[Perf] (MG_Backend/DirectVulkan): route full-coverage scissored glClear back to the deferred loadOp path, skip render-pass churn for no-op clears, and drop the per-clear heap Vector (extracted PrepareScissoredClear)

2026-09-11 13:48:30 +09:00 · 2026-07-16 21:18:00 -04:00
parent 37ef2cb600
commit 5bd8fa8c4e
2 changed files with 145 additions and 111 deletions
@@ -131,6 +131,14 @@ namespace MobileGL::MG_Backend::DirectVulkan {
        void ClearAttachmentsOnActiveRenderPass(VkCommandBuffer commandBuffer,
                                                const RenderPassEntry& compatibleRenderPassEntry);

+        enum class ScissoredClearPrep {
+            NotNeeded,  // scissor covers the whole target — take the deferred whole-surface path instead
+            NoOp,       // nothing to clear (degenerate target or empty scissor rect)
+            Ready,      // a render pass is active; record vkCmdClearAttachments with the returned rect
+        };
+        ScissoredClearPrep PrepareScissoredClear(const MG_State::GLState::FramebufferObject& framebuffer,
+                                                 VkClearRect& outClearRect);
+
        void Clear(GLbitfield mask);
        void ClearBufferfi(GLenum buffer, GLint drawbuffer, GLfloat depth, GLint stencil);
        void ClearBufferfv(GLenum buffer, GLint drawbuffer, const GLfloat* value);