From: Brian Paul Date: Sat, 24 Jan 2009 00:30:54 +0000 (-0700) Subject: swrast: updates for GL_NV_texture_env_combine4 X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=2d508c1d5c53dc475e5262593dd4dac5575a6b08;p=mesa.git swrast: updates for GL_NV_texture_env_combine4 --- diff --git a/src/mesa/swrast/s_texcombine.c b/src/mesa/swrast/s_texcombine.c index 632d650007e..df6efad66c1 100644 --- a/src/mesa/swrast/s_texcombine.c +++ b/src/mesa/swrast/s_texcombine.c @@ -1,8 +1,9 @@ /* * Mesa 3-D graphics library - * Version: 6.5.1 + * Version: 7.5 * - * Copyright (C) 1999-2006 Brian Paul All Rights Reserved. + * Copyright (C) 1999-2008 Brian Paul All Rights Reserved. + * Copyright (C) 2009 VMware, Inc. All Rights Reserved. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), @@ -66,9 +67,9 @@ texture_combine( const GLcontext *ctx, GLuint unit, GLuint n, GLchan (*rgba)[4] ) { const struct gl_texture_unit *textureUnit = &(ctx->Texture.Unit[unit]); - const GLchan (*argRGB [3])[4]; - const GLchan (*argA [3])[4]; - const GLuint RGBshift = textureUnit->_CurrentCombine->ScaleShiftRGB; + const GLchan (*argRGB [4])[4]; + const GLchan (*argA [4])[4]; + const GLint RGBshift = textureUnit->_CurrentCombine->ScaleShiftRGB; const GLuint Ashift = textureUnit->_CurrentCombine->ScaleShiftA; #if CHAN_TYPE == GL_FLOAT const GLchan RGBmult = (GLfloat) (1 << RGBshift); @@ -80,7 +81,7 @@ texture_combine( const GLcontext *ctx, GLuint unit, GLuint n, static const GLchan zero[4] = { 0, 0, 0, 0 }; const GLuint numColorArgs = textureUnit->_CurrentCombine->_NumArgsRGB; const GLuint numAlphaArgs = textureUnit->_CurrentCombine->_NumArgsA; - GLchan ccolor[3][MAX_WIDTH][4]; + GLchan ccolor[4][MAX_WIDTH][4]; GLuint i, j; ASSERT(ctx->Extensions.EXT_texture_env_combine || @@ -98,7 +99,7 @@ texture_combine( const GLcontext *ctx, GLuint unit, GLuint n, */ /* - * Do operand setup for up to 3 operands. Loop over the terms. + * Do operand setup for up to 4 operands. Loop over the terms. */ for (j = 0; j < numColorArgs; j++) { const GLenum srcRGB = textureUnit->_CurrentCombine->SourceRGB[j]; @@ -295,7 +296,36 @@ texture_combine( const GLcontext *ctx, GLuint unit, GLuint n, } break; case GL_ADD: - { + if (textureUnit->EnvMode == GL_COMBINE4_NV) { + /* (a * b) + (c * d) */ + const GLchan (*arg0)[4] = (const GLchan (*)[4]) argRGB[0]; + const GLchan (*arg1)[4] = (const GLchan (*)[4]) argRGB[1]; + const GLchan (*arg2)[4] = (const GLchan (*)[4]) argRGB[2]; + const GLchan (*arg3)[4] = (const GLchan (*)[4]) argRGB[3]; + for (i = 0; i < n; i++) { +#if CHAN_TYPE == GL_FLOAT + rgba[i][RCOMP] = (arg0[i][RCOMP] * arg1[i][RCOMP] + + arg2[i][RCOMP] * arg3[i][RCOMP]) * RGBmult; + rgba[i][GCOMP] = (arg0[i][GCOMP] * arg1[i][GCOMP] + + arg2[i][GCOMP] * arg3[i][GCOMP]) * RGBmult; + rgba[i][BCOMP] = (arg0[i][BCOMP] * arg1[i][BCOMP] + + arg2[i][BCOMP] * arg3[i][BCOMP]) * RGBmult; +#else + const GLint shift = CHAN_BITS - RGBshift; + GLint r = (PROD(arg0[i][RCOMP], arg1[i][RCOMP]) >> shift) + + (PROD(arg2[i][RCOMP], arg3[i][RCOMP]) >> shift); + GLint g = (PROD(arg0[i][GCOMP], arg1[i][GCOMP]) >> shift) + + (PROD(arg2[i][GCOMP], arg3[i][GCOMP]) >> shift); + GLint b = (PROD(arg0[i][BCOMP], arg1[i][BCOMP]) >> shift) + + (PROD(arg2[i][BCOMP], arg3[i][BCOMP]) >> shift); + rgba[i][RCOMP] = (GLchan) MIN2(r, CHAN_MAX); + rgba[i][GCOMP] = (GLchan) MIN2(g, CHAN_MAX); + rgba[i][BCOMP] = (GLchan) MIN2(b, CHAN_MAX); +#endif + } + } + else { + /* 2-term addition */ const GLchan (*arg0)[4] = (const GLchan (*)[4]) argRGB[0]; const GLchan (*arg1)[4] = (const GLchan (*)[4]) argRGB[1]; for (i = 0; i < n; i++) { @@ -315,7 +345,37 @@ texture_combine( const GLcontext *ctx, GLuint unit, GLuint n, } break; case GL_ADD_SIGNED: - { + if (textureUnit->EnvMode == GL_COMBINE4_NV) { + /* (a * b) + (c * d) - 0.5 */ + const GLchan (*arg0)[4] = (const GLchan (*)[4]) argRGB[0]; + const GLchan (*arg1)[4] = (const GLchan (*)[4]) argRGB[1]; + const GLchan (*arg2)[4] = (const GLchan (*)[4]) argRGB[2]; + const GLchan (*arg3)[4] = (const GLchan (*)[4]) argRGB[3]; + for (i = 0; i < n; i++) { +#if CHAN_TYPE == GL_FLOAT + rgba[i][RCOMP] = (arg0[i][RCOMP] + arg1[i][RCOMP] * + arg2[i][RCOMP] + arg3[i][RCOMP] - 0.5) * RGBmult; + rgba[i][GCOMP] = (arg0[i][GCOMP] + arg1[i][GCOMP] * + arg2[i][GCOMP] + arg3[i][GCOMP] - 0.5) * RGBmult; + rgba[i][BCOMP] = (arg0[i][BCOMP] + arg1[i][BCOMP] * + arg2[i][BCOMP] + arg3[i][BCOMP] - 0.5) * RGBmult; +#else + GLint r = (((PROD(arg0[i][RCOMP], arg1[i][RCOMP]) + + PROD(arg2[i][RCOMP], arg3[i][RCOMP])) >> CHAN_BITS) - half) + << RGBshift; + GLint g = (((PROD(arg0[i][GCOMP], arg1[i][GCOMP]) + + PROD(arg2[i][GCOMP], arg3[i][GCOMP])) >> CHAN_BITS) - half) + << RGBshift; + GLint b = (((PROD(arg0[i][BCOMP], arg1[i][BCOMP]) + + PROD(arg2[i][BCOMP], arg3[i][BCOMP])) >> CHAN_BITS) - half) + << RGBshift; + rgba[i][RCOMP] = (GLchan) CLAMP(r, 0, CHAN_MAX); + rgba[i][GCOMP] = (GLchan) CLAMP(g, 0, CHAN_MAX); + rgba[i][BCOMP] = (GLchan) CLAMP(b, 0, CHAN_MAX); +#endif + } + } + else { const GLchan (*arg0)[4] = (const GLchan (*)[4]) argRGB[0]; const GLchan (*arg1)[4] = (const GLchan (*)[4]) argRGB[1]; for (i = 0; i < n; i++) { @@ -324,9 +384,9 @@ texture_combine( const GLcontext *ctx, GLuint unit, GLuint n, rgba[i][GCOMP] = (arg0[i][GCOMP] + arg1[i][GCOMP] - 0.5) * RGBmult; rgba[i][BCOMP] = (arg0[i][BCOMP] + arg1[i][BCOMP] - 0.5) * RGBmult; #else - GLint r = (GLint) arg0[i][RCOMP] + (GLint) arg1[i][RCOMP] -half; - GLint g = (GLint) arg0[i][GCOMP] + (GLint) arg1[i][GCOMP] -half; - GLint b = (GLint) arg0[i][BCOMP] + (GLint) arg1[i][BCOMP] -half; + GLint r = (GLint) arg0[i][RCOMP] + (GLint) arg1[i][RCOMP] - half; + GLint g = (GLint) arg0[i][GCOMP] + (GLint) arg1[i][GCOMP] - half; + GLint b = (GLint) arg0[i][BCOMP] + (GLint) arg1[i][BCOMP] - half; r = (r < 0) ? 0 : r << RGBshift; g = (g < 0) ? 0 : g << RGBshift; b = (b < 0) ? 0 : b << RGBshift; @@ -573,9 +633,28 @@ texture_combine( const GLcontext *ctx, GLuint unit, GLuint n, } break; case GL_ADD: - { + if (textureUnit->EnvMode == GL_COMBINE4_NV) { + /* (a * b) + (c * d) */ + const GLchan (*arg0)[4] = (const GLchan (*)[4]) argA[0]; + const GLchan (*arg1)[4] = (const GLchan (*)[4]) argA[1]; + const GLchan (*arg2)[4] = (const GLchan (*)[4]) argA[2]; + const GLchan (*arg3)[4] = (const GLchan (*)[4]) argA[3]; + for (i = 0; i < n; i++) { +#if CHAN_TYPE == GL_FLOAT + rgba[i][ACOMP] = (arg0[i][ACOMP] * arg1[i][ACOMP] + + arg2[i][ACOMP] * arg3[i][ACOMP]) * Amult; +#else + const GLint shift = CHAN_BITS - Ashift; + GLint a = (PROD(arg0[i][ACOMP], arg1[i][ACOMP]) >> shift) + + (PROD(arg2[i][ACOMP], arg3[i][ACOMP]) >> shift); + rgba[i][ACOMP] = (GLchan) MIN2(a, CHAN_MAX); +#endif + } + } + else { + /* two-term add */ const GLchan (*arg0)[4] = (const GLchan (*)[4]) argA[0]; - const GLchan (*arg1)[4] = (const GLchan (*)[4]) argA[1]; + const GLchan (*arg1)[4] = (const GLchan (*)[4]) argA[1]; for (i = 0; i < n; i++) { #if CHAN_TYPE == GL_FLOAT rgba[i][ACOMP] = (arg0[i][ACOMP] + arg1[i][ACOMP]) * Amult; @@ -587,7 +666,27 @@ texture_combine( const GLcontext *ctx, GLuint unit, GLuint n, } break; case GL_ADD_SIGNED: - { + if (textureUnit->EnvMode == GL_COMBINE4_NV) { + /* (a * b) + (c * d) - 0.5 */ + const GLchan (*arg0)[4] = (const GLchan (*)[4]) argA[0]; + const GLchan (*arg1)[4] = (const GLchan (*)[4]) argA[1]; + const GLchan (*arg2)[4] = (const GLchan (*)[4]) argA[2]; + const GLchan (*arg3)[4] = (const GLchan (*)[4]) argA[3]; + for (i = 0; i < n; i++) { +#if CHAN_TYPE == GL_FLOAT + rgba[i][ACOMP] = (arg0[i][ACOMP] * arg1[i][ACOMP] + + arg2[i][ACOMP] * arg3[i][ACOMP] - + 0.5) * Amult; +#else + GLint a = (((PROD(arg0[i][ACOMP], arg1[i][ACOMP]) + + PROD(arg2[i][ACOMP], arg3[i][ACOMP])) >> CHAN_BITS) - half) + << Ashift; + rgba[i][ACOMP] = (GLchan) CLAMP(a, 0, CHAN_MAX); +#endif + } + } + else { + /* a + b - 0.5 */ const GLchan (*arg0)[4] = (const GLchan (*)[4]) argA[0]; const GLchan (*arg1)[4] = (const GLchan (*)[4]) argA[1]; for (i = 0; i < n; i++) { @@ -596,7 +695,7 @@ texture_combine( const GLcontext *ctx, GLuint unit, GLuint n, #else GLint a = (GLint) arg0[i][ACOMP] + (GLint) arg1[i][ACOMP] -half; a = (a < 0) ? 0 : a << Ashift; - rgba[i][ACOMP] = (GLchan) MIN2(a, CHAN_MAX); + rgba[i][ACOMP] = (GLchan) CLAMP(a, 0, CHAN_MAX); #endif } } diff --git a/src/mesa/swrast/s_triangle.c b/src/mesa/swrast/s_triangle.c index a2e8433e271..5d232487f30 100644 --- a/src/mesa/swrast/s_triangle.c +++ b/src/mesa/swrast/s_triangle.c @@ -1070,7 +1070,8 @@ _swrast_choose_triangle( GLcontext *ctx ) && minFilter == magFilter && ctx->Light.Model.ColorControl == GL_SINGLE_COLOR && !swrast->_FogEnabled - && ctx->Texture.Unit[0].EnvMode != GL_COMBINE_EXT) { + && ctx->Texture.Unit[0].EnvMode != GL_COMBINE_EXT + && ctx->Texture.Unit[0].EnvMode != GL_COMBINE4_NV) { if (ctx->Hint.PerspectiveCorrection==GL_FASTEST) { if (minFilter == GL_NEAREST && format == MESA_FORMAT_RGB