/* $XFree86: xc/lib/GL/mesa/src/drv/i830/i830_texstate.c,v 1.3 2002/12/10 01:26:53 dawes Exp $ */
-/*
- * Author:
- * Jeff Hartmann <jhartmann@2d3d.com>
+/**
+ * \file i830_texstate.c
+ *
+ * Heavily based on the I810 driver, which was written by Keith Whitwell.
*
- * Heavily based on the I810 driver, which was written by:
- * Keith Whitwell <keithw@tungstengraphics.com>
+ * \author Jeff Hartmann <jhartmann@2d3d.com>
+ * \author Keith Whitwell <keithw@tungstengraphics.com>
*/
#include "glheader.h"
/* ================================================================
* Texture combine functions
*/
-static __inline__ GLuint GetTexelOp(GLint unit)
-{
- switch(unit) {
- case 0: return TEXBLENDARG_TEXEL0;
- case 1: return TEXBLENDARG_TEXEL1;
- case 2: return TEXBLENDARG_TEXEL2;
- case 3: return TEXBLENDARG_TEXEL3;
- default: return TEXBLENDARG_TEXEL0;
- }
-}
-
-static void i830SetBlend_GL1_2(i830ContextPtr imesa, int curTex,
- GLenum envMode, GLenum format)
-{
- GLuint texel_op = GetTexelOp(curTex);
-
- if(I830_DEBUG&DEBUG_TEXTURE)
- fprintf(stderr, "%s %s %s unit (%d) texel_op(0x%x)\n",
- __FUNCTION__,
- _mesa_lookup_enum_by_nr(format),
- _mesa_lookup_enum_by_nr(envMode),
- curTex,
- texel_op);
-
- switch(envMode) {
- case GL_REPLACE:
- switch(format) {
- case GL_ALPHA:
- imesa->TexBlend[curTex][0] = (STATE3D_MAP_BLEND_OP_CMD(curTex) |
- TEXPIPE_COLOR |
- ENABLE_TEXOUTPUT_WRT_SEL |
- TEXOP_OUTPUT_CURRENT |
- DISABLE_TEX_CNTRL_STAGE |
- TEXOP_SCALE_1X |
- TEXOP_MODIFY_PARMS |
- TEXBLENDOP_ARG1);
- imesa->TexBlend[curTex][1] = (STATE3D_MAP_BLEND_OP_CMD(curTex) |
- TEXPIPE_ALPHA |
- ENABLE_TEXOUTPUT_WRT_SEL |
- TEXOP_OUTPUT_CURRENT |
- TEXOP_SCALE_1X |
- TEXOP_MODIFY_PARMS |
- TEXBLENDOP_ARG1);
- imesa->TexBlend[curTex][2] = (STATE3D_MAP_BLEND_ARG_CMD(curTex) |
- TEXPIPE_COLOR |
- TEXBLEND_ARG1 |
- TEXBLENDARG_MODIFY_PARMS |
- TEXBLENDARG_CURRENT);
- imesa->TexBlend[curTex][3] = (STATE3D_MAP_BLEND_ARG_CMD(curTex) |
- TEXPIPE_ALPHA |
- TEXBLEND_ARG1 |
- TEXBLENDARG_MODIFY_PARMS |
- texel_op);
- imesa->TexBlendColorPipeNum[curTex] = 0;
- imesa->TexBlendWordsUsed[curTex] = 4;
- break;
- case GL_LUMINANCE:
- case GL_RGB:
- case GL_YCBCR_MESA:
- imesa->TexBlend[curTex][0] = (STATE3D_MAP_BLEND_OP_CMD(curTex) |
- TEXPIPE_COLOR |
- ENABLE_TEXOUTPUT_WRT_SEL |
- TEXOP_OUTPUT_CURRENT |
- DISABLE_TEX_CNTRL_STAGE |
- TEXOP_SCALE_1X |
- TEXOP_MODIFY_PARMS |
- TEXBLENDOP_ARG1);
- imesa->TexBlend[curTex][1] = (STATE3D_MAP_BLEND_OP_CMD(curTex) |
- TEXPIPE_ALPHA |
- ENABLE_TEXOUTPUT_WRT_SEL |
- TEXOP_OUTPUT_CURRENT |
- TEXOP_SCALE_1X |
- TEXOP_MODIFY_PARMS |
- TEXBLENDOP_ARG1);
- imesa->TexBlend[curTex][2] = (STATE3D_MAP_BLEND_ARG_CMD(curTex) |
- TEXPIPE_COLOR |
- TEXBLEND_ARG1 |
- TEXBLENDARG_MODIFY_PARMS |
- texel_op);
- imesa->TexBlend[curTex][3] = (STATE3D_MAP_BLEND_ARG_CMD(curTex) |
- TEXPIPE_ALPHA |
- TEXBLEND_ARG1 |
- TEXBLENDARG_MODIFY_PARMS |
- TEXBLENDARG_CURRENT);
- imesa->TexBlendColorPipeNum[curTex] = 0;
- imesa->TexBlendWordsUsed[curTex] = 4;
- break;
-
- case GL_INTENSITY:
- case GL_LUMINANCE_ALPHA:
- case GL_RGBA:
- imesa->TexBlend[curTex][0] = (STATE3D_MAP_BLEND_OP_CMD(curTex) |
- TEXPIPE_COLOR |
- ENABLE_TEXOUTPUT_WRT_SEL |
- TEXOP_OUTPUT_CURRENT |
- DISABLE_TEX_CNTRL_STAGE |
- TEXOP_SCALE_1X |
- TEXOP_MODIFY_PARMS |
- TEXBLENDOP_ARG1);
- imesa->TexBlend[curTex][1] = (STATE3D_MAP_BLEND_OP_CMD(curTex) |
- TEXPIPE_ALPHA |
- ENABLE_TEXOUTPUT_WRT_SEL |
- TEXOP_OUTPUT_CURRENT |
- TEXOP_SCALE_1X |
- TEXOP_MODIFY_PARMS |
- TEXBLENDOP_ARG1);
- imesa->TexBlend[curTex][2] = (STATE3D_MAP_BLEND_ARG_CMD(curTex) |
- TEXPIPE_COLOR |
- TEXBLEND_ARG1 |
- TEXBLENDARG_MODIFY_PARMS |
- texel_op);
- imesa->TexBlend[curTex][3] = (STATE3D_MAP_BLEND_ARG_CMD(curTex) |
- TEXPIPE_ALPHA |
- TEXBLEND_ARG1 |
- TEXBLENDARG_MODIFY_PARMS |
- texel_op);
- imesa->TexBlendColorPipeNum[curTex] = 0;
- imesa->TexBlendWordsUsed[curTex] = 4;
- break;
- default:
- /* Always set to passthru if something is funny */
- imesa->TexBlend[curTex][0] = (STATE3D_MAP_BLEND_OP_CMD(curTex) |
- TEXPIPE_COLOR |
- ENABLE_TEXOUTPUT_WRT_SEL |
- TEXOP_OUTPUT_CURRENT |
- DISABLE_TEX_CNTRL_STAGE |
- TEXOP_SCALE_1X |
- TEXOP_MODIFY_PARMS |
- TEXBLENDOP_ARG1);
- imesa->TexBlend[curTex][1] = (STATE3D_MAP_BLEND_OP_CMD(curTex) |
- TEXPIPE_ALPHA |
- ENABLE_TEXOUTPUT_WRT_SEL |
- TEXOP_OUTPUT_CURRENT |
- TEXOP_SCALE_1X |
- TEXOP_MODIFY_PARMS |
- TEXBLENDOP_ARG1);
- imesa->TexBlend[curTex][2] = (STATE3D_MAP_BLEND_ARG_CMD(curTex) |
- TEXPIPE_COLOR |
- TEXBLEND_ARG1 |
- TEXBLENDARG_MODIFY_PARMS |
- TEXBLENDARG_CURRENT);
- imesa->TexBlend[curTex][3] = (STATE3D_MAP_BLEND_ARG_CMD(curTex) |
- TEXPIPE_ALPHA |
- TEXBLEND_ARG1 |
- TEXBLENDARG_MODIFY_PARMS |
- TEXBLENDARG_CURRENT);
- imesa->TexBlendColorPipeNum[curTex] = 0;
- imesa->TexBlendWordsUsed[curTex] = 4;
- break;
- }
- break;
-
- case GL_MODULATE:
- switch(format) {
- case GL_ALPHA:
- imesa->TexBlend[curTex][0] = (STATE3D_MAP_BLEND_OP_CMD(curTex) |
- TEXPIPE_COLOR |
- ENABLE_TEXOUTPUT_WRT_SEL |
- TEXOP_OUTPUT_CURRENT |
- DISABLE_TEX_CNTRL_STAGE |
- TEXOP_SCALE_1X |
- TEXOP_MODIFY_PARMS |
- TEXBLENDOP_ARG1);
- imesa->TexBlend[curTex][1] = (STATE3D_MAP_BLEND_OP_CMD(curTex) |
- TEXPIPE_ALPHA |
- ENABLE_TEXOUTPUT_WRT_SEL |
- TEXOP_OUTPUT_CURRENT |
- TEXOP_SCALE_1X |
- TEXOP_MODIFY_PARMS |
- TEXBLENDOP_MODULATE);
- imesa->TexBlend[curTex][2] = (STATE3D_MAP_BLEND_ARG_CMD(curTex) |
- TEXPIPE_COLOR |
- TEXBLEND_ARG1 |
- TEXBLENDARG_MODIFY_PARMS |
- TEXBLENDARG_CURRENT);
- imesa->TexBlend[curTex][3] = (STATE3D_MAP_BLEND_ARG_CMD(curTex) |
- TEXPIPE_ALPHA |
- TEXBLEND_ARG1 |
- TEXBLENDARG_MODIFY_PARMS |
- texel_op);
- imesa->TexBlend[curTex][4] = (STATE3D_MAP_BLEND_ARG_CMD(curTex) |
- TEXPIPE_ALPHA |
- TEXBLEND_ARG2 |
- TEXBLENDARG_MODIFY_PARMS |
- TEXBLENDARG_CURRENT);
- imesa->TexBlendColorPipeNum[curTex] = 0;
- imesa->TexBlendWordsUsed[curTex] = 5;
- break;
-
- case GL_LUMINANCE:
- case GL_RGB:
- case GL_YCBCR_MESA:
- imesa->TexBlend[curTex][0] = (STATE3D_MAP_BLEND_OP_CMD(curTex) |
- TEXPIPE_COLOR |
- ENABLE_TEXOUTPUT_WRT_SEL |
- TEXOP_OUTPUT_CURRENT |
- DISABLE_TEX_CNTRL_STAGE |
- TEXOP_SCALE_1X |
- TEXOP_MODIFY_PARMS |
- TEXBLENDOP_MODULATE);
- imesa->TexBlend[curTex][1] = (STATE3D_MAP_BLEND_OP_CMD(curTex) |
- TEXPIPE_ALPHA |
- ENABLE_TEXOUTPUT_WRT_SEL |
- TEXOP_OUTPUT_CURRENT |
- TEXOP_SCALE_1X |
- TEXOP_MODIFY_PARMS |
- TEXBLENDOP_ARG1);
- imesa->TexBlend[curTex][2] = (STATE3D_MAP_BLEND_ARG_CMD(curTex) |
- TEXPIPE_COLOR |
- TEXBLEND_ARG1 |
- TEXBLENDARG_MODIFY_PARMS |
- texel_op);
- imesa->TexBlend[curTex][3] = (STATE3D_MAP_BLEND_ARG_CMD(curTex) |
- TEXPIPE_COLOR |
- TEXBLEND_ARG2 |
- TEXBLENDARG_MODIFY_PARMS |
- TEXBLENDARG_CURRENT);
- imesa->TexBlend[curTex][4] = (STATE3D_MAP_BLEND_ARG_CMD(curTex) |
- TEXPIPE_ALPHA |
- TEXBLEND_ARG1 |
- TEXBLENDARG_MODIFY_PARMS |
- TEXBLENDARG_CURRENT);
- imesa->TexBlendColorPipeNum[curTex] = 0;
- imesa->TexBlendWordsUsed[curTex] = 5;
- break;
-
- case GL_INTENSITY:
- case GL_LUMINANCE_ALPHA:
- case GL_RGBA:
- imesa->TexBlend[curTex][0] = (STATE3D_MAP_BLEND_OP_CMD(curTex) |
- TEXPIPE_COLOR |
- ENABLE_TEXOUTPUT_WRT_SEL |
- TEXOP_OUTPUT_CURRENT |
- DISABLE_TEX_CNTRL_STAGE |
- TEXOP_SCALE_1X |
- TEXOP_MODIFY_PARMS |
- TEXBLENDOP_MODULATE);
- imesa->TexBlend[curTex][1] = (STATE3D_MAP_BLEND_OP_CMD(curTex) |
- TEXPIPE_ALPHA |
- ENABLE_TEXOUTPUT_WRT_SEL |
- TEXOP_OUTPUT_CURRENT |
- TEXOP_SCALE_1X |
- TEXOP_MODIFY_PARMS |
- TEXBLENDOP_MODULATE);
- imesa->TexBlend[curTex][2] = (STATE3D_MAP_BLEND_ARG_CMD(curTex) |
- TEXPIPE_COLOR |
- TEXBLEND_ARG1 |
- TEXBLENDARG_MODIFY_PARMS |
- texel_op);
- imesa->TexBlend[curTex][3] = (STATE3D_MAP_BLEND_ARG_CMD(curTex) |
- TEXPIPE_COLOR |
- TEXBLEND_ARG2 |
- TEXBLENDARG_MODIFY_PARMS |
- TEXBLENDARG_CURRENT);
- imesa->TexBlend[curTex][4] = (STATE3D_MAP_BLEND_ARG_CMD(curTex) |
- TEXPIPE_ALPHA |
- TEXBLEND_ARG1 |
- TEXBLENDARG_MODIFY_PARMS |
- texel_op);
- imesa->TexBlend[curTex][5] = (STATE3D_MAP_BLEND_ARG_CMD(curTex) |
- TEXPIPE_ALPHA |
- TEXBLEND_ARG2 |
- TEXBLENDARG_MODIFY_PARMS |
- TEXBLENDARG_CURRENT);
- imesa->TexBlendColorPipeNum[curTex] = 0;
- imesa->TexBlendWordsUsed[curTex] = 6;
- break;
- default:
- /* Always set to passthru if something is funny */
- imesa->TexBlend[curTex][0] = (STATE3D_MAP_BLEND_OP_CMD(curTex) |
- TEXPIPE_COLOR |
- ENABLE_TEXOUTPUT_WRT_SEL |
- TEXOP_OUTPUT_CURRENT |
- DISABLE_TEX_CNTRL_STAGE |
- TEXOP_SCALE_1X |
- TEXOP_MODIFY_PARMS |
- TEXBLENDOP_ARG1);
- imesa->TexBlend[curTex][1] = (STATE3D_MAP_BLEND_OP_CMD(curTex) |
- TEXPIPE_ALPHA |
- ENABLE_TEXOUTPUT_WRT_SEL |
- TEXOP_OUTPUT_CURRENT |
- TEXOP_SCALE_1X |
- TEXOP_MODIFY_PARMS |
- TEXBLENDOP_ARG1);
- imesa->TexBlend[curTex][2] = (STATE3D_MAP_BLEND_ARG_CMD(curTex) |
- TEXPIPE_COLOR |
- TEXBLEND_ARG1 |
- TEXBLENDARG_MODIFY_PARMS |
- TEXBLENDARG_CURRENT);
- imesa->TexBlend[curTex][3] = (STATE3D_MAP_BLEND_ARG_CMD(curTex) |
- TEXPIPE_ALPHA |
- TEXBLEND_ARG1 |
- TEXBLENDARG_MODIFY_PARMS |
- TEXBLENDARG_CURRENT);
- imesa->TexBlendColorPipeNum[curTex] = 0;
- imesa->TexBlendWordsUsed[curTex] = 4;
- break;
- }
- break;
-
- case GL_DECAL:
- switch(format) {
- case GL_RGB:
- case GL_YCBCR_MESA:
- imesa->TexBlend[curTex][0] = (STATE3D_MAP_BLEND_OP_CMD(curTex) |
- TEXPIPE_COLOR |
- ENABLE_TEXOUTPUT_WRT_SEL |
- TEXOP_OUTPUT_CURRENT |
- DISABLE_TEX_CNTRL_STAGE |
- TEXOP_SCALE_1X |
- TEXOP_MODIFY_PARMS |
- TEXBLENDOP_ARG1);
- imesa->TexBlend[curTex][1] = (STATE3D_MAP_BLEND_OP_CMD(curTex) |
- TEXPIPE_ALPHA |
- ENABLE_TEXOUTPUT_WRT_SEL |
- TEXOP_OUTPUT_CURRENT |
- TEXOP_SCALE_1X |
- TEXOP_MODIFY_PARMS |
- TEXBLENDOP_ARG1);
- imesa->TexBlend[curTex][2] = (STATE3D_MAP_BLEND_ARG_CMD(curTex) |
- TEXPIPE_COLOR |
- TEXBLEND_ARG1 |
- TEXBLENDARG_MODIFY_PARMS |
- texel_op);
- imesa->TexBlend[curTex][3] = (STATE3D_MAP_BLEND_ARG_CMD(curTex) |
- TEXPIPE_ALPHA |
- TEXBLEND_ARG1 |
- TEXBLENDARG_MODIFY_PARMS |
- TEXBLENDARG_CURRENT);
- imesa->TexBlendColorPipeNum[curTex] = 0;
- imesa->TexBlendWordsUsed[curTex] = 4;
- break;
-
- case GL_RGBA:
- imesa->TexBlend[curTex][0] = (STATE3D_MAP_BLEND_OP_CMD(curTex) |
- TEXPIPE_COLOR |
- ENABLE_TEXOUTPUT_WRT_SEL |
- TEXOP_OUTPUT_CURRENT |
- DISABLE_TEX_CNTRL_STAGE |
- TEXOP_SCALE_1X |
- TEXOP_MODIFY_PARMS |
- TEXBLENDOP_BLEND);
- imesa->TexBlend[curTex][1] = (STATE3D_MAP_BLEND_OP_CMD(curTex) |
- TEXPIPE_ALPHA |
- ENABLE_TEXOUTPUT_WRT_SEL |
- TEXOP_OUTPUT_CURRENT |
- TEXOP_SCALE_1X |
- TEXOP_MODIFY_PARMS |
- TEXBLENDOP_ARG1);
- imesa->TexBlend[curTex][2] = (STATE3D_MAP_BLEND_ARG_CMD(curTex) |
- TEXPIPE_COLOR |
- TEXBLEND_ARG0 |
- TEXBLENDARG_MODIFY_PARMS |
- TEXBLENDARG_REPLICATE_ALPHA |
- texel_op);
- imesa->TexBlend[curTex][3] = (STATE3D_MAP_BLEND_ARG_CMD(curTex) |
- TEXPIPE_COLOR |
- TEXBLEND_ARG1 |
- TEXBLENDARG_MODIFY_PARMS |
- texel_op);
- imesa->TexBlend[curTex][4] = (STATE3D_MAP_BLEND_ARG_CMD(curTex) |
- TEXPIPE_COLOR |
- TEXBLEND_ARG2 |
- TEXBLENDARG_MODIFY_PARMS |
- TEXBLENDARG_CURRENT);
- imesa->TexBlend[curTex][5] = (STATE3D_MAP_BLEND_ARG_CMD(curTex) |
- TEXPIPE_ALPHA |
- TEXBLEND_ARG1 |
- TEXBLENDARG_MODIFY_PARMS |
- TEXBLENDARG_CURRENT);
- imesa->TexBlendColorPipeNum[curTex] = 0;
- imesa->TexBlendWordsUsed[curTex] = 6;
- break;
- default:
- /* Always set to passthru if something is funny */
- imesa->TexBlend[curTex][0] = (STATE3D_MAP_BLEND_OP_CMD(curTex) |
- TEXPIPE_COLOR |
- ENABLE_TEXOUTPUT_WRT_SEL |
- TEXOP_OUTPUT_CURRENT |
- DISABLE_TEX_CNTRL_STAGE |
- TEXOP_SCALE_1X |
- TEXOP_MODIFY_PARMS |
- TEXBLENDOP_ARG1);
- imesa->TexBlend[curTex][1] = (STATE3D_MAP_BLEND_OP_CMD(curTex) |
- TEXPIPE_ALPHA |
- ENABLE_TEXOUTPUT_WRT_SEL |
- TEXOP_OUTPUT_CURRENT |
- TEXOP_SCALE_1X |
- TEXOP_MODIFY_PARMS |
- TEXBLENDOP_ARG1);
- imesa->TexBlend[curTex][2] = (STATE3D_MAP_BLEND_ARG_CMD(curTex) |
- TEXPIPE_COLOR |
- TEXBLEND_ARG1 |
- TEXBLENDARG_MODIFY_PARMS |
- TEXBLENDARG_CURRENT);
- imesa->TexBlend[curTex][3] = (STATE3D_MAP_BLEND_ARG_CMD(curTex) |
- TEXPIPE_ALPHA |
- TEXBLEND_ARG1 |
- TEXBLENDARG_MODIFY_PARMS |
- TEXBLENDARG_CURRENT);
- imesa->TexBlendColorPipeNum[curTex] = 0;
- imesa->TexBlendWordsUsed[curTex] = 4;
- break;
- }
- break;
-
- case GL_BLEND:
- switch(format) {
- case GL_ALPHA:
- imesa->TexBlend[curTex][0] = (STATE3D_MAP_BLEND_OP_CMD(curTex) |
- TEXPIPE_COLOR |
- ENABLE_TEXOUTPUT_WRT_SEL |
- TEXOP_OUTPUT_CURRENT |
- DISABLE_TEX_CNTRL_STAGE |
- TEXOP_SCALE_1X |
- TEXOP_MODIFY_PARMS |
- TEXBLENDOP_ARG1);
- imesa->TexBlend[curTex][1] = (STATE3D_MAP_BLEND_OP_CMD(curTex) |
- TEXPIPE_ALPHA |
- ENABLE_TEXOUTPUT_WRT_SEL |
- TEXOP_OUTPUT_CURRENT |
- TEXOP_SCALE_1X |
- TEXOP_MODIFY_PARMS |
- TEXBLENDOP_MODULATE);
- imesa->TexBlend[curTex][2] = (STATE3D_MAP_BLEND_ARG_CMD(curTex) |
- TEXPIPE_COLOR |
- TEXBLEND_ARG1 |
- TEXBLENDARG_MODIFY_PARMS |
- TEXBLENDARG_CURRENT);
- imesa->TexBlend[curTex][3] = (STATE3D_MAP_BLEND_ARG_CMD(curTex) |
- TEXPIPE_ALPHA |
- TEXBLEND_ARG1 |
- TEXBLENDARG_MODIFY_PARMS |
- texel_op);
- imesa->TexBlend[curTex][4] = (STATE3D_MAP_BLEND_ARG_CMD(curTex) |
- TEXPIPE_ALPHA |
- TEXBLEND_ARG2 |
- TEXBLENDARG_MODIFY_PARMS |
- TEXBLENDARG_CURRENT);
- imesa->TexBlendColorPipeNum[curTex] = 0;
- imesa->TexBlendWordsUsed[curTex] = 5;
- break;
-
- case GL_LUMINANCE:
- case GL_RGB:
- case GL_YCBCR_MESA:
- imesa->TexBlend[curTex][0] = (STATE3D_MAP_BLEND_OP_CMD(curTex) |
- TEXPIPE_COLOR |
- ENABLE_TEXOUTPUT_WRT_SEL |
- TEXOP_OUTPUT_CURRENT |
- DISABLE_TEX_CNTRL_STAGE |
- TEXOP_SCALE_1X |
- TEXOP_MODIFY_PARMS |
- TEXBLENDOP_BLEND);
- imesa->TexBlend[curTex][1] = (STATE3D_MAP_BLEND_OP_CMD(curTex) |
- TEXPIPE_ALPHA |
- ENABLE_TEXOUTPUT_WRT_SEL |
- TEXOP_OUTPUT_CURRENT |
- TEXOP_SCALE_1X |
- TEXOP_MODIFY_PARMS |
- TEXBLENDOP_ARG1);
- imesa->TexBlend[curTex][2] = (STATE3D_MAP_BLEND_ARG_CMD(curTex) |
- TEXPIPE_COLOR |
- TEXBLEND_ARG0 |
- TEXBLENDARG_MODIFY_PARMS |
- texel_op);
- imesa->TexBlend[curTex][3] = (STATE3D_MAP_BLEND_ARG_CMD(curTex) |
- TEXPIPE_COLOR |
- TEXBLEND_ARG1 |
- TEXBLENDARG_MODIFY_PARMS |
- TEXBLENDARG_FACTOR_N);
- imesa->TexBlend[curTex][4] = (STATE3D_MAP_BLEND_ARG_CMD(curTex) |
- TEXPIPE_COLOR |
- TEXBLEND_ARG2 |
- TEXBLENDARG_MODIFY_PARMS |
- TEXBLENDARG_CURRENT);
- imesa->TexBlend[curTex][5] = (STATE3D_MAP_BLEND_ARG_CMD(curTex) |
- TEXPIPE_ALPHA |
- TEXBLEND_ARG1 |
- TEXBLENDARG_MODIFY_PARMS |
- TEXBLENDARG_CURRENT);
- imesa->TexBlendColorPipeNum[curTex] = 0;
- imesa->TexBlendWordsUsed[curTex] = 6;
- break;
- case GL_INTENSITY:
- imesa->TexBlend[curTex][0] = (STATE3D_MAP_BLEND_OP_CMD(curTex) |
- TEXPIPE_COLOR |
- ENABLE_TEXOUTPUT_WRT_SEL |
- TEXOP_OUTPUT_CURRENT |
- DISABLE_TEX_CNTRL_STAGE |
- TEXOP_SCALE_1X |
- TEXOP_MODIFY_PARMS |
- TEXBLENDOP_BLEND);
- imesa->TexBlend[curTex][1] = (STATE3D_MAP_BLEND_OP_CMD(curTex) |
- TEXPIPE_ALPHA |
- ENABLE_TEXOUTPUT_WRT_SEL |
- TEXOP_OUTPUT_CURRENT |
- TEXOP_SCALE_1X |
- TEXOP_MODIFY_PARMS |
- TEXBLENDOP_BLEND);
- imesa->TexBlend[curTex][2] = (STATE3D_MAP_BLEND_ARG_CMD(curTex) |
- TEXPIPE_COLOR |
- TEXBLEND_ARG0 |
- TEXBLENDARG_MODIFY_PARMS |
- texel_op);
- imesa->TexBlend[curTex][3] = (STATE3D_MAP_BLEND_ARG_CMD(curTex) |
- TEXPIPE_COLOR |
- TEXBLEND_ARG1 |
- TEXBLENDARG_MODIFY_PARMS |
- TEXBLENDARG_FACTOR_N);
- imesa->TexBlend[curTex][4] = (STATE3D_MAP_BLEND_ARG_CMD(curTex) |
- TEXPIPE_COLOR |
- TEXBLEND_ARG2 |
- TEXBLENDARG_MODIFY_PARMS |
- TEXBLENDARG_CURRENT);
- imesa->TexBlend[curTex][5] = (STATE3D_MAP_BLEND_ARG_CMD(curTex) |
- TEXPIPE_ALPHA |
- TEXBLEND_ARG0 |
- TEXBLENDARG_MODIFY_PARMS |
- texel_op);
- imesa->TexBlend[curTex][6] = (STATE3D_MAP_BLEND_ARG_CMD(curTex) |
- TEXPIPE_ALPHA |
- TEXBLEND_ARG1 |
- TEXBLENDARG_MODIFY_PARMS |
- TEXBLENDARG_FACTOR_N);
- imesa->TexBlend[curTex][7] = (STATE3D_MAP_BLEND_ARG_CMD(curTex) |
- TEXPIPE_ALPHA |
- TEXBLEND_ARG2 |
- TEXBLENDARG_MODIFY_PARMS |
- TEXBLENDARG_CURRENT);
- imesa->TexBlendColorPipeNum[curTex] = 0;
- imesa->TexBlendWordsUsed[curTex] = 8;
- break;
- case GL_LUMINANCE_ALPHA:
- case GL_RGBA:
- imesa->TexBlend[curTex][0] = (STATE3D_MAP_BLEND_OP_CMD(curTex) |
- TEXPIPE_COLOR |
- ENABLE_TEXOUTPUT_WRT_SEL |
- TEXOP_OUTPUT_CURRENT |
- DISABLE_TEX_CNTRL_STAGE |
- TEXOP_SCALE_1X |
- TEXOP_MODIFY_PARMS |
- TEXBLENDOP_BLEND);
- imesa->TexBlend[curTex][1] = (STATE3D_MAP_BLEND_OP_CMD(curTex) |
- TEXPIPE_ALPHA |
- ENABLE_TEXOUTPUT_WRT_SEL |
- TEXOP_OUTPUT_CURRENT |
- TEXOP_SCALE_1X |
- TEXOP_MODIFY_PARMS |
- TEXBLENDOP_MODULATE);
- imesa->TexBlend[curTex][2] = (STATE3D_MAP_BLEND_ARG_CMD(curTex) |
- TEXPIPE_COLOR |
- TEXBLEND_ARG0 |
- TEXBLENDARG_MODIFY_PARMS |
- texel_op);
- imesa->TexBlend[curTex][3] = (STATE3D_MAP_BLEND_ARG_CMD(curTex) |
- TEXPIPE_COLOR |
- TEXBLEND_ARG1 |
- TEXBLENDARG_MODIFY_PARMS |
- TEXBLENDARG_FACTOR_N);
- imesa->TexBlend[curTex][4] = (STATE3D_MAP_BLEND_ARG_CMD(curTex) |
- TEXPIPE_COLOR |
- TEXBLEND_ARG2 |
- TEXBLENDARG_MODIFY_PARMS |
- TEXBLENDARG_CURRENT);
- imesa->TexBlend[curTex][5] = (STATE3D_MAP_BLEND_ARG_CMD(curTex) |
- TEXPIPE_ALPHA |
- TEXBLEND_ARG1 |
- TEXBLENDARG_MODIFY_PARMS |
- texel_op);
- imesa->TexBlend[curTex][6] = (STATE3D_MAP_BLEND_ARG_CMD(curTex) |
- TEXPIPE_ALPHA |
- TEXBLEND_ARG2 |
- TEXBLENDARG_MODIFY_PARMS |
- TEXBLENDARG_CURRENT);
- imesa->TexBlendColorPipeNum[curTex] = 0;
- imesa->TexBlendWordsUsed[curTex] = 7;
- break;
- default:
- /* Always set to passthru if something is funny */
- imesa->TexBlend[curTex][0] = (STATE3D_MAP_BLEND_OP_CMD(curTex) |
- TEXPIPE_COLOR |
- ENABLE_TEXOUTPUT_WRT_SEL |
- TEXOP_OUTPUT_CURRENT |
- DISABLE_TEX_CNTRL_STAGE |
- TEXOP_SCALE_1X |
- TEXOP_MODIFY_PARMS |
- TEXBLENDOP_ARG1);
- imesa->TexBlend[curTex][1] = (STATE3D_MAP_BLEND_OP_CMD(curTex) |
- TEXPIPE_ALPHA |
- ENABLE_TEXOUTPUT_WRT_SEL |
- TEXOP_OUTPUT_CURRENT |
- TEXOP_SCALE_1X |
- TEXOP_MODIFY_PARMS |
- TEXBLENDOP_ARG1);
- imesa->TexBlend[curTex][2] = (STATE3D_MAP_BLEND_ARG_CMD(curTex) |
- TEXPIPE_COLOR |
- TEXBLEND_ARG1 |
- TEXBLENDARG_MODIFY_PARMS |
- TEXBLENDARG_CURRENT);
- imesa->TexBlend[curTex][3] = (STATE3D_MAP_BLEND_ARG_CMD(curTex) |
- TEXPIPE_ALPHA |
- TEXBLEND_ARG1 |
- TEXBLENDARG_MODIFY_PARMS |
- TEXBLENDARG_CURRENT);
- imesa->TexBlendColorPipeNum[curTex] = 0;
- imesa->TexBlendWordsUsed[curTex] = 4;
- break;
- }
- break;
-
- case GL_ADD:
- switch(format) {
- case GL_ALPHA:
- imesa->TexBlend[curTex][0] = (STATE3D_MAP_BLEND_OP_CMD(curTex) |
- TEXPIPE_COLOR |
- ENABLE_TEXOUTPUT_WRT_SEL |
- TEXOP_OUTPUT_CURRENT |
- DISABLE_TEX_CNTRL_STAGE |
- TEXOP_SCALE_1X |
- TEXOP_MODIFY_PARMS |
- TEXBLENDOP_ARG1);
- imesa->TexBlend[curTex][1] = (STATE3D_MAP_BLEND_OP_CMD(curTex) |
- TEXPIPE_ALPHA |
- ENABLE_TEXOUTPUT_WRT_SEL |
- TEXOP_OUTPUT_CURRENT |
- TEXOP_SCALE_1X |
- TEXOP_MODIFY_PARMS |
- TEXBLENDOP_MODULATE);
- imesa->TexBlend[curTex][2] = (STATE3D_MAP_BLEND_ARG_CMD(curTex) |
- TEXPIPE_COLOR |
- TEXBLEND_ARG1 |
- TEXBLENDARG_MODIFY_PARMS |
- TEXBLENDARG_CURRENT);
- imesa->TexBlend[curTex][3] = (STATE3D_MAP_BLEND_ARG_CMD(curTex) |
- TEXPIPE_ALPHA |
- TEXBLEND_ARG1 |
- TEXBLENDARG_MODIFY_PARMS |
- texel_op);
- imesa->TexBlend[curTex][4] = (STATE3D_MAP_BLEND_ARG_CMD(curTex) |
- TEXPIPE_ALPHA |
- TEXBLEND_ARG2 |
- TEXBLENDARG_MODIFY_PARMS |
- TEXBLENDARG_CURRENT);
- imesa->TexBlendColorPipeNum[curTex] = 0;
- imesa->TexBlendWordsUsed[curTex] = 5;
- break;
- case GL_LUMINANCE:
- case GL_RGB:
- case GL_YCBCR_MESA:
- imesa->TexBlend[curTex][0] = (STATE3D_MAP_BLEND_OP_CMD(curTex) |
- TEXPIPE_COLOR |
- ENABLE_TEXOUTPUT_WRT_SEL |
- TEXOP_OUTPUT_CURRENT |
- DISABLE_TEX_CNTRL_STAGE |
- TEXOP_SCALE_1X |
- TEXOP_MODIFY_PARMS |
- TEXBLENDOP_ADD);
- imesa->TexBlend[curTex][1] = (STATE3D_MAP_BLEND_OP_CMD(curTex) |
- TEXPIPE_ALPHA |
- ENABLE_TEXOUTPUT_WRT_SEL |
- TEXOP_OUTPUT_CURRENT |
- TEXOP_SCALE_1X |
- TEXOP_MODIFY_PARMS |
- TEXBLENDOP_ARG1);
- imesa->TexBlend[curTex][2] = (STATE3D_MAP_BLEND_ARG_CMD(curTex) |
- TEXPIPE_COLOR |
- TEXBLEND_ARG1 |
- TEXBLENDARG_MODIFY_PARMS |
- texel_op);
- imesa->TexBlend[curTex][3] = (STATE3D_MAP_BLEND_ARG_CMD(curTex) |
- TEXPIPE_COLOR |
- TEXBLEND_ARG2 |
- TEXBLENDARG_MODIFY_PARMS |
- TEXBLENDARG_CURRENT);
- imesa->TexBlend[curTex][4] = (STATE3D_MAP_BLEND_ARG_CMD(curTex) |
- TEXPIPE_ALPHA |
- TEXBLEND_ARG1 |
- TEXBLENDARG_MODIFY_PARMS |
- TEXBLENDARG_CURRENT);
- imesa->TexBlendColorPipeNum[curTex] = 0;
- imesa->TexBlendWordsUsed[curTex] = 5;
- break;
-
- case GL_INTENSITY:
- imesa->TexBlend[curTex][0] = (STATE3D_MAP_BLEND_OP_CMD(curTex) |
- TEXPIPE_COLOR |
- ENABLE_TEXOUTPUT_WRT_SEL |
- TEXOP_OUTPUT_CURRENT |
- DISABLE_TEX_CNTRL_STAGE |
- TEXOP_SCALE_1X |
- TEXOP_MODIFY_PARMS |
- TEXBLENDOP_ADD);
- imesa->TexBlend[curTex][1] = (STATE3D_MAP_BLEND_OP_CMD(curTex) |
- TEXPIPE_ALPHA |
- ENABLE_TEXOUTPUT_WRT_SEL |
- TEXOP_OUTPUT_CURRENT |
- TEXOP_SCALE_1X |
- TEXOP_MODIFY_PARMS |
- TEXBLENDOP_ADD);
- imesa->TexBlend[curTex][2] = (STATE3D_MAP_BLEND_ARG_CMD(curTex) |
- TEXPIPE_COLOR |
- TEXBLEND_ARG1 |
- TEXBLENDARG_MODIFY_PARMS |
- texel_op);
- imesa->TexBlend[curTex][3] = (STATE3D_MAP_BLEND_ARG_CMD(curTex) |
- TEXPIPE_COLOR |
- TEXBLEND_ARG2 |
- TEXBLENDARG_MODIFY_PARMS |
- TEXBLENDARG_CURRENT);
- imesa->TexBlend[curTex][4] = (STATE3D_MAP_BLEND_ARG_CMD(curTex) |
- TEXPIPE_ALPHA |
- TEXBLEND_ARG1 |
- TEXBLENDARG_MODIFY_PARMS |
- texel_op);
- imesa->TexBlend[curTex][5] = (STATE3D_MAP_BLEND_ARG_CMD(curTex) |
- TEXPIPE_ALPHA |
- TEXBLEND_ARG2 |
- TEXBLENDARG_MODIFY_PARMS |
- TEXBLENDARG_CURRENT);
- imesa->TexBlendColorPipeNum[curTex] = 0;
- imesa->TexBlendWordsUsed[curTex] = 6;
- break;
-
- case GL_LUMINANCE_ALPHA:
- case GL_RGBA:
- imesa->TexBlend[curTex][0] = (STATE3D_MAP_BLEND_OP_CMD(curTex) |
- TEXPIPE_COLOR |
- ENABLE_TEXOUTPUT_WRT_SEL |
- TEXOP_OUTPUT_CURRENT |
- DISABLE_TEX_CNTRL_STAGE |
- TEXOP_SCALE_1X |
- TEXOP_MODIFY_PARMS |
- TEXBLENDOP_ADD);
- imesa->TexBlend[curTex][1] = (STATE3D_MAP_BLEND_OP_CMD(curTex) |
- TEXPIPE_ALPHA |
- ENABLE_TEXOUTPUT_WRT_SEL |
- TEXOP_OUTPUT_CURRENT |
- TEXOP_SCALE_1X |
- TEXOP_MODIFY_PARMS |
- TEXBLENDOP_MODULATE);
- imesa->TexBlend[curTex][2] = (STATE3D_MAP_BLEND_ARG_CMD(curTex) |
- TEXPIPE_COLOR |
- TEXBLEND_ARG1 |
- TEXBLENDARG_MODIFY_PARMS |
- texel_op);
- imesa->TexBlend[curTex][3] = (STATE3D_MAP_BLEND_ARG_CMD(curTex) |
- TEXPIPE_COLOR |
- TEXBLEND_ARG2 |
- TEXBLENDARG_MODIFY_PARMS |
- TEXBLENDARG_CURRENT);
- imesa->TexBlend[curTex][4] = (STATE3D_MAP_BLEND_ARG_CMD(curTex) |
- TEXPIPE_ALPHA |
- TEXBLEND_ARG1 |
- TEXBLENDARG_MODIFY_PARMS |
- texel_op);
- imesa->TexBlend[curTex][5] = (STATE3D_MAP_BLEND_ARG_CMD(curTex) |
- TEXPIPE_ALPHA |
- TEXBLEND_ARG2 |
- TEXBLENDARG_MODIFY_PARMS |
- TEXBLENDARG_CURRENT);
- imesa->TexBlendColorPipeNum[curTex] = 0;
- imesa->TexBlendWordsUsed[curTex] = 6;
- break;
- default:
- /* Always set to passthru if something is funny */
- imesa->TexBlend[curTex][0] = (STATE3D_MAP_BLEND_OP_CMD(curTex) |
- TEXPIPE_COLOR |
- ENABLE_TEXOUTPUT_WRT_SEL |
- TEXOP_OUTPUT_CURRENT |
- DISABLE_TEX_CNTRL_STAGE |
- TEXOP_SCALE_1X |
- TEXOP_MODIFY_PARMS |
- TEXBLENDOP_ARG1);
- imesa->TexBlend[curTex][1] = (STATE3D_MAP_BLEND_OP_CMD(curTex) |
- TEXPIPE_ALPHA |
- ENABLE_TEXOUTPUT_WRT_SEL |
- TEXOP_OUTPUT_CURRENT |
- TEXOP_SCALE_1X |
- TEXOP_MODIFY_PARMS |
- TEXBLENDOP_ARG1);
- imesa->TexBlend[curTex][2] = (STATE3D_MAP_BLEND_ARG_CMD(curTex) |
- TEXPIPE_COLOR |
- TEXBLEND_ARG1 |
- TEXBLENDARG_MODIFY_PARMS |
- TEXBLENDARG_CURRENT);
- imesa->TexBlend[curTex][3] = (STATE3D_MAP_BLEND_ARG_CMD(curTex) |
- TEXPIPE_ALPHA |
- TEXBLEND_ARG1 |
- TEXBLENDARG_MODIFY_PARMS |
- TEXBLENDARG_CURRENT);
- imesa->TexBlendColorPipeNum[curTex] = 0;
- imesa->TexBlendWordsUsed[curTex] = 4;
- break;
- }
- break;
- default:
- /* Always set to passthru if something is funny */
- imesa->TexBlend[curTex][0] = (STATE3D_MAP_BLEND_OP_CMD(curTex) |
- TEXPIPE_COLOR |
- ENABLE_TEXOUTPUT_WRT_SEL |
- TEXOP_OUTPUT_CURRENT |
- DISABLE_TEX_CNTRL_STAGE |
- TEXOP_SCALE_1X |
- TEXOP_MODIFY_PARMS |
- TEXBLENDOP_ARG1);
- imesa->TexBlend[curTex][1] = (STATE3D_MAP_BLEND_OP_CMD(curTex) |
- TEXPIPE_ALPHA |
- ENABLE_TEXOUTPUT_WRT_SEL |
- TEXOP_OUTPUT_CURRENT |
- TEXOP_SCALE_1X |
- TEXOP_MODIFY_PARMS |
- TEXBLENDOP_ARG1);
- imesa->TexBlend[curTex][2] = (STATE3D_MAP_BLEND_ARG_CMD(curTex) |
- TEXPIPE_COLOR |
- TEXBLEND_ARG1 |
- TEXBLENDARG_MODIFY_PARMS |
- TEXBLENDARG_CURRENT);
- imesa->TexBlend[curTex][3] = (STATE3D_MAP_BLEND_ARG_CMD(curTex) |
- TEXPIPE_ALPHA |
- TEXBLEND_ARG1 |
- TEXBLENDARG_MODIFY_PARMS |
- TEXBLENDARG_CURRENT);
- imesa->TexBlendColorPipeNum[curTex] = 0;
- imesa->TexBlendWordsUsed[curTex] = 4;
- break;
- }
-
- if (I830_DEBUG&DEBUG_TEXTURE)
- fprintf(stderr, "%s\n", __FUNCTION__);
-}
+/**
+ * Calculate the hardware instuctions to setup the current texture enviromnemt
+ * settings. Since \c gl_texture_unit::_CurrentCombine is used, both
+ * "classic" texture enviroments and GL_ARB_texture_env_combine type texture
+ * environments are treated identically.
+ *
+ * \todo
+ * This function should return \c GLboolean. When \c GL_FALSE is returned,
+ * it means that an environment is selected that the hardware cannot do. This
+ * is the way the Radeon and R200 drivers work.
+ *
+ * \todo
+ * Looking at i830_3d_regs.h, it seems the i830 can do part of
+ * GL_ATI_texture_env_combine3. It can handle using \c GL_ONE and
+ * \c GL_ZERO as combine inputs (which the code already supports). It can
+ * also handle the \c GL_MODULATE_ADD_ATI mode. Is it worth investigating
+ * partial support for the extension?
+ */
-static void i830SetTexEnvCombine(i830ContextPtr imesa,
- const struct gl_texture_unit *texUnit,
- GLint unit)
+static void i830UpdateTexEnv( GLcontext *ctx, GLuint unit )
{
+ i830ContextPtr imesa = I830_CONTEXT(ctx);
+ const struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit];
+ const GLuint numColorArgs = texUnit->_CurrentCombine->_NumArgsRGB;
+ const GLuint numAlphaArgs = texUnit->_CurrentCombine->_NumArgsA;
+
+ GLboolean need_constant_color = GL_FALSE;
GLuint blendop;
GLuint ablendop;
GLuint args_RGB[3];
GLuint args_A[3];
- GLuint texel_op = GetTexelOp(unit);
GLuint rgb_shift = texUnit->Combine.ScaleShiftRGB;
GLuint alpha_shift = texUnit->Combine.ScaleShiftA;
int i;
+ unsigned used;
+ static const GLuint tex_blend_rgb[3] = {
+ TEXPIPE_COLOR | TEXBLEND_ARG1 | TEXBLENDARG_MODIFY_PARMS,
+ TEXPIPE_COLOR | TEXBLEND_ARG2 | TEXBLENDARG_MODIFY_PARMS,
+ TEXPIPE_COLOR | TEXBLEND_ARG0 | TEXBLENDARG_MODIFY_PARMS,
+ };
+ static const GLuint tex_blend_a[3] = {
+ TEXPIPE_ALPHA | TEXBLEND_ARG1 | TEXBLENDARG_MODIFY_PARMS,
+ TEXPIPE_ALPHA | TEXBLEND_ARG2 | TEXBLENDARG_MODIFY_PARMS,
+ TEXPIPE_ALPHA | TEXBLEND_ARG0 | TEXBLENDARG_MODIFY_PARMS,
+ };
+ static const GLuint op_rgb[4] = {
+ 0,
+ TEXBLENDARG_INV_ARG,
+ TEXBLENDARG_REPLICATE_ALPHA,
+ TEXBLENDARG_REPLICATE_ALPHA | TEXBLENDARG_INV_ARG,
+ };
+
+
+
+ imesa->TexBlendWordsUsed[unit] = 0;
if(I830_DEBUG&DEBUG_TEXTURE)
- fprintf(stderr, "%s\n", __FUNCTION__);
+ fprintf(stderr, "[%s:%u] env. mode = %s\n", __FUNCTION__, __LINE__,
+ _mesa_lookup_enum_by_nr(texUnit->EnvMode));
- switch(texUnit->Combine.ModeRGB) {
+
+ switch(texUnit->_CurrentCombine->ModeRGB) {
case GL_REPLACE:
blendop = TEXBLENDOP_ARG1;
break;
blendop |= (rgb_shift << TEXOP_SCALE_SHIFT);
- switch(texUnit->Combine.ModeA) {
+ switch(texUnit->_CurrentCombine->ModeA) {
case GL_REPLACE:
ablendop = TEXBLENDOP_ARG1;
break;
return;
}
- if ( (texUnit->Combine.ModeRGB == GL_DOT3_RGBA_EXT)
- || (texUnit->Combine.ModeRGB == GL_DOT3_RGBA) ) {
+ if ( (texUnit->_CurrentCombine->ModeRGB == GL_DOT3_RGBA_EXT)
+ || (texUnit->_CurrentCombine->ModeRGB == GL_DOT3_RGBA) ) {
ablendop = TEXBLENDOP_DOT3;
}
ablendop |= (alpha_shift << TEXOP_SCALE_SHIFT);
/* Handle RGB args */
- for(i = 0; i < 3; i++) {
- switch(texUnit->Combine.SourceRGB[i]) {
+ for( i = 0 ; i < numColorArgs ; i++ ) {
+ const int op = texUnit->_CurrentCombine->OperandRGB[i] - GL_SRC_COLOR;
+
+ assert( (op >= 0) && (op <= 3) );
+ switch(texUnit->_CurrentCombine->SourceRGB[i]) {
case GL_TEXTURE:
- args_RGB[i] = texel_op;
+ args_RGB[i] = TEXBLENDARG_TEXEL0 + unit;
+ break;
+ case GL_TEXTURE0:
+ case GL_TEXTURE1:
+ case GL_TEXTURE2:
+ case GL_TEXTURE3:
+ args_RGB[i] = TEXBLENDARG_TEXEL0
+ + (texUnit->_CurrentCombine->SourceRGB[i] & 0x03);
break;
case GL_CONSTANT:
args_RGB[i] = TEXBLENDARG_FACTOR_N;
+ need_constant_color = GL_TRUE;
break;
case GL_PRIMARY_COLOR:
args_RGB[i] = TEXBLENDARG_DIFFUSE;
case GL_PREVIOUS:
args_RGB[i] = TEXBLENDARG_CURRENT;
break;
- default:
- return;
-
- }
-
- switch(texUnit->Combine.OperandRGB[i]) {
- case GL_SRC_COLOR:
- args_RGB[i] |= 0;
+ case GL_ONE:
+ args_RGB[i] = TEXBLENDARG_ONE;
break;
- case GL_ONE_MINUS_SRC_COLOR:
- args_RGB[i] |= TEXBLENDARG_INV_ARG;
- break;
- case GL_SRC_ALPHA:
- args_RGB[i] |= TEXBLENDARG_REPLICATE_ALPHA;
- break;
- case GL_ONE_MINUS_SRC_ALPHA:
- args_RGB[i] |= (TEXBLENDARG_REPLICATE_ALPHA |
- TEXBLENDARG_INV_ARG);
+ case GL_ZERO:
+ args_RGB[i] = TEXBLENDARG_ONE | TEXBLENDARG_INV_ARG;
break;
default:
return;
}
+
+ /* Xor is used so that GL_ONE_MINUS_SRC_COLOR with GL_ZERO
+ * works correctly.
+ */
+ args_RGB[i] ^= op_rgb[op];
}
/* Handle A args */
- for(i = 0; i < 3; i++) {
- switch(texUnit->Combine.SourceA[i]) {
+ for( i = 0 ; i < numAlphaArgs ; i++ ) {
+ const int op = texUnit->_CurrentCombine->OperandA[i] - GL_SRC_ALPHA;
+
+ assert( (op >= 0) && (op <= 1) );
+ switch(texUnit->_CurrentCombine->SourceA[i]) {
case GL_TEXTURE:
- args_A[i] = texel_op;
+ args_A[i] = TEXBLENDARG_TEXEL0 + unit;
+ break;
+ case GL_TEXTURE0:
+ case GL_TEXTURE1:
+ case GL_TEXTURE2:
+ case GL_TEXTURE3:
+ args_A[i] = TEXBLENDARG_TEXEL0
+ + (texUnit->_CurrentCombine->SourceA[i] & 0x03);
break;
case GL_CONSTANT:
args_A[i] = TEXBLENDARG_FACTOR_N;
+ need_constant_color = GL_TRUE;
break;
case GL_PRIMARY_COLOR:
args_A[i] = TEXBLENDARG_DIFFUSE;
case GL_PREVIOUS:
args_A[i] = TEXBLENDARG_CURRENT;
break;
- default:
- return;
-
- }
-
- switch(texUnit->Combine.OperandA[i]) {
- case GL_SRC_ALPHA:
- args_A[i] |= 0;
+ case GL_ONE:
+ args_A[i] = TEXBLENDARG_ONE;
break;
- case GL_ONE_MINUS_SRC_ALPHA:
- args_A[i] |= TEXBLENDARG_INV_ARG;
+ case GL_ZERO:
+ args_A[i] = TEXBLENDARG_ONE | TEXBLENDARG_INV_ARG;
break;
default:
return;
}
+
+ /* We cheat. :) The register values for this are the same as for
+ * RGB. Xor is used so that GL_ONE_MINUS_SRC_ALPHA with GL_ZERO
+ * works correctly.
+ */
+ args_A[i] ^= op_rgb[op];
}
/* Native Arg1 == Arg0 in GL_EXT_texture_env_combine spec */
/* Build color pipeline */
- imesa->TexBlend[unit][0] = (STATE3D_MAP_BLEND_OP_CMD(unit) |
- TEXPIPE_COLOR |
- ENABLE_TEXOUTPUT_WRT_SEL |
- TEXOP_OUTPUT_CURRENT |
- DISABLE_TEX_CNTRL_STAGE |
- TEXOP_MODIFY_PARMS |
- blendop);
- imesa->TexBlend[unit][1] = (STATE3D_MAP_BLEND_ARG_CMD(unit) |
- TEXPIPE_COLOR |
- TEXBLEND_ARG1 |
- TEXBLENDARG_MODIFY_PARMS |
- args_RGB[0]);
- imesa->TexBlend[unit][2] = (STATE3D_MAP_BLEND_ARG_CMD(unit) |
- TEXPIPE_COLOR |
- TEXBLEND_ARG2 |
- TEXBLENDARG_MODIFY_PARMS |
- args_RGB[1]);
- imesa->TexBlend[unit][3] = (STATE3D_MAP_BLEND_ARG_CMD(unit) |
- TEXPIPE_COLOR |
- TEXBLEND_ARG0 |
- TEXBLENDARG_MODIFY_PARMS |
- args_RGB[2]);
+ used = 0;
+ imesa->TexBlend[unit][used++] = (STATE3D_MAP_BLEND_OP_CMD(unit) |
+ TEXPIPE_COLOR |
+ ENABLE_TEXOUTPUT_WRT_SEL |
+ TEXOP_OUTPUT_CURRENT |
+ DISABLE_TEX_CNTRL_STAGE |
+ TEXOP_MODIFY_PARMS |
+ blendop);
+
+ imesa->TexBlend[unit][used++] = (STATE3D_MAP_BLEND_OP_CMD(unit) |
+ TEXPIPE_ALPHA |
+ ENABLE_TEXOUTPUT_WRT_SEL |
+ TEXOP_OUTPUT_CURRENT |
+ TEXOP_MODIFY_PARMS |
+ ablendop);
+
+ for ( i = 0 ; i < numColorArgs ; i++ ) {
+ imesa->TexBlend[unit][used++] = (STATE3D_MAP_BLEND_ARG_CMD(unit) |
+ tex_blend_rgb[i] |
+ args_RGB[i]);
+ }
+
+ for ( i = 0 ; i < numAlphaArgs ; i++ ) {
+ imesa->TexBlend[unit][used++] = (STATE3D_MAP_BLEND_ARG_CMD(unit) |
+ tex_blend_a[i] |
+ args_A[i]);
+ }
- /* Build Alpha pipeline */
- imesa->TexBlend[unit][4] = (STATE3D_MAP_BLEND_OP_CMD(unit) |
- TEXPIPE_ALPHA |
- ENABLE_TEXOUTPUT_WRT_SEL |
- TEXOP_OUTPUT_CURRENT |
- TEXOP_MODIFY_PARMS |
- ablendop);
- imesa->TexBlend[unit][5] = (STATE3D_MAP_BLEND_ARG_CMD(unit) |
- TEXPIPE_ALPHA |
- TEXBLEND_ARG1 |
- TEXBLENDARG_MODIFY_PARMS |
- args_A[0]);
- imesa->TexBlend[unit][6] = (STATE3D_MAP_BLEND_ARG_CMD(unit) |
- TEXPIPE_ALPHA |
- TEXBLEND_ARG2 |
- TEXBLENDARG_MODIFY_PARMS |
- args_A[1]);
- imesa->TexBlend[unit][7] = (STATE3D_MAP_BLEND_ARG_CMD(unit) |
- TEXPIPE_ALPHA |
- TEXBLEND_ARG0 |
- TEXBLENDARG_MODIFY_PARMS |
- args_A[2]);
- {
+ if ( need_constant_color ) {
GLubyte r, g, b, a;
- GLfloat *fc = texUnit->EnvColor;
+ const GLfloat * const fc = texUnit->EnvColor;
FLOAT_COLOR_TO_UBYTE_COLOR(r, fc[RCOMP]);
FLOAT_COLOR_TO_UBYTE_COLOR(g, fc[GCOMP]);
FLOAT_COLOR_TO_UBYTE_COLOR(b, fc[BCOMP]);
FLOAT_COLOR_TO_UBYTE_COLOR(a, fc[ACOMP]);
- imesa->TexBlend[unit][8] = STATE3D_COLOR_FACTOR_CMD(unit);
- imesa->TexBlend[unit][9] = ((a << 24) |
- (r << 16) |
- (g << 8) |
- b);
- }
- imesa->TexBlendWordsUsed[unit] = 10;
-}
-
-
-
-
-static void i830UpdateTexEnv( GLcontext *ctx, GLuint unit )
-{
- i830ContextPtr imesa = I830_CONTEXT(ctx);
- const struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit];
- const struct gl_texture_object *tObj = texUnit->_Current;
- i830TextureObjectPtr t = (i830TextureObjectPtr)tObj->DriverData;
- GLuint col;
-
- imesa->TexBlendWordsUsed[unit] = 0;
-
- if (0) fprintf(stderr, "i830UpdateTexEnv called : %s\n",
- _mesa_lookup_enum_by_nr(texUnit->EnvMode));
-
- if(texUnit->EnvMode == GL_COMBINE) {
- i830SetTexEnvCombine(imesa,
- texUnit,
- unit);
- } else {
- i830SetBlend_GL1_2(imesa,
- unit,
- texUnit->EnvMode,
- t->image[0][0].internalFormat);
-
- /* add blend color */
- {
- GLubyte r, g, b, a;
- GLfloat *fc = texUnit->EnvColor;
-
- FLOAT_COLOR_TO_UBYTE_COLOR(r, fc[RCOMP]);
- FLOAT_COLOR_TO_UBYTE_COLOR(g, fc[GCOMP]);
- FLOAT_COLOR_TO_UBYTE_COLOR(b, fc[BCOMP]);
- FLOAT_COLOR_TO_UBYTE_COLOR(a, fc[ACOMP]);
-
- col = ((a << 24) |
- (r << 16) |
- (g << 8) |
- b);
- }
-
- {
- int i;
-
- i = imesa->TexBlendWordsUsed[unit];
- imesa->TexBlend[unit][i++] = STATE3D_COLOR_FACTOR_CMD(unit);
- imesa->TexBlend[unit][i++] = col;
-
- imesa->TexBlendWordsUsed[unit] = i;
- }
+ imesa->TexBlend[unit][used++] = STATE3D_COLOR_FACTOR_CMD(unit);
+ imesa->TexBlend[unit][used++] = ((a << 24) | (r << 16) | (g << 8) | b);
}
+ imesa->TexBlendWordsUsed[unit] = used;
I830_STATECHANGE( imesa, I830_UPLOAD_TEXBLEND_N(unit) );
}
imesa->TexBlend[0][pipe_num] |= TEXOP_LAST_STAGE;
}
}
-
-
-
projects / mesa.git / commitdiff