| /************************************************************************** |
| * |
| * Copyright 2006 Tungsten Graphics, Inc., Cedar Park, Texas. |
| * 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 TUNGSTEN GRAPHICS 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. |
| * |
| **************************************************************************/ |
| |
| |
| #include "main/enums.h" |
| #include "main/imports.h" |
| #include "main/macros.h" |
| #include "main/mfeatures.h" |
| #include "main/mtypes.h" |
| #include "main/fbobject.h" |
| #include "main/framebuffer.h" |
| #include "main/renderbuffer.h" |
| #include "main/context.h" |
| #include "main/teximage.h" |
| #include "main/image.h" |
| |
| #include "swrast/swrast.h" |
| #include "drivers/common/meta.h" |
| |
| #include "intel_context.h" |
| #include "intel_batchbuffer.h" |
| #include "intel_buffers.h" |
| #include "intel_blit.h" |
| #include "intel_fbo.h" |
| #include "intel_mipmap_tree.h" |
| #include "intel_regions.h" |
| #include "intel_tex.h" |
| #include "intel_span.h" |
| #ifndef I915 |
| #include "brw_context.h" |
| #endif |
| |
| #define FILE_DEBUG_FLAG DEBUG_FBO |
| |
| static struct gl_renderbuffer * |
| intel_new_renderbuffer(struct gl_context * ctx, GLuint name); |
| |
| struct intel_region* |
| intel_get_rb_region(struct gl_framebuffer *fb, GLuint attIndex) |
| { |
| struct intel_renderbuffer *irb = intel_get_renderbuffer(fb, attIndex); |
| if (irb && irb->mt) { |
| if (attIndex == BUFFER_STENCIL && irb->mt->stencil_mt) |
| return irb->mt->stencil_mt->region; |
| else |
| return irb->mt->region; |
| } else |
| return NULL; |
| } |
| |
| /** |
| * Create a new framebuffer object. |
| */ |
| static struct gl_framebuffer * |
| intel_new_framebuffer(struct gl_context * ctx, GLuint name) |
| { |
| /* Only drawable state in intel_framebuffer at this time, just use Mesa's |
| * class |
| */ |
| return _mesa_new_framebuffer(ctx, name); |
| } |
| |
| |
| /** Called by gl_renderbuffer::Delete() */ |
| static void |
| intel_delete_renderbuffer(struct gl_context *ctx, struct gl_renderbuffer *rb) |
| { |
| struct intel_renderbuffer *irb = intel_renderbuffer(rb); |
| |
| ASSERT(irb); |
| |
| intel_miptree_release(&irb->mt); |
| |
| _mesa_delete_renderbuffer(ctx, rb); |
| } |
| |
| /** |
| * \see dd_function_table::MapRenderbuffer |
| */ |
| static void |
| intel_map_renderbuffer(struct gl_context *ctx, |
| struct gl_renderbuffer *rb, |
| GLuint x, GLuint y, GLuint w, GLuint h, |
| GLbitfield mode, |
| GLubyte **out_map, |
| GLint *out_stride) |
| { |
| struct intel_context *intel = intel_context(ctx); |
| struct swrast_renderbuffer *srb = (struct swrast_renderbuffer *)rb; |
| struct intel_renderbuffer *irb = intel_renderbuffer(rb); |
| void *map; |
| int stride; |
| |
| if (srb->Buffer) { |
| /* this is a malloc'd renderbuffer (accum buffer), not an irb */ |
| GLint bpp = _mesa_get_format_bytes(rb->Format); |
| GLint rowStride = srb->RowStride; |
| *out_map = (GLubyte *) srb->Buffer + y * rowStride + x * bpp; |
| *out_stride = rowStride; |
| return; |
| } |
| |
| /* We sometimes get called with this by our intel_span.c usage. */ |
| if (!irb->mt) { |
| *out_map = NULL; |
| *out_stride = 0; |
| return; |
| } |
| |
| /* For a window-system renderbuffer, we need to flip the mapping we receive |
| * upside-down. So we need to ask for a rectangle on flipped vertically, and |
| * we then return a pointer to the bottom of it with a negative stride. |
| */ |
| if (rb->Name == 0) { |
| y = rb->Height - y - h; |
| } |
| |
| intel_miptree_map(intel, irb->mt, irb->mt_level, irb->mt_layer, |
| x, y, w, h, mode, &map, &stride); |
| |
| if (rb->Name == 0) { |
| map += (h - 1) * stride; |
| stride = -stride; |
| } |
| |
| DBG("%s: rb %d (%s) mt mapped: (%d, %d) (%dx%d) -> %p/%d\n", |
| __FUNCTION__, rb->Name, _mesa_get_format_name(rb->Format), |
| x, y, w, h, map, stride); |
| |
| *out_map = map; |
| *out_stride = stride; |
| } |
| |
| /** |
| * \see dd_function_table::UnmapRenderbuffer |
| */ |
| static void |
| intel_unmap_renderbuffer(struct gl_context *ctx, |
| struct gl_renderbuffer *rb) |
| { |
| struct intel_context *intel = intel_context(ctx); |
| struct swrast_renderbuffer *srb = (struct swrast_renderbuffer *)rb; |
| struct intel_renderbuffer *irb = intel_renderbuffer(rb); |
| |
| DBG("%s: rb %d (%s)\n", __FUNCTION__, |
| rb->Name, _mesa_get_format_name(rb->Format)); |
| |
| if (srb->Buffer) { |
| /* this is a malloc'd renderbuffer (accum buffer) */ |
| /* nothing to do */ |
| return; |
| } |
| |
| intel_miptree_unmap(intel, irb->mt, irb->mt_level, irb->mt_layer); |
| } |
| |
| |
| /** |
| * Round up the requested multisample count to the next supported sample size. |
| */ |
| unsigned |
| intel_quantize_num_samples(struct intel_screen *intel, unsigned num_samples) |
| { |
| switch (intel->gen) { |
| case 6: |
| /* Gen6 supports only 4x multisampling. */ |
| if (num_samples > 0) |
| return 4; |
| else |
| return 0; |
| case 7: |
| /* Gen7 supports 4x and 8x multisampling. */ |
| if (num_samples > 4) |
| return 8; |
| else if (num_samples > 0) |
| return 4; |
| else |
| return 0; |
| return 0; |
| default: |
| /* MSAA unsupported. However, a careful reading of |
| * EXT_framebuffer_multisample reveals that we need to permit |
| * num_samples to be 1 (since num_samples is permitted to be as high as |
| * GL_MAX_SAMPLES, and GL_MAX_SAMPLES must be at least 1). Since |
| * platforms before Gen6 don't support MSAA, this is safe, because |
| * multisampling won't happen anyhow. |
| */ |
| if (num_samples > 0) |
| return 1; |
| return 0; |
| } |
| } |
| |
| |
| /** |
| * Called via glRenderbufferStorageEXT() to set the format and allocate |
| * storage for a user-created renderbuffer. |
| */ |
| GLboolean |
| intel_alloc_renderbuffer_storage(struct gl_context * ctx, struct gl_renderbuffer *rb, |
| GLenum internalFormat, |
| GLuint width, GLuint height) |
| { |
| struct intel_context *intel = intel_context(ctx); |
| struct intel_screen *screen = intel->intelScreen; |
| struct intel_renderbuffer *irb = intel_renderbuffer(rb); |
| rb->NumSamples = intel_quantize_num_samples(screen, rb->NumSamples); |
| |
| switch (internalFormat) { |
| default: |
| /* Use the same format-choice logic as for textures. |
| * Renderbuffers aren't any different from textures for us, |
| * except they're less useful because you can't texture with |
| * them. |
| */ |
| rb->Format = intel->ctx.Driver.ChooseTextureFormat(ctx, GL_TEXTURE_2D, |
| internalFormat, |
| GL_NONE, GL_NONE); |
| break; |
| case GL_STENCIL_INDEX: |
| case GL_STENCIL_INDEX1_EXT: |
| case GL_STENCIL_INDEX4_EXT: |
| case GL_STENCIL_INDEX8_EXT: |
| case GL_STENCIL_INDEX16_EXT: |
| /* These aren't actual texture formats, so force them here. */ |
| if (intel->has_separate_stencil) { |
| rb->Format = MESA_FORMAT_S8; |
| } else { |
| assert(!intel->must_use_separate_stencil); |
| rb->Format = MESA_FORMAT_S8_Z24; |
| } |
| break; |
| } |
| |
| rb->Width = width; |
| rb->Height = height; |
| rb->_BaseFormat = _mesa_base_fbo_format(ctx, internalFormat); |
| |
| intel_miptree_release(&irb->mt); |
| |
| DBG("%s: %s: %s (%dx%d)\n", __FUNCTION__, |
| _mesa_lookup_enum_by_nr(internalFormat), |
| _mesa_get_format_name(rb->Format), width, height); |
| |
| if (width == 0 || height == 0) |
| return true; |
| |
| irb->mt = intel_miptree_create_for_renderbuffer(intel, rb->Format, |
| width, height, |
| rb->NumSamples); |
| if (!irb->mt) |
| return false; |
| |
| return true; |
| } |
| |
| |
| #if FEATURE_OES_EGL_image |
| static void |
| intel_image_target_renderbuffer_storage(struct gl_context *ctx, |
| struct gl_renderbuffer *rb, |
| void *image_handle) |
| { |
| struct intel_context *intel = intel_context(ctx); |
| struct intel_renderbuffer *irb; |
| __DRIscreen *screen; |
| __DRIimage *image; |
| |
| screen = intel->intelScreen->driScrnPriv; |
| image = screen->dri2.image->lookupEGLImage(screen, image_handle, |
| screen->loaderPrivate); |
| if (image == NULL) |
| return; |
| |
| /* __DRIimage is opaque to the core so it has to be checked here */ |
| switch (image->format) { |
| case MESA_FORMAT_RGBA8888_REV: |
| _mesa_error(&intel->ctx, GL_INVALID_OPERATION, |
| "glEGLImageTargetRenderbufferStorage(unsupported image format"); |
| return; |
| break; |
| default: |
| break; |
| } |
| |
| irb = intel_renderbuffer(rb); |
| intel_miptree_release(&irb->mt); |
| irb->mt = intel_miptree_create_for_region(intel, |
| GL_TEXTURE_2D, |
| image->format, |
| image->region); |
| if (!irb->mt) |
| return; |
| |
| rb->InternalFormat = image->internal_format; |
| rb->Width = image->region->width; |
| rb->Height = image->region->height; |
| rb->Format = image->format; |
| rb->_BaseFormat = _mesa_base_fbo_format(&intel->ctx, |
| image->internal_format); |
| } |
| #endif |
| |
| /** |
| * Called for each hardware renderbuffer when a _window_ is resized. |
| * Just update fields. |
| * Not used for user-created renderbuffers! |
| */ |
| static GLboolean |
| intel_alloc_window_storage(struct gl_context * ctx, struct gl_renderbuffer *rb, |
| GLenum internalFormat, GLuint width, GLuint height) |
| { |
| ASSERT(rb->Name == 0); |
| rb->Width = width; |
| rb->Height = height; |
| rb->InternalFormat = internalFormat; |
| |
| return true; |
| } |
| |
| |
| static void |
| intel_resize_buffers(struct gl_context *ctx, struct gl_framebuffer *fb, |
| GLuint width, GLuint height) |
| { |
| int i; |
| |
| _mesa_resize_framebuffer(ctx, fb, width, height); |
| |
| fb->Initialized = true; /* XXX remove someday */ |
| |
| if (_mesa_is_user_fbo(fb)) { |
| return; |
| } |
| |
| |
| /* Make sure all window system renderbuffers are up to date */ |
| for (i = BUFFER_FRONT_LEFT; i <= BUFFER_BACK_RIGHT; i++) { |
| struct gl_renderbuffer *rb = fb->Attachment[i].Renderbuffer; |
| |
| /* only resize if size is changing */ |
| if (rb && (rb->Width != width || rb->Height != height)) { |
| rb->AllocStorage(ctx, rb, rb->InternalFormat, width, height); |
| } |
| } |
| } |
| |
| |
| /** Dummy function for gl_renderbuffer::AllocStorage() */ |
| static GLboolean |
| intel_nop_alloc_storage(struct gl_context * ctx, struct gl_renderbuffer *rb, |
| GLenum internalFormat, GLuint width, GLuint height) |
| { |
| _mesa_problem(ctx, "intel_op_alloc_storage should never be called."); |
| return false; |
| } |
| |
| /** |
| * Create a new intel_renderbuffer which corresponds to an on-screen window, |
| * not a user-created renderbuffer. |
| * |
| * \param num_samples must be quantized. |
| */ |
| struct intel_renderbuffer * |
| intel_create_renderbuffer(gl_format format, unsigned num_samples) |
| { |
| struct intel_renderbuffer *irb; |
| struct gl_renderbuffer *rb; |
| |
| GET_CURRENT_CONTEXT(ctx); |
| |
| irb = CALLOC_STRUCT(intel_renderbuffer); |
| if (!irb) { |
| _mesa_error(ctx, GL_OUT_OF_MEMORY, "creating renderbuffer"); |
| return NULL; |
| } |
| |
| rb = &irb->Base.Base; |
| |
| _mesa_init_renderbuffer(rb, 0); |
| rb->ClassID = INTEL_RB_CLASS; |
| rb->_BaseFormat = _mesa_get_format_base_format(format); |
| rb->Format = format; |
| rb->InternalFormat = rb->_BaseFormat; |
| rb->NumSamples = num_samples; |
| |
| /* intel-specific methods */ |
| rb->Delete = intel_delete_renderbuffer; |
| rb->AllocStorage = intel_alloc_window_storage; |
| |
| return irb; |
| } |
| |
| /** |
| * Private window-system buffers (as opposed to ones shared with the display |
| * server created with intel_create_renderbuffer()) are most similar in their |
| * handling to user-created renderbuffers, but they have a resize handler that |
| * may be called at intel_update_renderbuffers() time. |
| * |
| * \param num_samples must be quantized. |
| */ |
| struct intel_renderbuffer * |
| intel_create_private_renderbuffer(gl_format format, unsigned num_samples) |
| { |
| struct intel_renderbuffer *irb; |
| |
| irb = intel_create_renderbuffer(format, num_samples); |
| irb->Base.Base.AllocStorage = intel_alloc_renderbuffer_storage; |
| |
| return irb; |
| } |
| |
| /** |
| * Create a new renderbuffer object. |
| * Typically called via glBindRenderbufferEXT(). |
| */ |
| static struct gl_renderbuffer * |
| intel_new_renderbuffer(struct gl_context * ctx, GLuint name) |
| { |
| /*struct intel_context *intel = intel_context(ctx); */ |
| struct intel_renderbuffer *irb; |
| struct gl_renderbuffer *rb; |
| |
| irb = CALLOC_STRUCT(intel_renderbuffer); |
| if (!irb) { |
| _mesa_error(ctx, GL_OUT_OF_MEMORY, "creating renderbuffer"); |
| return NULL; |
| } |
| |
| rb = &irb->Base.Base; |
| |
| _mesa_init_renderbuffer(rb, name); |
| rb->ClassID = INTEL_RB_CLASS; |
| |
| /* intel-specific methods */ |
| rb->Delete = intel_delete_renderbuffer; |
| rb->AllocStorage = intel_alloc_renderbuffer_storage; |
| /* span routines set in alloc_storage function */ |
| |
| return rb; |
| } |
| |
| |
| /** |
| * Called via glBindFramebufferEXT(). |
| */ |
| static void |
| intel_bind_framebuffer(struct gl_context * ctx, GLenum target, |
| struct gl_framebuffer *fb, struct gl_framebuffer *fbread) |
| { |
| if (target == GL_FRAMEBUFFER_EXT || target == GL_DRAW_FRAMEBUFFER_EXT) { |
| intel_draw_buffer(ctx); |
| } |
| else { |
| /* don't need to do anything if target == GL_READ_FRAMEBUFFER_EXT */ |
| } |
| } |
| |
| |
| /** |
| * Called via glFramebufferRenderbufferEXT(). |
| */ |
| static void |
| intel_framebuffer_renderbuffer(struct gl_context * ctx, |
| struct gl_framebuffer *fb, |
| GLenum attachment, struct gl_renderbuffer *rb) |
| { |
| DBG("Intel FramebufferRenderbuffer %u %u\n", fb->Name, rb ? rb->Name : 0); |
| |
| _mesa_framebuffer_renderbuffer(ctx, fb, attachment, rb); |
| intel_draw_buffer(ctx); |
| } |
| |
| /** |
| * \par Special case for separate stencil |
| * |
| * When wrapping a depthstencil texture that uses separate stencil, this |
| * function is recursively called twice: once to create \c |
| * irb->wrapped_depth and again to create \c irb->wrapped_stencil. On the |
| * call to create \c irb->wrapped_depth, the \c format and \c |
| * internal_format parameters do not match \c mt->format. In that case, \c |
| * mt->format is MESA_FORMAT_S8_Z24 and \c format is \c |
| * MESA_FORMAT_X8_Z24. |
| * |
| * @return true on success |
| */ |
| |
| static bool |
| intel_renderbuffer_update_wrapper(struct intel_context *intel, |
| struct intel_renderbuffer *irb, |
| struct gl_texture_image *image, |
| uint32_t layer) |
| { |
| struct gl_renderbuffer *rb = &irb->Base.Base; |
| struct intel_texture_image *intel_image = intel_texture_image(image); |
| struct intel_mipmap_tree *mt = intel_image->mt; |
| int level = image->Level; |
| |
| rb->Format = image->TexFormat; |
| rb->InternalFormat = image->InternalFormat; |
| rb->_BaseFormat = image->_BaseFormat; |
| rb->Width = mt->level[level].width; |
| rb->Height = mt->level[level].height; |
| |
| rb->Delete = intel_delete_renderbuffer; |
| rb->AllocStorage = intel_nop_alloc_storage; |
| |
| intel_miptree_check_level_layer(mt, level, layer); |
| irb->mt_level = level; |
| irb->mt_layer = layer; |
| |
| intel_miptree_reference(&irb->mt, mt); |
| |
| intel_renderbuffer_set_draw_offset(irb); |
| |
| if (mt->hiz_mt == NULL && |
| intel->vtbl.is_hiz_depth_format(intel, rb->Format)) { |
| intel_miptree_alloc_hiz(intel, mt, 0 /* num_samples */); |
| if (!mt->hiz_mt) |
| return false; |
| } |
| |
| return true; |
| } |
| |
| void |
| intel_renderbuffer_set_draw_offset(struct intel_renderbuffer *irb) |
| { |
| unsigned int dst_x, dst_y; |
| |
| /* compute offset of the particular 2D image within the texture region */ |
| intel_miptree_get_image_offset(irb->mt, |
| irb->mt_level, |
| 0, /* face, which we ignore */ |
| irb->mt_layer, |
| &dst_x, &dst_y); |
| |
| irb->draw_x = dst_x; |
| irb->draw_y = dst_y; |
| } |
| |
| /** |
| * Rendering to tiled buffers requires that the base address of the |
| * buffer be aligned to a page boundary. We generally render to |
| * textures by pointing the surface at the mipmap image level, which |
| * may not be aligned to a tile boundary. |
| * |
| * This function returns an appropriately-aligned base offset |
| * according to the tiling restrictions, plus any required x/y offset |
| * from there. |
| */ |
| uint32_t |
| intel_renderbuffer_tile_offsets(struct intel_renderbuffer *irb, |
| uint32_t *tile_x, |
| uint32_t *tile_y) |
| { |
| struct intel_region *region = irb->mt->region; |
| uint32_t mask_x, mask_y; |
| |
| intel_region_get_tile_masks(region, &mask_x, &mask_y, false); |
| |
| *tile_x = irb->draw_x & mask_x; |
| *tile_y = irb->draw_y & mask_y; |
| return intel_region_get_aligned_offset(region, irb->draw_x & ~mask_x, |
| irb->draw_y & ~mask_y, false); |
| } |
| |
| /** |
| * Called by glFramebufferTexture[123]DEXT() (and other places) to |
| * prepare for rendering into texture memory. This might be called |
| * many times to choose different texture levels, cube faces, etc |
| * before intel_finish_render_texture() is ever called. |
| */ |
| static void |
| intel_render_texture(struct gl_context * ctx, |
| struct gl_framebuffer *fb, |
| struct gl_renderbuffer_attachment *att) |
| { |
| struct intel_context *intel = intel_context(ctx); |
| struct gl_texture_image *image = _mesa_get_attachment_teximage(att); |
| struct intel_renderbuffer *irb = intel_renderbuffer(att->Renderbuffer); |
| struct intel_texture_image *intel_image = intel_texture_image(image); |
| struct intel_mipmap_tree *mt = intel_image->mt; |
| int layer; |
| |
| (void) fb; |
| |
| if (att->CubeMapFace > 0) { |
| assert(att->Zoffset == 0); |
| layer = att->CubeMapFace; |
| } else { |
| layer = att->Zoffset; |
| } |
| |
| if (!intel_image->mt) { |
| /* Fallback on drawing to a texture that doesn't have a miptree |
| * (has a border, width/height 0, etc.) |
| */ |
| _mesa_reference_renderbuffer(&att->Renderbuffer, NULL); |
| _swrast_render_texture(ctx, fb, att); |
| return; |
| } |
| else if (!irb) { |
| intel_miptree_check_level_layer(mt, att->TextureLevel, layer); |
| |
| irb = (struct intel_renderbuffer *)intel_new_renderbuffer(ctx, ~0); |
| |
| if (irb) { |
| /* bind the wrapper to the attachment point */ |
| _mesa_reference_renderbuffer(&att->Renderbuffer, &irb->Base.Base); |
| } |
| else { |
| /* fallback to software rendering */ |
| _swrast_render_texture(ctx, fb, att); |
| return; |
| } |
| } |
| |
| if (!intel_renderbuffer_update_wrapper(intel, irb, image, layer)) { |
| _mesa_reference_renderbuffer(&att->Renderbuffer, NULL); |
| _swrast_render_texture(ctx, fb, att); |
| return; |
| } |
| |
| irb->tex_image = image; |
| |
| DBG("Begin render %s texture tex=%u w=%d h=%d refcount=%d\n", |
| _mesa_get_format_name(image->TexFormat), |
| att->Texture->Name, image->Width, image->Height, |
| irb->Base.Base.RefCount); |
| |
| /* update drawing region, etc */ |
| intel_draw_buffer(ctx); |
| } |
| |
| |
| /** |
| * Called by Mesa when rendering to a texture is done. |
| */ |
| static void |
| intel_finish_render_texture(struct gl_context * ctx, |
| struct gl_renderbuffer_attachment *att) |
| { |
| struct intel_context *intel = intel_context(ctx); |
| struct gl_texture_object *tex_obj = att->Texture; |
| struct gl_texture_image *image = |
| tex_obj->Image[att->CubeMapFace][att->TextureLevel]; |
| struct intel_renderbuffer *irb = intel_renderbuffer(att->Renderbuffer); |
| |
| DBG("Finish render %s texture tex=%u\n", |
| _mesa_get_format_name(image->TexFormat), att->Texture->Name); |
| |
| if (irb) |
| irb->tex_image = NULL; |
| |
| /* Since we've (probably) rendered to the texture and will (likely) use |
| * it in the texture domain later on in this batchbuffer, flush the |
| * batch. Once again, we wish for a domain tracker in libdrm to cover |
| * usage inside of a batchbuffer like GEM does in the kernel. |
| */ |
| intel_batchbuffer_emit_mi_flush(intel); |
| } |
| |
| /** |
| * Do additional "completeness" testing of a framebuffer object. |
| */ |
| static void |
| intel_validate_framebuffer(struct gl_context *ctx, struct gl_framebuffer *fb) |
| { |
| struct intel_context *intel = intel_context(ctx); |
| const struct intel_renderbuffer *depthRb = |
| intel_get_renderbuffer(fb, BUFFER_DEPTH); |
| const struct intel_renderbuffer *stencilRb = |
| intel_get_renderbuffer(fb, BUFFER_STENCIL); |
| struct intel_mipmap_tree *depth_mt = NULL, *stencil_mt = NULL; |
| int i; |
| |
| DBG("%s() on fb %p (%s)\n", __FUNCTION__, |
| fb, (fb == ctx->DrawBuffer ? "drawbuffer" : |
| (fb == ctx->ReadBuffer ? "readbuffer" : "other buffer"))); |
| |
| if (depthRb) |
| depth_mt = depthRb->mt; |
| if (stencilRb) { |
| stencil_mt = stencilRb->mt; |
| if (stencil_mt->stencil_mt) |
| stencil_mt = stencil_mt->stencil_mt; |
| } |
| |
| if (depth_mt && stencil_mt) { |
| if (depth_mt == stencil_mt) { |
| /* For true packed depth/stencil (not faked on prefers-separate-stencil |
| * hardware) we need to be sure they're the same level/layer, since |
| * we'll be emitting a single packet describing the packed setup. |
| */ |
| if (depthRb->mt_level != stencilRb->mt_level || |
| depthRb->mt_layer != stencilRb->mt_layer) { |
| DBG("depth image level/layer %d/%d != stencil image %d/%d\n", |
| depthRb->mt_level, |
| depthRb->mt_layer, |
| stencilRb->mt_level, |
| stencilRb->mt_layer); |
| fb->_Status = GL_FRAMEBUFFER_UNSUPPORTED_EXT; |
| } |
| } else { |
| if (!intel->has_separate_stencil) { |
| DBG("separate stencil unsupported\n"); |
| fb->_Status = GL_FRAMEBUFFER_UNSUPPORTED_EXT; |
| } |
| if (stencil_mt->format != MESA_FORMAT_S8) { |
| DBG("separate stencil is %s instead of S8\n", |
| _mesa_get_format_name(stencil_mt->format)); |
| fb->_Status = GL_FRAMEBUFFER_UNSUPPORTED_EXT; |
| } |
| if (intel->gen < 7 && depth_mt->hiz_mt == NULL) { |
| /* Before Gen7, separate depth and stencil buffers can be used |
| * only if HiZ is enabled. From the Sandybridge PRM, Volume 2, |
| * Part 1, Bit 3DSTATE_DEPTH_BUFFER.SeparateStencilBufferEnable: |
| * [DevSNB]: This field must be set to the same value (enabled |
| * or disabled) as Hierarchical Depth Buffer Enable. |
| */ |
| DBG("separate stencil without HiZ\n"); |
| fb->_Status = GL_FRAMEBUFFER_UNSUPPORTED; |
| } |
| } |
| } |
| |
| for (i = 0; i < Elements(fb->Attachment); i++) { |
| struct gl_renderbuffer *rb; |
| struct intel_renderbuffer *irb; |
| |
| if (fb->Attachment[i].Type == GL_NONE) |
| continue; |
| |
| /* A supported attachment will have a Renderbuffer set either |
| * from being a Renderbuffer or being a texture that got the |
| * intel_wrap_texture() treatment. |
| */ |
| rb = fb->Attachment[i].Renderbuffer; |
| if (rb == NULL) { |
| DBG("attachment without renderbuffer\n"); |
| fb->_Status = GL_FRAMEBUFFER_UNSUPPORTED_EXT; |
| continue; |
| } |
| |
| if (fb->Attachment[i].Type == GL_TEXTURE) { |
| const struct gl_texture_image *img = |
| _mesa_get_attachment_teximage_const(&fb->Attachment[i]); |
| |
| if (img->Border) { |
| DBG("texture with border\n"); |
| fb->_Status = GL_FRAMEBUFFER_UNSUPPORTED_EXT; |
| continue; |
| } |
| } |
| |
| irb = intel_renderbuffer(rb); |
| if (irb == NULL) { |
| DBG("software rendering renderbuffer\n"); |
| fb->_Status = GL_FRAMEBUFFER_UNSUPPORTED_EXT; |
| continue; |
| } |
| |
| if (!intel->vtbl.render_target_supported(intel, rb)) { |
| DBG("Unsupported HW texture/renderbuffer format attached: %s\n", |
| _mesa_get_format_name(intel_rb_format(irb))); |
| fb->_Status = GL_FRAMEBUFFER_UNSUPPORTED_EXT; |
| } |
| } |
| } |
| |
| /** |
| * Try to do a glBlitFramebuffer using glCopyTexSubImage2D |
| * We can do this when the dst renderbuffer is actually a texture and |
| * there is no scaling, mirroring or scissoring. |
| * |
| * \return new buffer mask indicating the buffers left to blit using the |
| * normal path. |
| */ |
| static GLbitfield |
| intel_blit_framebuffer_copy_tex_sub_image(struct gl_context *ctx, |
| GLint srcX0, GLint srcY0, |
| GLint srcX1, GLint srcY1, |
| GLint dstX0, GLint dstY0, |
| GLint dstX1, GLint dstY1, |
| GLbitfield mask, GLenum filter) |
| { |
| if (mask & GL_COLOR_BUFFER_BIT) { |
| const struct gl_framebuffer *drawFb = ctx->DrawBuffer; |
| const struct gl_framebuffer *readFb = ctx->ReadBuffer; |
| const struct gl_renderbuffer_attachment *drawAtt = |
| &drawFb->Attachment[drawFb->_ColorDrawBufferIndexes[0]]; |
| struct intel_renderbuffer *srcRb = |
| intel_renderbuffer(readFb->_ColorReadBuffer); |
| |
| /* If the source and destination are the same size with no |
| mirroring, the rectangles are within the size of the |
| texture and there is no scissor then we can use |
| glCopyTexSubimage2D to implement the blit. This will end |
| up as a fast hardware blit on some drivers */ |
| if (srcRb && drawAtt && drawAtt->Texture && |
| srcX0 - srcX1 == dstX0 - dstX1 && |
| srcY0 - srcY1 == dstY0 - dstY1 && |
| srcX1 >= srcX0 && |
| srcY1 >= srcY0 && |
| srcX0 >= 0 && srcX1 <= readFb->Width && |
| srcY0 >= 0 && srcY1 <= readFb->Height && |
| dstX0 >= 0 && dstX1 <= drawFb->Width && |
| dstY0 >= 0 && dstY1 <= drawFb->Height && |
| !ctx->Scissor.Enabled) { |
| const struct gl_texture_object *texObj = drawAtt->Texture; |
| const GLuint dstLevel = drawAtt->TextureLevel; |
| const GLenum target = texObj->Target; |
| |
| struct gl_texture_image *texImage = |
| _mesa_select_tex_image(ctx, texObj, target, dstLevel); |
| |
| if (intel_copy_texsubimage(intel_context(ctx), |
| intel_texture_image(texImage), |
| dstX0, dstY0, |
| srcRb, |
| srcX0, srcY0, |
| srcX1 - srcX0, /* width */ |
| srcY1 - srcY0)) |
| mask &= ~GL_COLOR_BUFFER_BIT; |
| } |
| } |
| |
| return mask; |
| } |
| |
| static void |
| intel_blit_framebuffer(struct gl_context *ctx, |
| GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1, |
| GLint dstX0, GLint dstY0, GLint dstX1, GLint dstY1, |
| GLbitfield mask, GLenum filter) |
| { |
| /* Try faster, glCopyTexSubImage2D approach first which uses the BLT. */ |
| mask = intel_blit_framebuffer_copy_tex_sub_image(ctx, |
| srcX0, srcY0, srcX1, srcY1, |
| dstX0, dstY0, dstX1, dstY1, |
| mask, filter); |
| if (mask == 0x0) |
| return; |
| |
| #ifndef I915 |
| mask = brw_blorp_framebuffer(intel_context(ctx), |
| srcX0, srcY0, srcX1, srcY1, |
| dstX0, dstY0, dstX1, dstY1, |
| mask, filter); |
| if (mask == 0x0) |
| return; |
| #endif |
| |
| _mesa_meta_BlitFramebuffer(ctx, |
| srcX0, srcY0, srcX1, srcY1, |
| dstX0, dstY0, dstX1, dstY1, |
| mask, filter); |
| } |
| |
| /** |
| * This is a no-op except on multisample buffers shared with DRI2. |
| */ |
| void |
| intel_renderbuffer_set_needs_downsample(struct intel_renderbuffer *irb) |
| { |
| if (irb->mt && irb->mt->singlesample_mt) |
| irb->mt->need_downsample = true; |
| } |
| |
| void |
| intel_renderbuffer_set_needs_hiz_resolve(struct intel_renderbuffer *irb) |
| { |
| if (irb->mt) { |
| intel_miptree_slice_set_needs_hiz_resolve(irb->mt, |
| irb->mt_level, |
| irb->mt_layer); |
| } |
| } |
| |
| void |
| intel_renderbuffer_set_needs_depth_resolve(struct intel_renderbuffer *irb) |
| { |
| if (irb->mt) { |
| intel_miptree_slice_set_needs_depth_resolve(irb->mt, |
| irb->mt_level, |
| irb->mt_layer); |
| } |
| } |
| |
| bool |
| intel_renderbuffer_resolve_hiz(struct intel_context *intel, |
| struct intel_renderbuffer *irb) |
| { |
| if (irb->mt) |
| return intel_miptree_slice_resolve_hiz(intel, |
| irb->mt, |
| irb->mt_level, |
| irb->mt_layer); |
| |
| return false; |
| } |
| |
| bool |
| intel_renderbuffer_resolve_depth(struct intel_context *intel, |
| struct intel_renderbuffer *irb) |
| { |
| if (irb->mt) |
| return intel_miptree_slice_resolve_depth(intel, |
| irb->mt, |
| irb->mt_level, |
| irb->mt_layer); |
| |
| return false; |
| } |
| |
| /** |
| * Do one-time context initializations related to GL_EXT_framebuffer_object. |
| * Hook in device driver functions. |
| */ |
| void |
| intel_fbo_init(struct intel_context *intel) |
| { |
| intel->ctx.Driver.NewFramebuffer = intel_new_framebuffer; |
| intel->ctx.Driver.NewRenderbuffer = intel_new_renderbuffer; |
| intel->ctx.Driver.MapRenderbuffer = intel_map_renderbuffer; |
| intel->ctx.Driver.UnmapRenderbuffer = intel_unmap_renderbuffer; |
| intel->ctx.Driver.BindFramebuffer = intel_bind_framebuffer; |
| intel->ctx.Driver.FramebufferRenderbuffer = intel_framebuffer_renderbuffer; |
| intel->ctx.Driver.RenderTexture = intel_render_texture; |
| intel->ctx.Driver.FinishRenderTexture = intel_finish_render_texture; |
| intel->ctx.Driver.ResizeBuffers = intel_resize_buffers; |
| intel->ctx.Driver.ValidateFramebuffer = intel_validate_framebuffer; |
| intel->ctx.Driver.BlitFramebuffer = intel_blit_framebuffer; |
| |
| #if FEATURE_OES_EGL_image |
| intel->ctx.Driver.EGLImageTargetRenderbufferStorage = |
| intel_image_target_renderbuffer_storage; |
| #endif |
| } |
