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Unified Diff: cc/resources/resource_provider.cc

Issue 2885533002: cc: Allocate resources on worker context.
Patch Set: rebase Created 3 years, 6 months ago
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Index: cc/resources/resource_provider.cc
diff --git a/cc/resources/resource_provider.cc b/cc/resources/resource_provider.cc
index 09ed3ee0b42df09a21c830303d424de8ba786ffc..fb1dd19f0510f877e858a3ffbc15331b854f498e 100644
--- a/cc/resources/resource_provider.cc
+++ b/cc/resources/resource_provider.cc
@@ -135,23 +135,6 @@ bool IsFormatSupportedForStorage(ResourceFormat format, bool use_bgra) {
return false;
}
-GrPixelConfig ToGrPixelConfig(ResourceFormat format) {
- switch (format) {
- case RGBA_8888:
- return kRGBA_8888_GrPixelConfig;
- case BGRA_8888:
- return kBGRA_8888_GrPixelConfig;
- case RGBA_4444:
- return kRGBA_4444_GrPixelConfig;
- case RGBA_F16:
- return kRGBA_half_GrPixelConfig;
- default:
- break;
- }
- DCHECK(false) << "Unsupported resource format.";
- return kSkia8888_GrPixelConfig;
-}
-
class ScopedSetActiveTexture {
public:
ScopedSetActiveTexture(GLES2Interface* gl, GLenum unit)
@@ -928,7 +911,6 @@ void ResourceProvider::CopyToResource(ResourceId id,
gpu::SyncToken sync_token;
gl->GenUnverifiedSyncTokenCHROMIUM(fence_sync, sync_token.GetData());
lock.set_sync_token(sync_token);
- lock.set_synchronized(true);
}
}
@@ -1002,8 +984,8 @@ ResourceProvider::Resource* ResourceProvider::GetResource(ResourceId id) {
const ResourceProvider::Resource* ResourceProvider::LockForRead(ResourceId id) {
Resource* resource = GetResource(id);
- DCHECK(!resource->locked_for_write) << "locked for write: "
- << resource->locked_for_write;
+ DCHECK(!resource->locked_for_write)
+ << "locked for write: " << resource->locked_for_write;
DCHECK_EQ(resource->exported_count, 0);
// Uninitialized! Call SetPixels or LockForWrite first.
DCHECK(resource->allocated);
@@ -1164,101 +1146,99 @@ ResourceProvider::ScopedSamplerGL::~ScopedSamplerGL() {}
ResourceProvider::ScopedWriteLockGL::ScopedWriteLockGL(
ResourceProvider* resource_provider,
ResourceId resource_id,
- bool create_mailbox)
+ bool async_worker_context_enabled)
: resource_provider_(resource_provider),
resource_id_(resource_id),
- has_sync_token_(false),
- synchronized_(false) {
+ async_worker_context_enabled_(async_worker_context_enabled) {
DCHECK(thread_checker_.CalledOnValidThread());
+
Resource* resource = resource_provider->LockForWrite(resource_id);
- resource_provider_->LazyAllocate(resource);
- if (resource->image_id && resource->dirty_image)
- resource_provider_->BindImageForSampling(resource);
- if (create_mailbox) {
- resource_provider_->CreateMailboxAndBindResource(
- resource_provider_->ContextGL(), resource);
+ DCHECK(IsGpuResourceType(resource->type));
+
+ if (async_worker_context_enabled) {
+ resource_provider->LazyCreateMailbox(resource);
+ } else {
+ resource_provider->LazyAllocate(resource);
+ if (resource->image_id && resource->dirty_image)
+ resource_provider_->BindImageForSampling(resource);
}
+
+ type_ = resource->type;
texture_id_ = resource->gl_id;
+ gpu_memory_buffer_ = std::move(resource->gpu_memory_buffer);
+ usage_ = resource->usage;
+ image_id_ = resource->image_id;
+ bound_image_id_ = resource->bound_image_id;
+ dirty_image_ = resource->dirty_image;
target_ = resource->target;
format_ = resource->format;
size_ = resource->size;
- mailbox_ = resource->mailbox();
- color_space_ = resource_provider->GetResourceColorSpaceForRaster(resource);
+ color_space_ = resource->color_space;
+ color_space_for_raster_ =
+ resource_provider->GetResourceColorSpaceForRaster(resource);
+ hint_ = resource->hint;
+ allocated_ = resource->allocated;
+ mailbox_ = resource->mailbox().mailbox();
+ set_sync_token_ = false;
}
ResourceProvider::ScopedWriteLockGL::~ScopedWriteLockGL() {
DCHECK(thread_checker_.CalledOnValidThread());
Resource* resource = resource_provider_->GetResource(resource_id_);
DCHECK(resource->locked_for_write);
- // It's not sufficient to check sync_token_.HasData() here because the sync
- // might be null because of context loss. Even in that case we want to set the
- // sync token because it's checked in PrepareSendToParent while drawing.
- if (has_sync_token_)
+
+ resource->allocated = allocated_;
+
+ if (gpu_memory_buffer_) {
+ resource_provider_->SetGpuMemoryBuffer(resource,
+ std::move(gpu_memory_buffer_));
+ }
+ resource->image_id = image_id_;
+ resource->bound_image_id = bound_image_id_;
+ resource->dirty_image = dirty_image_;
+
+ if (set_sync_token_)
resource->UpdateSyncToken(sync_token_);
- if (synchronized_)
+ if (!async_worker_context_enabled_)
resource->SetSynchronized();
+
resource_provider_->UnlockForWrite(resource);
}
-ResourceProvider::ScopedTextureProvider::ScopedTextureProvider(
- gpu::gles2::GLES2Interface* gl,
- ScopedWriteLockGL* resource_lock,
- bool use_mailbox)
- : gl_(gl), use_mailbox_(use_mailbox) {
- if (use_mailbox_) {
- texture_id_ = gl_->CreateAndConsumeTextureCHROMIUM(
- resource_lock->target(), resource_lock->mailbox().name());
- } else {
- texture_id_ = resource_lock->texture_id();
- }
- DCHECK(texture_id_);
-}
-
-ResourceProvider::ScopedTextureProvider::~ScopedTextureProvider() {
- if (use_mailbox_)
- gl_->DeleteTextures(1, &texture_id_);
-}
-
-ResourceProvider::ScopedSkSurfaceProvider::ScopedSkSurfaceProvider(
- ContextProvider* context_provider,
- ScopedWriteLockGL* resource_lock,
- bool use_mailbox,
- bool use_distance_field_text,
- bool can_use_lcd_text,
- int msaa_sample_count)
- : texture_provider_(context_provider->ContextGL(),
- resource_lock,
- use_mailbox) {
- GrGLTextureInfo texture_info;
- texture_info.fID = texture_provider_.texture_id();
- texture_info.fTarget = resource_lock->target();
- GrBackendTextureDesc desc;
- desc.fFlags = kRenderTarget_GrBackendTextureFlag;
- desc.fWidth = resource_lock->size().width();
- desc.fHeight = resource_lock->size().height();
- desc.fConfig = ToGrPixelConfig(resource_lock->format());
- desc.fOrigin = kTopLeft_GrSurfaceOrigin;
- desc.fTextureHandle = skia::GrGLTextureInfoToGrBackendObject(texture_info);
- desc.fSampleCnt = msaa_sample_count;
-
- uint32_t flags =
- use_distance_field_text ? SkSurfaceProps::kUseDistanceFieldFonts_Flag : 0;
- // Use unknown pixel geometry to disable LCD text.
- SkSurfaceProps surface_props(flags, kUnknown_SkPixelGeometry);
- if (can_use_lcd_text) {
- // LegacyFontHost will get LCD text and skia figures out what type to use.
- surface_props =
- SkSurfaceProps(flags, SkSurfaceProps::kLegacyFontHost_InitType);
- }
- sk_surface_ = SkSurface::MakeFromBackendTextureAsRenderTarget(
- context_provider->GrContext(), desc, nullptr, &surface_props);
-}
-
-ResourceProvider::ScopedSkSurfaceProvider::~ScopedSkSurfaceProvider() {
- if (sk_surface_.get()) {
- sk_surface_->prepareForExternalIO();
- sk_surface_.reset();
+unsigned ResourceProvider::ScopedWriteLockGL::ConsumeTexture(
+ gpu::gles2::GLES2Interface* gl) {
+ DCHECK(async_worker_context_enabled_);
+ DCHECK(!mailbox_.IsZero());
+
+ unsigned gl_id = gl->CreateAndConsumeTextureCHROMIUM(target_, mailbox_.name);
+ DCHECK(gl_id);
+
+ if (!allocated_) {
+ allocated_ = true;
+ if (type_ == RESOURCE_TYPE_GPU_MEMORY_BUFFER) {
+ DCHECK(!gpu_memory_buffer_);
+ DCHECK(!image_id_);
+ gpu_memory_buffer_ = resource_provider_->AllocateGpuMemoryBuffer(
+ size_, format_, usage_, color_space_);
+ image_id_ = resource_provider_->CreateImage(gl, gpu_memory_buffer_.get(),
+ size_, format_);
+ dirty_image_ = true;
+ } else {
+ resource_provider_->AllocateGLTexture(gl, gl_id, target_, size_, format_,
+ hint_);
+ }
}
+
+ if (image_id_ && dirty_image_) {
+ gl->BindTexture(target_, gl_id);
+ if (bound_image_id_)
+ gl->ReleaseTexImage2DCHROMIUM(target_, bound_image_id_);
+ gl->BindTexImage2DCHROMIUM(target_, image_id_);
+ bound_image_id_ = image_id_;
+ dirty_image_ = false;
+ }
+
+ return gl_id;
}
void ResourceProvider::PopulateSkBitmapWithResource(SkBitmap* sk_bitmap,
@@ -1324,15 +1304,14 @@ ResourceProvider::ScopedWriteLockSoftware::ScopedWriteLockSoftware(
ResourceId resource_id)
: resource_provider_(resource_provider), resource_id_(resource_id) {
Resource* resource = resource_provider->LockForWrite(resource_id);
- resource_provider->PopulateSkBitmapWithResource(&sk_bitmap_, resource);
color_space_ = resource_provider->GetResourceColorSpaceForRaster(resource);
+ resource_provider->PopulateSkBitmapWithResource(&sk_bitmap_, resource);
DCHECK(valid());
}
ResourceProvider::ScopedWriteLockSoftware::~ScopedWriteLockSoftware() {
DCHECK(thread_checker_.CalledOnValidThread());
Resource* resource = resource_provider_->GetResource(resource_id_);
- DCHECK(resource);
resource->SetSynchronized();
resource_provider_->UnlockForWrite(resource);
}
@@ -1342,35 +1321,23 @@ ResourceProvider::ScopedWriteLockGpuMemoryBuffer::
ResourceId resource_id)
: resource_provider_(resource_provider), resource_id_(resource_id) {
Resource* resource = resource_provider->LockForWrite(resource_id);
- DCHECK(IsGpuResourceType(resource->type));
- format_ = resource->format;
+ DCHECK_EQ(resource->type, ResourceProvider::RESOURCE_TYPE_GPU_MEMORY_BUFFER);
size_ = resource->size;
+ format_ = resource->format;
usage_ = resource->usage;
- gpu_memory_buffer_ = std::move(resource->gpu_memory_buffer);
- resource->gpu_memory_buffer = nullptr;
color_space_ = resource_provider->GetResourceColorSpaceForRaster(resource);
+ gpu_memory_buffer_ = std::move(resource->gpu_memory_buffer);
}
ResourceProvider::ScopedWriteLockGpuMemoryBuffer::
~ScopedWriteLockGpuMemoryBuffer() {
DCHECK(thread_checker_.CalledOnValidThread());
Resource* resource = resource_provider_->GetResource(resource_id_);
- DCHECK(resource);
if (gpu_memory_buffer_) {
- // Note that this impacts overlay compositing, not rasterization.
- if (resource_provider_->settings_.enable_color_correct_rasterization)
- gpu_memory_buffer_->SetColorSpaceForScanout(resource->color_space);
- DCHECK(!resource->gpu_memory_buffer);
- resource_provider_->LazyCreate(resource);
- resource->gpu_memory_buffer = std::move(gpu_memory_buffer_);
- resource->allocated = true;
+ resource_provider_->SetGpuMemoryBuffer(resource,
+ std::move(gpu_memory_buffer_));
resource_provider_->LazyCreateImage(resource);
resource->dirty_image = true;
- resource->is_overlay_candidate = true;
- // GpuMemoryBuffer provides direct access to the memory used by the GPU.
- // Read lock fences are required to ensure that we're not trying to map a
- // buffer that is currently in-use by the GPU.
- resource->read_lock_fences_enabled = true;
}
resource->SetSynchronized();
resource_provider_->UnlockForWrite(resource);
@@ -1379,9 +1346,8 @@ ResourceProvider::ScopedWriteLockGpuMemoryBuffer::
gfx::GpuMemoryBuffer*
ResourceProvider::ScopedWriteLockGpuMemoryBuffer::GetGpuMemoryBuffer() {
if (!gpu_memory_buffer_) {
- gpu_memory_buffer_ =
- resource_provider_->gpu_memory_buffer_manager_->CreateGpuMemoryBuffer(
- size_, BufferFormat(format_), usage_, gpu::kNullSurfaceHandle);
+ gpu_memory_buffer_ = resource_provider_->AllocateGpuMemoryBuffer(
+ size_, format_, usage_, color_space_);
}
return gpu_memory_buffer_.get();
}
@@ -1501,14 +1467,18 @@ void ResourceProvider::PrepareSendToParent(const ResourceIdArray& resource_ids,
resources.push_back(resource);
}
- // Lazily create any mailboxes and verify all unverified sync tokens.
+ // Lazily create any mailboxes and verify all unverified sync tokens. Also
+ // upload GMB resources to GPU if necessary.
std::vector<GLbyte*> unverified_sync_tokens;
std::vector<Resource*> need_synchronization_resources;
for (Resource* resource : resources) {
if (!IsGpuResourceType(resource->type))
continue;
- CreateMailboxAndBindResource(gl, resource);
+ LazyCreateMailbox(resource);
+
+ if (resource->image_id && resource->dirty_image)
+ BindImageForSampling(resource);
if (settings_.delegated_sync_points_required) {
if (resource->needs_sync_token()) {
@@ -1675,9 +1645,7 @@ void ResourceProvider::ReceiveReturnsFromParent(
DCHECK(!resource->has_shared_bitmap_id);
if (resource->origin == Resource::INTERNAL) {
DCHECK(resource->gl_id);
- DCHECK(returned.sync_token.HasData());
gl->WaitSyncTokenCHROMIUM(returned.sync_token.GetConstData());
- resource->SetSynchronized();
} else {
DCHECK(!resource->gl_id);
resource->UpdateSyncToken(returned.sync_token);
@@ -1749,31 +1717,6 @@ void ResourceProvider::SendPromotionHints(
}
#endif
-void ResourceProvider::CreateMailboxAndBindResource(
- gpu::gles2::GLES2Interface* gl,
- Resource* resource) {
- DCHECK(IsGpuResourceType(resource->type));
- DCHECK(gl);
-
- if (!resource->mailbox().IsValid()) {
- LazyCreate(resource);
-
- gpu::MailboxHolder mailbox_holder;
- mailbox_holder.texture_target = resource->target;
- gl->GenMailboxCHROMIUM(mailbox_holder.mailbox.name);
- gl->ProduceTextureDirectCHROMIUM(resource->gl_id,
- mailbox_holder.texture_target,
- mailbox_holder.mailbox.name);
- resource->set_mailbox(TextureMailbox(mailbox_holder));
- }
-
- if (resource->image_id && resource->dirty_image) {
- DCHECK(resource->gl_id);
- DCHECK(resource->origin == Resource::INTERNAL);
- BindImageForSampling(resource);
- }
-}
-
void ResourceProvider::TransferResource(Resource* source,
ResourceId id,
TransferableResource* resource) {
@@ -1967,6 +1910,7 @@ void ResourceProvider::LazyCreate(Resource* resource) {
DCHECK(resource->origin == Resource::INTERNAL);
DCHECK(!resource->mailbox().IsValid());
resource->gl_id = texture_id_allocator_->NextId();
+ DCHECK(resource->gl_id);
GLES2Interface* gl = ContextGL();
DCHECK(gl);
@@ -1986,6 +1930,26 @@ void ResourceProvider::LazyCreate(Resource* resource) {
}
}
+void ResourceProvider::LazyCreateMailbox(Resource* resource) {
+ DCHECK(resource);
+ if (resource->mailbox().IsValid())
+ return;
+
+ LazyCreate(resource);
+ DCHECK(resource->gl_id);
+
+ gpu::gles2::GLES2Interface* gl = ContextGL();
+ DCHECK(gl);
+
+ gpu::MailboxHolder mailbox_holder;
+ mailbox_holder.texture_target = resource->target;
+ gl->GenMailboxCHROMIUM(mailbox_holder.mailbox.name);
+ gl->ProduceTextureDirectCHROMIUM(resource->gl_id,
+ mailbox_holder.texture_target,
+ mailbox_holder.mailbox.name);
+ resource->set_mailbox(TextureMailbox(mailbox_holder));
+}
+
void ResourceProvider::AllocateForTesting(ResourceId id) {
LazyAllocate(GetResource(id));
}
@@ -1994,83 +1958,116 @@ void ResourceProvider::LazyAllocate(Resource* resource) {
DCHECK(resource);
if (resource->allocated)
return;
- LazyCreate(resource);
- if (!resource->gl_id)
- return;
+ // Bitmap resources are always allocated on initialization.
+ DCHECK(IsGpuResourceType(resource->type));
resource->allocated = true;
- GLES2Interface* gl = ContextGL();
- gfx::Size& size = resource->size;
- ResourceFormat format = resource->format;
- gl->BindTexture(resource->target, resource->gl_id);
- if (resource->type == RESOURCE_TYPE_GPU_MEMORY_BUFFER) {
- resource->gpu_memory_buffer =
- gpu_memory_buffer_manager_->CreateGpuMemoryBuffer(
- size, BufferFormat(format), resource->usage,
- gpu::kNullSurfaceHandle);
- // Note that this impacts overlay compositing, not rasterization.
- if (resource->gpu_memory_buffer &&
- settings_.enable_color_correct_rasterization) {
- resource->gpu_memory_buffer->SetColorSpaceForScanout(
- resource->color_space);
- }
+ if (resource->type == RESOURCE_TYPE_GPU_MEMORY_BUFFER) {
+ SetGpuMemoryBuffer(resource, AllocateGpuMemoryBuffer(
+ resource->size, resource->format,
+ resource->usage, resource->color_space));
LazyCreateImage(resource);
- resource->dirty_image = true;
- resource->is_overlay_candidate = true;
- // GpuMemoryBuffer provides direct access to the memory used by the GPU.
- // Read lock fences are required to ensure that we're not trying to map a
- // buffer that is currently in-use by the GPU.
- resource->read_lock_fences_enabled = true;
- } else if (settings_.use_texture_storage_ext &&
- IsFormatSupportedForStorage(format,
- settings_.use_texture_format_bgra) &&
- (resource->hint & TEXTURE_HINT_IMMUTABLE)) {
- GLenum storage_format = TextureToStorageFormat(format);
- gl->TexStorage2DEXT(resource->target, 1, storage_format, size.width(),
- size.height());
} else {
+ LazyCreate(resource);
+ AllocateGLTexture(ContextGL(), resource->gl_id, resource->target,
+ resource->size, resource->format, resource->hint);
+ }
+}
+
+void ResourceProvider::AllocateGLTexture(gpu::gles2::GLES2Interface* gl,
+ unsigned gl_id,
+ GLenum target,
+ const gfx::Size& size,
+ ResourceFormat format,
+ TextureHint hint) {
+ if (settings_.use_texture_storage_ext &&
+ IsFormatSupportedForStorage(format, settings_.use_texture_format_bgra) &&
+ (hint & TEXTURE_HINT_IMMUTABLE)) {
+ GLenum storage_format = TextureToStorageFormat(format);
+ gl->BindTexture(target, gl_id);
+ gl->TexStorage2DEXT(target, 1, storage_format, size.width(), size.height());
+ } else if (format != ETC1) {
// ETC1 does not support preallocation.
- if (format != ETC1) {
- gl->TexImage2D(resource->target, 0, GLInternalFormat(format),
- size.width(), size.height(), 0, GLDataFormat(format),
- GLDataType(format), nullptr);
- }
+ gl->BindTexture(target, gl_id);
+ gl->TexImage2D(target, 0, GLInternalFormat(format), size.width(),
+ size.height(), 0, GLDataFormat(format), GLDataType(format),
+ nullptr);
}
}
-void ResourceProvider::LazyCreateImage(Resource* resource) {
- DCHECK(resource->gpu_memory_buffer);
- DCHECK(resource->gl_id);
- DCHECK(resource->allocated);
+std::unique_ptr<gfx::GpuMemoryBuffer> ResourceProvider::AllocateGpuMemoryBuffer(
+ const gfx::Size& size,
+ ResourceFormat format,
+ gfx::BufferUsage usage,
+ gfx::ColorSpace color_space) {
+ std::unique_ptr<gfx::GpuMemoryBuffer> gpu_memory_buffer =
+ gpu_memory_buffer_manager_->CreateGpuMemoryBuffer(
+ size, BufferFormat(format), usage, gpu::kNullSurfaceHandle);
+ // Note that this impacts overlay compositing, not rasterization.
+ if (settings_.enable_color_correct_rasterization)
+ gpu_memory_buffer->SetColorSpaceForScanout(color_space);
+ return gpu_memory_buffer;
+}
+
+void ResourceProvider::SetGpuMemoryBuffer(
+ Resource* resource,
+ std::unique_ptr<gfx::GpuMemoryBuffer> gpu_memory_buffer) {
+ DCHECK(gpu_memory_buffer);
+ DCHECK(resource->locked_for_write);
+ DCHECK(!resource->gpu_memory_buffer);
+ resource->gpu_memory_buffer = std::move(gpu_memory_buffer);
+ resource->allocated = true;
+ resource->is_overlay_candidate = true;
+ // GpuMemoryBuffer provides direct access to the memory used by the GPU.
+ // Read lock fences are required to ensure that we're not trying to map a
+ // buffer that is currently in-use by the GPU.
+ resource->read_lock_fences_enabled = true;
+}
+
+unsigned ResourceProvider::CreateImage(gpu::gles2::GLES2Interface* gl,
+ gfx::GpuMemoryBuffer* gpu_memory_buffer,
+ const gfx::Size& size,
+ ResourceFormat format) {
+ DCHECK(gl);
+ DCHECK(gpu_memory_buffer);
// Avoid crashing in release builds if GpuMemoryBuffer allocation fails.
// http://crbug.com/554541
- if (!resource->gpu_memory_buffer)
- return;
- if (!resource->image_id) {
- GLES2Interface* gl = ContextGL();
- DCHECK(gl);
-
+ if (!gpu_memory_buffer)
+ return 0;
#if defined(OS_CHROMEOS) && defined(ARCH_CPU_ARM_FAMILY)
- // TODO(reveman): This avoids a performance problem on ARM ChromeOS
- // devices. This only works with shared memory backed buffers.
- // crbug.com/580166
- DCHECK_EQ(resource->gpu_memory_buffer->GetHandle().type,
- gfx::SHARED_MEMORY_BUFFER);
+ // TODO(reveman): This avoids a performance problem on ARM ChromeOS
+ // devices. This only works with shared memory backed buffers.
+ // crbug.com/580166
+ DCHECK_EQ(gpu_memory_buffer->GetHandle().type, gfx::SHARED_MEMORY_BUFFER);
#endif
- resource->image_id = gl->CreateImageCHROMIUM(
- resource->gpu_memory_buffer->AsClientBuffer(), resource->size.width(),
- resource->size.height(), GLInternalFormat(resource->format));
- DCHECK(resource->image_id || IsGLContextLost());
+ unsigned image_id =
+ gl->CreateImageCHROMIUM(gpu_memory_buffer->AsClientBuffer(), size.width(),
+ size.height(), GLInternalFormat(format));
+ DCHECK(image_id || gl->GetGraphicsResetStatusKHR() != GL_NO_ERROR);
+ return image_id;
+}
- resource->SetLocallyUsed();
- }
+void ResourceProvider::LazyCreateImage(Resource* resource) {
+ DCHECK(resource);
+ if (resource->image_id)
+ return;
+
+ LazyCreate(resource);
+ DCHECK(resource->gl_id);
+
+ resource->image_id =
+ CreateImage(ContextGL(), resource->gpu_memory_buffer.get(),
+ resource->size, resource->format);
+ resource->dirty_image = true;
}
void ResourceProvider::BindImageForSampling(Resource* resource) {
- GLES2Interface* gl = ContextGL();
DCHECK(resource->gl_id);
DCHECK(resource->image_id);
+ gpu::gles2::GLES2Interface* gl = ContextGL();
+ DCHECK(gl);
+
// Release image currently bound to texture.
gl->BindTexture(resource->target, resource->gl_id);
if (resource->bound_image_id)
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