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Prevent runtimeInfo vertex state from leaking into wrong shaders

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This vertex state must only be present for the last pipeline stage that touches vertices, if it is present for other stages it could result in incorrect behaviour like performing TFB in the fragment shader or flipping device coordinates twice.
This commit is contained in:
Billy Laws 2022-08-04 20:04:40 +01:00
parent c52d3195cf
commit c966cd3b26
1 changed files with 34 additions and 4 deletions
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38
app/src/main/cpp/skyline/gpu/interconnect/graphics_context.h
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@ -1076,13 +1076,40 @@ namespace skyline::gpu::interconnect {
size_t bufferIndex{}, imageIndex{};
boost::container::static_vector<vk::ShaderModule, maxwell3d::PipelineStageCount> shaderModules;
boost::container::static_vector<vk::PipelineShaderStageCreateInfo, maxwell3d::PipelineStageCount> shaderStages;
// These parts of runtime info can only be set for the last stage that handles vertices in the current pipeline (either vertex or geometry) and should be unset for all others
struct StashedRuntimeInfo {
std::vector<::Shader::TransformFeedbackVarying> transformFeedbackVaryings;
std::optional<float> fixedStatePointSize;
bool convertDepthMode;
} stashedRuntimeInfo{
.fixedStatePointSize = runtimeInfo.fixed_state_point_size,
.convertDepthMode = runtimeInfo.convert_depth_mode,
};
auto stashRuntimeInfo{[&]() {
stashedRuntimeInfo.transformFeedbackVaryings = std::move(runtimeInfo.xfb_varyings);
runtimeInfo.xfb_varyings.clear();
runtimeInfo.fixed_state_point_size = {};
runtimeInfo.convert_depth_mode = false;
}};
auto unstashRuntimeInfo{[&]() {
runtimeInfo.xfb_varyings = std::move(stashedRuntimeInfo.transformFeedbackVaryings);
runtimeInfo.fixed_state_point_size = stashedRuntimeInfo.fixedStatePointSize;
runtimeInfo.convert_depth_mode = stashedRuntimeInfo.convertDepthMode;
}};
stashRuntimeInfo();
bool hasFullGeometryStage{pipelineStages[maxwell3d::PipelineStage::Geometry].enabled && !pipelineStages[maxwell3d::PipelineStage::Geometry].program->program.is_geometry_passthrough};
for (auto &pipelineStage : pipelineStages) {
if (!pipelineStage.enabled)
continue;
auto fixedPointSize{runtimeInfo.fixed_state_point_size};
if (fixedPointSize && pipelineStage.vkStage != vk::ShaderStageFlagBits::eVertex && pipelineStage.vkStage != vk::ShaderStageFlagBits::eGeometry)
runtimeInfo.fixed_state_point_size.reset(); // Only vertex/geometry stages are allowed to have a point size
bool needsUnstash{(pipelineStage.vkStage == vk::ShaderStageFlagBits::eGeometry && hasFullGeometryStage) ||
(pipelineStage.vkStage == vk::ShaderStageFlagBits::eVertex && !hasFullGeometryStage)};
if (needsUnstash)
unstashRuntimeInfo();
if (pipelineStage.needsRecompile || bindings.unified != pipelineStage.bindingBase || pipelineStage.previousStageStores.mask != runtimeInfo.previous_stage_stores.mask) {
pipelineStage.previousStageStores = runtimeInfo.previous_stage_stores;
@ -1091,7 +1118,8 @@ namespace skyline::gpu::interconnect {
pipelineStage.bindingLast = bindings.unified;
}
runtimeInfo.fixed_state_point_size = fixedPointSize;
if (needsUnstash)
stashRuntimeInfo();
auto &program{pipelineStage.program->program};
runtimeInfo.previous_stage_stores = program.info.stores;
@ -1236,6 +1264,8 @@ namespace skyline::gpu::interconnect {
});
}
unstashRuntimeInfo();
return {
std::move(shaderModules),
std::move(shaderStages),