unai: Use 8.8 RGB triplet format for gouraud shading
[pcsx_rearmed.git] / plugins / gpu_unai / gpu_inner.h
index 76479f9..1a93a39 100644 (file)
@@ -19,6 +19,9 @@
 *   51 Franklin Street, Fifth Floor, Boston, MA 02111-1307 USA.           *
 ***************************************************************************/
 
+#ifndef __GPU_UNAI_GPU_INNER_H__
+#define __GPU_UNAI_GPU_INNER_H__
+
 ///////////////////////////////////////////////////////////////////////////////
 // Inner loop driver instantiation file
 
 #include "gpu_inner_blend_arm.h"
 #include "gpu_inner_light_arm.h"
 #define gpuBlending gpuBlendingARM
-#define gpuLightingRGB gpuLightingRGBARM
 #define gpuLightingTXT gpuLightingTXTARM
-#define gpuLightingTXTGouraud gpuLightingTXTGouraudARM
-// Non-dithering lighting and blending functions preserve uSrc
-// MSB. This saves a few operations and useless load/stores.
-#define MSB_PRESERVED (!CF_DITHER)
 #else
 #define gpuBlending gpuBlendingGeneric
-#define gpuLightingRGB gpuLightingRGBGeneric
 #define gpuLightingTXT gpuLightingTXTGeneric
-#define gpuLightingTXTGouraud gpuLightingTXTGouraudGeneric
-#define MSB_PRESERVED 0
 #endif
 
+// Non-dithering lighting and blending functions preserve uSrc
+// MSB. This saves a few operations and useless load/stores.
+#define MSB_PRESERVED (!CF_DITHER)
 
 // If defined, Gouraud colors are fixed-point 5.11, otherwise they are 8.16
 // This is only for debugging/verification of low-precision colors in C.
@@ -120,12 +118,8 @@ static inline u16 gpuGouraudColor15bpp(u32 r, u32 g, u32 b)
 //  rectangles) to use the same set of functions. Since tiles are always
 //  monochrome, they simply wouldn't use the extra set of 32 gouraud-shaded
 //  gpuPixelSpanFn functions (TODO?).
-//
-// NOTE: While the PS1 framebuffer is 16 bit, we use 8-bit pointers here,
-//       so that pDst can be incremented directly by 'incr' parameter
-//       without having to shift it before use.
 template<int CF>
-static u8* gpuPixelSpanFn(u8* pDst, uintptr_t data, ptrdiff_t incr, size_t len)
+static le16_t* gpuPixelSpanFn(le16_t* pDst, uintptr_t data, ptrdiff_t incr, size_t len)
 {
        // Blend func can save an operation if it knows uSrc MSB is
        //  unset. For untextured prims, this is always true.
@@ -136,6 +130,9 @@ static u8* gpuPixelSpanFn(u8* pDst, uintptr_t data, ptrdiff_t incr, size_t len)
        u32 r, g, b;
        s32 r_incr, g_incr, b_incr;
 
+       // Caller counts in bytes, we count in pixels
+       incr /= 2;
+
        if (CF_GOURAUD) {
                gcPtr = (GouraudColor*)data;
                r = gcPtr->r;  r_incr = gcPtr->r_incr;
@@ -149,15 +146,15 @@ static u8* gpuPixelSpanFn(u8* pDst, uintptr_t data, ptrdiff_t incr, size_t len)
                if (!CF_GOURAUD)
                {   // NO GOURAUD
                        if (!CF_MASKCHECK && !CF_BLEND) {
-                               if (CF_MASKSET) { *(u16*)pDst = col | 0x8000; }
-                               else            { *(u16*)pDst = col;          }
+                               if (CF_MASKSET) { *pDst = u16_to_le16(col | 0x8000); }
+                               else            { *pDst = u16_to_le16(col);          }
                        } else if (CF_MASKCHECK && !CF_BLEND) {
-                               if (!(*(u16*)pDst & 0x8000)) {
-                                       if (CF_MASKSET) { *(u16*)pDst = col | 0x8000; }
-                                       else            { *(u16*)pDst = col;          }
+                               if (!(le16_raw(*pDst) & HTOLE16(0x8000))) {
+                                       if (CF_MASKSET) { *pDst = u16_to_le16(col | 0x8000); }
+                                       else            { *pDst = u16_to_le16(col);          }
                                }
                        } else {
-                               uint_fast16_t uDst = *(u16*)pDst;
+                               uint_fast16_t uDst = le16_to_u16(*pDst);
                                if (CF_MASKCHECK) { if (uDst & 0x8000) goto endpixel; }
 
                                uint_fast16_t uSrc = col;
@@ -165,8 +162,8 @@ static u8* gpuPixelSpanFn(u8* pDst, uintptr_t data, ptrdiff_t incr, size_t len)
                                if (CF_BLEND)
                                        uSrc = gpuBlending<CF_BLENDMODE, skip_uSrc_mask>(uSrc, uDst);
 
-                               if (CF_MASKSET) { *(u16*)pDst = uSrc | 0x8000; }
-                               else            { *(u16*)pDst = uSrc;          }
+                               if (CF_MASKSET) { *pDst = u16_to_le16(uSrc | 0x8000); }
+                               else            { *pDst = u16_to_le16(uSrc);          }
                        }
 
                } else
@@ -174,16 +171,16 @@ static u8* gpuPixelSpanFn(u8* pDst, uintptr_t data, ptrdiff_t incr, size_t len)
 
                        if (!CF_MASKCHECK && !CF_BLEND) {
                                col = gpuGouraudColor15bpp(r, g, b);
-                               if (CF_MASKSET) { *(u16*)pDst = col | 0x8000; }
-                               else            { *(u16*)pDst = col;          }
+                               if (CF_MASKSET) { *pDst = u16_to_le16(col | 0x8000); }
+                               else            { *pDst = u16_to_le16(col);          }
                        } else if (CF_MASKCHECK && !CF_BLEND) {
                                col = gpuGouraudColor15bpp(r, g, b);
-                               if (!(*(u16*)pDst & 0x8000)) {
-                                       if (CF_MASKSET) { *(u16*)pDst = col | 0x8000; }
-                                       else            { *(u16*)pDst = col;          }
+                               if (!(le16_raw(*pDst) & HTOLE16(0x8000))) {
+                                       if (CF_MASKSET) { *pDst = u16_to_le16(col | 0x8000); }
+                                       else            { *pDst = u16_to_le16(col);          }
                                }
                        } else {
-                               uint_fast16_t uDst = *(u16*)pDst;
+                               uint_fast16_t uDst = le16_to_u16(*pDst);
                                if (CF_MASKCHECK) { if (uDst & 0x8000) goto endpixel; }
                                col = gpuGouraudColor15bpp(r, g, b);
 
@@ -196,8 +193,8 @@ static u8* gpuPixelSpanFn(u8* pDst, uintptr_t data, ptrdiff_t incr, size_t len)
                                if (CF_BLEND)
                                        uSrc = gpuBlending<CF_BLENDMODE, skip_uSrc_mask>(uSrc, uDst);
 
-                               if (CF_MASKSET) { *(u16*)pDst = uSrc | 0x8000; }
-                               else            { *(u16*)pDst = uSrc;          }
+                               if (CF_MASKSET) { *pDst = u16_to_le16(uSrc | 0x8000); }
+                               else            { *pDst = u16_to_le16(uSrc);          }
                        }
                }
 
@@ -225,7 +222,7 @@ endpixel:
        return pDst;
 }
 
-static u8* PixelSpanNULL(u8* pDst, uintptr_t data, ptrdiff_t incr, size_t len)
+static le16_t* PixelSpanNULL(le16_t* pDst, uintptr_t data, ptrdiff_t incr, size_t len)
 {
        #ifdef ENABLE_GPU_LOG_SUPPORT
                fprintf(stdout,"PixelSpanNULL()\n");
@@ -235,7 +232,7 @@ static u8* PixelSpanNULL(u8* pDst, uintptr_t data, ptrdiff_t incr, size_t len)
 
 ///////////////////////////////////////////////////////////////////////////////
 //  PixelSpan (lines) innerloops driver
-typedef u8* (*PSD)(u8* dst, uintptr_t data, ptrdiff_t incr, size_t len);
+typedef le16_t* (*PSD)(le16_t* dst, uintptr_t data, ptrdiff_t incr, size_t len);
 
 const PSD gpuPixelSpanDrivers[64] =
 { 
@@ -279,14 +276,26 @@ const PSD gpuPixelSpanDrivers[64] =
 //  GPU Tiles innerloops generator
 
 template<int CF>
-static void gpuTileSpanFn(u16 *pDst, u32 count, u16 data)
+static void gpuTileSpanFn(le16_t *pDst, u32 count, u16 data)
 {
+       le16_t ldata;
+
        if (!CF_MASKCHECK && !CF_BLEND) {
-               if (CF_MASKSET) { data = data | 0x8000; }
-               do { *pDst++ = data; } while (--count);
+               if (CF_MASKSET)
+                       ldata = u16_to_le16(data | 0x8000);
+               else
+                       ldata = u16_to_le16(data);
+               do { *pDst++ = ldata; } while (--count);
        } else if (CF_MASKCHECK && !CF_BLEND) {
-               if (CF_MASKSET) { data = data | 0x8000; }
-               do { if (!(*pDst&0x8000)) { *pDst = data; } pDst++; } while (--count);
+               if (CF_MASKSET)
+                       ldata = u16_to_le16(data | 0x8000);
+               else
+                       ldata = u16_to_le16(data);
+               do {
+                       if (!(le16_raw(*pDst) & HTOLE16(0x8000)))
+                               *pDst = ldata;
+                       pDst++;
+               } while (--count);
        } else
        {
                // Blend func can save an operation if it knows uSrc MSB is
@@ -296,16 +305,16 @@ static void gpuTileSpanFn(u16 *pDst, u32 count, u16 data)
                uint_fast16_t uSrc, uDst;
                do
                {
-                       if (CF_MASKCHECK || CF_BLEND) { uDst = *pDst; }
-                       if (CF_MASKCHECK) { if (uDst&0x8000) goto endtile; }
+                       if (CF_MASKCHECK || CF_BLEND) { uDst = le16_to_u16(*pDst); }
+                       if (CF_MASKCHECK) if (uDst&0x8000) { goto endtile; }
 
                        uSrc = data;
 
                        if (CF_BLEND)
                                uSrc = gpuBlending<CF_BLENDMODE, skip_uSrc_mask>(uSrc, uDst);
 
-                       if (CF_MASKSET) { *pDst = uSrc | 0x8000; }
-                       else            { *pDst = uSrc;          }
+                       if (CF_MASKSET) { *pDst = u16_to_le16(uSrc | 0x8000); }
+                       else            { *pDst = u16_to_le16(uSrc);          }
 
                        //senquack - Did not apply "Silent Hill" mask-bit fix to here.
                        // It is hard to tell from scarce documentation available and
@@ -319,7 +328,7 @@ endtile:
        }
 }
 
-static void TileNULL(u16 *pDst, u32 count, u16 data)
+static void TileNULL(le16_t *pDst, u32 count, u16 data)
 {
        #ifdef ENABLE_GPU_LOG_SUPPORT
                fprintf(stdout,"TileNULL()\n");
@@ -328,7 +337,7 @@ static void TileNULL(u16 *pDst, u32 count, u16 data)
 
 ///////////////////////////////////////////////////////////////////////////////
 //  Tiles innerloops driver
-typedef void (*PT)(u16 *pDst, u32 count, u16 data);
+typedef void (*PT)(le16_t *pDst, u32 count, u16 data);
 
 // Template instantiation helper macros
 #define TI(cf) gpuTileSpanFn<(cf)>
@@ -352,7 +361,7 @@ const PT gpuTileSpanDrivers[32] = {
 //  GPU Sprites innerloops generator
 
 template<int CF>
-static void gpuSpriteSpanFn(u16 *pDst, u32 count, u8* pTxt, u32 u0)
+static void gpuSpriteSpanFn(le16_t *pDst, u32 count, u8* pTxt, u32 u0)
 {
        // Blend func can save an operation if it knows uSrc MSB is unset.
        //  Untextured prims can always skip (source color always comes with MSB=0).
@@ -375,22 +384,22 @@ static void gpuSpriteSpanFn(u16 *pDst, u32 count, u8* pTxt, u32 u0)
                u0_mask <<= 1;
        }
 
-       const u16 *CBA_; if (CF_TEXTMODE!=3) CBA_ = gpu_unai.CBA;
+       const le16_t *CBA_; if (CF_TEXTMODE!=3) CBA_ = gpu_unai.CBA;
 
        do
        {
-               if (CF_MASKCHECK || CF_BLEND) { uDst = *pDst; }
+               if (CF_MASKCHECK || CF_BLEND) { uDst = le16_to_u16(*pDst); }
                if (CF_MASKCHECK) if (uDst&0x8000) { goto endsprite; }
 
                if (CF_TEXTMODE==1) {  //  4bpp (CLUT)
                        u8 rgb = pTxt[(u0 & u0_mask)>>1];
-                       uSrc = CBA_[(rgb>>((u0&1)<<2))&0xf];
+                       uSrc = le16_to_u16(CBA_[(rgb>>((u0&1)<<2))&0xf]);
                }
                if (CF_TEXTMODE==2) {  //  8bpp (CLUT)
-                       uSrc = CBA_[pTxt[u0 & u0_mask]];
+                       uSrc = le16_to_u16(CBA_[pTxt[u0 & u0_mask]]);
                }
                if (CF_TEXTMODE==3) {  // 16bpp
-                       uSrc = *(u16*)(&pTxt[u0 & u0_mask]);
+                       uSrc = le16_to_u16(*(le16_t*)(&pTxt[u0 & u0_mask]));
                }
 
                if (!uSrc) goto endsprite;
@@ -407,9 +416,9 @@ static void gpuSpriteSpanFn(u16 *pDst, u32 count, u8* pTxt, u32 u0)
                if (CF_BLEND && should_blend)
                        uSrc = gpuBlending<CF_BLENDMODE, skip_uSrc_mask>(uSrc, uDst);
 
-               if (CF_MASKSET)                                    { *pDst = uSrc | 0x8000; }
-               else if (!MSB_PRESERVED && (CF_BLEND || CF_LIGHT)) { *pDst = uSrc | srcMSB; }
-               else                                               { *pDst = uSrc;          }
+               if (CF_MASKSET)                                    { *pDst = u16_to_le16(uSrc | 0x8000); }
+               else if (!MSB_PRESERVED && (CF_BLEND || CF_LIGHT)) { *pDst = u16_to_le16(uSrc | srcMSB); }
+               else                                               { *pDst = u16_to_le16(uSrc);          }
 
 endsprite:
                u0 += (CF_TEXTMODE==3) ? 2 : 1;
@@ -418,7 +427,7 @@ endsprite:
        while (--count);
 }
 
-static void SpriteNULL(u16 *pDst, u32 count, u8* pTxt, u32 u0)
+static void SpriteNULL(le16_t *pDst, u32 count, u8* pTxt, u32 u0)
 {
        #ifdef ENABLE_GPU_LOG_SUPPORT
                fprintf(stdout,"SpriteNULL()\n");
@@ -429,7 +438,7 @@ static void SpriteNULL(u16 *pDst, u32 count, u8* pTxt, u32 u0)
 
 ///////////////////////////////////////////////////////////////////////////////
 //  Sprite innerloops driver
-typedef void (*PS)(u16 *pDst, u32 count, u8* pTxt, u32 u0);
+typedef void (*PS)(le16_t *pDst, u32 count, u8* pTxt, u32 u0);
 
 // Template instantiation helper macros
 #define TI(cf) gpuSpriteSpanFn<(cf)>
@@ -482,7 +491,7 @@ const PS gpuSpriteSpanDrivers[256] = {
 //             relevant blend/light headers.
 // (see README_senquack.txt)
 template<int CF>
-static void gpuPolySpanFn(const gpu_unai_t &gpu_unai, u16 *pDst, u32 count)
+static void gpuPolySpanFn(const gpu_unai_t &gpu_unai, le16_t *pDst, u32 count)
 {
        // Blend func can save an operation if it knows uSrc MSB is unset.
        //  Untextured prims can always skip this (src color MSB is always 0).
@@ -506,7 +515,7 @@ static void gpuPolySpanFn(const gpu_unai_t &gpu_unai, u16 *pDst, u32 count)
                                //  gravestone text at end of Medieval intro sequence. -senquack
                                //if (CF_BLITMASK) { if ((bMsk>>((((uintptr_t)pDst)>>1)&7))&1) { goto endpolynotextnogou; } }
 
-                               if (CF_BLEND || CF_MASKCHECK) uDst = *pDst;
+                               if (CF_BLEND || CF_MASKCHECK) uDst = le16_to_u16(*pDst);
                                if (CF_MASKCHECK) { if (uDst&0x8000) { goto endpolynotextnogou; } }
 
                                uSrc = pix15;
@@ -514,8 +523,8 @@ static void gpuPolySpanFn(const gpu_unai_t &gpu_unai, u16 *pDst, u32 count)
                                if (CF_BLEND)
                                        uSrc = gpuBlending<CF_BLENDMODE, skip_uSrc_mask>(uSrc, uDst);
 
-                               if (CF_MASKSET) { *pDst = uSrc | 0x8000; }
-                               else            { *pDst = uSrc;          }
+                               if (CF_MASKSET) { *pDst = u16_to_le16(uSrc | 0x8000); }
+                               else            { *pDst = u16_to_le16(uSrc);          }
 
 endpolynotextnogou:
                                pDst++;
@@ -524,8 +533,8 @@ endpolynotextnogou:
                else
                {
                        // UNTEXTURED, GOURAUD
-                       u32 l_gCol = gpu_unai.gCol;
-                       u32 l_gInc = gpu_unai.gInc;
+                       gcol_t l_gCol = gpu_unai.gCol;
+                       gcol_t l_gInc = gpu_unai.gInc;
 
                        do {
                                uint_fast16_t uDst, uSrc;
@@ -533,7 +542,7 @@ endpolynotextnogou:
                                // See note in above loop regarding CF_BLITMASK
                                //if (CF_BLITMASK) { if ((bMsk>>((((uintptr_t)pDst)>>1)&7))&1) goto endpolynotextgou; }
 
-                               if (CF_BLEND || CF_MASKCHECK) uDst = *pDst;
+                               if (CF_BLEND || CF_MASKCHECK) uDst = le16_to_u16(*pDst);
                                if (CF_MASKCHECK) { if (uDst&0x8000) goto endpolynotextgou; }
 
                                if (CF_DITHER) {
@@ -552,12 +561,12 @@ endpolynotextnogou:
                                                uSrc = gpuBlending<CF_BLENDMODE, skip_uSrc_mask>(uSrc, uDst);
                                }
 
-                               if (CF_MASKSET) { *pDst = uSrc | 0x8000; }
-                               else            { *pDst = uSrc;          }
+                               if (CF_MASKSET) { *pDst = u16_to_le16(uSrc | 0x8000); }
+                               else            { *pDst = u16_to_le16(uSrc);          }
 
 endpolynotextgou:
                                pDst++;
-                               l_gCol += l_gInc;
+                               l_gCol.raw += l_gInc.raw;
                        }
                        while (--count);
                }
@@ -575,13 +584,13 @@ endpolynotextgou:
                u32 l_u = gpu_unai.u & l_u_msk;   u32 l_v = gpu_unai.v & l_v_msk;
                s32 l_u_inc = gpu_unai.u_inc;     s32 l_v_inc = gpu_unai.v_inc;
 
-               const u16* TBA_ = gpu_unai.TBA;
-               const u16* CBA_; if (CF_TEXTMODE!=3) CBA_ = gpu_unai.CBA;
+               const le16_t* TBA_ = gpu_unai.TBA;
+               const le16_t* CBA_; if (CF_TEXTMODE!=3) CBA_ = gpu_unai.CBA;
 
                u8 r5, g5, b5;
                u8 r8, g8, b8;
 
-               u32 l_gInc, l_gCol;
+               gcol_t l_gInc, l_gCol;
 
                if (CF_LIGHT) {
                        if (CF_GOURAUD) {
@@ -603,7 +612,7 @@ endpolynotextgou:
                do
                {
                        if (CF_BLITMASK) { if ((bMsk>>((((uintptr_t)pDst)>>1)&7))&1) goto endpolytext; }
-                       if (CF_MASKCHECK || CF_BLEND) { uDst = *pDst; }
+                       if (CF_MASKCHECK || CF_BLEND) { uDst = le16_to_u16(*pDst); }
                        if (CF_MASKCHECK) if (uDst&0x8000) { goto endpolytext; }
 
                        //senquack - adapted to work with new 22.10 fixed point routines:
@@ -612,15 +621,15 @@ endpolynotextgou:
                                u32 tu=(l_u>>10);
                                u32 tv=(l_v<<1)&(0xff<<11);
                                u8 rgb=((u8*)TBA_)[tv+(tu>>1)];
-                               uSrc=CBA_[(rgb>>((tu&1)<<2))&0xf];
+                               uSrc=le16_to_u16(CBA_[(rgb>>((tu&1)<<2))&0xf]);
                                if (!uSrc) goto endpolytext;
                        }
                        if (CF_TEXTMODE==2) {  //  8bpp (CLUT)
-                               uSrc = CBA_[(((u8*)TBA_)[(l_u>>10)+((l_v<<1)&(0xff<<11))])];
+                               uSrc = le16_to_u16(CBA_[(((u8*)TBA_)[(l_u>>10)+((l_v<<1)&(0xff<<11))])]);
                                if (!uSrc) goto endpolytext;
                        }
                        if (CF_TEXTMODE==3) {  // 16bpp
-                               uSrc = TBA_[(l_u>>10)+((l_v)&(0xff<<10))];
+                               uSrc = le16_to_u16(TBA_[(l_u>>10)+((l_v)&(0xff<<10))]);
                                if (!uSrc) goto endpolytext;
                        }
 
@@ -658,20 +667,21 @@ endpolynotextgou:
                                        uSrc = gpuBlending<CF_BLENDMODE, skip_uSrc_mask>(uSrc, uDst);
                        }
 
-                       if (CF_MASKSET)                                    { *pDst = uSrc | 0x8000; }
-                       else if (!MSB_PRESERVED && (CF_BLEND || CF_LIGHT)) { *pDst = uSrc | srcMSB; }
-                       else                                               { *pDst = uSrc;          }
+                       if (CF_MASKSET)                                    { *pDst = u16_to_le16(uSrc | 0x8000); }
+                       else if (!MSB_PRESERVED && (CF_BLEND || CF_LIGHT)) { *pDst = u16_to_le16(uSrc | srcMSB); }
+                       else                                               { *pDst = u16_to_le16(uSrc);          }
 endpolytext:
                        pDst++;
                        l_u = (l_u + l_u_inc) & l_u_msk;
                        l_v = (l_v + l_v_inc) & l_v_msk;
-                       if (CF_LIGHT && CF_GOURAUD) l_gCol += l_gInc;
+                       if (CF_LIGHT && CF_GOURAUD)
+                               l_gCol.raw += l_gInc.raw;
                }
                while (--count);
        }
 }
 
-static void PolyNULL(const gpu_unai_t &gpu_unai, u16 *pDst, u32 count)
+static void PolyNULL(const gpu_unai_t &gpu_unai, le16_t *pDst, u32 count)
 {
        #ifdef ENABLE_GPU_LOG_SUPPORT
                fprintf(stdout,"PolyNULL()\n");
@@ -680,7 +690,7 @@ static void PolyNULL(const gpu_unai_t &gpu_unai, u16 *pDst, u32 count)
 
 ///////////////////////////////////////////////////////////////////////////////
 //  Polygon innerloops driver
-typedef void (*PP)(const gpu_unai_t &gpu_unai, u16 *pDst, u32 count);
+typedef void (*PP)(const gpu_unai_t &gpu_unai, le16_t *pDst, u32 count);
 
 // Template instantiation helper macros
 #define TI(cf) gpuPolySpanFn<(cf)>
@@ -727,3 +737,5 @@ const PP gpuPolySpanDrivers[2048] = {
 #undef TI
 #undef TN
 #undef TIBLOCK
+
+#endif /* __GPU_UNAI_GPU_INNER_H__ */