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-rw-r--r--src/video_core/renderer_vulkan/vk_rasterizer.cpp60
-rw-r--r--src/video_core/renderer_vulkan/vk_rasterizer.h5
2 files changed, 58 insertions, 7 deletions
diff --git a/src/video_core/renderer_vulkan/vk_rasterizer.cpp b/src/video_core/renderer_vulkan/vk_rasterizer.cpp
index 184b2238a..a5fd68358 100644
--- a/src/video_core/renderer_vulkan/vk_rasterizer.cpp
+++ b/src/video_core/renderer_vulkan/vk_rasterizer.cpp
@@ -143,6 +143,49 @@ Tegra::Texture::FullTextureInfo GetTextureInfo(const Engine& engine, const Entry
}
}
+/// @brief Determine if an attachment to be updated has to preserve contents
+/// @param is_clear True when a clear is being executed
+/// @param regs 3D registers
+/// @return True when the contents have to be preserved
+bool HasToPreserveColorContents(bool is_clear, const Maxwell& regs) {
+ if (!is_clear) {
+ return true;
+ }
+ // First we have to make sure all clear masks are enabled.
+ if (!regs.clear_buffers.R || !regs.clear_buffers.G || !regs.clear_buffers.B ||
+ !regs.clear_buffers.A) {
+ return true;
+ }
+ // If scissors are disabled, the whole screen is cleared
+ if (!regs.clear_flags.scissor) {
+ return false;
+ }
+ // Then we have to confirm scissor testing clears the whole image
+ const std::size_t index = regs.clear_buffers.RT;
+ const auto& scissor = regs.scissor_test[0];
+ return scissor.min_x > 0 || scissor.min_y > 0 || scissor.max_x < regs.rt[index].width ||
+ scissor.max_y < regs.rt[index].height;
+}
+
+/// @brief Determine if an attachment to be updated has to preserve contents
+/// @param is_clear True when a clear is being executed
+/// @param regs 3D registers
+/// @return True when the contents have to be preserved
+bool HasToPreserveDepthContents(bool is_clear, const Maxwell& regs) {
+ // If we are not clearing, the contents have to be preserved
+ if (!is_clear) {
+ return true;
+ }
+ // For depth stencil clears we only have to confirm scissor test covers the whole image
+ if (!regs.clear_flags.scissor) {
+ return false;
+ }
+ // Make sure the clear cover the whole image
+ const auto& scissor = regs.scissor_test[0];
+ return scissor.min_x > 0 || scissor.min_y > 0 || scissor.max_x < regs.zeta_width ||
+ scissor.max_y < regs.zeta_height;
+}
+
} // Anonymous namespace
class BufferBindings final {
@@ -344,7 +387,7 @@ void RasterizerVulkan::Draw(bool is_indexed, bool is_instanced) {
buffer_cache.Unmap();
- const Texceptions texceptions = UpdateAttachments();
+ const Texceptions texceptions = UpdateAttachments(false);
SetupImageTransitions(texceptions, color_attachments, zeta_attachment);
key.renderpass_params = GetRenderPassParams(texceptions);
@@ -400,7 +443,7 @@ void RasterizerVulkan::Clear() {
return;
}
- [[maybe_unused]] const auto texceptions = UpdateAttachments();
+ [[maybe_unused]] const auto texceptions = UpdateAttachments(true);
DEBUG_ASSERT(texceptions.none());
SetupImageTransitions(0, color_attachments, zeta_attachment);
@@ -677,9 +720,12 @@ void RasterizerVulkan::FlushWork() {
draw_counter = 0;
}
-RasterizerVulkan::Texceptions RasterizerVulkan::UpdateAttachments() {
+RasterizerVulkan::Texceptions RasterizerVulkan::UpdateAttachments(bool is_clear) {
MICROPROFILE_SCOPE(Vulkan_RenderTargets);
- auto& dirty = system.GPU().Maxwell3D().dirty.flags;
+ auto& maxwell3d = system.GPU().Maxwell3D();
+ auto& dirty = maxwell3d.dirty.flags;
+ auto& regs = maxwell3d.regs;
+
const bool update_rendertargets = dirty[VideoCommon::Dirty::RenderTargets];
dirty[VideoCommon::Dirty::RenderTargets] = false;
@@ -688,7 +734,8 @@ RasterizerVulkan::Texceptions RasterizerVulkan::UpdateAttachments() {
Texceptions texceptions;
for (std::size_t rt = 0; rt < Maxwell::NumRenderTargets; ++rt) {
if (update_rendertargets) {
- color_attachments[rt] = texture_cache.GetColorBufferSurface(rt, true);
+ const bool preserve_contents = HasToPreserveColorContents(is_clear, regs);
+ color_attachments[rt] = texture_cache.GetColorBufferSurface(rt, preserve_contents);
}
if (color_attachments[rt] && WalkAttachmentOverlaps(*color_attachments[rt])) {
texceptions[rt] = true;
@@ -696,7 +743,8 @@ RasterizerVulkan::Texceptions RasterizerVulkan::UpdateAttachments() {
}
if (update_rendertargets) {
- zeta_attachment = texture_cache.GetDepthBufferSurface(true);
+ const bool preserve_contents = HasToPreserveDepthContents(is_clear, regs);
+ zeta_attachment = texture_cache.GetDepthBufferSurface(preserve_contents);
}
if (zeta_attachment && WalkAttachmentOverlaps(*zeta_attachment)) {
texceptions[ZETA_TEXCEPTION_INDEX] = true;
diff --git a/src/video_core/renderer_vulkan/vk_rasterizer.h b/src/video_core/renderer_vulkan/vk_rasterizer.h
index c8c187606..83e00e7e9 100644
--- a/src/video_core/renderer_vulkan/vk_rasterizer.h
+++ b/src/video_core/renderer_vulkan/vk_rasterizer.h
@@ -159,7 +159,10 @@ private:
void FlushWork();
- Texceptions UpdateAttachments();
+ /// @brief Updates the currently bound attachments
+ /// @param is_clear True when the framebuffer is updated as a clear
+ /// @return Bitfield of attachments being used as sampled textures
+ Texceptions UpdateAttachments(bool is_clear);
std::tuple<VkFramebuffer, VkExtent2D> ConfigureFramebuffers(VkRenderPass renderpass);