(format); |
| |
| if (width == 0 || height == 0) { |
| /* if size is zero, nothing to allocate */ |
| return GL_TRUE; |
| } |
| |
| /* Setup new texture template. |
| */ |
| memset(&templ, 0, sizeof(templ)); |
| templ.target = st->internal_target; |
| templ.format = format; |
| templ.width0 = width; |
| templ.height0 = height; |
| templ.depth0 = 1; |
| templ.array_size = 1; |
| templ.nr_samples = rb->NumSamples; |
| templ.nr_storage_samples = rb->NumStorageSamples; |
| |
| if (util_format_is_depth_or_stencil(format)) { |
| templ.bind = PIPE_BIND_DEPTH_STENCIL; |
| } |
| else if (strb->Base.Name != 0) { |
| /* this is a user-created renderbuffer */ |
| templ.bind = PIPE_BIND_RENDER_TARGET; |
| } |
| else { |
| /* this is a window-system buffer */ |
| templ.bind = (PIPE_BIND_DISPLAY_TARGET | |
| PIPE_BIND_RENDER_TARGET); |
| } |
| |
| strb->texture = screen->resource_create(screen, &templ); |
| |
| if (!strb->texture) |
| return FALSE; |
| |
| st_update_renderbuffer_surface(st, strb); |
| return strb->surface != NULL; |
| } |
| |
| |
| /** |
| * gl_renderbuffer::Delete() |
| */ |
| static void |
| st_renderbuffer_delete(struct gl_context *ctx, struct gl_renderbuffer *rb) |
| { |
| struct st_renderbuffer *strb = st_renderbuffer(rb); |
| if (ctx) { |
| struct st_context *st = st_context(ctx); |
| pipe_surface_release(st->pipe, &strb->surface_srgb); |
| pipe_surface_release(st->pipe, &strb->surface_linear); |
| } else { |
| pipe_surface_release_no_context(&strb->surface_srgb); |
| pipe_surface_release_no_context(&strb->surface_linear); |
| } |
| strb->surface = NULL; |
| pipe_resource_reference(&strb->texture, NULL); |
| free(strb->data); |
| _mesa_delete_renderbuffer(ctx, rb); |
| } |
| |
| |
| /** |
| * Called via ctx->Driver.NewRenderbuffer() |
| */ |
| static struct gl_renderbuffer * |
| st_new_renderbuffer(struct gl_context *ctx, GLuint name) |
| { |
| struct st_renderbuffer *strb = ST_CALLOC_STRUCT(st_renderbuffer); |
| if (strb) { |
| assert(name != 0); |
| _mesa_init_renderbuffer(&strb->Base, name); |
| strb->Base.Delete = st_renderbuffer_delete; |
| strb->Base.AllocStorage = st_renderbuffer_alloc_storage; |
| return &strb->Base; |
| } |
| return NULL; |
| } |
| |
| |
| /** |
| * Allocate a renderbuffer for an on-screen window (not a user-created |
| * renderbuffer). The window system code determines the format. |
| */ |
| struct gl_renderbuffer * |
| st_new_renderbuffer_fb(enum pipe_format format, unsigned samples, boolean sw) |
| { |
| struct st_renderbuffer *strb; |
| |
| strb = ST_CALLOC_STRUCT(st_renderbuffer); |
| if (!strb) { |
| _mesa_error(NULL, GL_OUT_OF_MEMORY, "creating renderbuffer"); |
| return NULL; |
| } |
| |
| _mesa_init_renderbuffer(&strb->Base, 0); |
| strb->Base.ClassID = 0x4242; /* just a unique value */ |
| strb->Base.NumSamples = samples; |
| strb->Base.NumStorageSamples = samples; |
| strb->Base.Format = st_pipe_format_to_mesa_format(format); |
| strb->Base._BaseFormat = _mesa_get_format_base_format(strb->Base.Format); |
| strb->software = sw; |
| |
| switch (format) { |
| case PIPE_FORMAT_B10G10R10A2_UNORM: |
| case PIPE_FORMAT_R10G10B10A2_UNORM: |
| strb->Base.InternalFormat = GL_RGB10_A2; |
| break; |
| case PIPE_FORMAT_R10G10B10X2_UNORM: |
| case PIPE_FORMAT_B10G10R10X2_UNORM: |
| strb->Base.InternalFormat = GL_RGB10; |
| break; |
| case PIPE_FORMAT_R8G8B8A8_UNORM: |
| case PIPE_FORMAT_B8G8R8A8_UNORM: |
| case PIPE_FORMAT_A8R8G8B8_UNORM: |
| strb->Base.InternalFormat = GL_RGBA8; |
| break; |
| case PIPE_FORMAT_R8G8B8X8_UNORM: |
| case PIPE_FORMAT_B8G8R8X8_UNORM: |
| case PIPE_FORMAT_X8R8G8B8_UNORM: |
| case PIPE_FORMAT_R8G8B8_UNORM: |
| strb->Base.InternalFormat = GL_RGB8; |
| break; |
| case PIPE_FORMAT_R8G8B8A8_SRGB: |
| case PIPE_FORMAT_B8G8R8A8_SRGB: |
| case PIPE_FORMAT_A8R8G8B8_SRGB: |
| strb->Base.InternalFormat = GL_SRGB8_ALPHA8; |
| break; |
| case PIPE_FORMAT_R8G8B8X8_SRGB: |
| case PIPE_FORMAT_B8G8R8X8_SRGB: |
| case PIPE_FORMAT_X8R8G8B8_SRGB: |
| strb->Base.InternalFormat = GL_SRGB8; |
| break; |
| case PIPE_FORMAT_B5G5R5A1_UNORM: |
| strb->Base.InternalFormat = GL_RGB5_A1; |
| break; |
| case PIPE_FORMAT_B4G4R4A4_UNORM: |
| strb->Base.InternalFormat = GL_RGBA4; |
| break; |
| case PIPE_FORMAT_B5G6R5_UNORM: |
| strb->Base.InternalFormat = GL_RGB565; |
| break; |
| case PIPE_FORMAT_Z16_UNORM: |
| strb->Base.InternalFormat = GL_DEPTH_COMPONENT16; |
| break; |
| case PIPE_FORMAT_Z32_UNORM: |
| strb->Base.InternalFormat = GL_DEPTH_COMPONENT32; |
| break; |
| case PIPE_FORMAT_Z24_UNORM_S8_UINT: |
| case PIPE_FORMAT_S8_UINT_Z24_UNORM: |
| strb->Base.InternalFormat = GL_DEPTH24_STENCIL8_EXT; |
| break; |
| case PIPE_FORMAT_Z24X8_UNORM: |
| case PIPE_FORMAT_X8Z24_UNORM: |
| strb->Base.InternalFormat = GL_DEPTH_COMPONENT24; |
| break; |
| case PIPE_FORMAT_S8_UINT: |
| strb->Base.InternalFormat = GL_STENCIL_INDEX8_EXT; |
| break; |
| case PIPE_FORMAT_R16G16B16A16_SNORM: |
| /* accum buffer */ |
| strb->Base.InternalFormat = GL_RGBA16_SNORM; |
| break; |
| case PIPE_FORMAT_R16G16B16A16_UNORM: |
| strb->Base.InternalFormat = GL_RGBA16; |
| break; |
| case PIPE_FORMAT_R16G16B16_UNORM: |
| strb->Base.InternalFormat = GL_RGB16; |
| break; |
| case PIPE_FORMAT_R8_UNORM: |
| strb->Base.InternalFormat = GL_R8; |
| break; |
| case PIPE_FORMAT_R8G8_UNORM: |
| strb->Base.InternalFormat = GL_RG8; |
| break; |
| case PIPE_FORMAT_R16_UNORM: |
| strb->Base.InternalFormat = GL_R16; |
| break; |
| case PIPE_FORMAT_R16G16_UNORM: |
| strb->Base.InternalFormat = GL_RG16; |
| break; |
| case PIPE_FORMAT_R32G32B32A32_FLOAT: |
| strb->Base.InternalFormat = GL_RGBA32F; |
| break; |
| case PIPE_FORMAT_R32G32B32X32_FLOAT: |
| case PIPE_FORMAT_R32G32B32_FLOAT: |
| strb->Base.InternalFormat = GL_RGB32F; |
| break; |
| case PIPE_FORMAT_R16G16B16A16_FLOAT: |
| strb->Base.InternalFormat = GL_RGBA16F; |
| break; |
| case PIPE_FORMAT_R16G16B16X16_FLOAT: |
| strb->Base.InternalFormat = GL_RGB16F; |
| break; |
| default: |
| _mesa_problem(NULL, |
| "Unexpected format %s in st_new_renderbuffer_fb", |
| util_format_name(format)); |
| free(strb); |
| return NULL; |
| } |
| |
| /* st-specific methods */ |
| strb->Base.Delete = st_renderbuffer_delete; |
| strb->Base.AllocStorage = st_renderbuffer_alloc_storage; |
| |
| /* surface is allocated in st_renderbuffer_alloc_storage() */ |
| strb->surface = NULL; |
| |
| return &strb->Base; |
| } |
| |
| |
| /** |
| * Create or update the pipe_surface of a FBO renderbuffer. |
| * This is usually called after st_finalize_texture. |
| */ |
| void |
| st_update_renderbuffer_surface(struct st_context *st, |
| struct st_renderbuffer *strb) |
| { |
| struct pipe_context *pipe = st->pipe; |
| struct pipe_resource *resource = strb->texture; |
| const struct st_texture_object *stTexObj = NULL; |
| unsigned rtt_width = strb->Base.Width; |
| unsigned rtt_height = strb->Base.Height; |
| unsigned rtt_depth = strb->Base.Depth; |
| |
| /* |
| * For winsys fbo, it is possible that the renderbuffer is sRGB-capable but |
| * the format of strb->texture is linear (because we have no control over |
| * the format). Check strb->Base.Format instead of strb->texture->format |
| * to determine if the rb is sRGB-capable. |
| */ |
| boolean enable_srgb = st->ctx->Color.sRGBEnabled && |
| _mesa_is_format_srgb(strb->Base.Format); |
| enum pipe_format format = resource->format; |
| |
| if (strb->is_rtt) { |
| stTexObj = st_texture_object(strb->Base.TexImage->TexObject); |
| if (stTexObj->surface_based) |
| format = stTexObj->surface_format; |
| } |
| |
| format = enable_srgb ? util_format_srgb(format) : util_format_linear(format); |
| |
| if (resource->target == PIPE_TEXTURE_1D_ARRAY) { |
| rtt_depth = rtt_height; |
| rtt_height = 1; |
| } |
| |
| /* find matching mipmap level size */ |
| unsigned level; |
| for (level = 0; level <= resource->last_level; level++) { |
| if (u_minify(resource->width0, level) == rtt_width && |
| u_minify(resource->height0, level) == rtt_height && |
| (resource->target != PIPE_TEXTURE_3D || |
| u_minify(resource->depth0, level) == rtt_depth)) { |
| break; |
| } |
| } |
| assert(level <= resource->last_level); |
| |
| /* determine the layer bounds */ |
| unsigned first_layer, last_layer; |
| if (strb->rtt_layered) { |
| first_layer = 0; |
| last_layer = util_max_layer(strb->texture, level); |
| } |
| else { |
| first_layer = |
| last_layer = strb->rtt_face + strb->rtt_slice; |
| } |
| |
| /* Adjust for texture views */ |
| if (strb->is_rtt && resource->array_size > 1 && |
| stTexObj->base.Immutable) { |
| const struct gl_texture_object *tex = &stTexObj->base; |
| first_layer += tex->MinLayer; |
| if (!strb->rtt_layered) |
| last_layer += tex->MinLayer; |
| else |
| last_layer = MIN2(first_layer + tex->NumLayers - 1, last_layer); |
| } |
| |
| struct pipe_surface **psurf = |
| enable_srgb ? &strb->surface_srgb : &strb->surface_linear; |
| struct pipe_surface *surf = *psurf; |
| |
| if (!surf || |
| surf->texture->nr_samples != strb->Base.NumSamples || |
| surf->texture->nr_storage_samples != strb->Base.NumStorageSamples || |
| surf->format != format || |
| surf->texture != resource || |
| surf->width != rtt_width || |
| surf->height != rtt_height || |
| surf->nr_samples != strb->rtt_nr_samples || |
| surf->u.tex.level != level || |
| surf->u.tex.first_layer != first_layer || |
| surf->u.tex.last_layer != last_layer) { |
| /* create a new pipe_surface */ |
| struct pipe_surface surf_tmpl; |
| memset(&surf_tmpl, 0, sizeof(surf_tmpl)); |
| surf_tmpl.format = format; |
| surf_tmpl.nr_samples = strb->rtt_nr_samples; |
| surf_tmpl.u.tex.level = level; |
| surf_tmpl.u.tex.first_layer = first_layer; |
| surf_tmpl.u.tex.last_layer = last_layer; |
| |
| pipe_surface_release(pipe, psurf); |
| |
| *psurf = pipe->create_surface(pipe, resource, &surf_tmpl); |
| } |
| strb->surface = *psurf; |
| } |
| |
| |
| /** |
| * Return the pipe_resource which stores a particular texture image. |
| */ |
| static struct pipe_resource * |
| get_teximage_resource(struct gl_texture_object *texObj, |
| unsigned face, unsigned level) |
| { |
| struct st_texture_image *stImg = |
| st_texture_image(texObj->Image[face][level]); |
| |
| return stImg->pt; |
| } |
| |
| |
| /** |
| * Called by ctx->Driver.RenderTexture |
| */ |
| static void |
| st_render_texture(struct gl_context *ctx, |
| struct gl_framebuffer *fb, |
| struct gl_renderbuffer_attachment *att) |
| { |
| struct st_context *st = st_context(ctx); |
| struct gl_renderbuffer *rb = att->Renderbuffer; |
| struct st_renderbuffer *strb = st_renderbuffer(rb); |
| struct pipe_resource *pt; |
| |
| pt = get_teximage_resource(att->Texture, |
| att->CubeMapFace, |
| att->TextureLevel); |
| assert(pt); |
| |
| /* point renderbuffer at texobject */ |
| strb->is_rtt = TRUE; |
| strb->rtt_face = att->CubeMapFace; |
| strb->rtt_slice = att->Zoffset; |
| strb->rtt_layered = att->Layered; |
| strb->rtt_nr_samples = att->NumSamples; |
| pipe_resource_reference(&strb->texture, pt); |
| |
| st_update_renderbuffer_surface(st, strb); |
| |
| /* Invalidate buffer state so that the pipe's framebuffer state |
| * gets updated. |
| * That's where the new renderbuffer (which we just created) gets |
| * passed to the pipe as a (color/depth) render target. |
| */ |
| st_invalidate_buffers(st); |
| |
| |
| /* Need to trigger a call to update_framebuffer() since we just |
| * attached a new renderbuffer. |
| */ |
| ctx->NewState |= _NEW_BUFFERS; |
| } |
| |
| |
| /** |
| * Called via ctx->Driver.FinishRenderTexture. |
| */ |
| static void |
| st_finish_render_texture(struct gl_context *ctx, struct gl_renderbuffer *rb) |
| { |
| struct st_context *st = st_context(ctx); |
| struct st_renderbuffer *strb = st_renderbuffer(rb); |
| |
| if (!strb) |
| return; |
| |
| strb->is_rtt = FALSE; |
| |
| /* restore previous framebuffer state */ |
| st_invalidate_buffers(st); |
| } |
| |
| |
| /** Debug helper */ |
| static void |
| st_fbo_invalid(const char *reason) |
| { |
| if (MESA_DEBUG_FLAGS & DEBUG_INCOMPLETE_FBO) { |
| _mesa_debug(NULL, "Invalid FBO: %s\n", reason); |
| } |
| } |
| |
| |
| /** |
| * Validate a renderbuffer attachment for a particular set of bindings. |
| */ |
| static GLboolean |
| st_validate_attachment(struct gl_context *ctx, |
| struct pipe_screen *screen, |
| const struct gl_renderbuffer_attachment *att, |
| unsigned bindings) |
| { |
| const struct st_texture_object *stObj = st_texture_object(att->Texture); |
| enum pipe_format format; |
| mesa_format texFormat; |
| GLboolean valid; |
| |
| /* Sanity check: we must be binding the surface as a (color) render target |
| * or depth/stencil target. |
| */ |
| assert(bindings == PIPE_BIND_RENDER_TARGET || |
| bindings == PIPE_BIND_DEPTH_STENCIL); |
| |
| /* Only validate texture attachments for now, since |
| * st_renderbuffer_alloc_storage makes sure that |
| * the format is supported. |
| */ |
| if (att->Type != GL_TEXTURE) |
| return GL_TRUE; |
| |
| if (!stObj || !stObj->pt) |
| return GL_FALSE; |
| |
| format = stObj->pt->format; |
| texFormat = att->Renderbuffer->TexImage->TexFormat; |
| |
| /* If the encoding is sRGB and sRGB rendering cannot be enabled, |
| * check for linear format support instead. |
| * Later when we create a surface, we change the format to a linear one. */ |
| if (!ctx->Extensions.EXT_sRGB && _mesa_is_format_srgb(texFormat)) { |
| const mesa_format linearFormat = _mesa_get_srgb_format_linear(texFormat); |
| format = st_mesa_format_to_pipe_format(st_context(ctx), linearFormat); |
| } |
| |
| valid = screen->is_format_supported(screen, format, |
| PIPE_TEXTURE_2D, |
| stObj->pt->nr_samples, |
| stObj->pt->nr_storage_samples, |
| bindings); |
| if (!valid) { |
| st_fbo_invalid("Invalid format"); |
| } |
| |
| return valid; |
| } |
| |
| |
| /** |
| * Check that the framebuffer configuration is valid in terms of what |
| * the driver can support. |
| * |
| * For Gallium we only supports combined Z+stencil, not separate buffers. |
| */ |
| static void |
| st_validate_framebuffer(struct gl_context *ctx, struct gl_framebuffer *fb) |
| { |
| struct st_context *st = st_context(ctx); |
| struct pipe_screen *screen = st->pipe->screen; |
| const struct gl_renderbuffer_attachment *depth = |
| &fb->Attachment[BUFFER_DEPTH]; |
| const struct gl_renderbuffer_attachment *stencil = |
| &fb->Attachment[BUFFER_STENCIL]; |
| GLuint i; |
| enum pipe_format first_format = PIPE_FORMAT_NONE; |
| boolean mixed_formats = |
| screen->get_param(screen, PIPE_CAP_MIXED_COLORBUFFER_FORMATS) != 0; |
| |
| if (depth->Type && stencil->Type && depth->Type != stencil->Type) { |
| st_fbo_invalid("Different Depth/Stencil buffer formats"); |
| fb->_Status = GL_FRAMEBUFFER_UNSUPPORTED_EXT; |
| return; |
| } |
| if (depth->Type == GL_RENDERBUFFER_EXT && |
| stencil->Type == GL_RENDERBUFFER_EXT && |
| depth->Renderbuffer != stencil->Renderbuffer) { |
| st_fbo_invalid("Separate Depth/Stencil buffers"); |
| fb->_Status = GL_FRAMEBUFFER_UNSUPPORTED_EXT; |
| return; |
| } |
| if (depth->Type == GL_TEXTURE && |
| stencil->Type == GL_TEXTURE && |
| depth->Texture != stencil->Texture) { |
| fb->_Status = GL_FRAMEBUFFER_UNSUPPORTED_EXT; |
| st_fbo_invalid("Different Depth/Stencil textures"); |
| return; |
| } |
| |
| if (!st_validate_attachment(ctx, screen, depth, PIPE_BIND_DEPTH_STENCIL)) { |
| fb->_Status = GL_FRAMEBUFFER_UNSUPPORTED_EXT; |
| st_fbo_invalid("Invalid depth attachment"); |
| return; |
| } |
| if (!st_validate_attachment(ctx, screen, stencil, PIPE_BIND_DEPTH_STENCIL)) { |
| fb->_Status = GL_FRAMEBUFFER_UNSUPPORTED_EXT; |
| st_fbo_invalid("Invalid stencil attachment"); |
| return; |
| } |
| for (i = 0; i < ctx->Const.MaxColorAttachments; i++) { |
| struct gl_renderbuffer_attachment *att = |
| &fb->Attachment[BUFFER_COLOR0 + i]; |
| enum pipe_format format; |
| |
| if (!st_validate_attachment(ctx, screen, att, PIPE_BIND_RENDER_TARGET)) { |
| fb->_Status = GL_FRAMEBUFFER_UNSUPPORTED_EXT; |
| st_fbo_invalid("Invalid color attachment"); |
| return; |
| } |
| |
| if (!mixed_formats) { |
| /* Disallow mixed formats. */ |
| if (att->Type != GL_NONE) { |
| format = st_renderbuffer(att->Renderbuffer)->surface->format; |
| } else { |
| continue; |
| } |
| |
| if (first_format == PIPE_FORMAT_NONE) { |
| first_format = format; |
| } else if (format != first_format) { |
| fb->_Status = GL_FRAMEBUFFER_UNSUPPORTED_EXT; |
| st_fbo_invalid("Mixed color formats"); |
| return; |
| } |
| } |
| } |
| } |
| |
| |
| /** |
| * Called by ctx->Driver.DiscardFramebuffer |
| */ |
| static void |
| st_discard_framebuffer(struct gl_context *ctx, struct gl_framebuffer *fb, |
| struct gl_renderbuffer_attachment *att) |
| { |
| struct st_context *st = st_context(ctx); |
| struct pipe_resource *prsc; |
| |
| if (!att->Renderbuffer || !att->Complete) |
| return; |
| |
| prsc = st_renderbuffer(att->Renderbuffer)->surface->texture; |
| |
| /* using invalidate_resource will only work for simple 2D resources */ |
| if (prsc->depth0 != 1 || prsc->array_size != 1 || prsc->last_level != 0) |
| return; |
| |
| if (st->pipe->invalidate_resource) |
| st->pipe->invalidate_resource(st->pipe, prsc); |
| } |
| |
| |
| /** |
| * Called via glDrawBuffer. We only provide this driver function so that we |
| * can check if we need to allocate a new renderbuffer. Specifically, we |
| * don't usually allocate a front color buffer when using a double-buffered |
| * visual. But if the app calls glDrawBuffer(GL_FRONT) we need to allocate |
| * that buffer. Note, this is only for window system buffers, not user- |
| * created FBOs. |
| */ |
| static void |
| st_DrawBufferAllocate(struct gl_context *ctx) |
| { |
| struct st_context *st = st_context(ctx); |
| struct gl_framebuffer *fb = ctx->DrawBuffer; |
| |
| if (_mesa_is_winsys_fbo(fb)) { |
| GLuint i; |
| /* add the renderbuffers on demand */ |
| for (i = 0; i < fb->_NumColorDrawBuffers; i++) { |
| gl_buffer_index idx = fb->_ColorDrawBufferIndexes[i]; |
| |
| if (idx != BUFFER_NONE) { |
| st_manager_add_color_renderbuffer(st, fb, idx); |
| } |
| } |
| } |
| } |
| |
| |
| /** |
| * Called via glReadBuffer. As with st_DrawBufferAllocate, we use this |
| * function to check if we need to allocate a renderbuffer on demand. |
| */ |
| static void |
| st_ReadBuffer(struct gl_context *ctx, GLenum buffer) |
| { |
| struct st_context *st = st_context(ctx); |
| struct gl_framebuffer *fb = ctx->ReadBuffer; |
| |
| (void) buffer; |
| |
| /* Check if we need to allocate a front color buffer. |
| * Front buffers are often allocated on demand (other color buffers are |
| * always allocated in advance). |
| */ |
| if ((fb->_ColorReadBufferIndex == BUFFER_FRONT_LEFT || |
| fb->_ColorReadBufferIndex == BUFFER_FRONT_RIGHT) && |
| fb->Attachment[fb->_ColorReadBufferIndex].Type == GL_NONE) { |
| assert(_mesa_is_winsys_fbo(fb)); |
| /* add the buffer */ |
| st_manager_add_color_renderbuffer(st, fb, fb->_ColorReadBufferIndex); |
| _mesa_update_state(ctx); |
| st_validate_state(st, ST_PIPELINE_UPDATE_FRAMEBUFFER); |
| } |
| } |
| |
| |
| |
| /** |
| * Called via ctx->Driver.MapRenderbuffer. |
| */ |
| static void |
| st_MapRenderbuffer(struct gl_context *ctx, |
| struct gl_renderbuffer *rb, |
| GLuint x, GLuint y, GLuint w, GLuint h, |
| GLbitfield mode, |
| GLubyte **mapOut, GLint *rowStrideOut, |
| bool flip_y) |
| { |
| struct st_context *st = st_context(ctx); |
| struct st_renderbuffer *strb = st_renderbuffer(rb); |
| struct pipe_context *pipe = st->pipe; |
| const GLboolean invert = flip_y; |
| GLuint y2; |
| GLubyte *map; |
| |
| if (strb->software) { |
| /* software-allocated renderbuffer (probably an accum buffer) */ |
| if (strb->data) { |
| GLint bpp = _mesa_get_format_bytes(strb->Base.Format); |
| GLint stride = _mesa_format_row_stride(strb->Base.Format, |
| strb->Base.Width); |
| *mapOut = (GLubyte *) strb->data + y * stride + x * bpp; |
| *rowStrideOut = stride; |
| } |
| else { |
| *mapOut = NULL; |
| *rowStrideOut = 0; |
| } |
| return; |
| } |
| |
| /* Check for unexpected flags */ |
| assert((mode & ~(GL_MAP_READ_BIT | |
| GL_MAP_WRITE_BIT | |
| GL_MAP_INVALIDATE_RANGE_BIT)) == 0); |
| |
| const enum pipe_transfer_usage transfer_flags = |
| st_access_flags_to_transfer_flags(mode, false); |
| |
| /* Note: y=0=bottom of buffer while y2=0=top of buffer. |
| * 'invert' will be true for window-system buffers and false for |
| * user-allocated renderbuffers and textures. |
| */ |
| if (invert) |
| y2 = strb->Base.Height - y - h; |
| else |
| y2 = y; |
| |
| map = pipe_transfer_map(pipe, |
| strb->texture, |
| strb->surface->u.tex.level, |
| strb->surface->u.tex.first_layer, |
| transfer_flags, x, y2, w, h, &strb->transfer); |
| if (map) { |
| if (invert) { |
| *rowStrideOut = -(int) strb->transfer->stride; |
| map += (h - 1) * strb->transfer->stride; |
| } |
| else { |
| *rowStrideOut = strb->transfer->stride; |
| } |
| *mapOut = map; |
| } |
| else { |
| *mapOut = NULL; |
| *rowStrideOut = 0; |
| } |
| } |
| |
| |
| /** |
| * Called via ctx->Driver.UnmapRenderbuffer. |
| */ |
| static void |
| st_UnmapRenderbuffer(struct gl_context *ctx, |
| struct gl_renderbuffer *rb) |
| { |
| struct st_context *st = st_context(ctx); |
| struct st_renderbuffer *strb = st_renderbuffer(rb); |
| struct pipe_context *pipe = st->pipe; |
| |
| if (strb->software) { |
| /* software-allocated renderbuffer (probably an accum buffer) */ |
| return; |
| } |
| |
| pipe_transfer_unmap(pipe, strb->transfer); |
| strb->transfer = NULL; |
| } |
| |
| |
| /** |
| * Called via ctx->Driver.EvaluateDepthValues. |
| */ |
| static void |
| st_EvaluateDepthValues(struct gl_context *ctx) |
| { |
| struct st_context *st = st_context(ctx); |
| |
| st_validate_state(st, ST_PIPELINE_UPDATE_FRAMEBUFFER); |
| |
| st->pipe->evaluate_depth_buffer(st->pipe); |
| } |
| |
| |
| void |
| st_init_fbo_functions(struct dd_function_table *functions) |
| { |
| functions->NewFramebuffer = _mesa_new_framebuffer; |
| functions->NewRenderbuffer = st_new_renderbuffer; |
| functions->FramebufferRenderbuffer = _mesa_FramebufferRenderbuffer_sw; |
| functions->RenderTexture = st_render_texture; |
| functions->FinishRenderTexture = st_finish_render_texture; |
| functions->ValidateFramebuffer = st_validate_framebuffer; |
| functions->DiscardFramebuffer = st_discard_framebuffer; |
| |
| functions->DrawBufferAllocate = st_DrawBufferAllocate; |
| functions->ReadBuffer = st_ReadBuffer; |
| |
| functions->MapRenderbuffer = st_MapRenderbuffer; |
| functions->UnmapRenderbuffer = st_UnmapRenderbuffer; |
| functions->EvaluateDepthValues = st_EvaluateDepthValues; |
| } |
