readded texture resampling

4 files changed, 76 insertions, 43 deletions

diff --git a/src/engine/client/backend_sdl.cpp b/src/engine/client/backend_sdl.cpp
index d99f765b..6fa6de01 100644
--- a/src/engine/client/backend_sdl.cpp
+++ b/src/engine/client/backend_sdl.cpp
@@ -100,6 +100,41 @@ int CCommandProcessorFragment_OpenGL::TexFormatToOpenGLFormat(int TexFormat)
 	return GL_RGBA;
 }
 
+unsigned char CCommandProcessorFragment_OpenGL::Sample(int w, int h, const unsigned char *pData, int u, int v, int Offset, int ScaleW, int ScaleH, int Bpp)
+{
+	int Value = 0;
+	for(int x = 0; x < ScaleW; x++)
+		for(int y = 0; y < ScaleH; y++)
+			Value += pData[((v+y)*w+(u+x))*Bpp+Offset];
+	return Value/(ScaleW*ScaleH);
+}
+
+void *CCommandProcessorFragment_OpenGL::Rescale(int Width, int Height, int NewWidth, int NewHeight, int Format, const unsigned char *pData)
+{
+	unsigned char *pTmpData;
+	int ScaleW = Width/NewWidth;
+	int ScaleH = Height/NewHeight;
+
+	int Bpp = 3;
+	if(Format == CCommandBuffer::TEXFORMAT_RGBA)
+		Bpp = 4;
+
+	pTmpData = (unsigned char *)mem_alloc(NewWidth*NewHeight*Bpp, 1);
+
+	int c = 0;
+	for(int y = 0; y < NewHeight; y++)
+		for(int x = 0; x < NewWidth; x++, c++)
+		{
+			pTmpData[c*Bpp] = Sample(Width, Height, pData, x*ScaleW, y*ScaleH, 0, ScaleW, ScaleH, Bpp);
+			pTmpData[c*Bpp+1] = Sample(Width, Height, pData, x*ScaleW, y*ScaleH, 1, ScaleW, ScaleH, Bpp);
+			pTmpData[c*Bpp+2] = Sample(Width, Height, pData, x*ScaleW, y*ScaleH, 2, ScaleW, ScaleH, Bpp);
+			if(Bpp == 4)
+				pTmpData[c*Bpp+3] = Sample(Width, Height, pData, x*ScaleW, y*ScaleH, 3, ScaleW, ScaleH, Bpp);
+		}
+
+	return pTmpData;
+}
+
 void CCommandProcessorFragment_OpenGL::SetState(const CCommandBuffer::SState &State)
 {
 	// blend
@@ -179,6 +214,39 @@ void CCommandProcessorFragment_OpenGL::Cmd_Texture_Destroy(const CCommandBuffer:
 
 void CCommandProcessorFragment_OpenGL::Cmd_Texture_Create(const CCommandBuffer::SCommand_Texture_Create *pCommand)
 {
+	int Width = pCommand->m_Width;
+	int Height = pCommand->m_Height;
+	void *pTexData = pCommand->m_pData;
+
+	// resample if needed
+	if(pCommand->m_Format == CCommandBuffer::TEXFORMAT_RGBA || pCommand->m_Format == CCommandBuffer::TEXFORMAT_RGB)
+	{
+		int MaxTexSize;

+		glGetIntegerv(GL_MAX_TEXTURE_SIZE, &MaxTexSize);
+		if(Width > MaxTexSize || Height > MaxTexSize)
+		{
+			do
+			{
+				Width>>=1;
+				Height>>=1;
+			}
+			while(Width > MaxTexSize || Height > MaxTexSize);
+
+			void *pTmpData = Rescale(pCommand->m_Width, pCommand->m_Height, Width, Height, pCommand->m_Format, static_cast<const unsigned char *>(pCommand->m_pData));
+			mem_free(pTexData);
+			pTexData = pTmpData;
+		}
+		else if(Width > 16 && Height > 16 && (pCommand->m_Flags&CCommandBuffer::TEXFLAG_QUALITY) == 0)
+		{
+			Width>>=1;
+			Height>>=1;
+
+			void *pTmpData = Rescale(pCommand->m_Width, pCommand->m_Height, Width, Height, pCommand->m_Format, static_cast<const unsigned char *>(pCommand->m_pData));
+			mem_free(pTexData);
+			pTexData = pTmpData;
+		}
+	}
+
 	int Oglformat = TexFormatToOpenGLFormat(pCommand->m_Format);
 	int StoreOglformat = TexFormatToOpenGLFormat(pCommand->m_StoreFormat);
 
@@ -199,18 +267,16 @@ void CCommandProcessorFragment_OpenGL::Cmd_Texture_Create(const CCommandBuffer::
 	{
 		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
 		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
-		glTexImage2D(GL_TEXTURE_2D, 0, StoreOglformat, pCommand->m_Width, pCommand->m_Height, 0, Oglformat, GL_UNSIGNED_BYTE, pCommand->m_pData);
+		glTexImage2D(GL_TEXTURE_2D, 0, StoreOglformat, Width, Height, 0, Oglformat, GL_UNSIGNED_BYTE, pTexData);
 	}
 	else
 	{
 		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
 		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_NEAREST);
-		gluBuild2DMipmaps(GL_TEXTURE_2D, StoreOglformat, pCommand->m_Width, pCommand->m_Height, Oglformat, GL_UNSIGNED_BYTE, pCommand->m_pData);
+		gluBuild2DMipmaps(GL_TEXTURE_2D, StoreOglformat, Width, Height, Oglformat, GL_UNSIGNED_BYTE, pTexData);
 	}
 
 	// calculate memory usage
-	int Width = pCommand->m_Width;
-	int Height = pCommand->m_Height;
 	m_aTextures[pCommand->m_Slot].m_MemSize = Width*Height*pCommand->m_PixelSize;
 	while(Width > 2 && Height > 2)
 	{
@@ -220,7 +286,7 @@ void CCommandProcessorFragment_OpenGL::Cmd_Texture_Create(const CCommandBuffer::
 	}
 	*m_pTextureMemoryUsage += m_aTextures[pCommand->m_Slot].m_MemSize;
 
-	mem_free(pCommand->m_pData);
+	mem_free(pTexData);
 }
 
 void CCommandProcessorFragment_OpenGL::Cmd_Clear(const CCommandBuffer::SCommand_Clear *pCommand)
diff --git a/src/engine/client/backend_sdl.h b/src/engine/client/backend_sdl.h
index e1fc60b0..e90f9455 100644
--- a/src/engine/client/backend_sdl.h
+++ b/src/engine/client/backend_sdl.h
@@ -189,6 +189,8 @@ public:
 
 private:
 	static int TexFormatToOpenGLFormat(int TexFormat);
+	static unsigned char Sample(int w, int h, const unsigned char *pData, int u, int v, int Offset, int ScaleW, int ScaleH, int Bpp);
+	static void *Rescale(int Width, int Height, int NewWidth, int NewHeight, int Format, const unsigned char *pData);
 
 	void SetState(const CCommandBuffer::SState &State);
 
diff --git a/src/engine/client/graphics_threaded.cpp b/src/engine/client/graphics_threaded.cpp
index 751e4ad2..7a2687c5 100644
--- a/src/engine/client/graphics_threaded.cpp
+++ b/src/engine/client/graphics_threaded.cpp
@@ -107,41 +107,6 @@ void CGraphics_Threaded::Rotate4(const CCommandBuffer::SPoint &rCenter, CCommand
 	}
 }
 
-unsigned char CGraphics_Threaded::Sample(int w, int h, const unsigned char *pData, int u, int v, int Offset, int ScaleW, int ScaleH, int Bpp)
-{
-	int Value = 0;
-	for(int x = 0; x < ScaleW; x++)
-		for(int y = 0; y < ScaleH; y++)
-			Value += pData[((v+y)*w+(u+x))*Bpp+Offset];
-	return Value/(ScaleW*ScaleH);
-}
-
-unsigned char *CGraphics_Threaded::Rescale(int Width, int Height, int NewWidth, int NewHeight, int Format, const unsigned char *pData)
-{
-	unsigned char *pTmpData;
-	int ScaleW = Width/NewWidth;
-	int ScaleH = Height/NewHeight;
-
-	int Bpp = 3;
-	if(Format == CImageInfo::FORMAT_RGBA)
-		Bpp = 4;
-
-	pTmpData = (unsigned char *)mem_alloc(NewWidth*NewHeight*Bpp, 1);
-
-	int c = 0;
-	for(int y = 0; y < NewHeight; y++)
-		for(int x = 0; x < NewWidth; x++, c++)
-		{
-			pTmpData[c*Bpp] = Sample(Width, Height, pData, x*ScaleW, y*ScaleH, 0, ScaleW, ScaleH, Bpp);
-			pTmpData[c*Bpp+1] = Sample(Width, Height, pData, x*ScaleW, y*ScaleH, 1, ScaleW, ScaleH, Bpp);
-			pTmpData[c*Bpp+2] = Sample(Width, Height, pData, x*ScaleW, y*ScaleH, 2, ScaleW, ScaleH, Bpp);
-			if(Bpp == 4)
-				pTmpData[c*Bpp+3] = Sample(Width, Height, pData, x*ScaleW, y*ScaleH, 3, ScaleW, ScaleH, Bpp);
-		}
-
-	return pTmpData;
-}
-
 CGraphics_Threaded::CGraphics_Threaded()
 {
 	m_State.m_ScreenTL.x = 0;
@@ -365,6 +330,8 @@ int CGraphics_Threaded::LoadTextureRaw(int Width, int Height, int Format, const
 		Cmd.m_Flags |= CCommandBuffer::TEXFLAG_NOMIPMAPS;
 	if(g_Config.m_GfxTextureCompression)
 		Cmd.m_Flags |= CCommandBuffer::TEXFLAG_COMPRESSED;
+	if(g_Config.m_GfxTextureQuality || Flags&TEXLOAD_NORESAMPLE)
+		Cmd.m_Flags |= CCommandBuffer::TEXFLAG_QUALITY;
 
 	// copy texture data
 	int MemSize = Width*Height*Cmd.m_PixelSize;
diff --git a/src/engine/client/graphics_threaded.h b/src/engine/client/graphics_threaded.h
index 6b3963ee..809a383a 100644
--- a/src/engine/client/graphics_threaded.h
+++ b/src/engine/client/graphics_threaded.h
@@ -96,6 +96,7 @@ public:
 
 		TEXFLAG_NOMIPMAPS = 1,
 		TEXFLAG_COMPRESSED = 2,
+		TEXFLAG_QUALITY = 4,
 	};
 
 	enum
@@ -363,9 +364,6 @@ class CGraphics_Threaded : public IEngineGraphics
 	void AddVertices(int Count);
 	void Rotate4(const CCommandBuffer::SPoint &rCenter, CCommandBuffer::SVertex *pPoints);
 
-	static unsigned char Sample(int w, int h, const unsigned char *pData, int u, int v, int Offset, int ScaleW, int ScaleH, int Bpp);
-	static unsigned char *Rescale(int Width, int Height, int NewWidth, int NewHeight, int Format, const unsigned char *pData);
-
 	void KickCommandBuffer();
 
 	int IssueInit();