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https://github.com/dolphin-emu/dolphin.git
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VideoCommon: Remove support for decoding to ARGB textures
The D3D / OGL backends only ever used RGBA textures, and the Software backend uses its own custom code for sampling. The ARGB path seems to just be dead code. Since ARGB and RGBA formats are similar, I don't think this will make the code more difficult to read or unable to be used as reference. Somebody who wants to use this code to output ARGB can simply modify the MakeRGBA function to put the shift at the other end.
This commit is contained in:
Jasper St. Pierre
@ -17,26 +17,6 @@
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// Decodes all known GameCube/Wii texture formats.
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// by ector
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static inline u32 decode5A3(u16 val)
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{
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int r,g,b,a;
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if ((val & 0x8000))
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{
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a = 0xFF;
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r = Convert5To8((val >> 10) & 0x1F);
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g = Convert5To8((val >> 5) & 0x1F);
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b = Convert5To8(val & 0x1F);
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}
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else
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{
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a = Convert3To8((val >> 12) & 0x7);
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r = Convert4To8((val >> 8) & 0xF);
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g = Convert4To8((val >> 4) & 0xF);
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b = Convert4To8(val & 0xF);
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}
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return (a << 24) | (r << 16) | (g << 8) | b;
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}
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static inline u32 decode5A3RGBA(u16 val)
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{
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int r,g,b,a;
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@ -80,18 +60,6 @@ struct DXTBlock
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u8 lines[4];
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};
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//inline void decodebytesC4(u32 *dst, const u8 *src, int numbytes, int tlutaddr, int tlutfmt)
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inline void decodebytesC4_5A3_To_BGRA32(u32 *dst, const u8 *src, int tlutaddr)
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{
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u16 *tlut = (u16*)(texMem + tlutaddr);
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for (int x = 0; x < 4; x++)
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{
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u8 val = src[x];
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*dst++ = decode5A3(Common::swap16(tlut[val >> 4]));
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*dst++ = decode5A3(Common::swap16(tlut[val & 0xF]));
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}
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}
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inline void decodebytesC4_5A3_To_rgba32(u32 *dst, const u8 *src, int tlutaddr)
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{
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u16 *tlut = (u16*)(texMem + tlutaddr);
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@ -103,17 +71,6 @@ inline void decodebytesC4_5A3_To_rgba32(u32 *dst, const u8 *src, int tlutaddr)
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}
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}
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inline void decodebytesC4_To_Raw16(u16* dst, const u8* src, int tlutaddr)
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{
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u16* tlut = (u16*)(texMem+tlutaddr);
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for (int x = 0; x < 4; x++)
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{
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u8 val = src[x];
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*dst++ = Common::swap16(tlut[val >> 4]);
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*dst++ = Common::swap16(tlut[val & 0xF]);
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}
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}
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inline void decodebytesC4IA8_To_RGBA(u32* dst, const u8* src, int tlutaddr)
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{
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u16* tlut = (u16*)(texMem+tlutaddr);
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@ -136,17 +93,6 @@ inline void decodebytesC4RGB565_To_RGBA(u32* dst, const u8* src, int tlutaddr)
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}
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}
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//inline void decodebytesC8(u32 *dst, const u8 *src, int numbytes, int tlutaddr, int tlutfmt)
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inline void decodebytesC8_5A3_To_BGRA32(u32 *dst, const u8 *src, int tlutaddr)
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{
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u16 *tlut = (u16*)(texMem + tlutaddr);
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for (int x = 0; x < 8; x++)
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{
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u8 val = src[x];
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*dst++ = decode5A3(Common::swap16(tlut[val]));
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}
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}
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inline void decodebytesC8_5A3_To_RGBA32(u32 *dst, const u8 *src, int tlutaddr)
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{
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u16 *tlut = (u16*)(texMem + tlutaddr);
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@ -157,16 +103,6 @@ inline void decodebytesC8_5A3_To_RGBA32(u32 *dst, const u8 *src, int tlutaddr)
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}
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}
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inline void decodebytesC8_To_Raw16(u16* dst, const u8* src, int tlutaddr)
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{
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u16* tlut = (u16*)(texMem + tlutaddr);
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for (int x = 0; x < 8; x++)
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{
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u8 val = src[x];
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*dst++ = Common::swap16(tlut[val]);
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}
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}
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inline void decodebytesC8IA8_To_RGBA(u32* dst, const u8* src, int tlutaddr)
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{
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u16* tlut = (u16*)(texMem + tlutaddr);
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@ -185,16 +121,6 @@ inline void decodebytesC8RGB565_To_RGBA(u32* dst, const u8* src, int tlutaddr)
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}
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}
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inline void decodebytesC14X2_5A3_To_BGRA32(u32 *dst, const u16 *src, int tlutaddr)
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{
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u16 *tlut = (u16*)(texMem + tlutaddr);
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for (int x = 0; x < 4; x++)
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{
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u16 val = Common::swap16(src[x]);
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*dst++ = decode5A3(Common::swap16(tlut[(val & 0x3FFF)]));
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}
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}
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inline void decodebytesC14X2_5A3_To_RGBA(u32 *dst, const u16 *src, int tlutaddr)
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{
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u16 *tlut = (u16*)(texMem + tlutaddr);
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@ -205,16 +131,6 @@ inline void decodebytesC14X2_5A3_To_RGBA(u32 *dst, const u16 *src, int tlutaddr)
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}
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}
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inline void decodebytesC14X2_To_Raw16(u16* dst, const u16* src, int tlutaddr)
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{
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u16* tlut = (u16*)(texMem + tlutaddr);
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for (int x = 0; x < 4; x++)
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{
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u16 val = Common::swap16(src[x]);
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*dst++ = Common::swap16(tlut[(val & 0x3FFF)]);
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}
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}
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inline void decodebytesC14X2IA8_To_RGBA(u32* dst, const u16* src, int tlutaddr)
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{
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u16* tlut = (u16*)(texMem + tlutaddr);
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@ -235,18 +151,6 @@ inline void decodebytesC14X2rgb565_To_RGBA(u32* dst, const u16* src, int tlutadd
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}
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}
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// Needs more speed.
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inline void decodebytesIA4(u16 *dst, const u8 *src)
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{
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for (int x = 0; x < 8; x++)
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{
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const u8 val = src[x];
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u8 a = Convert4To8(val >> 4);
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u8 l = Convert4To8(val & 0xF);
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dst[x] = (a << 8) | l;
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}
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}
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inline void decodebytesIA4RGBA(u32 *dst, const u8 *src)
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{
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for (int x = 0; x < 8; x++)
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@ -258,19 +162,6 @@ inline void decodebytesIA4RGBA(u32 *dst, const u8 *src)
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}
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}
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inline void decodebytesRGB5A3(u32 *dst, const u16 *src)
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{
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#if 0
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for (int x = 0; x < 4; x++)
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dst[x] = decode5A3(Common::swap16(src[x]));
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#else
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dst[0] = decode5A3(Common::swap16(src[0]));
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dst[1] = decode5A3(Common::swap16(src[1]));
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dst[2] = decode5A3(Common::swap16(src[2]));
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dst[3] = decode5A3(Common::swap16(src[3]));
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#endif
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}
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inline void decodebytesRGB5A3rgba(u32 *dst, const u16 *src)
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{
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#if 0
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@ -284,29 +175,6 @@ inline void decodebytesRGB5A3rgba(u32 *dst, const u16 *src)
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#endif
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}
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// This one is used by many video formats. It'd therefore be good if it was fast.
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// Needs more speed.
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inline void decodebytesARGB8_4(u32 *dst, const u16 *src, const u16 *src2)
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{
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#if 0
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for (int x = 0; x < 4; x++)
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dst[x] = Common::swap32((src2[x] << 16) | src[x]);
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#else
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dst[0] = Common::swap32((src2[0] << 16) | src[0]);
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dst[1] = Common::swap32((src2[1] << 16) | src[1]);
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dst[2] = Common::swap32((src2[2] << 16) | src[2]);
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dst[3] = Common::swap32((src2[3] << 16) | src[3]);
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#endif
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// This can probably be done in a few SSE pack/unpack instructions + pshufb
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// some unpack instruction x2:
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// ABABABABABABABAB 1212121212121212 ->
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// AB12AB12AB12AB12 AB12AB12AB12AB12
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// 2x pshufb->
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// 21BA21BA21BA21BA 21BA21BA21BA21BA
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// and we are done.
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}
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inline void decodebytesARGB8_4ToRgba(u32 *dst, const u16 *src, const u16 * src2)
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{
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#if 0
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@ -322,59 +190,11 @@ inline void decodebytesARGB8_4ToRgba(u32 *dst, const u16 *src, const u16 * src2)
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#endif
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}
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inline u32 makecol(int r, int g, int b, int a)
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{
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return (a << 24)|(r << 16)|(g << 8)|b;
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}
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inline u32 makeRGBA(int r, int g, int b, int a)
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{
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return (a<<24)|(b<<16)|(g<<8)|r;
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}
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void decodeDXTBlock(u32 *dst, const DXTBlock *src, int pitch)
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{
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// S3TC Decoder (Note: GCN decodes differently from PC so we can't use native support)
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// Needs more speed.
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u16 c1 = Common::swap16(src->color1);
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u16 c2 = Common::swap16(src->color2);
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int blue1 = Convert5To8(c1 & 0x1F);
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int blue2 = Convert5To8(c2 & 0x1F);
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int green1 = Convert6To8((c1 >> 5) & 0x3F);
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int green2 = Convert6To8((c2 >> 5) & 0x3F);
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int red1 = Convert5To8((c1 >> 11) & 0x1F);
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int red2 = Convert5To8((c2 >> 11) & 0x1F);
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int colors[4];
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colors[0] = makecol(red1, green1, blue1, 255);
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colors[1] = makecol(red2, green2, blue2, 255);
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if (c1 > c2)
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{
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int blue3 = ((blue2 - blue1) >> 1) - ((blue2 - blue1) >> 3);
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int green3 = ((green2 - green1) >> 1) - ((green2 - green1) >> 3);
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int red3 = ((red2 - red1) >> 1) - ((red2 - red1) >> 3);
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colors[2] = makecol(red1 + red3, green1 + green3, blue1 + blue3, 255);
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colors[3] = makecol(red2 - red3, green2 - green3, blue2 - blue3, 255);
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}
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else
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{
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colors[2] = makecol((red1 + red2 + 1) / 2, // Average
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(green1 + green2 + 1) / 2,
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(blue1 + blue2 + 1) / 2, 255);
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colors[3] = makecol(red2, green2, blue2, 0); // Color2 but transparent
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}
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for (int y = 0; y < 4; y++)
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{
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int val = src->lines[y];
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for (int x = 0; x < 4; x++)
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{
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dst[x] = colors[(val >> 6) & 3];
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val <<= 2;
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}
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dst += pitch;
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}
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}
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void decodeDXTBlockRGBA(u32 *dst, const DXTBlock *src, int pitch)
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{
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// S3TC Decoder (Note: GCN decodes differently from PC so we can't use native support)
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@ -418,210 +238,6 @@ void decodeDXTBlockRGBA(u32 *dst, const DXTBlock *src, int pitch)
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}
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}
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#if 0 // TODO - currently does not handle transparency correctly and causes problems when texture dimensions are not multiples of 8
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static void copyDXTBlock(u8* dst, const u8* src)
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{
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((u16*)dst)[0] = Common::swap16(((u16*)src)[0]);
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((u16*)dst)[1] = Common::swap16(((u16*)src)[1]);
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u32 pixels = ((u32*)src)[1];
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// A bit of trickiness here: the row are in the same order
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// between the two formats, but the ordering within the rows
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// is reversed.
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pixels = ((pixels >> 4) & 0x0F0F0F0F) | ((pixels << 4) & 0xF0F0F0F0);
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pixels = ((pixels >> 2) & 0x33333333) | ((pixels << 2) & 0xCCCCCCCC);
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((u32*)dst)[1] = pixels;
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}
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#endif
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//switch endianness, unswizzle
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//TODO: to save memory, don't blindly convert everything to argb8888
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//also ARGB order needs to be swapped later, to accommodate modern hardware better
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//need to add DXT support too
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PC_TexFormat TexDecoder_Decode_real(u8 *dst, const u8 *src, int width, int height, int texformat, int tlutaddr, int tlutfmt)
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{
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const int Wsteps4 = (width + 3) / 4;
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const int Wsteps8 = (width + 7) / 8;
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switch (texformat)
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{
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case GX_TF_C4:
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if (tlutfmt == 2)
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{
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// Special decoding is required for TLUT format 5A3
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for (int y = 0; y < height; y += 8)
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for (int x = 0, yStep = (y / 8) * Wsteps8; x < width; x += 8, yStep++)
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for (int iy = 0, xStep = yStep * 8; iy < 8; iy++, xStep++)
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decodebytesC4_5A3_To_BGRA32((u32*)dst + (y + iy) * width + x, src + 4 * xStep, tlutaddr);
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}
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else
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{
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for (int y = 0; y < height; y += 8)
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for (int x = 0, yStep = (y / 8) * Wsteps8; x < width; x += 8, yStep++)
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for (int iy = 0, xStep = yStep * 8; iy < 8; iy++, xStep++)
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decodebytesC4_To_Raw16((u16*)dst + (y + iy) * width + x, src + 4 * xStep, tlutaddr);
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}
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return GetPCFormatFromTLUTFormat(tlutfmt);
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case GX_TF_I4:
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{
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for (int y = 0; y < height; y += 8)
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for (int x = 0, yStep = (y / 8) * Wsteps8; x < width; x += 8, yStep++)
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for (int iy = 0, xStep = yStep * 8 ; iy < 8; iy++,xStep++)
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for (int ix = 0; ix < 4; ix++)
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{
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int val = src[4 * xStep + ix];
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dst[(y + iy) * width + x + ix * 2] = Convert4To8(val >> 4);
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dst[(y + iy) * width + x + ix * 2 + 1] = Convert4To8(val & 0xF);
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}
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}
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return PC_TEX_FMT_I4_AS_I8;
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case GX_TF_I8: // speed critical
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{
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for (int y = 0; y < height; y += 4)
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for (int x = 0, yStep = (y / 4) * Wsteps8; x < width; x += 8, yStep++)
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for (int iy = 0, xStep = 4 * yStep; iy < 4; iy++, xStep++)
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((u64*)(dst + (y + iy) * width + x))[0] = ((u64*)(src + 8 * xStep))[0];
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}
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return PC_TEX_FMT_I8;
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case GX_TF_C8:
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if (tlutfmt == 2)
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{
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// Special decoding is required for TLUT format 5A3
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for (int y = 0; y < height; y += 4)
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for (int x = 0, yStep = (y / 4) * Wsteps8; x < width; x += 8, yStep++)
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for (int iy = 0, xStep = 4 * yStep; iy < 4; iy++, xStep++)
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decodebytesC8_5A3_To_BGRA32((u32*)dst + (y + iy) * width + x, src + 8 * xStep, tlutaddr);
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}
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else
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{
|
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{
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for (int y = 0; y < height; y += 4)
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for (int x = 0, yStep = (y / 4) * Wsteps8; x < width; x += 8, yStep++)
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for (int iy = 0, xStep = 4 * yStep; iy < 4; iy++, xStep++)
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decodebytesC8_To_Raw16((u16*)dst + (y + iy) * width + x, src + 8 * xStep, tlutaddr);
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}
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}
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return GetPCFormatFromTLUTFormat(tlutfmt);
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case GX_TF_IA4:
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{
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for (int y = 0; y < height; y += 4)
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for (int x = 0, yStep = (y / 4) * Wsteps8; x < width; x += 8, yStep++)
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for (int iy = 0, xStep = 4 * yStep; iy < 4; iy++, xStep++)
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decodebytesIA4((u16*)dst + (y + iy) * width + x, src + 8 * xStep);
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}
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return PC_TEX_FMT_IA4_AS_IA8;
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case GX_TF_IA8:
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{
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for (int y = 0; y < height; y += 4)
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for (int x = 0, yStep = (y / 4) * Wsteps4; x < width; x += 4, yStep++)
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for (int iy = 0, xStep = yStep * 4; iy < 4; iy++, xStep++)
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{
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u16 *ptr = (u16 *)dst + (y + iy) * width + x;
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u16 *s = (u16 *)(src + 8 * xStep);
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for (int j = 0; j < 4; j++)
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*ptr++ = Common::swap16(*s++);
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}
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}
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return PC_TEX_FMT_IA8;
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case GX_TF_C14X2:
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if (tlutfmt == 2)
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{
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// Special decoding is required for TLUT format 5A3
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for (int y = 0; y < height; y += 4)
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for (int x = 0, yStep = (y / 4) * Wsteps4; x < width; x += 4, yStep++)
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for (int iy = 0, xStep = 4 * yStep; iy < 4; iy++, xStep++)
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decodebytesC14X2_5A3_To_BGRA32((u32*)dst + (y + iy) * width + x, (u16*)(src + 8 * xStep), tlutaddr);
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}
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else
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{
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for (int y = 0; y < height; y += 4)
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for (int x = 0, yStep = (y / 4) * Wsteps4; x < width; x += 4, yStep++)
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for (int iy = 0, xStep = 4 * yStep; iy < 4; iy++, xStep++)
|
||||
decodebytesC14X2_To_Raw16((u16*)dst + (y + iy) * width + x,(u16*)(src + 8 * xStep), tlutaddr);
|
||||
}
|
||||
return GetPCFormatFromTLUTFormat(tlutfmt);
|
||||
case GX_TF_RGB565:
|
||||
{
|
||||
for (int y = 0; y < height; y += 4)
|
||||
for (int x = 0, yStep = (y / 4) * Wsteps4; x < width; x += 4, yStep++)
|
||||
for (int iy = 0, xStep = 4 * yStep; iy < 4; iy++, xStep++)
|
||||
{
|
||||
u16 *ptr = (u16 *)dst + (y + iy) * width + x;
|
||||
u16 *s = (u16 *)(src + 8 * xStep);
|
||||
for (int j = 0; j < 4; j++)
|
||||
*ptr++ = Common::swap16(*s++);
|
||||
}
|
||||
}
|
||||
return PC_TEX_FMT_RGB565;
|
||||
case GX_TF_RGB5A3:
|
||||
{
|
||||
for (int y = 0; y < height; y += 4)
|
||||
for (int x = 0, yStep = (y / 4) * Wsteps4; x < width; x += 4, yStep++)
|
||||
for (int iy = 0, xStep = 4 * yStep; iy < 4; iy++, xStep++)
|
||||
//decodebytesRGB5A3((u32*)dst+(y+iy)*width+x, (u16*)src, 4);
|
||||
decodebytesRGB5A3((u32*)dst+(y+iy)*width+x, (u16*)(src + 8 * xStep));
|
||||
}
|
||||
return PC_TEX_FMT_BGRA32;
|
||||
case GX_TF_RGBA8: // speed critical
|
||||
{
|
||||
for (int y = 0; y < height; y += 4)
|
||||
{
|
||||
for (int x = 0, yStep = (y / 4) * Wsteps4; x < width; x += 4, yStep++)
|
||||
{
|
||||
const u8* src2 = src + 64 * yStep;
|
||||
for (int iy = 0; iy < 4; iy++)
|
||||
decodebytesARGB8_4((u32*)dst + (y+iy)*width + x, (u16*)src2 + 4 * iy, (u16*)src2 + 4 * iy + 16);
|
||||
}
|
||||
}
|
||||
}
|
||||
return PC_TEX_FMT_BGRA32;
|
||||
case GX_TF_CMPR: // speed critical
|
||||
// The metroid games use this format almost exclusively.
|
||||
{
|
||||
#if 0 // TODO - currently does not handle transparency correctly and causes problems when texture dimensions are not multiples of 8
|
||||
// 11111111 22222222 55555555 66666666
|
||||
// 33333333 44444444 77777777 88888888
|
||||
for (int y = 0; y < height; y += 8)
|
||||
{
|
||||
for (int x = 0; x < width; x += 8)
|
||||
{
|
||||
copyDXTBlock(dst+(y/2)*width+x*2, src);
|
||||
src += 8;
|
||||
copyDXTBlock(dst+(y/2)*width+x*2+8, src);
|
||||
src += 8;
|
||||
copyDXTBlock(dst+(y/2+2)*width+x*2, src);
|
||||
src += 8;
|
||||
copyDXTBlock(dst+(y/2+2)*width+x*2+8, src);
|
||||
src += 8;
|
||||
}
|
||||
}
|
||||
return PC_TEX_FMT_DXT1;
|
||||
#else
|
||||
for (int y = 0; y < height; y += 8)
|
||||
{
|
||||
for (int x = 0, yStep = (y / 8) * Wsteps8; x < width; x += 8, yStep++)
|
||||
{
|
||||
const u8* src2 = src + 4 * sizeof(DXTBlock) * yStep;
|
||||
decodeDXTBlock((u32*)dst + y * width + x, (DXTBlock*)src2, width);
|
||||
src2 += sizeof(DXTBlock);
|
||||
decodeDXTBlock((u32*)dst + y * width + x + 4, (DXTBlock*)src2, width);
|
||||
src2 += sizeof(DXTBlock);
|
||||
decodeDXTBlock((u32*)dst + (y + 4) * width + x, (DXTBlock*)src2, width);
|
||||
src2 += sizeof(DXTBlock);
|
||||
decodeDXTBlock((u32*)dst + (y + 4) * width + x + 4, (DXTBlock*)src2, width);
|
||||
}
|
||||
}
|
||||
#endif
|
||||
return PC_TEX_FMT_BGRA32;
|
||||
}
|
||||
}
|
||||
|
||||
// The "copy" texture formats, too?
|
||||
return PC_TEX_FMT_NONE;
|
||||
}
|
||||
|
||||
|
||||
|
||||
// JSD 01/06/11:
|
||||
// TODO: we really should ensure BOTH the source and destination addresses are aligned to 16-byte boundaries to
|
||||
// squeeze out a little more performance. _mm_loadu_si128/_mm_storeu_si128 is slower than _mm_load_si128/_mm_store_si128
|
||||
@ -630,7 +246,7 @@ PC_TexFormat TexDecoder_Decode_real(u8 *dst, const u8 *src, int width, int heigh
|
||||
// TODO: complete SSE2 optimization of less often used texture formats.
|
||||
// TODO: refactor algorithms using _mm_loadl_epi64 unaligned loads to prefer 128-bit aligned loads.
|
||||
|
||||
PC_TexFormat TexDecoder_Decode_RGBA(u32 * dst, const u8 * src, int width, int height, int texformat, int tlutaddr, int tlutfmt)
|
||||
PC_TexFormat _TexDecoder_DecodeImpl(u32 * dst, const u8 * src, int width, int height, int texformat, int tlutaddr, int tlutfmt)
|
||||
{
|
||||
|
||||
const int Wsteps4 = (width + 3) / 4;
|
||||
@ -832,11 +448,3 @@ PC_TexFormat TexDecoder_Decode_RGBA(u32 * dst, const u8 * src, int width, int he
|
||||
// The "copy" texture formats, too?
|
||||
return PC_TEX_FMT_RGBA32;
|
||||
}
|
||||
|
||||
PC_TexFormat _TexDecoder_DecodeImpl(u8 *dst, const u8 *src, int width, int height, int texformat, int tlutaddr, int tlutfmt,bool rgbaOnly)
|
||||
{
|
||||
if (rgbaOnly)
|
||||
return TexDecoder_Decode_RGBA((u32*)dst, src, width, height, texformat, tlutaddr, tlutfmt);
|
||||
else
|
||||
return TexDecoder_Decode_real(dst, src, width, height, texformat, tlutaddr, tlutfmt);
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user