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Added indirect compute dispatch.

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This commit is contained in:
Branimir Karadžić
2015-05-01 14:54:23 -07:00
parent d7e362f7dd
commit 3b66dfa5e8
8 changed files with 204 additions and 71 deletions
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73
src/renderer_gl.cpp
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@@ -4876,7 +4876,38 @@ namespace bgfx { namespace gl
viewState.setPredefined<1>(this, view, eye, program, _render, compute);
GL_CHECK(glDispatchCompute(compute.m_numX, compute.m_numY, compute.m_numZ) );
if (isValid(compute.m_indirectBuffer) )
{
const VertexBufferGL& vb = m_vertexBuffers[compute.m_indirectBuffer.idx];
if (currentState.m_indirectBuffer.idx != compute.m_indirectBuffer.idx)
{
currentState.m_indirectBuffer = compute.m_indirectBuffer;
GL_CHECK(glBindBuffer(GL_DISPATCH_INDIRECT_BUFFER, vb.m_id) );
}
uint32_t numDrawIndirect = UINT16_MAX == compute.m_numIndirect
? vb.m_size/BGFX_CONFIG_DRAW_INDIRECT_STRIDE
: compute.m_numIndirect
;
uintptr_t args = compute.m_startIndirect * BGFX_CONFIG_DRAW_INDIRECT_STRIDE;
for (uint32_t ii = 0; ii < numDrawIndirect; ++ii)
{
GL_CHECK(glDispatchComputeIndirect(args) );
args += BGFX_CONFIG_DRAW_INDIRECT_STRIDE;
}
}
else
{
if (isValid(currentState.m_indirectBuffer) )
{
currentState.m_indirectBuffer.idx = invalidHandle;
GL_CHECK(glBindBuffer(GL_DISPATCH_INDIRECT_BUFFER, 0) );
}
GL_CHECK(glDispatchCompute(compute.m_numX, compute.m_numY, compute.m_numZ) );
}
GL_CHECK(glMemoryBarrier(barrier) );
}
}
@@ -5412,12 +5443,12 @@ namespace bgfx { namespace gl
uint32_t numPrimsRendered = 0;
uint32_t numDrawIndirect = 0;
if (isValid(draw.m_drawIndirectBuffer) )
if (isValid(draw.m_indirectBuffer) )
{
const VertexBufferGL& vb = m_vertexBuffers[draw.m_drawIndirectBuffer.idx];
if (currentState.m_drawIndirectBuffer.idx != draw.m_drawIndirectBuffer.idx)
const VertexBufferGL& vb = m_vertexBuffers[draw.m_indirectBuffer.idx];
if (currentState.m_indirectBuffer.idx != draw.m_indirectBuffer.idx)
{
currentState.m_drawIndirectBuffer = draw.m_drawIndirectBuffer;
currentState.m_indirectBuffer = draw.m_indirectBuffer;
GL_CHECK(glBindBuffer(GL_DRAW_INDIRECT_BUFFER, vb.m_id) );
}
@@ -5430,26 +5461,38 @@ namespace bgfx { namespace gl
: GL_UNSIGNED_INT
;
const uint32_t commandSize = 5 * sizeof(uint32_t);
numDrawIndirect = UINT16_MAX == draw.m_numDrawIndirect ? vb.m_size/commandSize : draw.m_numDrawIndirect;
numDrawIndirect = UINT16_MAX == draw.m_numIndirect
? vb.m_size/BGFX_CONFIG_DRAW_INDIRECT_STRIDE
: draw.m_numIndirect
;
uintptr_t args = draw.m_startDrawIndirect * commandSize;
GL_CHECK(glMultiDrawElementsIndirect(prim.m_type, indexFormat, (void*)args, numDrawIndirect, commandSize) );
uintptr_t args = draw.m_startIndirect * BGFX_CONFIG_DRAW_INDIRECT_STRIDE;
GL_CHECK(glMultiDrawElementsIndirect(prim.m_type, indexFormat
, (void*)args
, numDrawIndirect
, BGFX_CONFIG_DRAW_INDIRECT_STRIDE
) );
}
else
{
const uint32_t commandSize = 4 * sizeof(uint32_t);
numDrawIndirect = UINT16_MAX == draw.m_numDrawIndirect ? vb.m_size/commandSize : draw.m_numDrawIndirect;
numDrawIndirect = UINT16_MAX == draw.m_numIndirect
? vb.m_size/BGFX_CONFIG_DRAW_INDIRECT_STRIDE
: draw.m_numIndirect
;
uintptr_t args = draw.m_startDrawIndirect * commandSize;
GL_CHECK(glMultiDrawArraysIndirect(prim.m_type, (void*)args, numDrawIndirect, commandSize) );
uintptr_t args = draw.m_startIndirect * BGFX_CONFIG_DRAW_INDIRECT_STRIDE;
GL_CHECK(glMultiDrawArraysIndirect(prim.m_type
, (void*)args
, numDrawIndirect
, BGFX_CONFIG_DRAW_INDIRECT_STRIDE
) );
}
}
else
{
if (isValid(currentState.m_drawIndirectBuffer) )
if (isValid(currentState.m_indirectBuffer) )
{
currentState.m_drawIndirectBuffer.idx = invalidHandle;
currentState.m_indirectBuffer.idx = invalidHandle;
GL_CHECK(glBindBuffer(GL_DRAW_INDIRECT_BUFFER, 0) );
}