From ab808fe7cf66c143e9323bb51922989d5bb37752 Mon Sep 17 00:00:00 2001
From: ameerj <52414509+ameerj@users.noreply.github.com>
Date: Wed, 15 Sep 2021 21:30:35 -0400
Subject: gl_texture_cache: Migrate BGRCopyPass from util_shaders

The BGR copies no longer use shaders.
---
 .../renderer_opengl/gl_texture_cache.cpp           | 35 +++++++++++++++++++++-
 1 file changed, 34 insertions(+), 1 deletion(-)

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

diff --git a/src/video_core/renderer_opengl/gl_texture_cache.cpp b/src/video_core/renderer_opengl/gl_texture_cache.cpp
index 3ec78d866..54dae2c41 100644
--- a/src/video_core/renderer_opengl/gl_texture_cache.cpp
+++ b/src/video_core/renderer_opengl/gl_texture_cache.cpp
@@ -473,7 +473,7 @@ void TextureCacheRuntime::EmulateCopyImage(Image& dst, Image& src,
         ASSERT(src.info.type == ImageType::e3D);
         util_shaders.CopyBC4(dst, src, copies);
     } else if (IsPixelFormatBGR(dst.info.format) || IsPixelFormatBGR(src.info.format)) {
-        util_shaders.CopyBGR(dst, src, copies);
+        bgr_copy_pass.CopyBGR(dst, src, copies);
     } else {
         UNREACHABLE();
     }
@@ -1112,4 +1112,37 @@ Framebuffer::Framebuffer(TextureCacheRuntime& runtime, std::span<ImageView*, NUM
     framebuffer.handle = handle;
 }
 
+void BGRCopyPass::CopyBGR(Image& dst_image, Image& src_image,
+                          std::span<const VideoCommon::ImageCopy> copies) {
+    static constexpr VideoCommon::Offset3D zero_offset{0, 0, 0};
+    const u32 requested_pbo_size =
+        std::max(src_image.unswizzled_size_bytes, dst_image.unswizzled_size_bytes);
+
+    if (bgr_pbo_size < requested_pbo_size) {
+        bgr_pbo.Create();
+        bgr_pbo_size = requested_pbo_size;
+        glNamedBufferData(bgr_pbo.handle, bgr_pbo_size, nullptr, GL_STREAM_COPY);
+    }
+    for (const ImageCopy& copy : copies) {
+        ASSERT(copy.src_offset == zero_offset);
+        ASSERT(copy.dst_offset == zero_offset);
+
+        // Copy from source to PBO
+        glPixelStorei(GL_PACK_ALIGNMENT, 1);
+        glPixelStorei(GL_PACK_ROW_LENGTH, copy.extent.width);
+        glBindBuffer(GL_PIXEL_PACK_BUFFER, bgr_pbo.handle);
+        glGetTextureSubImage(src_image.Handle(), 0, 0, 0, 0, copy.extent.width, copy.extent.height,
+                             copy.src_subresource.num_layers, src_image.GlFormat(),
+                             src_image.GlType(), static_cast<GLsizei>(bgr_pbo_size), nullptr);
+
+        // Copy from PBO to destination in desired GL format
+        glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
+        glPixelStorei(GL_UNPACK_ROW_LENGTH, copy.extent.width);
+        glBindBuffer(GL_PIXEL_UNPACK_BUFFER, bgr_pbo.handle);
+        glTextureSubImage3D(dst_image.Handle(), 0, 0, 0, 0, copy.extent.width, copy.extent.height,
+                            copy.dst_subresource.num_layers, dst_image.GlFormat(),
+                            dst_image.GlType(), nullptr);
+    }
+}
+
 } // namespace OpenGL
-- 
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