From f086c82e1f80cae088bb22de9092598dc51979da Mon Sep 17 00:00:00 2001
From: ameerj <52414509+ameerj@users.noreply.github.com>
Date: Thu, 29 Jul 2021 13:27:01 -0400
Subject: gl_graphics_pipeline: Add downscale factor to shader uniforms

---
 src/video_core/renderer_opengl/gl_graphics_pipeline.cpp | 15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)

(limited to 'src/video_core')

diff --git a/src/video_core/renderer_opengl/gl_graphics_pipeline.cpp b/src/video_core/renderer_opengl/gl_graphics_pipeline.cpp
index 0bbda7951..92fda9af0 100644
--- a/src/video_core/renderer_opengl/gl_graphics_pipeline.cpp
+++ b/src/video_core/renderer_opengl/gl_graphics_pipeline.cpp
@@ -443,11 +443,24 @@ void GraphicsPipeline::ConfigureImpl(bool is_indexed) {
     if (!is_built.load(std::memory_order::relaxed)) {
         WaitForBuild();
     }
-    if (assembly_programs[0].handle != 0) {
+    const bool use_assembly{assembly_programs[0].handle != 0};
+    const bool is_rescaling{texture_cache.IsRescaling()};
+    const f32 config_down_factor{Settings::values.resolution_info.down_factor};
+    const f32 down_factor{is_rescaling ? config_down_factor : 1.0f};
+    if (use_assembly) {
         program_manager.BindAssemblyPrograms(assembly_programs, enabled_stages_mask);
     } else {
         program_manager.BindSourcePrograms(source_programs);
     }
+    for (size_t stage = 0; stage < source_programs.size(); ++stage) {
+        if (stage_infos[stage].uses_rescaling_uniform) {
+            if (use_assembly) {
+                glProgramEnvParameter4fARB(AssemblyStage(stage), 0, down_factor, 0.0f, 0.0f, 1.0f);
+            } else {
+                glProgramUniform1f(source_programs[stage].handle, 0, down_factor);
+            }
+        }
+    }
     const VideoCommon::ImageViewInOut* views_it{views.data()};
     GLsizei texture_binding = 0;
     GLsizei image_binding = 0;
-- 
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