diff --git a/include/vkcv/PipelineConfig.hpp b/include/vkcv/PipelineConfig.hpp
index c17f04ee6b6bcf9ae011e2fc88d22c90f9e50809..0d29625aec6b7f607372e5f0c147ff32f229ad03 100644
--- a/include/vkcv/PipelineConfig.hpp
+++ b/include/vkcv/PipelineConfig.hpp
@@ -16,6 +16,7 @@ namespace vkcv {
enum class PrimitiveTopology{PointList, LineList, TriangleList };
enum class CullMode{ None, Front, Back };
+ enum class DepthTest { None, Less, LessEqual, Greater, GreatherEqual, Equal };
struct PipelineConfig {
ShaderProgram m_ShaderProgram;
@@ -25,11 +26,13 @@ namespace vkcv {
VertexLayout m_VertexLayout;
std::vector<vk::DescriptorSetLayout> m_DescriptorLayouts;
bool m_UseDynamicViewport;
- bool m_UseConservativeRasterization = false;
- PrimitiveTopology m_PrimitiveTopology = PrimitiveTopology::TriangleList;
- bool m_EnableDepthClamping = false;
- Multisampling m_multisampling = Multisampling::None;
- CullMode m_culling = CullMode::None;
+ bool m_UseConservativeRasterization = false;
+ PrimitiveTopology m_PrimitiveTopology = PrimitiveTopology::TriangleList;
+ bool m_EnableDepthClamping = false;
+ Multisampling m_multisampling = Multisampling::None;
+ CullMode m_culling = CullMode::None;
+ DepthTest m_depthTest = DepthTest::LessEqual;
+ bool m_depthWrite = true;
};
}
\ No newline at end of file
diff --git a/projects/voxelization/resources/shaders/depthPrepass.frag b/projects/voxelization/resources/shaders/depthPrepass.frag
new file mode 100644
index 0000000000000000000000000000000000000000..65592d2cfe161b8522de1a0c3e68fa1d6afa80be
--- /dev/null
+++ b/projects/voxelization/resources/shaders/depthPrepass.frag
@@ -0,0 +1,7 @@
+#version 450
+#extension GL_ARB_separate_shader_objects : enable
+#extension GL_GOOGLE_include_directive : enable
+
+void main() {
+
+}
\ No newline at end of file
diff --git a/projects/voxelization/resources/shaders/depthPrepass.vert b/projects/voxelization/resources/shaders/depthPrepass.vert
new file mode 100644
index 0000000000000000000000000000000000000000..d800c547368c4f2126c880534276a3be3cf336f5
--- /dev/null
+++ b/projects/voxelization/resources/shaders/depthPrepass.vert
@@ -0,0 +1,14 @@
+#version 450
+#extension GL_ARB_separate_shader_objects : enable
+
+#extension GL_GOOGLE_include_directive : enable
+
+layout(location = 0) in vec3 inPosition;
+
+layout( push_constant ) uniform constants{
+ mat4 mvp;
+};
+
+void main() {
+ gl_Position = mvp * vec4(inPosition, 1.0);
+}
\ No newline at end of file
diff --git a/projects/voxelization/src/main.cpp b/projects/voxelization/src/main.cpp
index 59b2d9fb3460ab6f1e9a8b59b9ce422b83c4a87c..fa2b921d9eb88a6f526617e95ec5e5f66bbe808b 100644
--- a/projects/voxelization/src/main.cpp
+++ b/projects/voxelization/src/main.cpp
@@ -118,11 +118,12 @@ int main(int argc, const char** argv) {
const vk::Format depthBufferFormat = vk::Format::eD32Sfloat;
const vkcv::AttachmentDescription depth_attachment(
- vkcv::AttachmentOperation::STORE,
- vkcv::AttachmentOperation::CLEAR,
+ vkcv::AttachmentOperation::DONT_CARE,
+ vkcv::AttachmentOperation::LOAD,
depthBufferFormat
);
-
+
+ // forward shading config
vkcv::PassConfig forwardPassDefinition({ color_attachment, depth_attachment }, msaa);
vkcv::PassHandle forwardPass = core.createPass(forwardPassDefinition);
@@ -149,6 +150,48 @@ int main(int argc, const char** argv) {
vkcv::DescriptorSetHandle forwardShadingDescriptorSet =
core.createDescriptorSet({ forwardProgram.getReflectedDescriptors()[0] });
+ // depth prepass config
+ vkcv::ShaderProgram depthPrepassShader;
+ compiler.compile(vkcv::ShaderStage::VERTEX, std::filesystem::path("resources/shaders/depthPrepass.vert"),
+ [&](vkcv::ShaderStage shaderStage, const std::filesystem::path& path) {
+ depthPrepassShader.addShader(shaderStage, path);
+ });
+ compiler.compile(vkcv::ShaderStage::FRAGMENT, std::filesystem::path("resources/shaders/depthPrepass.frag"),
+ [&](vkcv::ShaderStage shaderStage, const std::filesystem::path& path) {
+ depthPrepassShader.addShader(shaderStage, path);
+ });
+
+ const std::vector<vkcv::VertexAttachment> prepassVertexAttachments = depthPrepassShader.getVertexAttachments();
+
+ std::vector<vkcv::VertexBinding> prepassVertexBindings;
+ for (size_t i = 0; i < prepassVertexAttachments.size(); i++) {
+ prepassVertexBindings.push_back(vkcv::VertexBinding(i, { prepassVertexAttachments[i] }));
+ }
+ const vkcv::VertexLayout prepassVertexLayout(prepassVertexBindings);
+
+ const vkcv::AttachmentDescription prepassAttachment(
+ vkcv::AttachmentOperation::STORE,
+ vkcv::AttachmentOperation::CLEAR,
+ depthBufferFormat);
+
+ vkcv::PassConfig prepassPassDefinition({ prepassAttachment }, msaa);
+ vkcv::PassHandle prepassPass = core.createPass(prepassPassDefinition);
+
+ vkcv::PipelineConfig prepassPipelineConfig{
+ depthPrepassShader,
+ windowWidth,
+ windowHeight,
+ prepassPass,
+ vertexLayout,
+ {},
+ true};
+ prepassPipelineConfig.m_culling = vkcv::CullMode::Back;
+ prepassPipelineConfig.m_multisampling = msaa;
+ prepassPipelineConfig.m_depthTest = vkcv::DepthTest::LessEqual;
+
+ vkcv::PipelineHandle prepassPipeline = core.createGraphicsPipeline(prepassPipelineConfig);
+
+ // create descriptor sets
vkcv::SamplerHandle colorSampler = core.createSampler(
vkcv::SamplerFilterType::LINEAR,
vkcv::SamplerFilterType::LINEAR,
@@ -156,7 +199,6 @@ int main(int argc, const char** argv) {
vkcv::SamplerAddressMode::REPEAT
);
- // create descriptor sets
std::vector<vkcv::DescriptorSetHandle> materialDescriptorSets;
std::vector<vkcv::Image> sceneImages;
@@ -234,6 +276,8 @@ int main(int argc, const char** argv) {
};
forwardPipelineConfig.m_culling = vkcv::CullMode::Back;
forwardPipelineConfig.m_multisampling = msaa;
+ forwardPipelineConfig.m_depthTest = vkcv::DepthTest::Equal;
+ forwardPipelineConfig.m_depthWrite = false;
vkcv::PipelineHandle forwardPipeline = core.createGraphicsPipeline(forwardPipelineConfig);
@@ -312,11 +356,13 @@ int main(int argc, const char** argv) {
}
std::vector<vkcv::DrawcallInfo> drawcalls;
+ std::vector<vkcv::DrawcallInfo> prepassDrawcalls;
for (int i = 0; i < meshes.size(); i++) {
drawcalls.push_back(vkcv::DrawcallInfo(meshes[i], {
vkcv::DescriptorSetUsage(0, core.getDescriptorSet(forwardShadingDescriptorSet).vulkanHandle),
vkcv::DescriptorSetUsage(1, core.getDescriptorSet(perMeshDescriptorSets[i]).vulkanHandle) }));
+ prepassDrawcalls.push_back(vkcv::DrawcallInfo(meshes[i], {}));
}
vkcv::SamplerHandle voxelSampler = core.createSampler(
@@ -440,9 +486,26 @@ int main(int argc, const char** argv) {
modelMatrices,
perMeshDescriptorSets);
- // main pass
+ // depth prepass
const glm::mat4 viewProjectionCamera = cameraManager.getActiveCamera().getMVP();
+ std::vector<glm::mat4> prepassMatrices;
+ for (const auto& m : modelMatrices) {
+ prepassMatrices.push_back(viewProjectionCamera * m);
+ }
+
+ const vkcv::PushConstantData prepassPushConstantData((void*)prepassMatrices.data(), sizeof(glm::mat4));
+ const std::vector<vkcv::ImageHandle> prepassRenderTargets = { depthBuffer };
+
+ core.recordDrawcallsToCmdStream(
+ cmdStream,
+ prepassPass,
+ prepassPipeline,
+ prepassPushConstantData,
+ prepassDrawcalls,
+ prepassRenderTargets);
+
+ // main pass
std::vector<std::array<glm::mat4, 2>> mainPassMatrices;
for (const auto& m : modelMatrices) {
mainPassMatrices.push_back({ viewProjectionCamera * m, m });
diff --git a/src/vkcv/PipelineManager.cpp b/src/vkcv/PipelineManager.cpp
index 621abb0a5659d572b22ce11eb38adeb5e2297a4c..1b05269a34f90d2df0f218dd6155c2ba85164db7 100644
--- a/src/vkcv/PipelineManager.cpp
+++ b/src/vkcv/PipelineManager.cpp
@@ -51,6 +51,18 @@ namespace vkcv
}
}
+ vk::CompareOp depthTestToVkCompareOp(DepthTest depthTest) {
+ switch (depthTest) {
+ case(DepthTest::None): return vk::CompareOp::eAlways;
+ case(DepthTest::Less): return vk::CompareOp::eLess;
+ case(DepthTest::LessEqual): return vk::CompareOp::eLessOrEqual;
+ case(DepthTest::Greater): return vk::CompareOp::eGreater;
+ case(DepthTest::GreatherEqual): return vk::CompareOp::eGreaterOrEqual;
+ case(DepthTest::Equal): return vk::CompareOp::eEqual;
+ default: vkcv_log(vkcv::LogLevel::ERROR, "Unknown depth test enum"); return vk::CompareOp::eAlways;
+ }
+ }
+
PipelineHandle PipelineManager::createPipeline(const PipelineConfig &config, PassManager& passManager)
{
const vk::RenderPass &pass = passManager.getVkPass(config.m_PassHandle);
@@ -228,9 +240,9 @@ namespace vkcv
const vk::PipelineDepthStencilStateCreateInfo depthStencilCreateInfo(
vk::PipelineDepthStencilStateCreateFlags(),
- true,
- true,
- vk::CompareOp::eLessOrEqual,
+ config.m_depthTest != DepthTest::None,
+ config.m_depthWrite,
+ depthTestToVkCompareOp(config.m_depthTest),
false,
false,
{},