From db19ae89f293282711dd7e1e77b844b4aa6d8ed9 Mon Sep 17 00:00:00 2001 From: Keith Whitwell Date: Thu, 13 Jan 2005 14:38:17 +0000 Subject: Emit constant colors for texunit 1 blending. Change comments and some code to match naming used in the docs. --- src/mesa/drivers/dri/unichrome/via_context.h | 3 + src/mesa/drivers/dri/unichrome/via_state.c | 5 +- src/mesa/drivers/dri/unichrome/via_texcombine.c | 89 ++++++++++++++----------- 3 files changed, 56 insertions(+), 41 deletions(-) (limited to 'src/mesa') diff --git a/src/mesa/drivers/dri/unichrome/via_context.h b/src/mesa/drivers/dri/unichrome/via_context.h index 81cf62660d..b8a58cc8df 100644 --- a/src/mesa/drivers/dri/unichrome/via_context.h +++ b/src/mesa/drivers/dri/unichrome/via_context.h @@ -222,6 +222,9 @@ struct via_context_t { GLuint regHTXnTBLRCb_1; GLuint regHTXnTBLRAa_1; GLuint regHTXnTBLRFog_1; + GLuint regHTXnTBLRCa_1; + GLuint regHTXnTBLRCc_1; + GLuint regHTXnTBLRCbias_1; int vertexSize; int hwVertexSize; diff --git a/src/mesa/drivers/dri/unichrome/via_state.c b/src/mesa/drivers/dri/unichrome/via_state.c index a1b5a0ac3e..4fd6f05806 100644 --- a/src/mesa/drivers/dri/unichrome/via_state.c +++ b/src/mesa/drivers/dri/unichrome/via_state.c @@ -435,7 +435,7 @@ void viaEmitState(viaContextPtr vmesa) ADVANCE_RING(); } - BEGIN_RING(9); + BEGIN_RING(12); OUT_RING( (HC_SubA_HTXnTB << 24) | vmesa->regHTXnTB_1 ); OUT_RING( (HC_SubA_HTXnMPMD << 24) | vmesa->regHTXnMPMD_1 ); OUT_RING( (HC_SubA_HTXnTBLCsat << 24) | vmesa->regHTXnTBLCsat_1 ); @@ -445,6 +445,9 @@ void viaEmitState(viaContextPtr vmesa) OUT_RING( (HC_SubA_HTXnTBLRCb << 24) | vmesa->regHTXnTBLRCb_1 ); OUT_RING( (HC_SubA_HTXnTBLRAa << 24) | vmesa->regHTXnTBLRAa_1 ); OUT_RING( (HC_SubA_HTXnTBLRFog << 24) | vmesa->regHTXnTBLRFog_1 ); + OUT_RING( (HC_SubA_HTXnTBLRCa << 24) | vmesa->regHTXnTBLRCa_1 ); + OUT_RING( (HC_SubA_HTXnTBLRCc << 24) | vmesa->regHTXnTBLRCc_1 ); + OUT_RING( (HC_SubA_HTXnTBLRCbias << 24) | vmesa->regHTXnTBLRCbias_1 ); ADVANCE_RING(); if (t->regTexFM == HC_HTXnFM_Index8) { diff --git a/src/mesa/drivers/dri/unichrome/via_texcombine.c b/src/mesa/drivers/dri/unichrome/via_texcombine.c index 6e48123610..ccdde9709f 100644 --- a/src/mesa/drivers/dri/unichrome/via_texcombine.c +++ b/src/mesa/drivers/dri/unichrome/via_texcombine.c @@ -57,8 +57,8 @@ #define INPUT_A_SHIFT 14 #define INPUT_B_SHIFT 7 #define INPUT_C_SHIFT 0 -#define INPUT_BiasC_SHIFT 14 -#define INPUT_BiasA_SHIFT 3 +#define INPUT_CBias_SHIFT 14 +#define INPUT_ABias_SHIFT 3 #define CONST_ONE (HC_XTC_0 | HC_XTC_InvTOPC) @@ -97,6 +97,10 @@ static const unsigned a_shift_table[3] = { * textures. This was also the case with the code that Via supplied. It * also fails for \c GL_REPLACE with \c GL_RGBA textures. Everything else * that texenv tests looks good. + * + * \bug + * KW: needs attention to the case where texunit 1 is enabled but + * texunit 0 is not. */ void viaTexCombineState( viaContextPtr vmesa, @@ -140,25 +144,25 @@ viaTexCombineState( viaContextPtr vmesa, color_arg[i] = HC_XTC_HTXnTBLRC; switch( op ) { - case 0: - constant_color[i] = ((env_color[0] << 16) - | (env_color[1] << 8) - | env_color[2]); + case 0: /* GL_SRC_COLOR */ + constant_color[i] = ((env_color[0] << 16) | + (env_color[1] << 8) | + env_color[2]); break; - case 1: - constant_color[i] = ~((env_color[0] << 16) - | (env_color[1] << 8) - | env_color[2]) & 0x00ffffff; + case 1: /* GL_ONE_MINUS_SRC_COLOR */ + constant_color[i] = ~((env_color[0] << 16) | + (env_color[1] << 8) | + env_color[2]) & 0x00ffffff; break; - case 2: - constant_color[i] = ((env_color[3] << 16) - | (env_color[3] << 8) - | env_color[3]); + case 2: /* GL_SRC_ALPHA */ + constant_color[i] = ((env_color[3] << 16) | + (env_color[3] << 8) | + env_color[3]); break; - case 3: - constant_color[i] = ~((env_color[3] << 16) - | (env_color[3] << 8) - | env_color[3]) & 0x00ffffff; + case 3: /* GL_ONE_MINUS_SRC_ALPHA */ + constant_color[i] = ~((env_color[3] << 16) | + (env_color[3] << 8) | + env_color[3]) & 0x00ffffff; break; } break; @@ -200,7 +204,7 @@ viaTexCombineState( viaContextPtr vmesa, /* On the Unichrome, all combine operations take on some form of: * - * A * (B op Bias) + C + * (xA * (xB op xC) + xBias) << xShift * * 'op' can be selected as add, subtract, min, max, or mask. The min, max * and mask modes are currently unused. With the exception of DOT3, all @@ -212,14 +216,14 @@ viaTexCombineState( viaContextPtr vmesa, alpha = HC_HTXnTBLAsat_MASK; switch( combine->ModeRGB ) { - /* A = 0, B = 0, C = arg0, Bias = 0 + /* Ca = 0, Cb = 0, Cc = 0, Cbias = arg0 */ case GL_REPLACE: - bias |= (color_arg[0] << INPUT_BiasC_SHIFT); + bias |= (color_arg[0] << INPUT_CBias_SHIFT); ordered_constant_color[3] = constant_color[0]; break; - /* A = arg[0], B = arg[1], C = 0, Bias = 0 + /* Ca = arg[0], Cb = arg[1], Cc = 0, Cbias = 0 */ case GL_MODULATE: color |= (color_arg[0] << INPUT_A_SHIFT) @@ -229,23 +233,23 @@ viaTexCombineState( viaContextPtr vmesa, ordered_constant_color[1] = constant_color[1]; break; - /* A = 1.0, B = arg[0], C = 0, Bias = arg[1] + /* Ca = 1.0, Cb = arg[0], Cc = 0, Cbias = arg[1] */ case GL_ADD: case GL_SUBTRACT: - if ( combine->ModeRGB == GL_SUBTRACT ) { + if ( combine->ModeRGCb == GL_SUBTRACT ) { op |= HC_HTXnTBLCop_Sub; } color |= (color_arg[0] << INPUT_B_SHIFT) | (CONST_ONE << INPUT_A_SHIFT); - bias |= (color_arg[1] << INPUT_BiasC_SHIFT); + bias |= (color_arg[1] << INPUT_CBias_SHIFT); ordered_constant_color[1] = constant_color[0]; ordered_constant_color[3] = constant_color[1]; break; - /* A = 0, B = arg[0], C = arg[1], Bias = 0.5 + /* Ca = 0, Cb = arg[0], Cc = arg[1], Cbias = 0.5 */ case GL_ADD_SIGNED: color |= (color_arg[0] << INPUT_B_SHIFT) @@ -258,7 +262,7 @@ viaTexCombineState( viaContextPtr vmesa, ordered_constant_color[3] = 0x00808080; break; - /* A = arg[2], B = arg[0], C = arg[1], Bias = arg[1] + /* Ca = arg[2], Cb = arg[0], Cc = arg[1], Cbias = arg[1] */ case GL_INTERPOLATE: op |= HC_HTXnTBLCop_Sub; @@ -266,7 +270,7 @@ viaTexCombineState( viaContextPtr vmesa, color |= (color_arg[2] << INPUT_A_SHIFT) | (color_arg[0] << INPUT_B_SHIFT) | (color_arg[1] << INPUT_C_SHIFT); - bias |= (color_arg[1] << INPUT_BiasC_SHIFT); + bias |= (color_arg[1] << INPUT_CBias_SHIFT); ordered_constant_color[0] = constant_color[2]; ordered_constant_color[1] = constant_color[0]; @@ -298,27 +302,27 @@ viaTexCombineState( viaContextPtr vmesa, */ switch( combine->ModeA ) { - /* A = 0, B = 0, C = 0, Bias = arg0 + /* Aa = 0, Ab = 0, Ac = 0, Abias = arg0 */ case GL_REPLACE: - bias |= (alpha_arg[0] << INPUT_BiasA_SHIFT); + bias |= (alpha_arg[0] << INPUT_ABias_SHIFT); alpha |= (HC_XTA_HTXnTBLRA << INPUT_A_SHIFT) | (HC_XTA_HTXnTBLRA << INPUT_B_SHIFT) | (HC_XTA_HTXnTBLRA << INPUT_C_SHIFT); break; - /* A = arg[0], B = arg[1], C = 0, Bias = 0 + /* Aa = arg[0], Ab = arg[1], Ac = 0, Abias = 0 */ case GL_MODULATE: alpha |= (alpha_arg[1] << INPUT_A_SHIFT) - | (alpha_arg[0] << INPUT_B_SHIFT) - | (HC_XTA_HTXnTBLRA << INPUT_C_SHIFT); + | (alpha_arg[0] << INPUT_B_SHIFT) + | (HC_XTA_HTXnTBLRA << INPUT_C_SHIFT); - bias |= (HC_XTA_HTXnTBLRA << INPUT_BiasA_SHIFT); + bias |= (HC_XTA_HTXnTBLRA << INPUT_ABias_SHIFT); break; - /* A = 0, B = arg[0], C = 0, Bias = arg[1] + /* Aa = 0, Ab = arg[0], Ac = 0, Abias = arg[1] */ case GL_ADD: case GL_SUBTRACT: @@ -329,22 +333,22 @@ viaTexCombineState( viaContextPtr vmesa, alpha |= (HC_XTA_HTXnTBLRA << INPUT_A_SHIFT) | (alpha_arg[0] << INPUT_B_SHIFT) | (HC_XTA_HTXnTBLRA << INPUT_C_SHIFT); - bias |= (alpha_arg[1] << INPUT_BiasA_SHIFT); + bias |= (alpha_arg[1] << INPUT_ABias_SHIFT); break; - /* A = 0, B = arg[0], C = arg[1], Bias = 0.5 + /* Aa = 0, Ab = arg[0], Ac = arg[1], Abias = 0.5 */ case GL_ADD_SIGNED: op |= HC_HTXnTBLAop_Sub; alpha |= (alpha_arg[0] << INPUT_B_SHIFT) | (alpha_arg[1] << INPUT_C_SHIFT); - bias |= (HC_XTA_HTXnTBLRA << INPUT_BiasA_SHIFT); + bias |= (HC_XTA_HTXnTBLRA << INPUT_ABias_SHIFT); bias_alpha = 0x00000080; break; - /* A = arg[2], B = arg[0], C = arg[1], Bias = arg[1] + /* Aa = arg[2], Ab = arg[0], Ac = arg[1], Abias = arg[1] */ case GL_INTERPOLATE: op |= HC_HTXnTBLAop_Sub; @@ -352,7 +356,7 @@ viaTexCombineState( viaContextPtr vmesa, alpha |= (alpha_arg[2] << INPUT_A_SHIFT) | (alpha_arg[0] << INPUT_B_SHIFT) | (alpha_arg[1] << INPUT_C_SHIFT); - bias |= (alpha_arg[1] << INPUT_BiasA_SHIFT); + bias |= (alpha_arg[1] << INPUT_ABias_SHIFT); break; } @@ -380,6 +384,11 @@ viaTexCombineState( viaContextPtr vmesa, vmesa->regHTXnTBLAsat_1 = alpha; vmesa->regHTXnTBLCop_1 = op | bias; vmesa->regHTXnTBLRAa_1 = bias_alpha | (constant_alpha << 16); + + vmesa->regHTXnTBLRCa_1 = ordered_constant_color[0]; + vmesa->regHTXnTBLRCb_1 = ordered_constant_color[1]; + vmesa->regHTXnTBLRCc_1 = ordered_constant_color[2]; + vmesa->regHTXnTBLRCbias_1 = ordered_constant_color[3]; } } -- cgit v1.2.3