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dawn-cmake/src/dawn_native/opengl/CommandBufferGL.cpp
Corentin Wallez ef869c2d01 Use SubresourceStorage to track per-subresource state. 
Using this container is a small performance regression in the simple
cases where all subresources are the same, or when the texture has few
subrsources. However it give better performance in the hard subresource
tracking cases of textures with many subresources.

Using SubresourceStorage also makes it easier to work with compressed
storage since the compression is mostly transparent. It reduces code
duplication and prevent bugs from appearing when a developer would
forget to handle compression.

This fixes a state tracking issue in ValidatePassResourceUsage where the
function didn't correctly handle the case where the PassResourceUsage
was compressed.

Also removes the unused vulkan::Texture::TransitionFullUsage.

Also makes SubresourceStorage<T> only require operator== on T and not
operator !=.

Also fixes the texture format's aspect being used to create pipeline
barriers instead of the range's aspects.

Bug: dawn:441

Change-Id: I234b8191f39a09b541c1c63a60cccd6cee970550
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/37706
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Commit-Queue: Corentin Wallez <cwallez@chromium.org>
Auto-Submit: Corentin Wallez <cwallez@chromium.org>
2021-01-21 11:07:44 +00:00

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// Copyright 2017 The Dawn Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "dawn_native/opengl/CommandBufferGL.h"
#include "dawn_native/BindGroup.h"
#include "dawn_native/BindGroupTracker.h"
#include "dawn_native/CommandEncoder.h"
#include "dawn_native/Commands.h"
#include "dawn_native/RenderBundle.h"
#include "dawn_native/opengl/BufferGL.h"
#include "dawn_native/opengl/ComputePipelineGL.h"
#include "dawn_native/opengl/DeviceGL.h"
#include "dawn_native/opengl/Forward.h"
#include "dawn_native/opengl/PersistentPipelineStateGL.h"
#include "dawn_native/opengl/PipelineLayoutGL.h"
#include "dawn_native/opengl/RenderPipelineGL.h"
#include "dawn_native/opengl/SamplerGL.h"
#include "dawn_native/opengl/TextureGL.h"
#include "dawn_native/opengl/UtilsGL.h"
#include <cstring>
namespace dawn_native { namespace opengl {
namespace {
GLenum IndexFormatType(wgpu::IndexFormat format) {
switch (format) {
case wgpu::IndexFormat::Uint16:
return GL_UNSIGNED_SHORT;
case wgpu::IndexFormat::Uint32:
return GL_UNSIGNED_INT;
case wgpu::IndexFormat::Undefined:
UNREACHABLE();
}
}
GLenum VertexFormatType(wgpu::VertexFormat format) {
switch (format) {
case wgpu::VertexFormat::UChar2:
case wgpu::VertexFormat::UChar4:
case wgpu::VertexFormat::UChar2Norm:
case wgpu::VertexFormat::UChar4Norm:
return GL_UNSIGNED_BYTE;
case wgpu::VertexFormat::Char2:
case wgpu::VertexFormat::Char4:
case wgpu::VertexFormat::Char2Norm:
case wgpu::VertexFormat::Char4Norm:
return GL_BYTE;
case wgpu::VertexFormat::UShort2:
case wgpu::VertexFormat::UShort4:
case wgpu::VertexFormat::UShort2Norm:
case wgpu::VertexFormat::UShort4Norm:
return GL_UNSIGNED_SHORT;
case wgpu::VertexFormat::Short2:
case wgpu::VertexFormat::Short4:
case wgpu::VertexFormat::Short2Norm:
case wgpu::VertexFormat::Short4Norm:
return GL_SHORT;
case wgpu::VertexFormat::Half2:
case wgpu::VertexFormat::Half4:
return GL_HALF_FLOAT;
case wgpu::VertexFormat::Float:
case wgpu::VertexFormat::Float2:
case wgpu::VertexFormat::Float3:
case wgpu::VertexFormat::Float4:
return GL_FLOAT;
case wgpu::VertexFormat::UInt:
case wgpu::VertexFormat::UInt2:
case wgpu::VertexFormat::UInt3:
case wgpu::VertexFormat::UInt4:
return GL_UNSIGNED_INT;
case wgpu::VertexFormat::Int:
case wgpu::VertexFormat::Int2:
case wgpu::VertexFormat::Int3:
case wgpu::VertexFormat::Int4:
return GL_INT;
}
}
GLboolean VertexFormatIsNormalized(wgpu::VertexFormat format) {
switch (format) {
case wgpu::VertexFormat::UChar2Norm:
case wgpu::VertexFormat::UChar4Norm:
case wgpu::VertexFormat::Char2Norm:
case wgpu::VertexFormat::Char4Norm:
case wgpu::VertexFormat::UShort2Norm:
case wgpu::VertexFormat::UShort4Norm:
case wgpu::VertexFormat::Short2Norm:
case wgpu::VertexFormat::Short4Norm:
return GL_TRUE;
default:
return GL_FALSE;
}
}
bool VertexFormatIsInt(wgpu::VertexFormat format) {
switch (format) {
case wgpu::VertexFormat::UChar2:
case wgpu::VertexFormat::UChar4:
case wgpu::VertexFormat::Char2:
case wgpu::VertexFormat::Char4:
case wgpu::VertexFormat::UShort2:
case wgpu::VertexFormat::UShort4:
case wgpu::VertexFormat::Short2:
case wgpu::VertexFormat::Short4:
case wgpu::VertexFormat::UInt:
case wgpu::VertexFormat::UInt2:
case wgpu::VertexFormat::UInt3:
case wgpu::VertexFormat::UInt4:
case wgpu::VertexFormat::Int:
case wgpu::VertexFormat::Int2:
case wgpu::VertexFormat::Int3:
case wgpu::VertexFormat::Int4:
return true;
default:
return false;
}
}
// Vertex buffers and index buffers are implemented as part of an OpenGL VAO that
// corresponds to a VertexState. On the contrary in Dawn they are part of the global state.
// This means that we have to re-apply these buffers on a VertexState change.
class VertexStateBufferBindingTracker {
public:
void OnSetIndexBuffer(BufferBase* buffer) {
mIndexBufferDirty = true;
mIndexBuffer = ToBackend(buffer);
}
void OnSetVertexBuffer(VertexBufferSlot slot, BufferBase* buffer, uint64_t offset) {
mVertexBuffers[slot] = ToBackend(buffer);
mVertexBufferOffsets[slot] = offset;
mDirtyVertexBuffers.set(slot);
}
void OnSetPipeline(RenderPipelineBase* pipeline) {
if (mLastPipeline == pipeline) {
return;
}
mIndexBufferDirty = true;
mDirtyVertexBuffers |= pipeline->GetVertexBufferSlotsUsed();
mLastPipeline = pipeline;
}
void Apply(const OpenGLFunctions& gl) {
if (mIndexBufferDirty && mIndexBuffer != nullptr) {
gl.BindBuffer(GL_ELEMENT_ARRAY_BUFFER, mIndexBuffer->GetHandle());
mIndexBufferDirty = false;
}
for (VertexBufferSlot slot : IterateBitSet(
mDirtyVertexBuffers & mLastPipeline->GetVertexBufferSlotsUsed())) {
for (VertexAttributeLocation location : IterateBitSet(
ToBackend(mLastPipeline)->GetAttributesUsingVertexBuffer(slot))) {
const VertexAttributeInfo& attribute =
mLastPipeline->GetAttribute(location);
GLuint attribIndex = static_cast<GLuint>(static_cast<uint8_t>(location));
GLuint buffer = mVertexBuffers[slot]->GetHandle();
uint64_t offset = mVertexBufferOffsets[slot];
const VertexBufferInfo& vertexBuffer = mLastPipeline->GetVertexBuffer(slot);
uint32_t components = VertexFormatNumComponents(attribute.format);
GLenum formatType = VertexFormatType(attribute.format);
GLboolean normalized = VertexFormatIsNormalized(attribute.format);
gl.BindBuffer(GL_ARRAY_BUFFER, buffer);
if (VertexFormatIsInt(attribute.format)) {
gl.VertexAttribIPointer(
attribIndex, components, formatType, vertexBuffer.arrayStride,
reinterpret_cast<void*>(
static_cast<intptr_t>(offset + attribute.offset)));
} else {
gl.VertexAttribPointer(attribIndex, components, formatType, normalized,
vertexBuffer.arrayStride,
reinterpret_cast<void*>(static_cast<intptr_t>(
offset + attribute.offset)));
}
}
}
mDirtyVertexBuffers.reset();
}
private:
bool mIndexBufferDirty = false;
Buffer* mIndexBuffer = nullptr;
ityp::bitset<VertexBufferSlot, kMaxVertexBuffers> mDirtyVertexBuffers;
ityp::array<VertexBufferSlot, Buffer*, kMaxVertexBuffers> mVertexBuffers;
ityp::array<VertexBufferSlot, uint64_t, kMaxVertexBuffers> mVertexBufferOffsets;
RenderPipelineBase* mLastPipeline = nullptr;
};
class BindGroupTracker : public BindGroupTrackerBase<false, uint64_t> {
public:
void OnSetPipeline(RenderPipeline* pipeline) {
BindGroupTrackerBase::OnSetPipeline(pipeline);
mPipeline = pipeline;
}
void OnSetPipeline(ComputePipeline* pipeline) {
BindGroupTrackerBase::OnSetPipeline(pipeline);
mPipeline = pipeline;
}
void Apply(const OpenGLFunctions& gl) {
for (BindGroupIndex index :
IterateBitSet(mDirtyBindGroupsObjectChangedOrIsDynamic)) {
ApplyBindGroup(gl, index, mBindGroups[index], mDynamicOffsetCounts[index],
mDynamicOffsets[index].data());
}
DidApply();
}
private:
void ApplyBindGroup(const OpenGLFunctions& gl,
BindGroupIndex index,
BindGroupBase* group,
uint32_t dynamicOffsetCount,
uint64_t* dynamicOffsets) {
const auto& indices = ToBackend(mPipelineLayout)->GetBindingIndexInfo()[index];
uint32_t currentDynamicOffsetIndex = 0;
for (BindingIndex bindingIndex{0};
bindingIndex < group->GetLayout()->GetBindingCount(); ++bindingIndex) {
const BindingInfo& bindingInfo =
group->GetLayout()->GetBindingInfo(bindingIndex);
switch (bindingInfo.bindingType) {
case BindingInfoType::Buffer: {
BufferBinding binding = group->GetBindingAsBufferBinding(bindingIndex);
GLuint buffer = ToBackend(binding.buffer)->GetHandle();
GLuint index = indices[bindingIndex];
GLuint offset = binding.offset;
if (bindingInfo.buffer.hasDynamicOffset) {
offset += dynamicOffsets[currentDynamicOffsetIndex];
++currentDynamicOffsetIndex;
}
GLenum target;
switch (bindingInfo.buffer.type) {
case wgpu::BufferBindingType::Uniform:
target = GL_UNIFORM_BUFFER;
break;
case wgpu::BufferBindingType::Storage:
case wgpu::BufferBindingType::ReadOnlyStorage:
target = GL_SHADER_STORAGE_BUFFER;
break;
case wgpu::BufferBindingType::Undefined:
UNREACHABLE();
}
gl.BindBufferRange(target, index, buffer, offset, binding.size);
break;
}
case BindingInfoType::Sampler: {
Sampler* sampler = ToBackend(group->GetBindingAsSampler(bindingIndex));
GLuint samplerIndex = indices[bindingIndex];
for (PipelineGL::SamplerUnit unit :
mPipeline->GetTextureUnitsForSampler(samplerIndex)) {
// Only use filtering for certain texture units, because int
// and uint texture are only complete without filtering
if (unit.shouldUseFiltering) {
gl.BindSampler(unit.unit, sampler->GetFilteringHandle());
} else {
gl.BindSampler(unit.unit, sampler->GetNonFilteringHandle());
}
}
break;
}
case BindingInfoType::Texture: {
TextureView* view =
ToBackend(group->GetBindingAsTextureView(bindingIndex));
GLuint handle = view->GetHandle();
GLenum target = view->GetGLTarget();
GLuint viewIndex = indices[bindingIndex];
for (auto unit : mPipeline->GetTextureUnitsForTextureView(viewIndex)) {
gl.ActiveTexture(GL_TEXTURE0 + unit);
gl.BindTexture(target, handle);
if (ToBackend(view->GetTexture())->GetGLFormat().format ==
GL_DEPTH_STENCIL) {
Aspect aspect = view->GetAspects();
ASSERT(HasOneBit(aspect));
switch (aspect) {
case Aspect::None:
case Aspect::Color:
case Aspect::CombinedDepthStencil:
UNREACHABLE();
case Aspect::Depth:
gl.TexParameteri(target, GL_DEPTH_STENCIL_TEXTURE_MODE,
GL_DEPTH_COMPONENT);
break;
case Aspect::Stencil:
gl.TexParameteri(target, GL_DEPTH_STENCIL_TEXTURE_MODE,
GL_STENCIL_INDEX);
break;
}
}
}
break;
}
case BindingInfoType::StorageTexture: {
TextureView* view =
ToBackend(group->GetBindingAsTextureView(bindingIndex));
Texture* texture = ToBackend(view->GetTexture());
GLuint handle = texture->GetHandle();
GLuint imageIndex = indices[bindingIndex];
GLenum access;
switch (bindingInfo.storageTexture.access) {
case wgpu::StorageTextureAccess::ReadOnly:
access = GL_READ_ONLY;
break;
case wgpu::StorageTextureAccess::WriteOnly:
access = GL_WRITE_ONLY;
break;
case wgpu::StorageTextureAccess::Undefined:
UNREACHABLE();
}
// OpenGL ES only supports either binding a layer or the entire
// texture in glBindImageTexture().
GLboolean isLayered;
if (view->GetLayerCount() == 1) {
isLayered = GL_FALSE;
} else if (texture->GetArrayLayers() == view->GetLayerCount()) {
isLayered = GL_TRUE;
} else {
UNREACHABLE();
}
gl.BindImageTexture(imageIndex, handle, view->GetBaseMipLevel(),
isLayered, view->GetBaseArrayLayer(), access,
texture->GetGLFormat().internalFormat);
break;
}
}
}
}
PipelineGL* mPipeline = nullptr;
};
void ResolveMultisampledRenderTargets(const OpenGLFunctions& gl,
const BeginRenderPassCmd* renderPass) {
ASSERT(renderPass != nullptr);
GLuint readFbo = 0;
GLuint writeFbo = 0;
for (ColorAttachmentIndex i :
IterateBitSet(renderPass->attachmentState->GetColorAttachmentsMask())) {
if (renderPass->colorAttachments[i].resolveTarget != nullptr) {
if (readFbo == 0) {
ASSERT(writeFbo == 0);
gl.GenFramebuffers(1, &readFbo);
gl.GenFramebuffers(1, &writeFbo);
}
const TextureBase* colorTexture =
renderPass->colorAttachments[i].view->GetTexture();
ASSERT(colorTexture->IsMultisampledTexture());
ASSERT(colorTexture->GetArrayLayers() == 1);
ASSERT(renderPass->colorAttachments[i].view->GetBaseMipLevel() == 0);
GLuint colorHandle = ToBackend(colorTexture)->GetHandle();
gl.BindFramebuffer(GL_READ_FRAMEBUFFER, readFbo);
gl.FramebufferTexture2D(GL_READ_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
ToBackend(colorTexture)->GetGLTarget(), colorHandle, 0);
const TextureBase* resolveTexture =
renderPass->colorAttachments[i].resolveTarget->GetTexture();
GLuint resolveTextureHandle = ToBackend(resolveTexture)->GetHandle();
GLuint resolveTargetMipmapLevel =
renderPass->colorAttachments[i].resolveTarget->GetBaseMipLevel();
gl.BindFramebuffer(GL_DRAW_FRAMEBUFFER, writeFbo);
if (resolveTexture->GetArrayLayers() == 1) {
gl.FramebufferTexture2D(GL_DRAW_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
GL_TEXTURE_2D, resolveTextureHandle,
resolveTargetMipmapLevel);
} else {
GLuint resolveTargetArrayLayer =
renderPass->colorAttachments[i].resolveTarget->GetBaseArrayLayer();
gl.FramebufferTextureLayer(GL_DRAW_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
resolveTextureHandle, resolveTargetMipmapLevel,
resolveTargetArrayLayer);
}
gl.BlitFramebuffer(0, 0, renderPass->width, renderPass->height, 0, 0,
renderPass->width, renderPass->height, GL_COLOR_BUFFER_BIT,
GL_NEAREST);
}
}
gl.DeleteFramebuffers(1, &readFbo);
gl.DeleteFramebuffers(1, &writeFbo);
}
// OpenGL SPEC requires the source/destination region must be a region that is contained
// within srcImage/dstImage. Here the size of the image refers to the virtual size, while
// Dawn validates texture copy extent with the physical size, so we need to re-calculate the
// texture copy extent to ensure it should fit in the virtual size of the subresource.
Extent3D ComputeTextureCopyExtent(const TextureCopy& textureCopy,
const Extent3D& copySize) {
Extent3D validTextureCopyExtent = copySize;
const TextureBase* texture = textureCopy.texture.Get();
Extent3D virtualSizeAtLevel = texture->GetMipLevelVirtualSize(textureCopy.mipLevel);
if (textureCopy.origin.x + copySize.width > virtualSizeAtLevel.width) {
ASSERT(texture->GetFormat().isCompressed);
validTextureCopyExtent.width = virtualSizeAtLevel.width - textureCopy.origin.x;
}
if (textureCopy.origin.y + copySize.height > virtualSizeAtLevel.height) {
ASSERT(texture->GetFormat().isCompressed);
validTextureCopyExtent.height = virtualSizeAtLevel.height - textureCopy.origin.y;
}
return validTextureCopyExtent;
}
} // namespace
CommandBuffer::CommandBuffer(CommandEncoder* encoder, const CommandBufferDescriptor* descriptor)
: CommandBufferBase(encoder, descriptor) {
}
MaybeError CommandBuffer::Execute() {
const OpenGLFunctions& gl = ToBackend(GetDevice())->gl;
auto TransitionForPass = [](const PassResourceUsage& usages) {
for (size_t i = 0; i < usages.textures.size(); i++) {
Texture* texture = ToBackend(usages.textures[i]);
// Clear textures that are not output attachments. Output attachments will be
// cleared in BeginRenderPass by setting the loadop to clear when the
// texture subresource has not been initialized before the render pass.
if (!(usages.textureUsages[i].usage & wgpu::TextureUsage::RenderAttachment)) {
texture->EnsureSubresourceContentInitialized(texture->GetAllSubresources());
}
}
for (BufferBase* bufferBase : usages.buffers) {
ToBackend(bufferBase)->EnsureDataInitialized();
}
};
const std::vector<PassResourceUsage>& passResourceUsages = GetResourceUsages().perPass;
uint32_t nextPassNumber = 0;
Command type;
while (mCommands.NextCommandId(&type)) {
switch (type) {
case Command::BeginComputePass: {
mCommands.NextCommand<BeginComputePassCmd>();
TransitionForPass(passResourceUsages[nextPassNumber]);
DAWN_TRY(ExecuteComputePass());
nextPassNumber++;
break;
}
case Command::BeginRenderPass: {
auto* cmd = mCommands.NextCommand<BeginRenderPassCmd>();
TransitionForPass(passResourceUsages[nextPassNumber]);
LazyClearRenderPassAttachments(cmd);
DAWN_TRY(ExecuteRenderPass(cmd));
nextPassNumber++;
break;
}
case Command::CopyBufferToBuffer: {
CopyBufferToBufferCmd* copy = mCommands.NextCommand<CopyBufferToBufferCmd>();
ToBackend(copy->source)->EnsureDataInitialized();
ToBackend(copy->destination)
->EnsureDataInitializedAsDestination(copy->destinationOffset, copy->size);
gl.BindBuffer(GL_PIXEL_PACK_BUFFER, ToBackend(copy->source)->GetHandle());
gl.BindBuffer(GL_PIXEL_UNPACK_BUFFER,
ToBackend(copy->destination)->GetHandle());
gl.CopyBufferSubData(GL_PIXEL_PACK_BUFFER, GL_PIXEL_UNPACK_BUFFER,
copy->sourceOffset, copy->destinationOffset, copy->size);
gl.BindBuffer(GL_PIXEL_PACK_BUFFER, 0);
gl.BindBuffer(GL_PIXEL_UNPACK_BUFFER, 0);
break;
}
case Command::CopyBufferToTexture: {
CopyBufferToTextureCmd* copy = mCommands.NextCommand<CopyBufferToTextureCmd>();
auto& src = copy->source;
auto& dst = copy->destination;
auto& copySize = copy->copySize;
Buffer* buffer = ToBackend(src.buffer.Get());
Texture* texture = ToBackend(dst.texture.Get());
GLenum target = texture->GetGLTarget();
const GLFormat& format = texture->GetGLFormat();
if (dst.aspect == Aspect::Stencil) {
return DAWN_VALIDATION_ERROR(
"Copies to stencil textures unsupported on OpenGL");
}
ASSERT(dst.aspect == Aspect::Color);
buffer->EnsureDataInitialized();
ASSERT(texture->GetDimension() == wgpu::TextureDimension::e2D);
SubresourceRange subresources =
GetSubresourcesAffectedByCopy(dst, copy->copySize);
if (IsCompleteSubresourceCopiedTo(texture, copySize, dst.mipLevel)) {
texture->SetIsSubresourceContentInitialized(true, subresources);
} else {
texture->EnsureSubresourceContentInitialized(subresources);
}
gl.BindBuffer(GL_PIXEL_UNPACK_BUFFER, buffer->GetHandle());
gl.ActiveTexture(GL_TEXTURE0);
gl.BindTexture(target, texture->GetHandle());
const Format& formatInfo = texture->GetFormat();
const TexelBlockInfo& blockInfo = formatInfo.GetAspectInfo(dst.aspect).block;
gl.PixelStorei(GL_UNPACK_ROW_LENGTH,
src.bytesPerRow / blockInfo.byteSize * blockInfo.width);
gl.PixelStorei(GL_UNPACK_IMAGE_HEIGHT, src.rowsPerImage * blockInfo.height);
if (formatInfo.isCompressed) {
ASSERT(texture->GetDimension() == wgpu::TextureDimension::e2D);
Extent3D copyExtent = ComputeTextureCopyExtent(dst, copySize);
// In GLES glPixelStorei() doesn't affect CompressedTexSubImage*D() and
// GL_UNPACK_COMPRESSED_BLOCK_* isn't defined, so we have to workaround
// this limitation by copying the compressed texture data once per row.
// See OpenGL ES 3.2 SPEC Chapter 8.4.1, "Pixel Storage Modes and Pixel
// Buffer Objects" for more details.
if (gl.GetVersion().IsES()) {
uint64_t copyDataSizePerBlockRow =
(copySize.width / blockInfo.width) * blockInfo.byteSize;
size_t copyBlockRowsPerImage = copySize.height / blockInfo.height;
if (texture->GetArrayLayers() > 1) {
// TODO(jiawei.shao@intel.com): do a single copy when the data is
// correctly packed.
for (size_t copyZ = 0; copyZ < copyExtent.depth; ++copyZ) {
uintptr_t offsetPerImage = static_cast<uintptr_t>(
src.offset + copyZ * src.bytesPerRow * src.rowsPerImage);
uint32_t dstOriginY = dst.origin.y;
uint32_t dstOriginZ = dst.origin.z + copyZ;
for (size_t copyBlockRow = 0;
copyBlockRow < copyBlockRowsPerImage; ++copyBlockRow) {
gl.CompressedTexSubImage3D(
target, dst.mipLevel, dst.origin.x, dstOriginY,
dstOriginZ, copyExtent.width, blockInfo.height, 1,
format.internalFormat, copyDataSizePerBlockRow,
reinterpret_cast<void*>(
static_cast<uintptr_t>(offsetPerImage)));
offsetPerImage += src.bytesPerRow;
dstOriginY += blockInfo.height;
}
}
} else {
uintptr_t offset = static_cast<uintptr_t>(src.offset);
uint32_t dstOriginY = dst.origin.y;
// TODO(jiawei.shao@intel.com): do a single copy when the data is
// correctly packed.
for (size_t copyBlockRow = 0; copyBlockRow < copyBlockRowsPerImage;
++copyBlockRow) {
gl.CompressedTexSubImage2D(
target, dst.mipLevel, dst.origin.x, dstOriginY,
copyExtent.width, blockInfo.height, format.internalFormat,
copyDataSizePerBlockRow,
reinterpret_cast<void*>(static_cast<uintptr_t>(offset)));
offset += src.bytesPerRow;
dstOriginY += blockInfo.height;
}
}
} else {
gl.PixelStorei(GL_UNPACK_COMPRESSED_BLOCK_SIZE, blockInfo.byteSize);
gl.PixelStorei(GL_UNPACK_COMPRESSED_BLOCK_WIDTH, blockInfo.width);
gl.PixelStorei(GL_UNPACK_COMPRESSED_BLOCK_HEIGHT, blockInfo.height);
gl.PixelStorei(GL_UNPACK_COMPRESSED_BLOCK_DEPTH, 1);
uint64_t copyDataSize = (copySize.width / blockInfo.width) *
(copySize.height / blockInfo.height) *
blockInfo.byteSize * copySize.depth;
if (texture->GetArrayLayers() > 1) {
gl.CompressedTexSubImage3D(
target, dst.mipLevel, dst.origin.x, dst.origin.y, dst.origin.z,
copyExtent.width, copyExtent.height, copyExtent.depth,
format.internalFormat, copyDataSize,
reinterpret_cast<void*>(static_cast<uintptr_t>(src.offset)));
} else {
gl.CompressedTexSubImage2D(
target, dst.mipLevel, dst.origin.x, dst.origin.y,
copyExtent.width, copyExtent.height, format.internalFormat,
copyDataSize,
reinterpret_cast<void*>(static_cast<uintptr_t>(src.offset)));
}
}
} else {
switch (texture->GetDimension()) {
case wgpu::TextureDimension::e2D:
if (texture->GetArrayLayers() > 1) {
gl.TexSubImage3D(target, dst.mipLevel, dst.origin.x,
dst.origin.y, dst.origin.z, copySize.width,
copySize.height, copySize.depth, format.format,
format.type,
reinterpret_cast<void*>(
static_cast<uintptr_t>(src.offset)));
} else {
gl.TexSubImage2D(target, dst.mipLevel, dst.origin.x,
dst.origin.y, copySize.width, copySize.height,
format.format, format.type,
reinterpret_cast<void*>(
static_cast<uintptr_t>(src.offset)));
}
break;
case wgpu::TextureDimension::e1D:
case wgpu::TextureDimension::e3D:
UNREACHABLE();
}
}
gl.PixelStorei(GL_UNPACK_ROW_LENGTH, 0);
gl.PixelStorei(GL_UNPACK_IMAGE_HEIGHT, 0);
gl.BindBuffer(GL_PIXEL_UNPACK_BUFFER, 0);
break;
}
case Command::CopyTextureToBuffer: {
CopyTextureToBufferCmd* copy = mCommands.NextCommand<CopyTextureToBufferCmd>();
auto& src = copy->source;
auto& dst = copy->destination;
auto& copySize = copy->copySize;
Texture* texture = ToBackend(src.texture.Get());
Buffer* buffer = ToBackend(dst.buffer.Get());
const Format& formatInfo = texture->GetFormat();
const GLFormat& format = texture->GetGLFormat();
GLenum target = texture->GetGLTarget();
// TODO(jiawei.shao@intel.com): support texture-to-buffer copy with compressed
// texture formats.
if (formatInfo.isCompressed) {
UNREACHABLE();
}
buffer->EnsureDataInitializedAsDestination(copy);
ASSERT(texture->GetDimension() == wgpu::TextureDimension::e2D);
SubresourceRange subresources =
GetSubresourcesAffectedByCopy(src, copy->copySize);
texture->EnsureSubresourceContentInitialized(subresources);
// The only way to move data from a texture to a buffer in GL is via
// glReadPixels with a pack buffer. Create a temporary FBO for the copy.
gl.BindTexture(target, texture->GetHandle());
GLuint readFBO = 0;
gl.GenFramebuffers(1, &readFBO);
gl.BindFramebuffer(GL_READ_FRAMEBUFFER, readFBO);
const TexelBlockInfo& blockInfo = formatInfo.GetAspectInfo(src.aspect).block;
gl.BindBuffer(GL_PIXEL_PACK_BUFFER, buffer->GetHandle());
gl.PixelStorei(GL_PACK_IMAGE_HEIGHT, dst.rowsPerImage * blockInfo.height);
gl.PixelStorei(GL_PACK_ROW_LENGTH, dst.bytesPerRow / blockInfo.byteSize);
GLenum glAttachment;
GLenum glFormat;
GLenum glType;
switch (src.aspect) {
case Aspect::Color:
glAttachment = GL_COLOR_ATTACHMENT0;
glFormat = format.format;
glType = format.type;
break;
case Aspect::Depth:
glAttachment = GL_DEPTH_ATTACHMENT;
glFormat = GL_DEPTH_COMPONENT;
glType = GL_FLOAT;
break;
case Aspect::Stencil:
glAttachment = GL_STENCIL_ATTACHMENT;
glFormat = GL_STENCIL_INDEX;
glType = GL_UNSIGNED_BYTE;
break;
case Aspect::CombinedDepthStencil:
case Aspect::None:
UNREACHABLE();
}
uint8_t* offset =
reinterpret_cast<uint8_t*>(static_cast<uintptr_t>(dst.offset));
switch (texture->GetDimension()) {
case wgpu::TextureDimension::e2D: {
if (texture->GetArrayLayers() == 1) {
gl.FramebufferTexture2D(GL_READ_FRAMEBUFFER, glAttachment, target,
texture->GetHandle(), src.mipLevel);
gl.ReadPixels(src.origin.x, src.origin.y, copySize.width,
copySize.height, glFormat, glType, offset);
break;
}
const uint64_t bytesPerImage = dst.bytesPerRow * dst.rowsPerImage;
for (uint32_t layer = 0; layer < copySize.depth; ++layer) {
gl.FramebufferTextureLayer(GL_READ_FRAMEBUFFER, glAttachment,
texture->GetHandle(), src.mipLevel,
src.origin.z + layer);
gl.ReadPixels(src.origin.x, src.origin.y, copySize.width,
copySize.height, glFormat, glType, offset);
offset += bytesPerImage;
}
break;
}
case wgpu::TextureDimension::e1D:
case wgpu::TextureDimension::e3D:
UNREACHABLE();
}
gl.PixelStorei(GL_PACK_ROW_LENGTH, 0);
gl.PixelStorei(GL_PACK_IMAGE_HEIGHT, 0);
gl.BindBuffer(GL_PIXEL_PACK_BUFFER, 0);
gl.DeleteFramebuffers(1, &readFBO);
break;
}
case Command::CopyTextureToTexture: {
CopyTextureToTextureCmd* copy =
mCommands.NextCommand<CopyTextureToTextureCmd>();
auto& src = copy->source;
auto& dst = copy->destination;
// TODO(jiawei.shao@intel.com): add workaround for the case that imageExtentSrc
// is not equal to imageExtentDst. For example when copySize fits in the virtual
// size of the source image but does not fit in the one of the destination
// image.
Extent3D copySize = ComputeTextureCopyExtent(dst, copy->copySize);
Texture* srcTexture = ToBackend(src.texture.Get());
Texture* dstTexture = ToBackend(dst.texture.Get());
SubresourceRange srcRange = GetSubresourcesAffectedByCopy(src, copy->copySize);
SubresourceRange dstRange = GetSubresourcesAffectedByCopy(dst, copy->copySize);
srcTexture->EnsureSubresourceContentInitialized(srcRange);
if (IsCompleteSubresourceCopiedTo(dstTexture, copySize, dst.mipLevel)) {
dstTexture->SetIsSubresourceContentInitialized(true, dstRange);
} else {
dstTexture->EnsureSubresourceContentInitialized(dstRange);
}
if (gl.IsAtLeastGL(4, 3) || gl.IsAtLeastGLES(3, 2)) {
gl.CopyImageSubData(srcTexture->GetHandle(), srcTexture->GetGLTarget(),
src.mipLevel, src.origin.x, src.origin.y, src.origin.z,
dstTexture->GetHandle(), dstTexture->GetGLTarget(),
dst.mipLevel, dst.origin.x, dst.origin.y, dst.origin.z,
copySize.width, copySize.height, copy->copySize.depth);
} else {
GLuint readFBO = 0, drawFBO = 0;
gl.GenFramebuffers(1, &readFBO);
gl.GenFramebuffers(1, &drawFBO);
gl.BindFramebuffer(GL_READ_FRAMEBUFFER, readFBO);
gl.BindFramebuffer(GL_DRAW_FRAMEBUFFER, drawFBO);
gl.Disable(GL_SCISSOR_TEST);
for (uint32_t layer = 0; layer < copy->copySize.depth; ++layer) {
if (srcTexture->GetArrayLayers() == 1) {
gl.FramebufferTexture2D(GL_READ_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
srcTexture->GetGLTarget(),
srcTexture->GetHandle(), src.mipLevel);
} else {
gl.FramebufferTextureLayer(
GL_READ_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
srcTexture->GetHandle(), static_cast<GLint>(src.mipLevel),
static_cast<GLint>(src.origin.z + layer));
}
if (dstTexture->GetArrayLayers() == 1) {
gl.FramebufferTexture2D(GL_DRAW_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
dstTexture->GetGLTarget(),
dstTexture->GetHandle(), dst.mipLevel);
} else {
gl.FramebufferTextureLayer(
GL_DRAW_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
dstTexture->GetHandle(), static_cast<GLint>(dst.mipLevel),
static_cast<GLint>(dst.origin.z + layer));
}
gl.BlitFramebuffer(
src.origin.x, src.origin.y, src.origin.x + copySize.width,
src.origin.y + copySize.height, dst.origin.x, dst.origin.y,
dst.origin.x + copySize.width, dst.origin.y + copySize.height,
GL_COLOR_BUFFER_BIT, GL_NEAREST);
}
gl.Enable(GL_SCISSOR_TEST);
gl.DeleteFramebuffers(1, &readFBO);
gl.DeleteFramebuffers(1, &drawFBO);
}
break;
}
case Command::ResolveQuerySet: {
// TODO(hao.x.li@intel.com): Resolve non-precise occlusion query.
SkipCommand(&mCommands, type);
break;
}
case Command::WriteTimestamp: {
return DAWN_UNIMPLEMENTED_ERROR("WriteTimestamp unimplemented");
}
case Command::InsertDebugMarker:
case Command::PopDebugGroup:
case Command::PushDebugGroup: {
// Due to lack of linux driver support for GL_EXT_debug_marker
// extension these functions are skipped.
SkipCommand(&mCommands, type);
break;
}
default:
UNREACHABLE();
}
}
return {};
}
MaybeError CommandBuffer::ExecuteComputePass() {
const OpenGLFunctions& gl = ToBackend(GetDevice())->gl;
ComputePipeline* lastPipeline = nullptr;
BindGroupTracker bindGroupTracker = {};
Command type;
while (mCommands.NextCommandId(&type)) {
switch (type) {
case Command::EndComputePass: {
mCommands.NextCommand<EndComputePassCmd>();
return {};
}
case Command::Dispatch: {
DispatchCmd* dispatch = mCommands.NextCommand<DispatchCmd>();
bindGroupTracker.Apply(gl);
gl.DispatchCompute(dispatch->x, dispatch->y, dispatch->z);
// TODO(cwallez@chromium.org): add barriers to the API
gl.MemoryBarrier(GL_ALL_BARRIER_BITS);
break;
}
case Command::DispatchIndirect: {
DispatchIndirectCmd* dispatch = mCommands.NextCommand<DispatchIndirectCmd>();
bindGroupTracker.Apply(gl);
uint64_t indirectBufferOffset = dispatch->indirectOffset;
Buffer* indirectBuffer = ToBackend(dispatch->indirectBuffer.Get());
gl.BindBuffer(GL_DISPATCH_INDIRECT_BUFFER, indirectBuffer->GetHandle());
gl.DispatchComputeIndirect(static_cast<GLintptr>(indirectBufferOffset));
// TODO(cwallez@chromium.org): add barriers to the API
gl.MemoryBarrier(GL_ALL_BARRIER_BITS);
break;
}
case Command::SetComputePipeline: {
SetComputePipelineCmd* cmd = mCommands.NextCommand<SetComputePipelineCmd>();
lastPipeline = ToBackend(cmd->pipeline).Get();
lastPipeline->ApplyNow();
bindGroupTracker.OnSetPipeline(lastPipeline);
break;
}
case Command::SetBindGroup: {
SetBindGroupCmd* cmd = mCommands.NextCommand<SetBindGroupCmd>();
uint32_t* dynamicOffsets = nullptr;
if (cmd->dynamicOffsetCount > 0) {
dynamicOffsets = mCommands.NextData<uint32_t>(cmd->dynamicOffsetCount);
}
bindGroupTracker.OnSetBindGroup(cmd->index, cmd->group.Get(),
cmd->dynamicOffsetCount, dynamicOffsets);
break;
}
case Command::InsertDebugMarker:
case Command::PopDebugGroup:
case Command::PushDebugGroup: {
// Due to lack of linux driver support for GL_EXT_debug_marker
// extension these functions are skipped.
SkipCommand(&mCommands, type);
break;
}
case Command::WriteTimestamp: {
return DAWN_UNIMPLEMENTED_ERROR("WriteTimestamp unimplemented");
}
default:
UNREACHABLE();
}
}
// EndComputePass should have been called
UNREACHABLE();
}
MaybeError CommandBuffer::ExecuteRenderPass(BeginRenderPassCmd* renderPass) {
const OpenGLFunctions& gl = ToBackend(GetDevice())->gl;
GLuint fbo = 0;
// Create the framebuffer used for this render pass and calls the correct glDrawBuffers
{
// TODO(kainino@chromium.org): This is added to possibly work around an issue seen on
// Windows/Intel. It should break any feedback loop before the clears, even if there
// shouldn't be any negative effects from this. Investigate whether it's actually
// needed.
gl.BindFramebuffer(GL_READ_FRAMEBUFFER, 0);
// TODO(kainino@chromium.org): possible future optimization: create these framebuffers
// at Framebuffer build time (or maybe CommandBuffer build time) so they don't have to
// be created and destroyed at draw time.
gl.GenFramebuffers(1, &fbo);
gl.BindFramebuffer(GL_DRAW_FRAMEBUFFER, fbo);
// Mapping from attachmentSlot to GL framebuffer attachment points. Defaults to zero
// (GL_NONE).
ityp::array<ColorAttachmentIndex, GLenum, kMaxColorAttachments> drawBuffers = {};
// Construct GL framebuffer
ColorAttachmentIndex attachmentCount(uint8_t(0));
for (ColorAttachmentIndex i :
IterateBitSet(renderPass->attachmentState->GetColorAttachmentsMask())) {
TextureViewBase* textureView = renderPass->colorAttachments[i].view.Get();
GLuint texture = ToBackend(textureView->GetTexture())->GetHandle();
GLenum glAttachment = GL_COLOR_ATTACHMENT0 + static_cast<uint8_t>(i);
// Attach color buffers.
if (textureView->GetTexture()->GetArrayLayers() == 1) {
GLenum target = ToBackend(textureView->GetTexture())->GetGLTarget();
gl.FramebufferTexture2D(GL_DRAW_FRAMEBUFFER, glAttachment, target, texture,
textureView->GetBaseMipLevel());
} else {
gl.FramebufferTextureLayer(GL_DRAW_FRAMEBUFFER, glAttachment, texture,
textureView->GetBaseMipLevel(),
textureView->GetBaseArrayLayer());
}
drawBuffers[i] = glAttachment;
attachmentCount = i;
attachmentCount++;
}
gl.DrawBuffers(static_cast<uint8_t>(attachmentCount), drawBuffers.data());
if (renderPass->attachmentState->HasDepthStencilAttachment()) {
TextureViewBase* textureView = renderPass->depthStencilAttachment.view.Get();
GLuint texture = ToBackend(textureView->GetTexture())->GetHandle();
const Format& format = textureView->GetTexture()->GetFormat();
// Attach depth/stencil buffer.
GLenum glAttachment = 0;
// TODO(kainino@chromium.org): it may be valid to just always use
// GL_DEPTH_STENCIL_ATTACHMENT here.
if (format.aspects == (Aspect::Depth | Aspect::Stencil)) {
glAttachment = GL_DEPTH_STENCIL_ATTACHMENT;
} else if (format.aspects == Aspect::Depth) {
glAttachment = GL_DEPTH_ATTACHMENT;
} else if (format.aspects == Aspect::Stencil) {
glAttachment = GL_STENCIL_ATTACHMENT;
} else {
UNREACHABLE();
}
if (textureView->GetTexture()->GetArrayLayers() == 1) {
GLenum target = ToBackend(textureView->GetTexture())->GetGLTarget();
gl.FramebufferTexture2D(GL_DRAW_FRAMEBUFFER, glAttachment, target, texture,
textureView->GetBaseMipLevel());
} else {
gl.FramebufferTextureLayer(GL_DRAW_FRAMEBUFFER, glAttachment, texture,
textureView->GetBaseMipLevel(),
textureView->GetBaseArrayLayer());
}
}
}
ASSERT(gl.CheckFramebufferStatus(GL_DRAW_FRAMEBUFFER) == GL_FRAMEBUFFER_COMPLETE);
// Set defaults for dynamic state before executing clears and commands.
PersistentPipelineState persistentPipelineState;
persistentPipelineState.SetDefaultState(gl);
gl.BlendColor(0, 0, 0, 0);
gl.Viewport(0, 0, renderPass->width, renderPass->height);
gl.DepthRangef(0.0, 1.0);
gl.Scissor(0, 0, renderPass->width, renderPass->height);
// Clear framebuffer attachments as needed
{
for (ColorAttachmentIndex index :
IterateBitSet(renderPass->attachmentState->GetColorAttachmentsMask())) {
uint8_t i = static_cast<uint8_t>(index);
auto* attachmentInfo = &renderPass->colorAttachments[index];
// Load op - color
if (attachmentInfo->loadOp == wgpu::LoadOp::Clear) {
gl.ColorMask(true, true, true, true);
wgpu::TextureComponentType baseType =
attachmentInfo->view->GetFormat().GetAspectInfo(Aspect::Color).baseType;
switch (baseType) {
case wgpu::TextureComponentType::Float: {
const std::array<float, 4> appliedClearColor =
ConvertToFloatColor(attachmentInfo->clearColor);
gl.ClearBufferfv(GL_COLOR, i, appliedClearColor.data());
break;
}
case wgpu::TextureComponentType::Uint: {
const std::array<uint32_t, 4> appliedClearColor =
ConvertToUnsignedIntegerColor(attachmentInfo->clearColor);
gl.ClearBufferuiv(GL_COLOR, i, appliedClearColor.data());
break;
}
case wgpu::TextureComponentType::Sint: {
const std::array<int32_t, 4> appliedClearColor =
ConvertToSignedIntegerColor(attachmentInfo->clearColor);
gl.ClearBufferiv(GL_COLOR, i, appliedClearColor.data());
break;
}
case wgpu::TextureComponentType::DepthComparison:
UNREACHABLE();
}
}
if (attachmentInfo->storeOp == wgpu::StoreOp::Clear) {
// TODO(natlee@microsoft.com): call glDiscard to do optimization
}
}
if (renderPass->attachmentState->HasDepthStencilAttachment()) {
auto* attachmentInfo = &renderPass->depthStencilAttachment;
const Format& attachmentFormat = attachmentInfo->view->GetTexture()->GetFormat();
// Load op - depth/stencil
bool doDepthClear = attachmentFormat.HasDepth() &&
(attachmentInfo->depthLoadOp == wgpu::LoadOp::Clear);
bool doStencilClear = attachmentFormat.HasStencil() &&
(attachmentInfo->stencilLoadOp == wgpu::LoadOp::Clear);
if (doDepthClear) {
gl.DepthMask(GL_TRUE);
}
if (doStencilClear) {
gl.StencilMask(GetStencilMaskFromStencilFormat(attachmentFormat.format));
}
if (doDepthClear && doStencilClear) {
gl.ClearBufferfi(GL_DEPTH_STENCIL, 0, attachmentInfo->clearDepth,
attachmentInfo->clearStencil);
} else if (doDepthClear) {
gl.ClearBufferfv(GL_DEPTH, 0, &attachmentInfo->clearDepth);
} else if (doStencilClear) {
const GLint clearStencil = attachmentInfo->clearStencil;
gl.ClearBufferiv(GL_STENCIL, 0, &clearStencil);
}
}
}
RenderPipeline* lastPipeline = nullptr;
uint64_t indexBufferBaseOffset = 0;
GLenum indexBufferFormat;
uint32_t indexFormatSize;
VertexStateBufferBindingTracker vertexStateBufferBindingTracker;
BindGroupTracker bindGroupTracker = {};
auto DoRenderBundleCommand = [&](CommandIterator* iter, Command type) {
switch (type) {
case Command::Draw: {
DrawCmd* draw = iter->NextCommand<DrawCmd>();
vertexStateBufferBindingTracker.Apply(gl);
bindGroupTracker.Apply(gl);
if (draw->firstInstance > 0) {
gl.DrawArraysInstancedBaseInstance(
lastPipeline->GetGLPrimitiveTopology(), draw->firstVertex,
draw->vertexCount, draw->instanceCount, draw->firstInstance);
} else {
// This branch is only needed on OpenGL < 4.2
gl.DrawArraysInstanced(lastPipeline->GetGLPrimitiveTopology(),
draw->firstVertex, draw->vertexCount,
draw->instanceCount);
}
break;
}
case Command::DrawIndexed: {
DrawIndexedCmd* draw = iter->NextCommand<DrawIndexedCmd>();
vertexStateBufferBindingTracker.Apply(gl);
bindGroupTracker.Apply(gl);
if (draw->firstInstance > 0) {
gl.DrawElementsInstancedBaseVertexBaseInstance(
lastPipeline->GetGLPrimitiveTopology(), draw->indexCount,
indexBufferFormat,
reinterpret_cast<void*>(draw->firstIndex * indexFormatSize +
indexBufferBaseOffset),
draw->instanceCount, draw->baseVertex, draw->firstInstance);
} else {
// This branch is only needed on OpenGL < 4.2; ES < 3.2
if (draw->baseVertex != 0) {
gl.DrawElementsInstancedBaseVertex(
lastPipeline->GetGLPrimitiveTopology(), draw->indexCount,
indexBufferFormat,
reinterpret_cast<void*>(draw->firstIndex * indexFormatSize +
indexBufferBaseOffset),
draw->instanceCount, draw->baseVertex);
} else {
// This branch is only needed on OpenGL < 3.2; ES < 3.2
gl.DrawElementsInstanced(
lastPipeline->GetGLPrimitiveTopology(), draw->indexCount,
indexBufferFormat,
reinterpret_cast<void*>(draw->firstIndex * indexFormatSize +
indexBufferBaseOffset),
draw->instanceCount);
}
}
break;
}
case Command::DrawIndirect: {
DrawIndirectCmd* draw = iter->NextCommand<DrawIndirectCmd>();
vertexStateBufferBindingTracker.Apply(gl);
bindGroupTracker.Apply(gl);
uint64_t indirectBufferOffset = draw->indirectOffset;
Buffer* indirectBuffer = ToBackend(draw->indirectBuffer.Get());
gl.BindBuffer(GL_DRAW_INDIRECT_BUFFER, indirectBuffer->GetHandle());
gl.DrawArraysIndirect(
lastPipeline->GetGLPrimitiveTopology(),
reinterpret_cast<void*>(static_cast<intptr_t>(indirectBufferOffset)));
break;
}
case Command::DrawIndexedIndirect: {
DrawIndexedIndirectCmd* draw = iter->NextCommand<DrawIndexedIndirectCmd>();
vertexStateBufferBindingTracker.Apply(gl);
bindGroupTracker.Apply(gl);
uint64_t indirectBufferOffset = draw->indirectOffset;
Buffer* indirectBuffer = ToBackend(draw->indirectBuffer.Get());
gl.BindBuffer(GL_DRAW_INDIRECT_BUFFER, indirectBuffer->GetHandle());
gl.DrawElementsIndirect(
lastPipeline->GetGLPrimitiveTopology(), indexBufferFormat,
reinterpret_cast<void*>(static_cast<intptr_t>(indirectBufferOffset)));
break;
}
case Command::InsertDebugMarker:
case Command::PopDebugGroup:
case Command::PushDebugGroup: {
// Due to lack of linux driver support for GL_EXT_debug_marker
// extension these functions are skipped.
SkipCommand(iter, type);
break;
}
case Command::SetRenderPipeline: {
SetRenderPipelineCmd* cmd = iter->NextCommand<SetRenderPipelineCmd>();
lastPipeline = ToBackend(cmd->pipeline).Get();
lastPipeline->ApplyNow(persistentPipelineState);
vertexStateBufferBindingTracker.OnSetPipeline(lastPipeline);
bindGroupTracker.OnSetPipeline(lastPipeline);
break;
}
case Command::SetBindGroup: {
SetBindGroupCmd* cmd = iter->NextCommand<SetBindGroupCmd>();
uint32_t* dynamicOffsets = nullptr;
if (cmd->dynamicOffsetCount > 0) {
dynamicOffsets = iter->NextData<uint32_t>(cmd->dynamicOffsetCount);
}
bindGroupTracker.OnSetBindGroup(cmd->index, cmd->group.Get(),
cmd->dynamicOffsetCount, dynamicOffsets);
break;
}
case Command::SetIndexBuffer: {
SetIndexBufferCmd* cmd = iter->NextCommand<SetIndexBufferCmd>();
indexBufferBaseOffset = cmd->offset;
indexBufferFormat = IndexFormatType(cmd->format);
indexFormatSize = IndexFormatSize(cmd->format);
vertexStateBufferBindingTracker.OnSetIndexBuffer(cmd->buffer.Get());
break;
}
case Command::SetVertexBuffer: {
SetVertexBufferCmd* cmd = iter->NextCommand<SetVertexBufferCmd>();
vertexStateBufferBindingTracker.OnSetVertexBuffer(cmd->slot, cmd->buffer.Get(),
cmd->offset);
break;
}
default:
UNREACHABLE();
break;
}
};
Command type;
while (mCommands.NextCommandId(&type)) {
switch (type) {
case Command::EndRenderPass: {
mCommands.NextCommand<EndRenderPassCmd>();
if (renderPass->attachmentState->GetSampleCount() > 1) {
ResolveMultisampledRenderTargets(gl, renderPass);
}
gl.DeleteFramebuffers(1, &fbo);
return {};
}
case Command::SetStencilReference: {
SetStencilReferenceCmd* cmd = mCommands.NextCommand<SetStencilReferenceCmd>();
persistentPipelineState.SetStencilReference(gl, cmd->reference);
break;
}
case Command::SetViewport: {
SetViewportCmd* cmd = mCommands.NextCommand<SetViewportCmd>();
if (gl.IsAtLeastGL(4, 1)) {
gl.ViewportIndexedf(0, cmd->x, cmd->y, cmd->width, cmd->height);
} else {
// Floating-point viewport coords are unsupported on OpenGL ES, but
// truncation is ok because other APIs do not guarantee subpixel precision
// either.
gl.Viewport(static_cast<int>(cmd->x), static_cast<int>(cmd->y),
static_cast<int>(cmd->width), static_cast<int>(cmd->height));
}
gl.DepthRangef(cmd->minDepth, cmd->maxDepth);
break;
}
case Command::SetScissorRect: {
SetScissorRectCmd* cmd = mCommands.NextCommand<SetScissorRectCmd>();
gl.Scissor(cmd->x, cmd->y, cmd->width, cmd->height);
break;
}
case Command::SetBlendColor: {
SetBlendColorCmd* cmd = mCommands.NextCommand<SetBlendColorCmd>();
const std::array<float, 4> blendColor = ConvertToFloatColor(cmd->color);
gl.BlendColor(blendColor[0], blendColor[1], blendColor[2], blendColor[3]);
break;
}
case Command::ExecuteBundles: {
ExecuteBundlesCmd* cmd = mCommands.NextCommand<ExecuteBundlesCmd>();
auto bundles = mCommands.NextData<Ref<RenderBundleBase>>(cmd->count);
for (uint32_t i = 0; i < cmd->count; ++i) {
CommandIterator* iter = bundles[i]->GetCommands();
iter->Reset();
while (iter->NextCommandId(&type)) {
DoRenderBundleCommand(iter, type);
}
}
break;
}
case Command::BeginOcclusionQuery: {
return DAWN_UNIMPLEMENTED_ERROR("BeginOcclusionQuery unimplemented.");
}
case Command::EndOcclusionQuery: {
return DAWN_UNIMPLEMENTED_ERROR("EndOcclusionQuery unimplemented.");
}
case Command::WriteTimestamp:
return DAWN_UNIMPLEMENTED_ERROR("WriteTimestamp unimplemented");
default: {
DoRenderBundleCommand(&mCommands, type);
break;
}
}
}
// EndRenderPass should have been called
UNREACHABLE();
}
}} // namespace dawn_native::opengl
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