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Diffstat (limited to 'src/mesa/drivers/dri/i915-tex/i830_texblend.c')
-rw-r--r--src/mesa/drivers/dri/i915-tex/i830_texblend.c465
1 files changed, 0 insertions, 465 deletions
diff --git a/src/mesa/drivers/dri/i915-tex/i830_texblend.c b/src/mesa/drivers/dri/i915-tex/i830_texblend.c
deleted file mode 100644
index 4c1bee58d8e..00000000000
--- a/src/mesa/drivers/dri/i915-tex/i830_texblend.c
+++ /dev/null
@@ -1,465 +0,0 @@
-/**************************************************************************
- *
- * 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;
- }
-}
-
-
-/**
- * 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?
- */
-GLuint
-i830SetTexEnvCombine(struct i830_context *i830,
- const struct gl_tex_env_combine_state * combine,
- GLint blendUnit,
- GLuint texel_op,
- GLuint *state,
- const GLfloat *factor )
-{
- const GLuint numColorArgs = combine->_NumArgsRGB;
- const GLuint numAlphaArgs = combine->_NumArgsA;
-
- GLuint blendop;
- GLuint ablendop;
- GLuint args_RGB[3];
- GLuint args_A[3];
- GLuint rgb_shift;
- GLuint alpha_shift;
- GLboolean need_factor = 0;
- 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,
- };
-
- 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 (combine->ModeRGB) {
- case GL_DOT3_RGB_EXT:
- alpha_shift = combine->ScaleShiftA;
- rgb_shift = 0;
- break;
-
- case GL_DOT3_RGBA_EXT:
- alpha_shift = 0;
- rgb_shift = 0;
- break;
-
- default:
- rgb_shift = combine->ScaleShiftRGB;
- alpha_shift = combine->ScaleShiftA;
- break;
- }
-
-
- switch(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(combine->SourceRGB[i]) {
- case GL_TEXTURE:
- args_RGB[i] = texel_op;
- break;
- case GL_TEXTURE0:
- case GL_TEXTURE1:
- case GL_TEXTURE2:
- case GL_TEXTURE3:
- args_RGB[i] = GetTexelOp( combine->SourceRGB[i] - GL_TEXTURE0 );
- 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(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 ( combine->ModeRGB == GL_DOT3_RGBA_EXT ||
- 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(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(combine->SourceA[i]) {
- case GL_TEXTURE:
- args_A[i] = texel_op;
- break;
- case GL_TEXTURE0:
- case GL_TEXTURE1:
- case GL_TEXTURE2:
- case GL_TEXTURE3:
- args_A[i] = GetTexelOp( combine->SourceA[i] - GL_TEXTURE0 );
- 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(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 & alpha pipelines */
-
- used = 0;
- state[used++] = (_3DSTATE_MAP_BLEND_OP_CMD(blendUnit) |
- TEXPIPE_COLOR |
- ENABLE_TEXOUTPUT_WRT_SEL |
- TEXOP_OUTPUT_CURRENT |
- DISABLE_TEX_CNTRL_STAGE |
- TEXOP_MODIFY_PARMS |
- blendop);
- state[used++] = (_3DSTATE_MAP_BLEND_OP_CMD(blendUnit) |
- TEXPIPE_ALPHA |
- ENABLE_TEXOUTPUT_WRT_SEL |
- TEXOP_OUTPUT_CURRENT |
- TEXOP_MODIFY_PARMS |
- ablendop);
-
- for ( i = 0 ; i < numColorArgs ; i++ ) {
- state[used++] = (_3DSTATE_MAP_BLEND_ARG_CMD(blendUnit) |
- tex_blend_rgb[i] | args_RGB[i]);
- }
-
- for ( i = 0 ; i < numAlphaArgs ; i++ ) {
- state[used++] = (_3DSTATE_MAP_BLEND_ARG_CMD(blendUnit) |
- tex_blend_a[i] | args_A[i]);
- }
-
-
- if (need_factor)
- return emit_factor( blendUnit, state, used, factor );
- else
- return used;
-}
-
-
-static void emit_texblend( struct i830_context *i830, GLuint unit, GLuint blendUnit,
- GLboolean last_stage )
-{
- struct gl_texture_unit *texUnit = &i830->intel.ctx.Texture.Unit[unit];
- GLuint tmp[I830_TEXBLEND_SIZE], tmp_sz;
-
-
- if (0) fprintf(stderr, "%s unit %d\n", __FUNCTION__, unit);
-
- /* Update i830->state.TexBlend
- */
- tmp_sz = i830SetTexEnvCombine(i830, texUnit->_CurrentCombine, blendUnit,
- 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( struct i830_context *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( struct i830_context *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 );
- }
-}
-
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