From ed2e0e85c962c611af0aa6c929a4e56807b6563f Mon Sep 17 00:00:00 2001
From: bunnei <bunneidev@gmail.com>
Date: Fri, 14 Sep 2018 12:17:38 -0400
Subject: [PATCH] gl_rasterizer_cache: Add support for
 SurfaceTarget::TextureCubemap.

---
 .../renderer_opengl/gl_rasterizer_cache.cpp   | 35 ++++++++++++++++++-
 .../renderer_opengl/gl_rasterizer_cache.h     |  2 ++
 2 files changed, 36 insertions(+), 1 deletion(-)

diff --git a/src/video_core/renderer_opengl/gl_rasterizer_cache.cpp b/src/video_core/renderer_opengl/gl_rasterizer_cache.cpp
index 022561d43a..bd43303272 100644
--- a/src/video_core/renderer_opengl/gl_rasterizer_cache.cpp
+++ b/src/video_core/renderer_opengl/gl_rasterizer_cache.cpp
@@ -60,6 +60,9 @@ static VAddr TryGetCpuAddr(Tegra::GPUVAddr gpu_addr) {
     case SurfaceTarget::Texture2D:
         params.depth = 1;
         break;
+    case SurfaceTarget::TextureCubemap:
+        params.depth = config.tic.Depth() * 6;
+        break;
     case SurfaceTarget::Texture3D:
         params.depth = config.tic.Depth();
         break;
@@ -562,6 +565,7 @@ CachedSurface::CachedSurface(const SurfaceParams& params)
                            rect.GetWidth());
             break;
         case SurfaceParams::SurfaceTarget::Texture2D:
+        case SurfaceParams::SurfaceTarget::TextureCubemap:
             glTexStorage2D(SurfaceTargetToGL(params.target), 1, format_tuple.internal_format,
                            rect.GetWidth(), rect.GetHeight());
             break;
@@ -680,6 +684,7 @@ void CachedSurface::LoadGLBuffer() {
             // Pass impl. to the fallback code below
             break;
         case SurfaceParams::SurfaceTarget::Texture2DArray:
+        case SurfaceParams::SurfaceTarget::TextureCubemap:
             for (std::size_t index = 0; index < params.depth; ++index) {
                 const std::size_t offset{index * copy_size};
                 morton_to_gl_fns[static_cast<std::size_t>(params.pixel_format)](
@@ -724,7 +729,7 @@ void CachedSurface::UploadGLTexture(GLuint read_fb_handle, GLuint draw_fb_handle
     // Load data from memory to the surface
     const GLint x0 = static_cast<GLint>(rect.left);
     const GLint y0 = static_cast<GLint>(rect.bottom);
-    const std::size_t buffer_offset =
+    std::size_t buffer_offset =
         static_cast<std::size_t>(static_cast<std::size_t>(y0) * params.width +
                                  static_cast<std::size_t>(x0)) *
         GetGLBytesPerPixel(params.pixel_format);
@@ -763,6 +768,16 @@ void CachedSurface::UploadGLTexture(GLuint read_fb_handle, GLuint draw_fb_handle
                 static_cast<GLsizei>(params.depth), 0,
                 static_cast<GLsizei>(params.size_in_bytes_total), &gl_buffer[buffer_offset]);
             break;
+        case SurfaceParams::SurfaceTarget::TextureCubemap:
+            for (std::size_t face = 0; face < params.depth; ++face) {
+                glCompressedTexImage2D(static_cast<GLenum>(GL_TEXTURE_CUBE_MAP_POSITIVE_X + face),
+                                       0, tuple.internal_format, static_cast<GLsizei>(params.width),
+                                       static_cast<GLsizei>(params.height), 0,
+                                       static_cast<GLsizei>(params.size_in_bytes_2d),
+                                       &gl_buffer[buffer_offset]);
+                buffer_offset += params.size_in_bytes_2d;
+            }
+            break;
         default:
             LOG_CRITICAL(Render_OpenGL, "Unimplemented surface target={}",
                          static_cast<u32>(params.target));
@@ -793,6 +808,15 @@ void CachedSurface::UploadGLTexture(GLuint read_fb_handle, GLuint draw_fb_handle
                             static_cast<GLsizei>(rect.GetHeight()), params.depth, tuple.format,
                             tuple.type, &gl_buffer[buffer_offset]);
             break;
+        case SurfaceParams::SurfaceTarget::TextureCubemap:
+            for (std::size_t face = 0; face < params.depth; ++face) {
+                glTexSubImage2D(static_cast<GLenum>(GL_TEXTURE_CUBE_MAP_POSITIVE_X + face), 0, x0,
+                                y0, static_cast<GLsizei>(rect.GetWidth()),
+                                static_cast<GLsizei>(rect.GetHeight()), tuple.format, tuple.type,
+                                &gl_buffer[buffer_offset]);
+                buffer_offset += params.size_in_bytes_2d;
+            }
+            break;
         default:
             LOG_CRITICAL(Render_OpenGL, "Unimplemented surface target={}",
                          static_cast<u32>(params.target));
@@ -989,6 +1013,15 @@ Surface RasterizerCacheOpenGL::RecreateSurface(const Surface& old_surface,
                                     static_cast<GLsizei>(new_params.depth), dest_format.format,
                                     dest_format.type, nullptr);
                 break;
+            case SurfaceParams::SurfaceTarget::TextureCubemap:
+                for (std::size_t face = 0; face < new_params.depth; ++face) {
+                    glTextureSubImage3D(
+                        new_surface->Texture().handle, 0, 0, 0, static_cast<GLint>(face),
+                        static_cast<GLsizei>(dest_rect.GetWidth()),
+                        static_cast<GLsizei>(dest_rect.GetHeight()), static_cast<GLsizei>(1),
+                        dest_format.format, dest_format.type, nullptr);
+                }
+                break;
             default:
                 LOG_CRITICAL(Render_OpenGL, "Unimplemented surface target={}",
                              static_cast<u32>(new_params.target));
diff --git a/src/video_core/renderer_opengl/gl_rasterizer_cache.h b/src/video_core/renderer_opengl/gl_rasterizer_cache.h
index 2aed83bbce..e2fd0009e9 100644
--- a/src/video_core/renderer_opengl/gl_rasterizer_cache.h
+++ b/src/video_core/renderer_opengl/gl_rasterizer_cache.h
@@ -127,6 +127,8 @@ struct SurfaceParams {
         case Tegra::Texture::TextureType::Texture2D:
         case Tegra::Texture::TextureType::Texture2DNoMipmap:
             return SurfaceTarget::Texture2D;
+        case Tegra::Texture::TextureType::TextureCubemap:
+            return SurfaceTarget::TextureCubemap;
         case Tegra::Texture::TextureType::Texture1DArray:
             return SurfaceTarget::Texture1DArray;
         case Tegra::Texture::TextureType::Texture2DArray: