From fd9e2d0073be84deff02a122d5db8d2917309a61 Mon Sep 17 00:00:00 2001
From: FernandoS27 <fsahmkow27@gmail.com>
Date: Mon, 15 Oct 2018 21:04:20 -0400
Subject: [PATCH] Implement 3D Textures

---
 src/video_core/engines/maxwell_3d.h                     | 5 ++++-
 src/video_core/renderer_opengl/gl_rasterizer_cache.cpp  | 2 ++
 src/video_core/renderer_opengl/gl_rasterizer_cache.h    | 3 +++
 src/video_core/renderer_opengl/gl_shader_decompiler.cpp | 1 +
 4 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/src/video_core/engines/maxwell_3d.h b/src/video_core/engines/maxwell_3d.h
index c8d1b6478b..c8af1c6b67 100644
--- a/src/video_core/engines/maxwell_3d.h
+++ b/src/video_core/engines/maxwell_3d.h
@@ -448,7 +448,10 @@ public:
                 BitField<8, 3, u32> block_depth;
                 BitField<12, 1, InvMemoryLayout> type;
             } memory_layout;
-            u32 array_mode;
+            union {
+                BitField<0, 16, u32> array_mode;
+                BitField<16, 1, u32> volume;
+            };
             u32 layer_stride;
             u32 base_layer;
             INSERT_PADDING_WORDS(7);
diff --git a/src/video_core/renderer_opengl/gl_rasterizer_cache.cpp b/src/video_core/renderer_opengl/gl_rasterizer_cache.cpp
index 1cb77aaf28..b20ef8faef 100644
--- a/src/video_core/renderer_opengl/gl_rasterizer_cache.cpp
+++ b/src/video_core/renderer_opengl/gl_rasterizer_cache.cpp
@@ -155,6 +155,7 @@ void SurfaceParams::InitCacheParameters(Tegra::GPUVAddr gpu_addr_) {
     params.rt.index = static_cast<u32>(index);
     params.rt.array_mode = config.array_mode;
     params.rt.layer_stride = config.layer_stride;
+    params.rt.volume = config.volume;
     params.rt.base_layer = config.base_layer;
 
     params.InitCacheParameters(config.Address());
@@ -1213,6 +1214,7 @@ Surface RasterizerCacheOpenGL::RecreateSurface(const Surface& old_surface,
     const bool is_blit{old_params.pixel_format == new_params.pixel_format};
 
     switch (new_params.target) {
+    case SurfaceParams::SurfaceTarget::Texture3D:
     case SurfaceParams::SurfaceTarget::Texture2D:
         if (is_blit) {
             BlitSurface(old_surface, new_surface, read_framebuffer.handle, draw_framebuffer.handle);
diff --git a/src/video_core/renderer_opengl/gl_rasterizer_cache.h b/src/video_core/renderer_opengl/gl_rasterizer_cache.h
index 7c1cb72d0f..0dd0d90a38 100644
--- a/src/video_core/renderer_opengl/gl_rasterizer_cache.h
+++ b/src/video_core/renderer_opengl/gl_rasterizer_cache.h
@@ -132,6 +132,8 @@ struct SurfaceParams {
         case Tegra::Texture::TextureType::Texture2D:
         case Tegra::Texture::TextureType::Texture2DNoMipmap:
             return SurfaceTarget::Texture2D;
+        case Tegra::Texture::TextureType::Texture3D:
+            return SurfaceTarget::Texture3D;
         case Tegra::Texture::TextureType::TextureCubemap:
             return SurfaceTarget::TextureCubemap;
         case Tegra::Texture::TextureType::Texture1DArray:
@@ -791,6 +793,7 @@ struct SurfaceParams {
     struct {
         u32 index;
         u32 array_mode;
+        u32 volume;
         u32 layer_stride;
         u32 base_layer;
     } rt;
diff --git a/src/video_core/renderer_opengl/gl_shader_decompiler.cpp b/src/video_core/renderer_opengl/gl_shader_decompiler.cpp
index 28dba00844..787de4befc 100644
--- a/src/video_core/renderer_opengl/gl_shader_decompiler.cpp
+++ b/src/video_core/renderer_opengl/gl_shader_decompiler.cpp
@@ -1142,6 +1142,7 @@ private:
         case Tegra::Shader::TextureType::Texture2D: {
             return 2;
         }
+        case Tegra::Shader::TextureType::Texture3D:
         case Tegra::Shader::TextureType::TextureCube: {
             return 3;
         }