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Generate quad for final composition pass in vertex shader

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This commit is contained in:
saschawillems 2017-01-07 20:40:35 +01:00
parent 89f82e328c
commit bfd0a2e0b4
3 changed files with 49 additions and 11 deletions
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29
deferred/deferred.cpp
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@ -536,6 +536,8 @@ public:
// Move viewport to display final composition in lower right corner
viewport.x = viewport.width * 0.5f;
viewport.y = viewport.height * 0.5f;
viewport.width = viewport.width * 0.5f;
viewport.height = viewport.height * 0.5f;
vkCmdSetViewport(drawCmdBuffers[i], 0, 1, &viewport);
}
@ -593,12 +595,13 @@ public:
}
}
createBuffer(
VK_CHECK_RESULT(vulkanDevice->createBuffer(
VK_BUFFER_USAGE_VERTEX_BUFFER_BIT,
VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT,
vertexBuffer.size() * sizeof(Vertex),
vertexBuffer.data(),
&meshes.quad.vertices.buf,
&meshes.quad.vertices.mem);
&meshes.quad.vertices.mem,
vertexBuffer.data()));
// Setup indices
std::vector<uint32_t> indexBuffer = { 0,1,2, 2,3,0 };
@ -612,12 +615,13 @@ public:
}
meshes.quad.indexCount = static_cast<uint32_t>(indexBuffer.size());
createBuffer(
VK_CHECK_RESULT(vulkanDevice->createBuffer(
VK_BUFFER_USAGE_INDEX_BUFFER_BIT,
VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT,
indexBuffer.size() * sizeof(uint32_t),
indexBuffer.data(),
&meshes.quad.indices.buf,
&meshes.quad.indices.mem);
&meshes.quad.indices.mem,
indexBuffer.data()));
}
void setupVertexDescriptions()
@ -911,19 +915,14 @@ public:
static_cast<uint32_t>(dynamicStateEnables.size()),
0);
// Final fullscreen pass pipeline
std::array<VkPipelineShaderStageCreateInfo, 2> shaderStages;
shaderStages[0] = loadShader(getAssetPath() + "shaders/deferred/deferred.vert.spv", VK_SHADER_STAGE_VERTEX_BIT);
shaderStages[1] = loadShader(getAssetPath() + "shaders/deferred/deferred.frag.spv", VK_SHADER_STAGE_FRAGMENT_BIT);
VkGraphicsPipelineCreateInfo pipelineCreateInfo =
vkTools::initializers::pipelineCreateInfo(
pipelineLayouts.deferred,
renderPass,
0);
pipelineCreateInfo.pVertexInputState = &vertices.inputState;
pipelineCreateInfo.pInputAssemblyState = &inputAssemblyState;
pipelineCreateInfo.pRasterizationState = &rasterizationState;
pipelineCreateInfo.pColorBlendState = &colorBlendState;
@ -934,9 +933,17 @@ public:
pipelineCreateInfo.stageCount = static_cast<uint32_t>(shaderStages.size());
pipelineCreateInfo.pStages = shaderStages.data();
// Final fullscreen composition pass pipeline
shaderStages[0] = loadShader(getAssetPath() + "shaders/deferred/deferred.vert.spv", VK_SHADER_STAGE_VERTEX_BIT);
shaderStages[1] = loadShader(getAssetPath() + "shaders/deferred/deferred.frag.spv", VK_SHADER_STAGE_FRAGMENT_BIT);
// Empty vertex input state, quads are generated by the vertex shader
VkPipelineVertexInputStateCreateInfo emptyInputState = vkTools::initializers::pipelineVertexInputStateCreateInfo();
pipelineCreateInfo.pVertexInputState = &emptyInputState;
pipelineCreateInfo.layout = pipelineLayouts.deferred;
VK_CHECK_RESULT(vkCreateGraphicsPipelines(device, pipelineCache, 1, &pipelineCreateInfo, nullptr, &pipelines.deferred));
// Debug display pipeline
pipelineCreateInfo.pVertexInputState = &vertices.inputState;
shaderStages[0] = loadShader(getAssetPath() + "shaders/deferred/debug.vert.spv", VK_SHADER_STAGE_VERTEX_BIT);
shaderStages[1] = loadShader(getAssetPath() + "shaders/deferred/debug.frag.spv", VK_SHADER_STAGE_FRAGMENT_BIT);
VK_CHECK_RESULT(vkCreateGraphicsPipelines(device, pipelineCache, 1, &pipelineCreateInfo, nullptr, &pipelines.debug));