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Merge pull request #7922 from samcake/red

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improve performance of Light volume pass
This commit is contained in:
Brad Hefta-Gaub 2016-05-20 09:33:55 -07:00
commit 95f7ea5609
1 changed files with 16 additions and 19 deletions
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35
libraries/render-utils/src/DeferredLightingEffect.cpp
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@ -149,17 +149,12 @@ void DeferredLightingEffect::prepare(RenderArgs* args) {
batch.setFramebuffer(deferredFbo);
// Clear Color, Depth and Stencil
// Clear Color, Depth and Stencil for deferred buffer
batch.clearFramebuffer(
gpu::Framebuffer::BUFFER_COLOR0 |
gpu::Framebuffer::BUFFER_COLOR0 | gpu::Framebuffer::BUFFER_COLOR1 | gpu::Framebuffer::BUFFER_COLOR2 |
gpu::Framebuffer::BUFFER_DEPTH |
gpu::Framebuffer::BUFFER_STENCIL,
vec4(vec3(0), 1), 1.0, 0.0, true);
// clear the normal and specular buffers
batch.clearColorFramebuffer(gpu::Framebuffer::BUFFER_COLOR1, glm::vec4(0.0f, 0.0f, 0.0f, 0.0f), true);
const float MAX_SPECULAR_EXPONENT = 128.0f;
batch.clearColorFramebuffer(gpu::Framebuffer::BUFFER_COLOR2, glm::vec4(0.0f, 0.0f, 0.0f, 1.0f / MAX_SPECULAR_EXPONENT), true);
vec4(vec3(0), 0), 1.0, 0.0, true);
});
}
@ -469,9 +464,10 @@ void DeferredLightingEffect::render(const render::RenderContextPointer& renderCo
batch.setInputBuffer(0, mesh->getVertexBuffer());
batch.setInputFormat(mesh->getVertexFormat());
auto& part = mesh->getPartBuffer().get<model::Mesh::Part>();
batch.drawIndexed(model::Mesh::topologyToPrimitive(part._topology), part._numIndices, part._startIndex);
{
auto& part = mesh->getPartBuffer().get<model::Mesh::Part>(0);
batch.drawIndexed(model::Mesh::topologyToPrimitive(part._topology), part._numIndices, part._startIndex);
}
}
}
}
@ -548,14 +544,12 @@ static void loadLightProgram(const char* vertSource, const char* fragSource, boo
// Stencil test all the light passes for objects pixels only, not the background
state->setStencilTest(true, 0xFF, gpu::State::StencilTest(0, 0xFF, gpu::NOT_EQUAL, gpu::State::STENCIL_OP_KEEP, gpu::State::STENCIL_OP_KEEP, gpu::State::STENCIL_OP_KEEP));
if (lightVolume) {
state->setCullMode(gpu::State::CULL_BACK);
// No need for z test since the depth buffer is not bound state->setDepthTest(true, false, gpu::LESS_EQUAL);
// TODO: We should bind the true depth buffer both as RT and texture for the depth test
state->setDepthTest(true, false, gpu::LESS_EQUAL);
// TODO: We should use DepthClamp and avoid changing geometry for inside /outside cases
state->setDepthClampEnable(true);
// additive blending
state->setBlendFunction(true, gpu::State::ONE, gpu::State::BLEND_OP_ADD, gpu::State::ONE);
@ -662,10 +656,13 @@ model::MeshPointer DeferredLightingEffect::getSpotLightMesh() {
_spotLightMesh->setIndexBuffer(gpu::BufferView(new gpu::Buffer(sizeof(unsigned short) * indices, (gpu::Byte*) indexData), gpu::Element::INDEX_UINT16));
delete[] indexData;
model::Mesh::Part part(0, indices, 0, model::Mesh::TRIANGLES);
//DEBUG: model::Mesh::Part part(0, indices, 0, model::Mesh::LINE_STRIP);
_spotLightMesh->setPartBuffer(gpu::BufferView(new gpu::Buffer(sizeof(part), (gpu::Byte*) &part), gpu::Element::PART_DRAWCALL));
std::vector<model::Mesh::Part> parts;
parts.push_back(model::Mesh::Part(0, indices, 0, model::Mesh::TRIANGLES));
parts.push_back(model::Mesh::Part(0, indices, 0, model::Mesh::LINE_STRIP)); // outline version
_spotLightMesh->setPartBuffer(gpu::BufferView(new gpu::Buffer(parts.size() * sizeof(model::Mesh::Part), (gpu::Byte*) parts.data()), gpu::Element::PART_DRAWCALL));
}
return _spotLightMesh;
}