From e543320129950cceba99ec225314dd1f2ef0ff0b Mon Sep 17 00:00:00 2001
From: Fernando Sahmkow <fsahmkow27@gmail.com>
Date: Fri, 8 Feb 2019 19:28:01 -0400
Subject: [PATCH] Implement linear textures (#2089)

---
 .../renderer_opengl/gl_rasterizer_cache.cpp   | 42 ++++++++++++++++---
 .../renderer_opengl/gl_rasterizer_cache.h     |  2 +
 2 files changed, 39 insertions(+), 5 deletions(-)

diff --git a/src/video_core/renderer_opengl/gl_rasterizer_cache.cpp b/src/video_core/renderer_opengl/gl_rasterizer_cache.cpp
index b77768c79..126dcbbb3 100644
--- a/src/video_core/renderer_opengl/gl_rasterizer_cache.cpp
+++ b/src/video_core/renderer_opengl/gl_rasterizer_cache.cpp
@@ -125,6 +125,9 @@ std::size_t SurfaceParams::InnerMemorySize(bool force_gl, bool layer_only,
 
     params.width = Common::AlignUp(config.tic.Width(), GetCompressionFactor(params.pixel_format));
     params.height = Common::AlignUp(config.tic.Height(), GetCompressionFactor(params.pixel_format));
+    if (!params.is_tiled) {
+        params.pitch = config.tic.Pitch();
+    }
     params.unaligned_height = config.tic.Height();
     params.target = SurfaceTargetFromTextureType(config.tic.texture_type);
     params.identity = SurfaceClass::Uploaded;
@@ -191,7 +194,13 @@ std::size_t SurfaceParams::InnerMemorySize(bool force_gl, bool layer_only,
                              config.format == Tegra::RenderTargetFormat::RGBA8_SRGB;
     params.component_type = ComponentTypeFromRenderTarget(config.format);
     params.type = GetFormatType(params.pixel_format);
-    params.width = config.width;
+    if (params.is_tiled) {
+        params.width = config.width;
+    } else {
+        params.pitch = config.width;
+        const u32 bpp = params.GetFormatBpp() / 8;
+        params.width = params.pitch / bpp;
+    }
     params.height = config.height;
     params.unaligned_height = config.height;
     params.target = SurfaceTarget::Texture2D;
@@ -688,9 +697,20 @@ void CachedSurface::LoadGLBuffer() {
         for (u32 i = 0; i < params.max_mip_level; i++)
             SwizzleFunc(MortonSwizzleMode::MortonToLinear, params, gl_buffer[i], i);
     } else {
-        const auto texture_src_data{Memory::GetPointer(params.addr)};
-        const auto texture_src_data_end{texture_src_data + params.size_in_bytes_gl};
-        gl_buffer[0].assign(texture_src_data, texture_src_data_end);
+        const u32 bpp = params.GetFormatBpp() / 8;
+        const u32 copy_size = params.width * bpp;
+        if (params.pitch == copy_size) {
+            std::memcpy(gl_buffer[0].data(), Memory::GetPointer(params.addr),
+                        params.size_in_bytes_gl);
+        } else {
+            const u8* start = Memory::GetPointer(params.addr);
+            u8* write_to = gl_buffer[0].data();
+            for (u32 h = params.height; h > 0; h--) {
+                std::memcpy(write_to, start, copy_size);
+                start += params.pitch;
+                write_to += copy_size;
+            }
+        }
     }
     for (u32 i = 0; i < params.max_mip_level; i++) {
         ConvertFormatAsNeeded_LoadGLBuffer(gl_buffer[i], params.pixel_format, params.MipWidth(i),
@@ -727,7 +747,19 @@ void CachedSurface::FlushGLBuffer() {
 
         SwizzleFunc(MortonSwizzleMode::LinearToMorton, params, gl_buffer[0], 0);
     } else {
-        std::memcpy(Memory::GetPointer(GetAddr()), gl_buffer[0].data(), GetSizeInBytes());
+        const u32 bpp = params.GetFormatBpp() / 8;
+        const u32 copy_size = params.width * bpp;
+        if (params.pitch == copy_size) {
+            std::memcpy(Memory::GetPointer(params.addr), gl_buffer[0].data(), GetSizeInBytes());
+        } else {
+            u8* start = Memory::GetPointer(params.addr);
+            const u8* read_to = gl_buffer[0].data();
+            for (u32 h = params.height; h > 0; h--) {
+                std::memcpy(start, read_to, copy_size);
+                start += params.pitch;
+                read_to += copy_size;
+            }
+        }
     }
 }
 
diff --git a/src/video_core/renderer_opengl/gl_rasterizer_cache.h b/src/video_core/renderer_opengl/gl_rasterizer_cache.h
index 490b8252e..49ff99e2f 100644
--- a/src/video_core/renderer_opengl/gl_rasterizer_cache.h
+++ b/src/video_core/renderer_opengl/gl_rasterizer_cache.h
@@ -8,6 +8,7 @@
 #include <map>
 #include <memory>
 #include <string>
+#include <unordered_set>
 #include <vector>
 
 #include "common/alignment.h"
@@ -272,6 +273,7 @@ struct SurfaceParams {
     u32 height;
     u32 depth;
     u32 unaligned_height;
+    u32 pitch;
     SurfaceTarget target;
     SurfaceClass identity;
     u32 max_mip_level;