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Implement readonly storage buffer on OpenGL backend

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Note that storage buffer and readonly storage buffer may not be
supported in vertex shader on OpenGL backend. In OpenGL Spec 4.6,
the minimum value of MAX_VERTEX_SHADER_STORAGE_BLOCKS is 0.

BUG=dawn:180, dawn:284

Change-Id: Ib637a61e4eee0a0996c0da33f492e075fd94e1e7
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/14380
Commit-Queue: Yunchao He <yunchao.he@intel.com>
Reviewed-by: Austin Eng <enga@chromium.org>
This commit is contained in:
Yunchao He 2019-12-09 23:59:28 +00:00 committed by Commit Bot service account
parent ef8dee90a7
commit 56b12422da
4 changed files with 6 additions and 5 deletions
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4
src/dawn_native/opengl/CommandBufferGL.cpp
View File

@ -288,7 +288,8 @@ namespace dawn_native { namespace opengl {
}
} break;
case wgpu::BindingType::StorageBuffer: {
case wgpu::BindingType::StorageBuffer:
case wgpu::BindingType::ReadonlyStorageBuffer: {
BufferBinding binding = group->GetBindingAsBufferBinding(bindingIndex);
GLuint buffer = ToBackend(binding.buffer)->GetHandle();
GLuint ssboIndex = indices[bindingIndex];
@ -304,7 +305,6 @@ namespace dawn_native { namespace opengl {
} break;
case wgpu::BindingType::StorageTexture:
case wgpu::BindingType::ReadonlyStorageBuffer:
UNREACHABLE();
break;

4
src/dawn_native/opengl/PipelineGL.cpp
View File

@ -123,7 +123,8 @@ namespace dawn_native { namespace opengl {
}
} break;
case wgpu::BindingType::StorageBuffer: {
case wgpu::BindingType::StorageBuffer:
case wgpu::BindingType::ReadonlyStorageBuffer: {
GLuint location = gl.GetProgramResourceIndex(
mProgram, GL_SHADER_STORAGE_BLOCK, name.c_str());
if (location != GL_INVALID_INDEX) {
@ -139,7 +140,6 @@ namespace dawn_native { namespace opengl {
break;
case wgpu::BindingType::StorageTexture:
case wgpu::BindingType::ReadonlyStorageBuffer:
UNREACHABLE();
break;

2
src/dawn_native/opengl/PipelineLayoutGL.cpp
View File

@ -50,12 +50,12 @@ namespace dawn_native { namespace opengl {
break;
case wgpu::BindingType::StorageBuffer:
case wgpu::BindingType::ReadonlyStorageBuffer:
mIndexInfo[group][binding] = ssboIndex;
ssboIndex++;
break;
case wgpu::BindingType::StorageTexture:
case wgpu::BindingType::ReadonlyStorageBuffer:
UNREACHABLE();
break;

1
src/tests/end2end/GpuMemorySynchronizationTests.cpp
View File

@ -691,4 +691,5 @@ TEST_P(MultipleWriteThenMultipleReadTests, OneBuffer) {
DAWN_INSTANTIATE_TEST(MultipleWriteThenMultipleReadTests,
D3D12Backend,
MetalBackend,
OpenGLBackend,
VulkanBackend);