/************************************************************************** * * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas. * 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"), to deal in the Software without restriction, including * without limitation the rights to use, copy, modify, merge, publish, * distribute, sub license, and/or sell copies of the Software, and to * permit persons to whom the Software is furnished to do so, subject to * the following conditions: * * The above copyright notice and this permission notice (including the * next paragraph) shall be included in all copies or substantial portions * of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. * **************************************************************************/ #include "glheader.h" #include "macros.h" #include "mtypes.h" #include "simple_list.h" #include "enums.h" #include "texformat.h" #include "texstore.h" #include "mm.h" #include "intel_screen.h" #include "intel_ioctl.h" #include "intel_tex.h" #include "i830_context.h" #include "i830_reg.h" /* ================================================================ * Texture combine functions */ static GLuint pass_through( GLuint *state, GLuint blendUnit ) { state[0] = (_3DSTATE_MAP_BLEND_OP_CMD(blendUnit) | TEXPIPE_COLOR | ENABLE_TEXOUTPUT_WRT_SEL | TEXOP_OUTPUT_CURRENT | DISABLE_TEX_CNTRL_STAGE | TEXOP_SCALE_1X | TEXOP_MODIFY_PARMS | TEXBLENDOP_ARG1); state[1] = (_3DSTATE_MAP_BLEND_OP_CMD(blendUnit) | TEXPIPE_ALPHA | ENABLE_TEXOUTPUT_WRT_SEL | TEXOP_OUTPUT_CURRENT | TEXOP_SCALE_1X | TEXOP_MODIFY_PARMS | TEXBLENDOP_ARG1); state[2] = (_3DSTATE_MAP_BLEND_ARG_CMD(blendUnit) | TEXPIPE_COLOR | TEXBLEND_ARG1 | TEXBLENDARG_MODIFY_PARMS | TEXBLENDARG_CURRENT); state[3] = (_3DSTATE_MAP_BLEND_ARG_CMD(blendUnit) | TEXPIPE_ALPHA | TEXBLEND_ARG1 | TEXBLENDARG_MODIFY_PARMS | TEXBLENDARG_CURRENT); return 4; } static GLuint emit_factor( GLuint blendUnit, GLuint *state, GLuint count, const GLfloat *factor ) { GLubyte r, g, b, a; GLuint col; if (0) fprintf(stderr, "emit constant %d: %.2f %.2f %.2f %.2f\n", blendUnit, factor[0], factor[1], factor[2], factor[3]); UNCLAMPED_FLOAT_TO_UBYTE(r, factor[0]); UNCLAMPED_FLOAT_TO_UBYTE(g, factor[1]); UNCLAMPED_FLOAT_TO_UBYTE(b, factor[2]); UNCLAMPED_FLOAT_TO_UBYTE(a, factor[3]); col = ((a << 24) | (r << 16) | (g << 8) | b); state[count++] = _3DSTATE_COLOR_FACTOR_N_CMD(blendUnit); state[count++] = col; return count; } 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; } } GLuint i830SetBlend_GL1_2(i830ContextPtr i830, int blendUnit, GLenum envMode, GLenum format, GLuint texel_op, GLuint *state, const GLfloat *factor) { if(INTEL_DEBUG&DEBUG_TEXTURE) fprintf(stderr, "%s %s %s texel_op(0x%x)\n", __FUNCTION__, _mesa_lookup_enum_by_nr(format), _mesa_lookup_enum_by_nr(envMode), texel_op); switch(envMode) { case GL_REPLACE: switch(format) { case GL_ALPHA: state[0] = (_3DSTATE_MAP_BLEND_OP_CMD(blendUnit) | TEXPIPE_COLOR | ENABLE_TEXOUTPUT_WRT_SEL | TEXOP_OUTPUT_CURRENT | DISABLE_TEX_CNTRL_STAGE | TEXOP_SCALE_1X | TEXOP_MODIFY_PARMS | TEXBLENDOP_ARG1); state[1] = (_3DSTATE_MAP_BLEND_OP_CMD(blendUnit) | TEXPIPE_ALPHA | ENABLE_TEXOUTPUT_WRT_SEL | TEXOP_OUTPUT_CURRENT | TEXOP_SCALE_1X | TEXOP_MODIFY_PARMS | TEXBLENDOP_ARG1); state[2] = (_3DSTATE_MAP_BLEND_ARG_CMD(blendUnit) | TEXPIPE_COLOR | TEXBLEND_ARG1 | TEXBLENDARG_MODIFY_PARMS | TEXBLENDARG_CURRENT); state[3] = (_3DSTATE_MAP_BLEND_ARG_CMD(blendUnit) | TEXPIPE_ALPHA | TEXBLEND_ARG1 | TEXBLENDARG_MODIFY_PARMS | texel_op); return 4; case GL_LUMINANCE: case GL_RGB: case GL_YCBCR_MESA: state[0] = (_3DSTATE_MAP_BLEND_OP_CMD(blendUnit) | TEXPIPE_COLOR | ENABLE_TEXOUTPUT_WRT_SEL | TEXOP_OUTPUT_CURRENT | DISABLE_TEX_CNTRL_STAGE | TEXOP_SCALE_1X | TEXOP_MODIFY_PARMS | TEXBLENDOP_ARG1); state[1] = (_3DSTATE_MAP_BLEND_OP_CMD(blendUnit) | TEXPIPE_ALPHA | ENABLE_TEXOUTPUT_WRT_SEL | TEXOP_OUTPUT_CURRENT | TEXOP_SCALE_1X | TEXOP_MODIFY_PARMS | TEXBLENDOP_ARG1); state[2] = (_3DSTATE_MAP_BLEND_ARG_CMD(blendUnit) | TEXPIPE_COLOR | TEXBLEND_ARG1 | TEXBLENDARG_MODIFY_PARMS | texel_op); state[3] = (_3DSTATE_MAP_BLEND_ARG_CMD(blendUnit) | TEXPIPE_ALPHA | TEXBLEND_ARG1 | TEXBLENDARG_MODIFY_PARMS | TEXBLENDARG_CURRENT); return 4; case GL_INTENSITY: case GL_LUMINANCE_ALPHA: case GL_RGBA: state[0] = (_3DSTATE_MAP_BLEND_OP_CMD(blendUnit) | TEXPIPE_COLOR | ENABLE_TEXOUTPUT_WRT_SEL | TEXOP_OUTPUT_CURRENT | DISABLE_TEX_CNTRL_STAGE | TEXOP_SCALE_1X | TEXOP_MODIFY_PARMS | TEXBLENDOP_ARG1); state[1] = (_3DSTATE_MAP_BLEND_OP_CMD(blendUnit) | TEXPIPE_ALPHA | ENABLE_TEXOUTPUT_WRT_SEL | TEXOP_OUTPUT_CURRENT | TEXOP_SCALE_1X | TEXOP_MODIFY_PARMS | TEXBLENDOP_ARG1); state[2] = (_3DSTATE_MAP_BLEND_ARG_CMD(blendUnit) | TEXPIPE_COLOR | TEXBLEND_ARG1 | TEXBLENDARG_MODIFY_PARMS | texel_op); state[3] = (_3DSTATE_MAP_BLEND_ARG_CMD(blendUnit) | TEXPIPE_ALPHA | TEXBLEND_ARG1 | TEXBLENDARG_MODIFY_PARMS | texel_op); return 4; default: /* Always set to passthru if something is funny */ return pass_through( state, blendUnit ); } case GL_MODULATE: switch(format) { case GL_ALPHA: state[0] = (_3DSTATE_MAP_BLEND_OP_CMD(blendUnit) | TEXPIPE_COLOR | ENABLE_TEXOUTPUT_WRT_SEL | TEXOP_OUTPUT_CURRENT | DISABLE_TEX_CNTRL_STAGE | TEXOP_SCALE_1X | TEXOP_MODIFY_PARMS | TEXBLENDOP_ARG1); state[1] = (_3DSTATE_MAP_BLEND_OP_CMD(blendUnit) | TEXPIPE_ALPHA | ENABLE_TEXOUTPUT_WRT_SEL | TEXOP_OUTPUT_CURRENT | TEXOP_SCALE_1X | TEXOP_MODIFY_PARMS | TEXBLENDOP_MODULATE); state[2] = (_3DSTATE_MAP_BLEND_ARG_CMD(blendUnit) | TEXPIPE_COLOR | TEXBLEND_ARG1 | TEXBLENDARG_MODIFY_PARMS | TEXBLENDARG_CURRENT); state[3] = (_3DSTATE_MAP_BLEND_ARG_CMD(blendUnit) | TEXPIPE_ALPHA | TEXBLEND_ARG1 | TEXBLENDARG_MODIFY_PARMS | texel_op); state[4] = (_3DSTATE_MAP_BLEND_ARG_CMD(blendUnit) | TEXPIPE_ALPHA | TEXBLEND_ARG2 | TEXBLENDARG_MODIFY_PARMS | TEXBLENDARG_CURRENT); return 5; case GL_LUMINANCE: case GL_RGB: case GL_YCBCR_MESA: state[0] = (_3DSTATE_MAP_BLEND_OP_CMD(blendUnit) | TEXPIPE_COLOR | ENABLE_TEXOUTPUT_WRT_SEL | TEXOP_OUTPUT_CURRENT | DISABLE_TEX_CNTRL_STAGE | TEXOP_SCALE_1X | TEXOP_MODIFY_PARMS | TEXBLENDOP_MODULATE); state[1] = (_3DSTATE_MAP_BLEND_OP_CMD(blendUnit) | TEXPIPE_ALPHA | ENABLE_TEXOUTPUT_WRT_SEL | TEXOP_OUTPUT_CURRENT | TEXOP_SCALE_1X | TEXOP_MODIFY_PARMS | TEXBLENDOP_ARG1); state[2] = (_3DSTATE_MAP_BLEND_ARG_CMD(blendUnit) | TEXPIPE_COLOR | TEXBLEND_ARG1 | TEXBLENDARG_MODIFY_PARMS | texel_op); state[3] = (_3DSTATE_MAP_BLEND_ARG_CMD(blendUnit) | TEXPIPE_COLOR | TEXBLEND_ARG2 | TEXBLENDARG_MODIFY_PARMS | TEXBLENDARG_CURRENT); state[4] = (_3DSTATE_MAP_BLEND_ARG_CMD(blendUnit) | TEXPIPE_ALPHA | TEXBLEND_ARG1 | TEXBLENDARG_MODIFY_PARMS | TEXBLENDARG_CURRENT); return 5; case GL_INTENSITY: case GL_LUMINANCE_ALPHA: case GL_RGBA: state[0] = (_3DSTATE_MAP_BLEND_OP_CMD(blendUnit) | TEXPIPE_COLOR | ENABLE_TEXOUTPUT_WRT_SEL | TEXOP_OUTPUT_CURRENT | DISABLE_TEX_CNTRL_STAGE | TEXOP_SCALE_1X | TEXOP_MODIFY_PARMS | TEXBLENDOP_MODULATE); state[1] = (_3DSTATE_MAP_BLEND_OP_CMD(blendUnit) | TEXPIPE_ALPHA | ENABLE_TEXOUTPUT_WRT_SEL | TEXOP_OUTPUT_CURRENT | TEXOP_SCALE_1X | TEXOP_MODIFY_PARMS | TEXBLENDOP_MODULATE); state[2] = (_3DSTATE_MAP_BLEND_ARG_CMD(blendUnit) | TEXPIPE_COLOR | TEXBLEND_ARG1 | TEXBLENDARG_MODIFY_PARMS | texel_op); state[3] = (_3DSTATE_MAP_BLEND_ARG_CMD(blendUnit) | TEXPIPE_COLOR | TEXBLEND_ARG2 | TEXBLENDARG_MODIFY_PARMS | TEXBLENDARG_CURRENT); state[4] = (_3DSTATE_MAP_BLEND_ARG_CMD(blendUnit) | TEXPIPE_ALPHA | TEXBLEND_ARG1 | TEXBLENDARG_MODIFY_PARMS | texel_op); state[5] = (_3DSTATE_MAP_BLEND_ARG_CMD(blendUnit) | TEXPIPE_ALPHA | TEXBLEND_ARG2 | TEXBLENDARG_MODIFY_PARMS | TEXBLENDARG_CURRENT); return 6; default: /* Always set to passthru if something is funny */ return pass_through( state, blendUnit ); } case GL_DECAL: switch(format) { case GL_RGB: case GL_YCBCR_MESA: state[0] = (_3DSTATE_MAP_BLEND_OP_CMD(blendUnit) | TEXPIPE_COLOR | ENABLE_TEXOUTPUT_WRT_SEL | TEXOP_OUTPUT_CURRENT | DISABLE_TEX_CNTRL_STAGE | TEXOP_SCALE_1X | TEXOP_MODIFY_PARMS | TEXBLENDOP_ARG1); state[1] = (_3DSTATE_MAP_BLEND_OP_CMD(blendUnit) | TEXPIPE_ALPHA | ENABLE_TEXOUTPUT_WRT_SEL | TEXOP_OUTPUT_CURRENT | TEXOP_SCALE_1X | TEXOP_MODIFY_PARMS | TEXBLENDOP_ARG1); state[2] = (_3DSTATE_MAP_BLEND_ARG_CMD(blendUnit) | TEXPIPE_COLOR | TEXBLEND_ARG1 | TEXBLENDARG_MODIFY_PARMS | texel_op); state[3] = (_3DSTATE_MAP_BLEND_ARG_CMD(blendUnit) | TEXPIPE_ALPHA | TEXBLEND_ARG1 | TEXBLENDARG_MODIFY_PARMS | TEXBLENDARG_CURRENT); return 4; case GL_RGBA: state[0] = (_3DSTATE_MAP_BLEND_OP_CMD(blendUnit) | TEXPIPE_COLOR | ENABLE_TEXOUTPUT_WRT_SEL | TEXOP_OUTPUT_CURRENT | DISABLE_TEX_CNTRL_STAGE | TEXOP_SCALE_1X | TEXOP_MODIFY_PARMS | TEXBLENDOP_BLEND); state[1] = (_3DSTATE_MAP_BLEND_OP_CMD(blendUnit) | TEXPIPE_ALPHA | ENABLE_TEXOUTPUT_WRT_SEL | TEXOP_OUTPUT_CURRENT | TEXOP_SCALE_1X | TEXOP_MODIFY_PARMS | TEXBLENDOP_ARG1); state[2] = (_3DSTATE_MAP_BLEND_ARG_CMD(blendUnit) | TEXPIPE_COLOR | TEXBLEND_ARG0 | TEXBLENDARG_MODIFY_PARMS | TEXBLENDARG_REPLICATE_ALPHA | texel_op); state[3] = (_3DSTATE_MAP_BLEND_ARG_CMD(blendUnit) | TEXPIPE_COLOR | TEXBLEND_ARG1 | TEXBLENDARG_MODIFY_PARMS | texel_op); state[4] = (_3DSTATE_MAP_BLEND_ARG_CMD(blendUnit) | TEXPIPE_COLOR | TEXBLEND_ARG2 | TEXBLENDARG_MODIFY_PARMS | TEXBLENDARG_CURRENT); state[5] = (_3DSTATE_MAP_BLEND_ARG_CMD(blendUnit) | TEXPIPE_ALPHA | TEXBLEND_ARG1 | TEXBLENDARG_MODIFY_PARMS | TEXBLENDARG_CURRENT); return 6; default: /* Always set to passthru if something is funny */ return pass_through( state, blendUnit ); } case GL_BLEND: switch(format) { case GL_ALPHA: state[0] = (_3DSTATE_MAP_BLEND_OP_CMD(blendUnit) | TEXPIPE_COLOR | ENABLE_TEXOUTPUT_WRT_SEL | TEXOP_OUTPUT_CURRENT | DISABLE_TEX_CNTRL_STAGE | TEXOP_SCALE_1X | TEXOP_MODIFY_PARMS | TEXBLENDOP_ARG1); state[1] = (_3DSTATE_MAP_BLEND_OP_CMD(blendUnit) | TEXPIPE_ALPHA | ENABLE_TEXOUTPUT_WRT_SEL | TEXOP_OUTPUT_CURRENT | TEXOP_SCALE_1X | TEXOP_MODIFY_PARMS | TEXBLENDOP_MODULATE); state[2] = (_3DSTATE_MAP_BLEND_ARG_CMD(blendUnit) | TEXPIPE_COLOR | TEXBLEND_ARG1 | TEXBLENDARG_MODIFY_PARMS | TEXBLENDARG_CURRENT); state[3] = (_3DSTATE_MAP_BLEND_ARG_CMD(blendUnit) | TEXPIPE_ALPHA | TEXBLEND_ARG1 | TEXBLENDARG_MODIFY_PARMS | texel_op); state[4] = (_3DSTATE_MAP_BLEND_ARG_CMD(blendUnit) | TEXPIPE_ALPHA | TEXBLEND_ARG2 | TEXBLENDARG_MODIFY_PARMS | TEXBLENDARG_CURRENT); return 5; case GL_LUMINANCE: case GL_RGB: case GL_YCBCR_MESA: state[0] = (_3DSTATE_MAP_BLEND_OP_CMD(blendUnit) | TEXPIPE_COLOR | ENABLE_TEXOUTPUT_WRT_SEL | TEXOP_OUTPUT_CURRENT | DISABLE_TEX_CNTRL_STAGE | TEXOP_SCALE_1X | TEXOP_MODIFY_PARMS | TEXBLENDOP_BLEND); state[1] = (_3DSTATE_MAP_BLEND_OP_CMD(blendUnit) | TEXPIPE_ALPHA | ENABLE_TEXOUTPUT_WRT_SEL | TEXOP_OUTPUT_CURRENT | TEXOP_SCALE_1X | TEXOP_MODIFY_PARMS | TEXBLENDOP_ARG1); state[2] = (_3DSTATE_MAP_BLEND_ARG_CMD(blendUnit) | TEXPIPE_COLOR | TEXBLEND_ARG0 | TEXBLENDARG_MODIFY_PARMS | texel_op); state[3] = (_3DSTATE_MAP_BLEND_ARG_CMD(blendUnit) | TEXPIPE_COLOR | TEXBLEND_ARG1 | TEXBLENDARG_MODIFY_PARMS | TEXBLENDARG_FACTOR_N); state[4] = (_3DSTATE_MAP_BLEND_ARG_CMD(blendUnit) | TEXPIPE_COLOR | TEXBLEND_ARG2 | TEXBLENDARG_MODIFY_PARMS | TEXBLENDARG_CURRENT); state[5] = (_3DSTATE_MAP_BLEND_ARG_CMD(blendUnit) | TEXPIPE_ALPHA | TEXBLEND_ARG1 | TEXBLENDARG_MODIFY_PARMS | TEXBLENDARG_CURRENT); return emit_factor( blendUnit, state, 6, factor ); case GL_INTENSITY: state[0] = (_3DSTATE_MAP_BLEND_OP_CMD(blendUnit) | TEXPIPE_COLOR | ENABLE_TEXOUTPUT_WRT_SEL | TEXOP_OUTPUT_CURRENT | DISABLE_TEX_CNTRL_STAGE | TEXOP_SCALE_1X | TEXOP_MODIFY_PARMS | TEXBLENDOP_BLEND); state[1] = (_3DSTATE_MAP_BLEND_OP_CMD(blendUnit) | TEXPIPE_ALPHA | ENABLE_TEXOUTPUT_WRT_SEL | TEXOP_OUTPUT_CURRENT | TEXOP_SCALE_1X | TEXOP_MODIFY_PARMS | TEXBLENDOP_BLEND); state[2] = (_3DSTATE_MAP_BLEND_ARG_CMD(blendUnit) | TEXPIPE_COLOR | TEXBLEND_ARG0 | TEXBLENDARG_MODIFY_PARMS | texel_op); state[3] = (_3DSTATE_MAP_BLEND_ARG_CMD(blendUnit) | TEXPIPE_COLOR | TEXBLEND_ARG1 | TEXBLENDARG_MODIFY_PARMS | TEXBLENDARG_FACTOR_N); state[4] = (_3DSTATE_MAP_BLEND_ARG_CMD(blendUnit) | TEXPIPE_COLOR | TEXBLEND_ARG2 | TEXBLENDARG_MODIFY_PARMS | TEXBLENDARG_CURRENT); state[5] = (_3DSTATE_MAP_BLEND_ARG_CMD(blendUnit) | TEXPIPE_ALPHA | TEXBLEND_ARG0 | TEXBLENDARG_MODIFY_PARMS | texel_op); state[6] = (_3DSTATE_MAP_BLEND_ARG_CMD(blendUnit) | TEXPIPE_ALPHA | TEXBLEND_ARG1 | TEXBLENDARG_MODIFY_PARMS | TEXBLENDARG_FACTOR_N); state[7] = (_3DSTATE_MAP_BLEND_ARG_CMD(blendUnit) | TEXPIPE_ALPHA | TEXBLEND_ARG2 | TEXBLENDARG_MODIFY_PARMS | TEXBLENDARG_CURRENT); return emit_factor( blendUnit, state, 8, factor ); case GL_LUMINANCE_ALPHA: case GL_RGBA: state[0] = (_3DSTATE_MAP_BLEND_OP_CMD(blendUnit) | TEXPIPE_COLOR | ENABLE_TEXOUTPUT_WRT_SEL | TEXOP_OUTPUT_CURRENT | DISABLE_TEX_CNTRL_STAGE | TEXOP_SCALE_1X | TEXOP_MODIFY_PARMS | TEXBLENDOP_BLEND); state[1] = (_3DSTATE_MAP_BLEND_OP_CMD(blendUnit) | TEXPIPE_ALPHA | ENABLE_TEXOUTPUT_WRT_SEL | TEXOP_OUTPUT_CURRENT | TEXOP_SCALE_1X | TEXOP_MODIFY_PARMS | TEXBLENDOP_MODULATE); state[2] = (_3DSTATE_MAP_BLEND_ARG_CMD(blendUnit) | TEXPIPE_COLOR | TEXBLEND_ARG0 | TEXBLENDARG_MODIFY_PARMS | texel_op); state[3] = (_3DSTATE_MAP_BLEND_ARG_CMD(blendUnit) | TEXPIPE_COLOR | TEXBLEND_ARG1 | TEXBLENDARG_MODIFY_PARMS | TEXBLENDARG_FACTOR_N); state[4] = (_3DSTATE_MAP_BLEND_ARG_CMD(blendUnit) | TEXPIPE_COLOR | TEXBLEND_ARG2 | TEXBLENDARG_MODIFY_PARMS | TEXBLENDARG_CURRENT); state[5] = (_3DSTATE_MAP_BLEND_ARG_CMD(blendUnit) | TEXPIPE_ALPHA | TEXBLEND_ARG1 | TEXBLENDARG_MODIFY_PARMS | texel_op); state[6] = (_3DSTATE_MAP_BLEND_ARG_CMD(blendUnit) | TEXPIPE_ALPHA | TEXBLEND_ARG2 | TEXBLENDARG_MODIFY_PARMS | TEXBLENDARG_CURRENT); return emit_factor( blendUnit, state, 7, factor ); default: /* Always set to passthru if something is funny */ return pass_through( state, blendUnit ); } case GL_ADD: switch(format) { case GL_ALPHA: state[0] = (_3DSTATE_MAP_BLEND_OP_CMD(blendUnit) | TEXPIPE_COLOR | ENABLE_TEXOUTPUT_WRT_SEL | TEXOP_OUTPUT_CURRENT | DISABLE_TEX_CNTRL_STAGE | TEXOP_SCALE_1X | TEXOP_MODIFY_PARMS | TEXBLENDOP_ARG1); state[1] = (_3DSTATE_MAP_BLEND_OP_CMD(blendUnit) | TEXPIPE_ALPHA | ENABLE_TEXOUTPUT_WRT_SEL | TEXOP_OUTPUT_CURRENT | TEXOP_SCALE_1X | TEXOP_MODIFY_PARMS | TEXBLENDOP_MODULATE); state[2] = (_3DSTATE_MAP_BLEND_ARG_CMD(blendUnit) | TEXPIPE_COLOR | TEXBLEND_ARG1 | TEXBLENDARG_MODIFY_PARMS | TEXBLENDARG_CURRENT); state[3] = (_3DSTATE_MAP_BLEND_ARG_CMD(blendUnit) | TEXPIPE_ALPHA | TEXBLEND_ARG1 | TEXBLENDARG_MODIFY_PARMS | texel_op); state[4] = (_3DSTATE_MAP_BLEND_ARG_CMD(blendUnit) | TEXPIPE_ALPHA | TEXBLEND_ARG2 | TEXBLENDARG_MODIFY_PARMS | TEXBLENDARG_CURRENT); return 5; case GL_LUMINANCE: case GL_RGB: case GL_YCBCR_MESA: state[0] = (_3DSTATE_MAP_BLEND_OP_CMD(blendUnit) | TEXPIPE_COLOR | ENABLE_TEXOUTPUT_WRT_SEL | TEXOP_OUTPUT_CURRENT | DISABLE_TEX_CNTRL_STAGE | TEXOP_SCALE_1X | TEXOP_MODIFY_PARMS | TEXBLENDOP_ADD); state[1] = (_3DSTATE_MAP_BLEND_OP_CMD(blendUnit) | TEXPIPE_ALPHA | ENABLE_TEXOUTPUT_WRT_SEL | TEXOP_OUTPUT_CURRENT | TEXOP_SCALE_1X | TEXOP_MODIFY_PARMS | TEXBLENDOP_ARG1); state[2] = (_3DSTATE_MAP_BLEND_ARG_CMD(blendUnit) | TEXPIPE_COLOR | TEXBLEND_ARG1 | TEXBLENDARG_MODIFY_PARMS | texel_op); state[3] = (_3DSTATE_MAP_BLEND_ARG_CMD(blendUnit) | TEXPIPE_COLOR | TEXBLEND_ARG2 | TEXBLENDARG_MODIFY_PARMS | TEXBLENDARG_CURRENT); state[4] = (_3DSTATE_MAP_BLEND_ARG_CMD(blendUnit) | TEXPIPE_ALPHA | TEXBLEND_ARG1 | TEXBLENDARG_MODIFY_PARMS | TEXBLENDARG_CURRENT); return 5; case GL_INTENSITY: state[0] = (_3DSTATE_MAP_BLEND_OP_CMD(blendUnit) | TEXPIPE_COLOR | ENABLE_TEXOUTPUT_WRT_SEL | TEXOP_OUTPUT_CURRENT | DISABLE_TEX_CNTRL_STAGE | TEXOP_SCALE_1X | TEXOP_MODIFY_PARMS | TEXBLENDOP_ADD); state[1] = (_3DSTATE_MAP_BLEND_OP_CMD(blendUnit) | TEXPIPE_ALPHA | ENABLE_TEXOUTPUT_WRT_SEL | TEXOP_OUTPUT_CURRENT | TEXOP_SCALE_1X | TEXOP_MODIFY_PARMS | TEXBLENDOP_ADD); state[2] = (_3DSTATE_MAP_BLEND_ARG_CMD(blendUnit) | TEXPIPE_COLOR | TEXBLEND_ARG1 | TEXBLENDARG_MODIFY_PARMS | texel_op); state[3] = (_3DSTATE_MAP_BLEND_ARG_CMD(blendUnit) | TEXPIPE_COLOR | TEXBLEND_ARG2 | TEXBLENDARG_MODIFY_PARMS | TEXBLENDARG_CURRENT); state[4] = (_3DSTATE_MAP_BLEND_ARG_CMD(blendUnit) | TEXPIPE_ALPHA | TEXBLEND_ARG1 | TEXBLENDARG_MODIFY_PARMS | texel_op); state[5] = (_3DSTATE_MAP_BLEND_ARG_CMD(blendUnit) | TEXPIPE_ALPHA | TEXBLEND_ARG2 | TEXBLENDARG_MODIFY_PARMS | TEXBLENDARG_CURRENT); return 6; case GL_LUMINANCE_ALPHA: case GL_RGBA: state[0] = (_3DSTATE_MAP_BLEND_OP_CMD(blendUnit) | TEXPIPE_COLOR | ENABLE_TEXOUTPUT_WRT_SEL | TEXOP_OUTPUT_CURRENT | DISABLE_TEX_CNTRL_STAGE | TEXOP_SCALE_1X | TEXOP_MODIFY_PARMS | TEXBLENDOP_ADD); state[1] = (_3DSTATE_MAP_BLEND_OP_CMD(blendUnit) | TEXPIPE_ALPHA | ENABLE_TEXOUTPUT_WRT_SEL | TEXOP_OUTPUT_CURRENT | TEXOP_SCALE_1X | TEXOP_MODIFY_PARMS | TEXBLENDOP_MODULATE); state[2] = (_3DSTATE_MAP_BLEND_ARG_CMD(blendUnit) | TEXPIPE_COLOR | TEXBLEND_ARG1 | TEXBLENDARG_MODIFY_PARMS | texel_op); state[3] = (_3DSTATE_MAP_BLEND_ARG_CMD(blendUnit) | TEXPIPE_COLOR | TEXBLEND_ARG2 | TEXBLENDARG_MODIFY_PARMS | TEXBLENDARG_CURRENT); state[4] = (_3DSTATE_MAP_BLEND_ARG_CMD(blendUnit) | TEXPIPE_ALPHA | TEXBLEND_ARG1 | TEXBLENDARG_MODIFY_PARMS | texel_op); state[5] = (_3DSTATE_MAP_BLEND_ARG_CMD(blendUnit) | TEXPIPE_ALPHA | TEXBLEND_ARG2 | TEXBLENDARG_MODIFY_PARMS | TEXBLENDARG_CURRENT); return 6; default: /* Always set to passthru if something is funny */ return pass_through( state, blendUnit ); } default: /* Always set to passthru if something is funny */ return pass_through( state, blendUnit ); } } static GLuint i830SetTexEnvCombine(i830ContextPtr i830, const struct gl_texture_unit *texUnit, GLint blendUnit, GLuint texel_op, GLuint *state, const GLfloat *factor ) { GLuint blendop; GLuint ablendop; GLuint args_RGB[3]; GLuint args_A[3]; GLuint rgb_shift; GLuint alpha_shift; GLboolean need_factor = 0; int i; if(INTEL_DEBUG&DEBUG_TEXTURE) fprintf(stderr, "%s\n", __FUNCTION__); /* The EXT version of the DOT3 extension does not support the * scale factor, but the ARB version (and the version in OpenGL * 1.3) does. */ switch (texUnit->Combine.ModeRGB) { case GL_DOT3_RGB_EXT: alpha_shift = texUnit->Combine.ScaleShiftA; rgb_shift = 0; break; case GL_DOT3_RGBA_EXT: alpha_shift = 0; rgb_shift = 0; break; default: rgb_shift = texUnit->Combine.ScaleShiftRGB; alpha_shift = texUnit->Combine.ScaleShiftA; break; } switch(texUnit->Combine.ModeRGB) { case GL_REPLACE: blendop = TEXBLENDOP_ARG1; break; case GL_MODULATE: blendop = TEXBLENDOP_MODULATE; break; case GL_ADD: blendop = TEXBLENDOP_ADD; break; case GL_ADD_SIGNED: blendop = TEXBLENDOP_ADDSIGNED; break; case GL_INTERPOLATE: blendop = TEXBLENDOP_BLEND; break; case GL_SUBTRACT: blendop = TEXBLENDOP_SUBTRACT; break; case GL_DOT3_RGB_EXT: case GL_DOT3_RGB: blendop = TEXBLENDOP_DOT3; break; case GL_DOT3_RGBA_EXT: case GL_DOT3_RGBA: blendop = TEXBLENDOP_DOT3; break; default: return pass_through( state, blendUnit ); } blendop |= (rgb_shift << TEXOP_SCALE_SHIFT); /* Handle RGB args */ for(i = 0; i < 3; i++) { switch(texUnit->Combine.SourceRGB[i]) { case GL_TEXTURE: args_RGB[i] = texel_op; break; case GL_CONSTANT: args_RGB[i] = TEXBLENDARG_FACTOR_N; need_factor = 1; break; case GL_PRIMARY_COLOR: args_RGB[i] = TEXBLENDARG_DIFFUSE; break; case GL_PREVIOUS: args_RGB[i] = TEXBLENDARG_CURRENT; break; default: return pass_through( state, blendUnit ); } switch(texUnit->Combine.OperandRGB[i]) { case GL_SRC_COLOR: args_RGB[i] |= 0; 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); break; default: return pass_through( state, blendUnit ); } } /* Need to knobble the alpha calculations of TEXBLENDOP_DOT4 to * match the spec. Can't use DOT3 as it won't propogate values * into alpha as required: * * Note - the global factor is set up with alpha == .5, so * the alpha part of the DOT4 calculation should be zero. */ if ( texUnit->Combine.ModeRGB == GL_DOT3_RGBA_EXT || texUnit->Combine.ModeRGB == GL_DOT3_RGBA ) { ablendop = TEXBLENDOP_DOT4; args_A[0] = TEXBLENDARG_FACTOR; /* the global factor */ args_A[1] = TEXBLENDARG_FACTOR; args_A[2] = TEXBLENDARG_FACTOR; } else { switch(texUnit->Combine.ModeA) { case GL_REPLACE: ablendop = TEXBLENDOP_ARG1; break; case GL_MODULATE: ablendop = TEXBLENDOP_MODULATE; break; case GL_ADD: ablendop = TEXBLENDOP_ADD; break; case GL_ADD_SIGNED: ablendop = TEXBLENDOP_ADDSIGNED; break; case GL_INTERPOLATE: ablendop = TEXBLENDOP_BLEND; break; case GL_SUBTRACT: ablendop = TEXBLENDOP_SUBTRACT; break; default: return pass_through( state, blendUnit ); } ablendop |= (alpha_shift << TEXOP_SCALE_SHIFT); /* Handle A args */ for(i = 0; i < 3; i++) { switch(texUnit->Combine.SourceA[i]) { case GL_TEXTURE: args_A[i] = texel_op; break; case GL_CONSTANT: args_A[i] = TEXBLENDARG_FACTOR_N; need_factor = 1; break; case GL_PRIMARY_COLOR: args_A[i] = TEXBLENDARG_DIFFUSE; break; case GL_PREVIOUS: args_A[i] = TEXBLENDARG_CURRENT; break; default: return pass_through( state, blendUnit ); } switch(texUnit->Combine.OperandA[i]) { case GL_SRC_ALPHA: args_A[i] |= 0; break; case GL_ONE_MINUS_SRC_ALPHA: args_A[i] |= TEXBLENDARG_INV_ARG; break; default: return pass_through( state, blendUnit ); } } } /* Native Arg1 == Arg0 in GL_EXT_texture_env_combine spec */ /* Native Arg2 == Arg1 in GL_EXT_texture_env_combine spec */ /* Native Arg0 == Arg2 in GL_EXT_texture_env_combine spec */ /* When we render we need to figure out which is the last really enabled * tex unit, and put last stage on it */ /* Build color pipeline */ state[0] = (_3DSTATE_MAP_BLEND_OP_CMD(blendUnit) | TEXPIPE_COLOR | ENABLE_TEXOUTPUT_WRT_SEL | TEXOP_OUTPUT_CURRENT | DISABLE_TEX_CNTRL_STAGE | TEXOP_MODIFY_PARMS | blendop); state[1] = (_3DSTATE_MAP_BLEND_ARG_CMD(blendUnit) | TEXPIPE_COLOR | TEXBLEND_ARG1 | TEXBLENDARG_MODIFY_PARMS | args_RGB[0]); state[2] = (_3DSTATE_MAP_BLEND_ARG_CMD(blendUnit) | TEXPIPE_COLOR | TEXBLEND_ARG2 | TEXBLENDARG_MODIFY_PARMS | args_RGB[1]); state[3] = (_3DSTATE_MAP_BLEND_ARG_CMD(blendUnit) | TEXPIPE_COLOR | TEXBLEND_ARG0 | TEXBLENDARG_MODIFY_PARMS | args_RGB[2]); /* Build Alpha pipeline */ state[4] = (_3DSTATE_MAP_BLEND_OP_CMD(blendUnit) | TEXPIPE_ALPHA | ENABLE_TEXOUTPUT_WRT_SEL | TEXOP_OUTPUT_CURRENT | TEXOP_MODIFY_PARMS | ablendop); state[5] = (_3DSTATE_MAP_BLEND_ARG_CMD(blendUnit) | TEXPIPE_ALPHA | TEXBLEND_ARG1 | TEXBLENDARG_MODIFY_PARMS | args_A[0]); state[6] = (_3DSTATE_MAP_BLEND_ARG_CMD(blendUnit) | TEXPIPE_ALPHA | TEXBLEND_ARG2 | TEXBLENDARG_MODIFY_PARMS | args_A[1]); state[7] = (_3DSTATE_MAP_BLEND_ARG_CMD(blendUnit) | TEXPIPE_ALPHA | TEXBLEND_ARG0 | TEXBLENDARG_MODIFY_PARMS | args_A[2]); if (need_factor) return emit_factor( blendUnit, state, 8, factor ); else return 8; } static void emit_texblend( i830ContextPtr i830, GLuint unit, GLuint blendUnit, GLboolean last_stage ) { struct gl_texture_unit *texUnit = &i830->intel.ctx.Texture.Unit[unit]; struct gl_texture_object *tObj = texUnit->_Current; i830TextureObjectPtr t = (i830TextureObjectPtr)tObj->DriverData; GLuint tmp[I830_TEXBLEND_SIZE], tmp_sz; if (0) fprintf(stderr, "%s unit %d\n", __FUNCTION__, unit); /* Update i830->state.TexBlend */ if (texUnit->EnvMode == GL_COMBINE) { tmp_sz = i830SetTexEnvCombine(i830, texUnit, blendUnit, GetTexelOp(unit), tmp, texUnit->EnvColor ); } else { tmp_sz = i830SetBlend_GL1_2(i830, blendUnit, texUnit->EnvMode, t->intel.image[0][0].internalFormat, GetTexelOp(unit), tmp, texUnit->EnvColor ); } if (last_stage) tmp[0] |= TEXOP_LAST_STAGE; if (tmp_sz != i830->state.TexBlendWordsUsed[blendUnit] || memcmp( tmp, i830->state.TexBlend[blendUnit], tmp_sz * sizeof(GLuint))) { I830_STATECHANGE( i830, I830_UPLOAD_TEXBLEND(blendUnit) ); memcpy( i830->state.TexBlend[blendUnit], tmp, tmp_sz * sizeof(GLuint)); i830->state.TexBlendWordsUsed[blendUnit] = tmp_sz; } I830_ACTIVESTATE(i830, I830_UPLOAD_TEXBLEND(blendUnit), GL_TRUE); } static void emit_passthrough( i830ContextPtr i830 ) { GLuint tmp[I830_TEXBLEND_SIZE], tmp_sz; GLuint unit = 0; tmp_sz = pass_through( tmp, unit ); tmp[0] |= TEXOP_LAST_STAGE; if (tmp_sz != i830->state.TexBlendWordsUsed[unit] || memcmp( tmp, i830->state.TexBlend[unit], tmp_sz * sizeof(GLuint))) { I830_STATECHANGE( i830, I830_UPLOAD_TEXBLEND(unit) ); memcpy( i830->state.TexBlend[unit], tmp, tmp_sz * sizeof(GLuint)); i830->state.TexBlendWordsUsed[unit] = tmp_sz; } I830_ACTIVESTATE(i830, I830_UPLOAD_TEXBLEND(unit), GL_TRUE); } void i830EmitTextureBlend( i830ContextPtr i830 ) { GLcontext *ctx = &i830->intel.ctx; GLuint unit, last_stage = 0, blendunit = 0; I830_ACTIVESTATE(i830, I830_UPLOAD_TEXBLEND_ALL, GL_FALSE); if (ctx->Texture._EnabledUnits) { for (unit = 0 ; unit < ctx->Const.MaxTextureUnits ; unit++) if (ctx->Texture.Unit[unit]._ReallyEnabled) last_stage = unit; for (unit = 0 ; unit < ctx->Const.MaxTextureUnits ; unit++) if (ctx->Texture.Unit[unit]._ReallyEnabled) emit_texblend( i830, unit, blendunit++, last_stage == unit ); } else { emit_passthrough( i830 ); } }