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Reland "dawn_native: Indirect draw/dispatch"

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This is a reland of 7eb6be186b
Fixes casting issue on 32 bit machines

Original change's description:
> dawn_native: Indirect draw/dispatch
>
> Adds indirect draw and dispatch for all backends (without validation).
>
> Tests for opengl negative offset are skipped since there is no easy
> way to add the index buffer offset. Current idea is to use a compute
> shader to modify the indirect draw buffer.
>
> Change-Id: I1d3eec7c699b211423f4b911769cca17bfbcd045
> Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/7481
> Commit-Queue: Idan Raiter <idanr@google.com>
> Reviewed-by: Kai Ninomiya <kainino@chromium.org>

Change-Id: Id28c5658ee18ec5c030f721fb44d9f11ebe21ff9
Bug:dawn:54,chromium:972358
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/7961
Reviewed-by: Kai Ninomiya <kainino@chromium.org>
Commit-Queue: Idan Raiter <idanr@google.com>
This commit is contained in:
Idan Raiter
2019-06-10 20:56:27 +00:00
committed by Commit Bot service account
parent 9d4d3eac14
commit 05f7ad5ac8
21 changed files with 1002 additions and 1 deletions
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42
src/dawn_native/opengl/CommandBufferGL.cpp
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@@ -499,6 +499,18 @@ namespace dawn_native { namespace opengl {
glMemoryBarrier(GL_ALL_BARRIER_BITS);
} break;
case Command::DispatchIndirect: {
DispatchIndirectCmd* dispatch = mCommands.NextCommand<DispatchIndirectCmd>();
uint64_t indirectBufferOffset = dispatch->indirectOffset;
Buffer* indirectBuffer = ToBackend(dispatch->indirectBuffer.Get());
glBindBuffer(GL_DISPATCH_INDIRECT_BUFFER, indirectBuffer->GetHandle());
glDispatchComputeIndirect(static_cast<GLintptr>(indirectBufferOffset));
// TODO(cwallez@chromium.org): add barriers to the API
glMemoryBarrier(GL_ALL_BARRIER_BITS);
} break;
case Command::SetComputePipeline: {
SetComputePipelineCmd* cmd = mCommands.NextCommand<SetComputePipelineCmd>();
lastPipeline = ToBackend(cmd->pipeline).Get();
@@ -706,6 +718,36 @@ namespace dawn_native { namespace opengl {
}
} break;
case Command::DrawIndirect: {
DrawIndirectCmd* draw = mCommands.NextCommand<DrawIndirectCmd>();
inputBuffers.Apply();
uint64_t indirectBufferOffset = draw->indirectOffset;
Buffer* indirectBuffer = ToBackend(draw->indirectBuffer.Get());
glBindBuffer(GL_DRAW_INDIRECT_BUFFER, indirectBuffer->GetHandle());
glDrawArraysIndirect(
lastPipeline->GetGLPrimitiveTopology(),
reinterpret_cast<void*>(static_cast<intptr_t>(indirectBufferOffset)));
} break;
case Command::DrawIndexedIndirect: {
DrawIndexedIndirectCmd* draw = mCommands.NextCommand<DrawIndexedIndirectCmd>();
inputBuffers.Apply();
dawn::IndexFormat indexFormat =
lastPipeline->GetVertexInputDescriptor()->indexFormat;
GLenum formatType = IndexFormatType(indexFormat);
uint64_t indirectBufferOffset = draw->indirectOffset;
Buffer* indirectBuffer = ToBackend(draw->indirectBuffer.Get());
glBindBuffer(GL_DRAW_INDIRECT_BUFFER, indirectBuffer->GetHandle());
glDrawElementsIndirect(
lastPipeline->GetGLPrimitiveTopology(), formatType,
reinterpret_cast<void*>(static_cast<intptr_t>(indirectBufferOffset)));
} break;
case Command::InsertDebugMarker:
case Command::PopDebugGroup:
case Command::PushDebugGroup: {