Merge pull request #2369 from FernandoS27/mip-align

gl_backend: Align Pixel Storage

2 files changed, 12 insertions, 4 deletions

diff --git a/src/video_core/renderer_opengl/gl_rasterizer_cache.cpp b/src/video_core/renderer_opengl/gl_rasterizer_cache.cpp
index 7a3280620..5876145ef 100644
--- a/src/video_core/renderer_opengl/gl_rasterizer_cache.cpp
+++ b/src/video_core/renderer_opengl/gl_rasterizer_cache.cpp
@@ -661,8 +661,8 @@ void CachedSurface::FlushGLBuffer() {
     gl_buffer[0].resize(GetSizeInBytes());
 
     const FormatTuple& tuple = GetFormatTuple(params.pixel_format, params.component_type);
-    // Ensure no bad interactions with GL_UNPACK_ALIGNMENT
-    ASSERT(params.width * GetBytesPerPixel(params.pixel_format) % 4 == 0);
+    const u32 align = std::clamp(params.RowAlign(0), 1U, 8U);
+    glPixelStorei(GL_PACK_ALIGNMENT, align);
     glPixelStorei(GL_PACK_ROW_LENGTH, static_cast<GLint>(params.width));
     ASSERT(!tuple.compressed);
     glBindBuffer(GL_PIXEL_PACK_BUFFER, 0);
@@ -707,8 +707,8 @@ void CachedSurface::UploadGLMipmapTexture(u32 mip_map, GLuint read_fb_handle,
 
     const FormatTuple& tuple = GetFormatTuple(params.pixel_format, params.component_type);
 
-    // Ensure no bad interactions with GL_UNPACK_ALIGNMENT
-    ASSERT(params.MipWidth(mip_map) * GetBytesPerPixel(params.pixel_format) % 4 == 0);
+    const u32 align = std::clamp(params.RowAlign(mip_map), 1U, 8U);
+    glPixelStorei(GL_UNPACK_ALIGNMENT, align);
     glPixelStorei(GL_UNPACK_ROW_LENGTH, static_cast<GLint>(params.MipWidth(mip_map)));
 
     const auto image_size = static_cast<GLsizei>(params.GetMipmapSizeGL(mip_map, false));
diff --git a/src/video_core/renderer_opengl/gl_rasterizer_cache.h b/src/video_core/renderer_opengl/gl_rasterizer_cache.h
index ad4fd3ad2..db280dbb3 100644
--- a/src/video_core/renderer_opengl/gl_rasterizer_cache.h
+++ b/src/video_core/renderer_opengl/gl_rasterizer_cache.h
@@ -11,6 +11,7 @@
 #include <vector>
 
 #include "common/alignment.h"
+#include "common/bit_util.h"
 #include "common/common_types.h"
 #include "common/hash.h"
 #include "common/math_util.h"
@@ -205,6 +206,13 @@ struct SurfaceParams {
         return bd;
     }
 
+    u32 RowAlign(u32 mip_level) const {
+        const u32 m_width = MipWidth(mip_level);
+        const u32 bytes_per_pixel = GetBytesPerPixel(pixel_format);
+        const u32 l2 = Common::CountTrailingZeroes32(m_width * bytes_per_pixel);
+        return (1U << l2);
+    }
+
     /// Creates SurfaceParams from a texture configuration
     static SurfaceParams CreateForTexture(const Tegra::Texture::FullTextureInfo& config,
                                           const GLShader::SamplerEntry& entry);