Moved texture scaling to separate file

GPU/GLES/TextureCache.cpp

@@ -27,7 +27,6 @@
 #include "Core/Config.h"
 
 #include "native/ext/cityhash/city.h"
-#include "ext/xbrz/xbrz.h"
 
 // If a texture hasn't been seen for this many frames, get rid of it.
 #define TEXTURE_KILL_AGE 200
@@ -1206,80 +1205,12 @@ void TextureCache::LoadTextureLevel(TexCacheEntry &entry, int level) {
 	// INFO_LOG(G3D, "Creating texture level %i/%i from %08x: %i x %i (stride: %i). fmt: %i", level, entry.maxLevel, texaddr, w, h, bufw, entry.format);
 
 	u32* pixelData = (u32*)finalBuf;
-	ScaleTexture(pixelData, dstFmt, w, h);
+	scaler.Scale(pixelData, dstFmt, w, h);
 
 	GLuint components = dstFmt == GL_UNSIGNED_SHORT_5_6_5 ? GL_RGB : GL_RGBA;
 	glTexImage2D(GL_TEXTURE_2D, level, components, w, h, 0, components, dstFmt, pixelData);
 }
 
-void TextureCache::ScaleTexture(u32* &data, GLenum &dstFmt, int &width, int &height) {
-	if(g_Config.iXBRZTexScalingLevel > 1) {
-		int factor = g_Config.iXBRZTexScalingLevel;
-
-		// I tried to reuse the existing tmpTexBuf initially, but that's not a good idea as data could already be stored in it
-		// depending on the factor and texture sizes, these can be pretty large (25 MB for a 512 by 512 texture with scaling factor 5)
-		tmpTexBufScalingInput.resize(width*height); // used to store the input image image if it needs to be reformatted
-		tmpTexBufScalingOutput.resize(width*height*factor*factor); // used to store the upscaled image
-		u32 *xbrzInputBuf = tmpTexBufScalingInput.data();
-		u32 *xbrzBuf = tmpTexBufScalingOutput.data();
-
-		// convert texture to correct format for xBRZ
-		switch(dstFmt) {
-		case GL_UNSIGNED_BYTE:
-			xbrzInputBuf = data; // already fine
-			break;
-
-		case GL_UNSIGNED_SHORT_4_4_4_4:
-			for(int y = 0; y < height; ++y) {
-				for(int x = 0; x < width; ++x) {
-					u32 val = ((u16*)data)[y*width + x];
-					u32 r = ((val>>12) & 0xF) * 17;
-					u32 g = ((val>> 8) & 0xF) * 17;
-					u32 b = ((val>> 4) & 0xF) * 17;
-					u32 a = ((val>> 0) & 0xF) * 17;
-					xbrzInputBuf[y*width + x] = (a << 24) | (b << 16) | (g << 8) | r;
-				}
-			}
-			break;
-
-		case GL_UNSIGNED_SHORT_5_6_5:
-			for(int y = 0; y < height; ++y) {
-				for(int x = 0; x < width; ++x) {
-					u32 val = ((u16*)data)[y*width + x];
-					u32 r = ((val>>11) & 0x1F) * 8;
-					u32 g = ((val>> 5) & 0x3F) * 4;
-					u32 b = ((val    ) & 0x1F) * 8;
-					xbrzInputBuf[y*width + x] = (0xFF << 24) | (b << 16) | (g << 8) | r;
-				}
-			}
-			break;
-
-		case GL_UNSIGNED_SHORT_5_5_5_1:
-			for(int y = 0; y < height; ++y) {
-				for(int x = 0; x < width; ++x) {
-					u32 val = ((u16*)data)[y*width + x];
-					u32 r = ((val>>11) & 0x1F) * 8;
-					u32 g = ((val>> 6) & 0x1F) * 8;
-					u32 b = ((val>> 1) & 0x1F) * 8;
-					u32 a = (val & 0x1) * 255;
-					xbrzInputBuf[y*width + x] = (a << 24) | (b << 16) | (g << 8) | r;
-				}
-			}
-			break;
-
-		default:
-			ERROR_LOG(G3D, "iXBRZTexScaling: unsupported texture format");
-		}
-
-		// scale and update values accordingly
-		xbrz::scale(factor, xbrzInputBuf, xbrzBuf, width, height);
-		data = xbrzBuf;
-		dstFmt = GL_UNSIGNED_BYTE;
-		width *= factor;
-		height *= factor;
-	}
-}
-
 bool TextureCache::DecodeTexture(u8* output, GPUgstate state)
 {
 	GPUgstate oldState = gstate;

GPU/GLES/TextureCache.h

@@ -18,9 +18,9 @@
 #pragma once
 
 #include "../Globals.h"
-#include "Common/MemoryUtil.h"
 #include "gfx_es2/fbo.h"
 #include "GPU/GPUState.h"
+#include "TextureScaler.h"
 
 struct VirtualFramebuffer;
 
@@ -94,7 +94,6 @@ private:
 	void UpdateSamplingParams(TexCacheEntry &entry, bool force);
 	void LoadTextureLevel(TexCacheEntry &entry, int level);
 	void *DecodeTextureLevel(u8 format, u8 clutformat, int level, u32 &texByteAlign, GLenum &dstFmt);
-	void ScaleTexture(u32* &data, GLenum &dstfmt, int &width, int &height);
 
 	TexCacheEntry *GetEntryAt(u32 texaddr);
 
@@ -102,59 +101,13 @@ private:
 	TexCache cache;
 
 	bool clearCacheNextFrame_;
-
-	template <typename T>
-	class SimpleBuf {
-	public:
-		SimpleBuf() : buf_(NULL), size_(0) {
-		}
-
-		SimpleBuf(size_t size) : buf_(NULL) {
-			resize(size);
-		}
-
-		~SimpleBuf() {
-			if (buf_ != NULL) {
-				FreeMemoryPages(buf_, size_ * sizeof(T));
-			}
-		}
-
-		inline T &operator[](size_t index) {
-			return buf_[index];
-		}
-
-		// Doesn't preserve contents.
-		void resize(size_t size) {
-			if (size_ < size) {
-				if (buf_ != NULL) {
-					FreeMemoryPages(buf_, size_ * sizeof(T));
-				}
-				buf_ = (T *)AllocateMemoryPages(size * sizeof(T));
-				size_ = size;
-			}
-		}
-
-		T *data() {
-			return buf_;
-		}
-
-		size_t size() {
-			return size_;
-		}
-
-	private:
-		T *buf_;
-		size_t size_;
-	};
+	TextureScaler scaler;
 
 	SimpleBuf<u32> tmpTexBuf32;
 	SimpleBuf<u16> tmpTexBuf16;
 
 	SimpleBuf<u32> tmpTexBufRearrange;
 
-	SimpleBuf<u32> tmpTexBufScalingInput;
-	SimpleBuf<u32> tmpTexBufScalingOutput;
-
 	u32 *clutBuf32;
 	u16 *clutBuf16;
 

GPU/GLES/TextureScaler.cpp

@@ -0,0 +1,88 @@
+// Copyright (c) 2012- PPSSPP Project.
+
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, version 2.0 or later versions.
+
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License 2.0 for more details.
+
+// A copy of the GPL 2.0 should have been included with the program.
+// If not, see http://www.gnu.org/licenses/
+
+// Official git repository and contact information can be found at
+// https://github.com/hrydgard/ppsspp and http://www.ppsspp.org/.
+
+#include "TextureScaler.h"
+
+#include "Core/Config.h"
+#include "ext/xbrz/xbrz.h"
+
+void TextureScaler::Scale(u32* &data, GLenum &dstFmt, int &width, int &height) {
+	if(g_Config.iXBRZTexScalingLevel > 1) {
+		int factor = g_Config.iXBRZTexScalingLevel;
+
+		// depending on the factor and texture sizes, these can be pretty large (25 MB for a 512 by 512 texture with scaling factor 5)
+		bufInput.resize(width*height); // used to store the input image image if it needs to be reformatted
+		bufOutput.resize(width*height*factor*factor); // used to store the upscaled image
+		u32 *xbrzInputBuf = bufInput.data();
+		u32 *xbrzBuf = bufOutput.data();
+
+		// convert texture to correct format for xBRZ
+		switch(dstFmt) {
+		case GL_UNSIGNED_BYTE:
+			xbrzInputBuf = data; // already fine
+			break;
+
+		case GL_UNSIGNED_SHORT_4_4_4_4:
+			for(int y = 0; y < height; ++y) {
+				for(int x = 0; x < width; ++x) {
+					u32 val = ((u16*)data)[y*width + x];
+					u32 r = ((val>>12) & 0xF) * 17;
+					u32 g = ((val>> 8) & 0xF) * 17;
+					u32 b = ((val>> 4) & 0xF) * 17;
+					u32 a = ((val>> 0) & 0xF) * 17;
+					xbrzInputBuf[y*width + x] = (a << 24) | (b << 16) | (g << 8) | r;
+				}
+			}
+			break;
+
+		case GL_UNSIGNED_SHORT_5_6_5:
+			for(int y = 0; y < height; ++y) {
+				for(int x = 0; x < width; ++x) {
+					u32 val = ((u16*)data)[y*width + x];
+					u32 r = ((val>>11) & 0x1F) * 8;
+					u32 g = ((val>> 5) & 0x3F) * 4;
+					u32 b = ((val    ) & 0x1F) * 8;
+					xbrzInputBuf[y*width + x] = (0xFF << 24) | (b << 16) | (g << 8) | r;
+				}
+			}
+			break;
+
+		case GL_UNSIGNED_SHORT_5_5_5_1:
+			for(int y = 0; y < height; ++y) {
+				for(int x = 0; x < width; ++x) {
+					u32 val = ((u16*)data)[y*width + x];
+					u32 r = ((val>>11) & 0x1F) * 8;
+					u32 g = ((val>> 6) & 0x1F) * 8;
+					u32 b = ((val>> 1) & 0x1F) * 8;
+					u32 a = (val & 0x1) * 255;
+					xbrzInputBuf[y*width + x] = (a << 24) | (b << 16) | (g << 8) | r;
+				}
+			}
+			break;
+
+		default:
+			ERROR_LOG(G3D, "iXBRZTexScaling: unsupported texture format");
+		}
+
+		// scale and update values accordingly
+		xbrz::scale(factor, xbrzInputBuf, xbrzBuf, width, height);
+		data = xbrzBuf;
+		dstFmt = GL_UNSIGNED_BYTE;
+		width *= factor;
+		height *= factor;
+	}
+}

GPU/GLES/TextureScaler.h

@@ -0,0 +1,75 @@
+// Copyright (c) 2012- PPSSPP Project.
+
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, version 2.0 or later versions.
+
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License 2.0 for more details.
+
+// A copy of the GPL 2.0 should have been included with the program.
+// If not, see http://www.gnu.org/licenses/
+
+// Official git repository and contact information can be found at
+// https://github.com/hrydgard/ppsspp and http://www.ppsspp.org/.
+
+#pragma once
+
+#include "Common/MemoryUtil.h"
+#include "../Globals.h"
+#include "../native/ext/glew/GL/glew.h"
+
+template <typename T>
+class SimpleBuf {
+public:
+	SimpleBuf() : buf_(NULL), size_(0) {
+	}
+
+	SimpleBuf(size_t size) : buf_(NULL) {
+		resize(size);
+	}
+
+	~SimpleBuf() {
+		if (buf_ != NULL) {
+			FreeMemoryPages(buf_, size_ * sizeof(T));
+		}
+	}
+
+	inline T &operator[](size_t index) {
+		return buf_[index];
+	}
+
+	// Doesn't preserve contents.
+	void resize(size_t size) {
+		if (size_ < size) {
+			if (buf_ != NULL) {
+				FreeMemoryPages(buf_, size_ * sizeof(T));
+			}
+			buf_ = (T *)AllocateMemoryPages(size * sizeof(T));
+			size_ = size;
+		}
+	}
+
+	T *data() {
+		return buf_;
+	}
+
+	size_t size() {
+		return size_;
+	}
+
+private:
+	T *buf_;
+	size_t size_;
+};
+
+class TextureScaler {
+public:
+	void Scale(u32* &data, GLenum &dstfmt, int &width, int &height);
+
+private:
+	SimpleBuf<u32> bufInput;
+	SimpleBuf<u32> bufOutput;
+};

GPU/GPU.vcxproj

@@ -138,6 +138,7 @@
     <ClInclude Include="GLES\ShaderManager.h" />
     <ClInclude Include="GLES\StateMapping.h" />
     <ClInclude Include="GLES\TextureCache.h" />
+    <ClInclude Include="GLES\TextureScaler.h" />
     <ClInclude Include="GLES\TransformPipeline.h" />
     <ClInclude Include="GLES\VertexDecoder.h" />
     <ClInclude Include="GLES\VertexShaderGenerator.h" />
@@ -157,6 +158,7 @@
     <ClCompile Include="GLES\ShaderManager.cpp" />
     <ClCompile Include="GLES\StateMapping.cpp" />
     <ClCompile Include="GLES\TextureCache.cpp" />
+    <ClCompile Include="GLES\TextureScaler.cpp" />
     <ClCompile Include="GLES\TransformPipeline.cpp" />
     <ClCompile Include="GLES\VertexDecoder.cpp">
       <AssemblerOutput Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">AssemblyAndSourceCode</AssemblerOutput>

GPU/GPU.vcxproj.filters

@@ -64,6 +64,10 @@
     <ClInclude Include="GPUCommon.h">
       <Filter>Common</Filter>
     </ClInclude>
+    <ClInclude Include="..\ext\xbrz\xbrz.h" />
+    <ClInclude Include="GLES\TextureScaler.h">
+      <Filter>GLES</Filter>
+    </ClInclude>
   </ItemGroup>
   <ItemGroup>
     <ClCompile Include="Math3D.cpp">
@@ -109,6 +113,10 @@
     <ClCompile Include="GPUCommon.cpp">
       <Filter>Common</Filter>
     </ClCompile>
+    <ClCompile Include="..\ext\xbrz\xbrz.cpp" />
+    <ClCompile Include="GLES\TextureScaler.cpp">
+      <Filter>GLES</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <None Include="CMakeLists.txt" />