From 2b58652f0897053d4da04deb586490220ab5a774 Mon Sep 17 00:00:00 2001
From: ReinUsesLisp <reinuseslisp@airmail.cc>
Date: Sat, 27 Jul 2019 19:40:10 -0300
Subject: maxwell_3d: Slow implementation of passed samples (query 21)

Implements GL_SAMPLES_PASSED by waiting immediately for queries.
---
 src/video_core/renderer_opengl/gl_rasterizer.cpp | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

(limited to 'src/video_core/renderer_opengl/gl_rasterizer.cpp')

diff --git a/src/video_core/renderer_opengl/gl_rasterizer.cpp b/src/video_core/renderer_opengl/gl_rasterizer.cpp
index b0eb14c8b..8d132732a 100644
--- a/src/video_core/renderer_opengl/gl_rasterizer.cpp
+++ b/src/video_core/renderer_opengl/gl_rasterizer.cpp
@@ -547,6 +547,9 @@ void RasterizerOpenGL::Draw(bool is_indexed, bool is_instanced) {
     MICROPROFILE_SCOPE(OpenGL_Drawing);
     auto& gpu = system.GPU().Maxwell3D();
 
+    const auto& regs = gpu.regs;
+    samples_passed.UpdateState(regs.samplecnt_enable);
+
     SyncRasterizeEnable(state);
     SyncColorMask();
     SyncFragmentColorClampState();
@@ -709,6 +712,27 @@ void RasterizerOpenGL::DispatchCompute(GPUVAddr code_addr) {
     glDispatchCompute(launch_desc.grid_dim_x, launch_desc.grid_dim_y, launch_desc.grid_dim_z);
 }
 
+void RasterizerOpenGL::ResetCounter(VideoCore::QueryType type) {
+    switch (type) {
+    case VideoCore::QueryType::SamplesPassed:
+        samples_passed.Reset();
+        break;
+    default:
+        UNIMPLEMENTED_MSG("type={}", static_cast<u32>(type));
+        break;
+    }
+}
+
+u64 RasterizerOpenGL::Query(VideoCore::QueryType type) {
+    switch (type) {
+    case VideoCore::QueryType::SamplesPassed:
+        return samples_passed.Query();
+    default:
+        UNIMPLEMENTED_MSG("type={}", static_cast<u32>(type));
+        return 1;
+    }
+}
+
 void RasterizerOpenGL::FlushAll() {}
 
 void RasterizerOpenGL::FlushRegion(CacheAddr addr, u64 size) {
-- 
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