From 2e5b5c2358caaf8dfd403a30924d49c31aa962a0 Mon Sep 17 00:00:00 2001
From: ReinUsesLisp <reinuseslisp@airmail.cc>
Date: Thu, 11 Jul 2019 20:09:53 -0300
Subject: gl_rasterizer: Split SetupTextures

---
 src/video_core/renderer_opengl/gl_rasterizer.cpp | 50 ++++++++++++++----------
 src/video_core/renderer_opengl/gl_rasterizer.h   | 10 ++++-
 2 files changed, 38 insertions(+), 22 deletions(-)

diff --git a/src/video_core/renderer_opengl/gl_rasterizer.cpp b/src/video_core/renderer_opengl/gl_rasterizer.cpp
index 01d89f47d..0f0902259 100644
--- a/src/video_core/renderer_opengl/gl_rasterizer.cpp
+++ b/src/video_core/renderer_opengl/gl_rasterizer.cpp
@@ -331,7 +331,7 @@ void RasterizerOpenGL::SetupShaders(GLenum primitive_mode) {
         const auto stage_enum = static_cast<Maxwell::ShaderStage>(stage);
         SetupDrawConstBuffers(stage_enum, shader);
         SetupDrawGlobalMemory(stage_enum, shader);
-        const auto texture_buffer_usage{SetupTextures(stage_enum, shader, base_bindings)};
+        const auto texture_buffer_usage{SetupDrawTextures(stage_enum, shader, base_bindings)};
 
         const ProgramVariant variant{base_bindings, primitive_mode, texture_buffer_usage};
         const auto [program_handle, next_bindings] = shader->GetProgramHandle(variant);
@@ -981,8 +981,9 @@ void RasterizerOpenGL::SetupGlobalMemory(const GLShader::GlobalMemoryEntry& entr
     bind_ssbo_pushbuffer.Push(ssbo, buffer_offset, static_cast<GLsizeiptr>(size));
 }
 
-TextureBufferUsage RasterizerOpenGL::SetupTextures(Maxwell::ShaderStage stage, const Shader& shader,
-                                                   BaseBindings base_bindings) {
+TextureBufferUsage RasterizerOpenGL::SetupDrawTextures(Maxwell::ShaderStage stage,
+                                                       const Shader& shader,
+                                                       BaseBindings base_bindings) {
     MICROPROFILE_SCOPE(OpenGL_Texture);
     const auto& gpu = system.GPU();
     const auto& maxwell3d = gpu.Maxwell3D();
@@ -1004,30 +1005,39 @@ TextureBufferUsage RasterizerOpenGL::SetupTextures(Maxwell::ShaderStage stage, c
         } else {
             texture = maxwell3d.GetStageTexture(stage, entry.GetOffset());
         }
-        const u32 current_bindpoint = base_bindings.sampler + bindpoint;
 
-        auto& unit{state.texture_units[current_bindpoint]};
-        unit.sampler = sampler_cache.GetSampler(texture.tsc);
-
-        if (const auto view{texture_cache.GetTextureSurface(texture, entry)}; view) {
-            if (view->GetSurfaceParams().IsBuffer()) {
-                // Record that this texture is a texture buffer.
-                texture_buffer_usage.set(bindpoint);
-            } else {
-                // Apply swizzle to textures that are not buffers.
-                view->ApplySwizzle(texture.tic.x_source, texture.tic.y_source, texture.tic.z_source,
-                                   texture.tic.w_source);
-            }
-            state.texture_units[current_bindpoint].texture = view->GetTexture();
-        } else {
-            // Can occur when texture addr is null or its memory is unmapped/invalid
-            unit.texture = 0;
+        if (SetupTexture(shader, base_bindings.sampler + bindpoint, texture, entry)) {
+            texture_buffer_usage.set(bindpoint);
         }
     }
 
     return texture_buffer_usage;
 }
 
+bool RasterizerOpenGL::SetupTexture(const Shader& shader, u32 binding,
+                                    const Tegra::Texture::FullTextureInfo& texture,
+                                    const GLShader::SamplerEntry& entry) {
+    auto& unit{state.texture_units[binding]};
+    unit.sampler = sampler_cache.GetSampler(texture.tsc);
+
+    const auto view = texture_cache.GetTextureSurface(texture, entry);
+    if (!view) {
+        // Can occur when texture addr is null or its memory is unmapped/invalid
+        unit.texture = 0;
+        return false;
+    }
+    unit.texture = view->GetTexture();
+
+    if (view->GetSurfaceParams().IsBuffer()) {
+        return true;
+    }
+
+    // Apply swizzle to textures that are not buffers.
+    view->ApplySwizzle(texture.tic.x_source, texture.tic.y_source, texture.tic.z_source,
+                       texture.tic.w_source);
+    return false;
+}
+
 void RasterizerOpenGL::SyncViewport(OpenGLState& current_state) {
     const auto& regs = system.GPU().Maxwell3D().regs;
     const bool geometry_shaders_enabled =
diff --git a/src/video_core/renderer_opengl/gl_rasterizer.h b/src/video_core/renderer_opengl/gl_rasterizer.h
index 9d20a4fbf..23ab7aff0 100644
--- a/src/video_core/renderer_opengl/gl_rasterizer.h
+++ b/src/video_core/renderer_opengl/gl_rasterizer.h
@@ -32,6 +32,7 @@
 #include "video_core/renderer_opengl/gl_state.h"
 #include "video_core/renderer_opengl/gl_texture_cache.h"
 #include "video_core/renderer_opengl/utils.h"
+#include "video_core/textures/texture.h"
 
 namespace Core {
 class System;
@@ -137,8 +138,13 @@ private:
 
     /// Configures the current textures to use for the draw command. Returns shaders texture buffer
     /// usage.
-    TextureBufferUsage SetupTextures(Tegra::Engines::Maxwell3D::Regs::ShaderStage stage,
-                                     const Shader& shader, BaseBindings base_bindings);
+    TextureBufferUsage SetupDrawTextures(Tegra::Engines::Maxwell3D::Regs::ShaderStage stage,
+                                         const Shader& shader, BaseBindings base_bindings);
+
+    /// Configures a texture. Returns true when the texture is a texture buffer.
+    bool SetupTexture(const Shader& shader, u32 binding,
+                      const Tegra::Texture::FullTextureInfo& texture,
+                      const GLShader::SamplerEntry& entry);
 
     /// Syncs the viewport and depth range to match the guest state
     void SyncViewport(OpenGLState& current_state);
-- 
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