diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/mesa/swrast/s_blend.c | 28 | ||||
| -rw-r--r-- | src/mesa/x86/mmx_blend.S | 41 |
2 files changed, 31 insertions, 38 deletions
diff --git a/src/mesa/swrast/s_blend.c b/src/mesa/swrast/s_blend.c index f37a44015f1..5fa76322dce 100644 --- a/src/mesa/swrast/s_blend.c +++ b/src/mesa/swrast/s_blend.c @@ -1,4 +1,4 @@ -/* $Id: s_blend.c,v 1.15 2002/04/02 16:16:45 brianp Exp $ */ +/* $Id: s_blend.c,v 1.16 2002/04/02 23:36:51 brianp Exp $ */ /* * Mesa 3-D graphics library @@ -138,33 +138,23 @@ blend_transparency( GLcontext *ctx, GLuint n, const GLubyte mask[], GLint temp; #define DIV255(X) (temp = (X), ((temp << 8) + temp + 256) >> 16) #endif -#if 0 - const GLint s = CHAN_MAX - t; - const GLint r = DIV255(rgba[i][RCOMP] * t + dest[i][RCOMP] * s); - const GLint g = DIV255(rgba[i][GCOMP] * t + dest[i][GCOMP] * s); - const GLint b = DIV255(rgba[i][BCOMP] * t + dest[i][BCOMP] * s); - const GLint a = DIV255(rgba[i][ACOMP] * t + dest[i][ACOMP] * s); -#else const GLint r = DIV255((rgba[i][RCOMP] - dest[i][RCOMP]) * t) + dest[i][RCOMP]; const GLint g = DIV255((rgba[i][GCOMP] - dest[i][GCOMP]) * t) + dest[i][GCOMP]; const GLint b = DIV255((rgba[i][BCOMP] - dest[i][BCOMP]) * t) + dest[i][BCOMP]; const GLint a = DIV255((rgba[i][ACOMP] - dest[i][ACOMP]) * t) + dest[i][ACOMP]; -#endif #undef DIV255 #elif CHAN_BITS == 16 const GLfloat tt = (GLfloat) t / CHAN_MAXF; - const GLfloat s = 1.0 - tt; - const GLint r = (GLint) (rgba[i][RCOMP] * tt + dest[i][RCOMP] * s); - const GLint g = (GLint) (rgba[i][GCOMP] * tt + dest[i][GCOMP] * s); - const GLint b = (GLint) (rgba[i][BCOMP] * tt + dest[i][BCOMP] * s); - const GLint a = (GLint) (rgba[i][ACOMP] * tt + dest[i][ACOMP] * s); + const GLint r = (GLint) ((rgba[i][RCOMP] - dest[i][RCOMP]) * tt + dest[i][RCOMP]); + const GLint g = (GLint) ((rgba[i][GCOMP] - dest[i][GCOMP]) * tt + dest[i][GCOMP]); + const GLint b = (GLint) ((rgba[i][BCOMP] - dest[i][BCOMP]) * tt + dest[i][BCOMP]); + const GLint a = (GLint) ((rgba[i][ACOMP] - dest[i][ACOMP]) * tt + dest[i][ACOMP]); #else /* CHAN_BITS == 32 */ const GLfloat tt = (GLfloat) t / CHAN_MAXF; - const GLfloat s = 1.0 - tt; - const GLfloat r = rgba[i][RCOMP] * tt + dest[i][RCOMP] * s; - const GLfloat g = rgba[i][GCOMP] * tt + dest[i][GCOMP] * s; - const GLfloat b = rgba[i][BCOMP] * tt + dest[i][BCOMP] * s; - const GLfloat a = rgba[i][ACOMP] * tt + dest[i][ACOMP] * s; + const GLfloat r = (rgba[i][RCOMP] - dest[i][RCOMP]) * tt + dest[i][RCOMP]; + const GLfloat g = (rgba[i][GCOMP] - dest[i][GCOMP]) * tt + dest[i][GCOMP]; + const GLfloat b = (rgba[i][BCOMP] - dest[i][BCOMP]) * tt + dest[i][BCOMP]; + const GLfloat a = (rgba[i][ACOMP] - dest[i][ACOMP]) * tt + dest[i][ACOMP]; #endif #endif ASSERT(r <= CHAN_MAX); diff --git a/src/mesa/x86/mmx_blend.S b/src/mesa/x86/mmx_blend.S index 88908bd3455..c2be6812ec0 100644 --- a/src/mesa/x86/mmx_blend.S +++ b/src/mesa/x86/mmx_blend.S @@ -35,7 +35,7 @@ GLNAME( _mesa_mmx_blend_transparency ): MOV_L ( EDX, EAX ) AND_L ( CONST(4), EAX ) CMP_L ( CONST(8), EAX ) - JNE ( LLBL(GMBT_no_align) ) + JNE ( LLBL(GMBT_skip_runin) ) MOV_L ( REGOFF(20, EBP), EAX ) ADD_L ( CONST(3), EAX ) XOR_L ( EDX, EDX ) @@ -126,13 +126,15 @@ GLNAME( _mesa_mmx_blend_transparency ): ADD_L ( CONST(4), REGOFF(20, EBP) ) ADD_L ( CONST(4), REGOFF(24, EBP) ) DEC_L ( REGOFF(12, EBP) ) -LLBL(GMBT_skip_runin): + +LLBL (GMBT_skip_runin): CMP_L ( CONST(0), REGOFF(12, EBP) ) /* n == 0 */ - JE ( LLBL(GMBT_zero_length) ) + JE ( LLBL(GMBT_runout) ) MOV_L ( CONST(0), REGOFF(-28, EBP) ) + ALIGNTEXT4 -LLBL(GMBT_main_loop): +LLBL (GMBT_main_loop): MOV_L ( REGOFF(12, EBP), EDX ) MOV_L ( EDX, EAX ) @@ -140,19 +142,20 @@ LLBL(GMBT_main_loop): CMP_L ( EAX, REGOFF(-28, EBP) ) JB ( LLBL(GMBT_no_jump) ) JMP ( LLBL(GMBT_end_loop) ) + ALIGNTEXT16 -LLBL(GMBT_nojump): +LLBL (GMBT_no_jump): - MOV_L ( REGOFF(-28, EBP), EAX ) - LEA_L ( REGDIS(0,EAX,2), EDX ) - MOV_L ( REGOFF(16, EBP), EAX ) /* mask */ - CMP_B ( CONST(0), REGBI(EAX,EDX) ) + MOV_L ( REGOFF(-28, EBP), EAX ) /* eax = i */ + LEA_L ( REGDIS(0,EAX,2), EDX ) /* edx = i*2 */ + MOV_L ( REGOFF(16, EBP), EAX ) /* eax = mask */ + CMP_W ( CONST(0), REGBI(EAX,EDX) ) /* ((unsigned *) mask)[i] == 0 */ JE ( LLBL(GMBT_masked) ) - MOV_L ( REGOFF(-28, EBP), EAX ) + MOV_L ( REGOFF(-28, EBP), EAX ) /* eax = i */ MOV_L ( EAX, EDX ) - LEA_L ( REGDIS(0,EDX,8), ECX ) + LEA_L ( REGDIS(0,EDX,8), ECX ) /* ecx = i*8 */ MOV_L ( ECX, EAX ) - ADD_L ( REGOFF(20, EBP), EAX ) + ADD_L ( REGOFF(20, EBP), EAX ) MOV_L ( REGOFF(-28, EBP), EDX ) MOV_L ( EDX, ECX ) LEA_L ( REGDIS(0,ECX,8), EDX ) @@ -160,7 +163,7 @@ LLBL(GMBT_nojump): ADD_L ( REGOFF(24, EBP), ECX ) MOVQ ( REGIND(EAX), MM4 ) - PXOR ( MM5, MM5 ) + PXOR ( MM5, MM5 ) /* mm5 = 00 00 00 00 00 00 00 00 */ MOVQ ( MM4, MM1 ) MOVQ ( REGIND(ECX), MM7 ) PUNPCKLBW ( MM5, MM1 ) @@ -205,17 +208,16 @@ LLBL(GMBT_nojump): POR ( MM1, MM4 ) MOVQ ( MM4, REGIND(EAX) ) -LLBL(GMBT_masked): +LLBL (GMBT_masked): INC_L ( REGOFF(-28, EBP) ) JMP ( LLBL(GMBT_main_loop) ) -ALIGNTEXT16 -LLBL(GMBT_end_loop): - +ALIGNTEXT16 +LLBL (GMBT_end_loop): EMMS -LLBL(GMBT_runout): +LLBL (GMBT_runout): MOV_L ( REGOFF(12, EBP), EAX ) AND_L ( CONST(1), EAX ) @@ -349,7 +351,8 @@ LLBL(GMBT_runout): LEA_L ( REGOFF(-1, EAX), EDX ) MOV_B ( REGOFF(-32, EBP), AL ) MOV_B ( AL, REGIND(EDX) ) -LLBL(GMBT_skip_runout): + +LLBL (GMBT_skip_runout): MOV_L ( REGOFF(-56, EBP), EBX ) MOV_L ( EBP, ESP ) |