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diff --git a/src/mesa/drivers/glide/fxsetup.h b/src/mesa/drivers/glide/fxsetup.h
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+/*
+ * Mesa 3-D graphics library
+ * Version: 4.0
+ *
+ * Copyright (C) 1999-2001 Brian Paul 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, sublicense,
+ * 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 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 NONINFRINGEMENT. IN NO EVENT SHALL
+ * BRIAN PAUL 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.
+ */
+
+/* Authors:
+ * David Bucciarelli
+ * Brian Paul
+ * Daryll Strauss
+ * Keith Whitwell
+ * Daniel Borca
+ * Hiroshi Morii
+ */
+
+/* fxsetup.c - 3Dfx VooDoo rendering mode setup functions */
+/* [dBorca] Hack alert:
+ * this code belongs to fxsetup.c, but I didn't want to clutter
+ * the original code with Napalm specifics, in order to keep things
+ * clear -- especially for backward compatibility. I should have
+ * put it into another .c file, but I didn't want to export so many
+ * things...
+ * The point is, Napalm uses a different technique for texture env.
+ * SST1 Single texturing:
+ * setup standard grTexCombine
+ * fiddle with grColorCombine/grAlphaCombine
+ * SST1 Multi texturing:
+ * fiddle with grTexCombine/grColorCombine/grAlphaCombine
+ * Napalm Single texturing:
+ * setup standard grColorCombineExt/grAlphaCombineExt
+ * fiddle with grTexColorCombine/grTexAlphaCombine
+ * Napalm Multi texturing:
+ * setup standard grColorCombineExt/grAlphaCombineExt
+ * fiddle with grTexColorCombine/grTexAlphaCombine
+ */
+
+/*
+ * These macros are used below when handling COMBINE_EXT.
+ */
+#define TEXENV_OPERAND_INVERTED(operand) \
+ (((operand) == GL_ONE_MINUS_SRC_ALPHA) \
+ || ((operand) == GL_ONE_MINUS_SRC_COLOR))
+#define TEXENV_OPERAND_ALPHA(operand) \
+ (((operand) == GL_SRC_ALPHA) || ((operand) == GL_ONE_MINUS_SRC_ALPHA))
+#define TEXENV_SETUP_ARG_A(param, source, operand, iteratedAlpha) \
+ switch (source) { \
+ case GL_TEXTURE: \
+ param = GR_CMBX_LOCAL_TEXTURE_ALPHA; \
+ break; \
+ case GL_CONSTANT_EXT: \
+ param = GR_CMBX_TMU_CALPHA; \
+ break; \
+ case GL_PRIMARY_COLOR_EXT: \
+ param = GR_CMBX_ITALPHA; \
+ break; \
+ case GL_PREVIOUS_EXT: \
+ param = iteratedAlpha; \
+ break; \
+ default: \
+ /* \
+ * This is here just to keep from getting \
+ * compiler warnings. \
+ */ \
+ param = GR_CMBX_ZERO; \
+ break; \
+ }
+
+#define TEXENV_SETUP_ARG_RGB(param, source, operand, iteratedColor, iteratedAlpha) \
+ if (!TEXENV_OPERAND_ALPHA(operand)) { \
+ switch (source) { \
+ case GL_TEXTURE: \
+ param = GR_CMBX_LOCAL_TEXTURE_RGB; \
+ break; \
+ case GL_CONSTANT_EXT: \
+ param = GR_CMBX_TMU_CCOLOR; \
+ break; \
+ case GL_PRIMARY_COLOR_EXT: \
+ param = GR_CMBX_ITRGB; \
+ break; \
+ case GL_PREVIOUS_EXT: \
+ param = iteratedColor; \
+ break; \
+ default: \
+ /* \
+ * This is here just to keep from getting \
+ * compiler warnings. \
+ */ \
+ param = GR_CMBX_ZERO; \
+ break; \
+ } \
+ } else { \
+ switch (source) { \
+ case GL_TEXTURE: \
+ param = GR_CMBX_LOCAL_TEXTURE_ALPHA; \
+ break; \
+ case GL_CONSTANT_EXT: \
+ param = GR_CMBX_TMU_CALPHA; \
+ break; \
+ case GL_PRIMARY_COLOR_EXT: \
+ param = GR_CMBX_ITALPHA; \
+ break; \
+ case GL_PREVIOUS_EXT: \
+ param = iteratedAlpha; \
+ break; \
+ default: \
+ /* \
+ * This is here just to keep from getting \
+ * compiler warnings. \
+ */ \
+ param = GR_CMBX_ZERO; \
+ break; \
+ } \
+ }
+
+#define TEXENV_SETUP_MODE_RGB(param, operand) \
+ switch (operand) { \
+ case GL_SRC_COLOR: \
+ case GL_SRC_ALPHA: \
+ param = GR_FUNC_MODE_X; \
+ break; \
+ case GL_ONE_MINUS_SRC_ALPHA: \
+ case GL_ONE_MINUS_SRC_COLOR: \
+ param = GR_FUNC_MODE_ONE_MINUS_X; \
+ break; \
+ default: \
+ param = GR_FUNC_MODE_ZERO; \
+ break; \
+ }
+
+#define TEXENV_SETUP_MODE_A(param, operand) \
+ switch (operand) { \
+ case GL_SRC_ALPHA: \
+ param = GR_FUNC_MODE_X; \
+ break; \
+ case GL_ONE_MINUS_SRC_ALPHA: \
+ param = GR_FUNC_MODE_ONE_MINUS_X; \
+ break; \
+ default: \
+ param = GR_FUNC_MODE_ZERO; \
+ break; \
+ }
+
+static void
+fxSetupTextureEnvNapalm_NoLock(GLcontext * ctx, GLuint textureset, GLuint tmu, GLboolean iterated)
+{
+ fxMesaContext fxMesa = FX_CONTEXT(ctx);
+ const struct gl_texture_unit *texUnit = &ctx->Texture.Unit[textureset];
+ struct tdfx_combine_alpha_ext alphaComb;
+ struct tdfx_combine_color_ext colorComb;
+ GLfloat *envColor = texUnit->EnvColor;
+ GrCombineLocal_t localc, locala; /* fragmentColor/Alpha */
+ GLint ifmt;
+ tfxTexInfo *ti;
+ struct gl_texture_object *tObj = texUnit->Current2D;
+
+ if (TDFX_DEBUG & VERBOSE_DRIVER) {
+ fprintf(stderr, "%s(...)\n", __FUNCTION__);
+ }
+
+ ti = fxTMGetTexInfo(tObj);
+
+ ifmt = ti->baseLevelInternalFormat;
+
+ if (iterated) {
+ /* we don't have upstream TMU */
+ locala = GR_CMBX_ITALPHA;
+ localc = GR_CMBX_ITRGB;
+ } else {
+ /* we have upstream TMU */
+ locala = GR_CMBX_OTHER_TEXTURE_ALPHA;
+ localc = GR_CMBX_OTHER_TEXTURE_RGB;
+ }
+
+ alphaComb.InvertD = FXFALSE;
+ alphaComb.Shift = 0;
+ alphaComb.Invert = FXFALSE;
+ colorComb.InvertD = FXFALSE;
+ colorComb.Shift = 0;
+ colorComb.Invert = FXFALSE;
+
+ switch (texUnit->EnvMode) {
+ case GL_DECAL:
+ alphaComb.SourceA = locala;
+ alphaComb.ModeA = GR_FUNC_MODE_X;
+ alphaComb.SourceB = GR_CMBX_ZERO;
+ alphaComb.ModeB = GR_FUNC_MODE_X;
+ alphaComb.SourceC = GR_CMBX_ZERO;
+ alphaComb.InvertC = FXTRUE;
+ alphaComb.SourceD = GR_CMBX_ZERO;
+
+ colorComb.SourceA = GR_CMBX_LOCAL_TEXTURE_RGB;
+ colorComb.ModeA = GR_FUNC_MODE_X;
+ colorComb.SourceB = localc;
+ colorComb.ModeB = GR_FUNC_MODE_NEGATIVE_X;
+ colorComb.SourceC = GR_CMBX_LOCAL_TEXTURE_ALPHA;
+ colorComb.InvertC = FXFALSE;
+ colorComb.SourceD = GR_CMBX_B;
+ break;
+ case GL_MODULATE:
+ if (ifmt == GL_LUMINANCE || ifmt == GL_RGB) {
+ alphaComb.SourceA = locala;
+ alphaComb.ModeA = GR_FUNC_MODE_X;
+ alphaComb.SourceB = GR_CMBX_ZERO;
+ alphaComb.ModeB = GR_FUNC_MODE_X;
+ alphaComb.SourceC = GR_CMBX_ZERO;
+ alphaComb.InvertC = FXTRUE;
+ alphaComb.SourceD = GR_CMBX_ZERO;
+ } else {
+ alphaComb.SourceA = locala;
+ alphaComb.ModeA = GR_FUNC_MODE_X;
+ alphaComb.SourceB = GR_CMBX_ZERO;
+ alphaComb.ModeB = GR_FUNC_MODE_X;
+ alphaComb.SourceC = GR_CMBX_LOCAL_TEXTURE_ALPHA;
+ alphaComb.InvertC = FXFALSE;
+ alphaComb.SourceD = GR_CMBX_ZERO;
+ }
+
+ if (ifmt == GL_ALPHA) {
+ colorComb.SourceA = localc;
+ colorComb.ModeA = GR_FUNC_MODE_X;
+ colorComb.SourceB = GR_CMBX_ZERO;
+ colorComb.ModeB = GR_FUNC_MODE_X;
+ colorComb.SourceC = GR_CMBX_ZERO;
+ colorComb.InvertC = FXTRUE;
+ colorComb.SourceD = GR_CMBX_ZERO;
+ } else {
+ colorComb.SourceA = localc;
+ colorComb.ModeA = GR_FUNC_MODE_X;
+ colorComb.SourceB = GR_CMBX_ZERO;
+ colorComb.ModeB = GR_FUNC_MODE_X;
+ colorComb.SourceC = GR_CMBX_LOCAL_TEXTURE_RGB;
+ colorComb.InvertC = FXFALSE;
+ colorComb.SourceD = GR_CMBX_ZERO;
+ }
+ break;
+ case GL_BLEND:
+ if (ifmt == GL_INTENSITY) {
+ alphaComb.SourceA = GR_CMBX_TMU_CALPHA;
+ alphaComb.ModeA = GR_FUNC_MODE_X;
+ alphaComb.SourceB = locala;
+ alphaComb.ModeB = GR_FUNC_MODE_X;
+ alphaComb.SourceC = GR_CMBX_LOCAL_TEXTURE_ALPHA;
+ alphaComb.InvertC = FXFALSE;
+ alphaComb.SourceD = GR_CMBX_ZERO;
+ } else {
+ alphaComb.SourceA = locala;
+ alphaComb.ModeA = GR_FUNC_MODE_X;
+ alphaComb.SourceB = GR_CMBX_ZERO;
+ alphaComb.ModeB = GR_FUNC_MODE_X;
+ alphaComb.SourceC = GR_CMBX_LOCAL_TEXTURE_ALPHA;
+ alphaComb.InvertC = FXFALSE;
+ alphaComb.SourceD = GR_CMBX_ZERO;
+ }
+
+ if (ifmt == GL_ALPHA) {
+ colorComb.SourceA = localc;
+ colorComb.ModeA = GR_FUNC_MODE_X;
+ colorComb.SourceB = GR_CMBX_ZERO;
+ colorComb.ModeB = GR_FUNC_MODE_X;
+ colorComb.SourceC = GR_CMBX_ZERO;
+ colorComb.InvertC = FXTRUE;
+ colorComb.SourceD = GR_CMBX_ZERO;
+ } else {
+ colorComb.SourceA = GR_CMBX_TMU_CCOLOR;
+ colorComb.ModeA = GR_FUNC_MODE_X;
+ colorComb.SourceB = localc;
+ colorComb.ModeB = GR_FUNC_MODE_NEGATIVE_X;
+ colorComb.SourceC = GR_CMBX_LOCAL_TEXTURE_RGB;
+ colorComb.InvertC = FXFALSE;
+ colorComb.SourceD = GR_CMBX_B;
+ }
+
+ fxMesa->Glide.grConstantColorValueExt(tmu,
+ ((GLuint)((envColor[0] * 255.0f)) ) |
+ ((GLuint)((envColor[1] * 255.0f)) << 8) |
+ ((GLuint)((envColor[2] * 255.0f)) << 16) |
+ ((GLuint)((envColor[3] * 255.0f)) << 24));
+ break;
+ case GL_REPLACE:
+ if (ifmt == GL_LUMINANCE || ifmt == GL_RGB) {
+ alphaComb.SourceA = locala;
+ alphaComb.ModeA = GR_FUNC_MODE_X;
+ alphaComb.SourceB = GR_CMBX_ZERO;
+ alphaComb.ModeB = GR_FUNC_MODE_X;
+ alphaComb.SourceC = GR_CMBX_ZERO;
+ alphaComb.InvertC = FXTRUE;
+ alphaComb.SourceD = GR_CMBX_ZERO;
+ } else {
+ alphaComb.SourceA = GR_CMBX_LOCAL_TEXTURE_ALPHA;
+ alphaComb.ModeA = GR_FUNC_MODE_X;
+ alphaComb.SourceB = GR_CMBX_ZERO;
+ alphaComb.ModeB = GR_FUNC_MODE_X;
+ alphaComb.SourceC = GR_CMBX_ZERO;
+ alphaComb.InvertC = FXTRUE;
+ alphaComb.SourceD = GR_CMBX_ZERO;
+ }
+
+ if (ifmt == GL_ALPHA) {
+ colorComb.SourceA = localc;
+ colorComb.ModeA = GR_FUNC_MODE_X;
+ colorComb.SourceB = GR_CMBX_ZERO;
+ colorComb.ModeB = GR_FUNC_MODE_X;
+ colorComb.SourceC = GR_CMBX_ZERO;
+ colorComb.InvertC = FXTRUE;
+ colorComb.SourceD = GR_CMBX_ZERO;
+ } else {
+ colorComb.SourceA = GR_CMBX_LOCAL_TEXTURE_RGB;
+ colorComb.ModeA = GR_FUNC_MODE_X;
+ colorComb.SourceB = GR_CMBX_ZERO;
+ colorComb.ModeB = GR_FUNC_MODE_X;
+ colorComb.SourceC = GR_CMBX_ZERO;
+ colorComb.InvertC = FXTRUE;
+ colorComb.SourceD = GR_CMBX_ZERO;
+ }
+ break;
+ case GL_ADD:
+ if (ifmt == GL_LUMINANCE || ifmt == GL_RGB) {
+ alphaComb.SourceA = locala;
+ alphaComb.ModeA = GR_FUNC_MODE_X;
+ alphaComb.SourceB = GR_CMBX_ZERO;
+ alphaComb.ModeB = GR_FUNC_MODE_X;
+ alphaComb.SourceC = GR_CMBX_ZERO;
+ alphaComb.InvertC = FXTRUE;
+ alphaComb.SourceD = GR_CMBX_ZERO;
+ } else if (ifmt == GL_INTENSITY) {
+ alphaComb.SourceA = locala;
+ alphaComb.ModeA = GR_FUNC_MODE_X;
+ alphaComb.SourceB = GR_CMBX_LOCAL_TEXTURE_ALPHA;
+ alphaComb.ModeB = GR_FUNC_MODE_X;
+ alphaComb.SourceC = GR_CMBX_ZERO;
+ alphaComb.InvertC = FXTRUE;
+ alphaComb.SourceD = GR_CMBX_ZERO;
+ } else {
+ alphaComb.SourceA = locala;
+ alphaComb.ModeA = GR_FUNC_MODE_X;
+ alphaComb.SourceB = GR_CMBX_ZERO;
+ alphaComb.ModeB = GR_FUNC_MODE_X;
+ alphaComb.SourceC = GR_CMBX_LOCAL_TEXTURE_ALPHA;
+ alphaComb.InvertC = FXFALSE;
+ alphaComb.SourceD = GR_CMBX_ZERO;
+ }
+
+ if (ifmt == GL_ALPHA) {
+ colorComb.SourceA = localc;
+ colorComb.ModeA = GR_FUNC_MODE_X;
+ colorComb.SourceB = GR_CMBX_ZERO;
+ colorComb.ModeB = GR_FUNC_MODE_X;
+ colorComb.SourceC = GR_CMBX_ZERO;
+ colorComb.InvertC = FXTRUE;
+ colorComb.SourceD = GR_CMBX_ZERO;
+ } else {
+ colorComb.SourceA = localc;
+ colorComb.ModeA = GR_FUNC_MODE_X;
+ colorComb.SourceB = GR_CMBX_LOCAL_TEXTURE_RGB;
+ colorComb.ModeB = GR_FUNC_MODE_X;
+ colorComb.SourceC = GR_CMBX_ZERO;
+ colorComb.InvertC = FXTRUE;
+ colorComb.SourceD = GR_CMBX_ZERO;
+ }
+ break;
+ /* COMBINE_EXT */
+ case GL_COMBINE_EXT:
+ if (TDFX_DEBUG & (VERBOSE_DRIVER | VERBOSE_TEXTURE)) {
+ fprintf(stderr, "COMBINE_EXT: %s + %s\n",
+ _mesa_lookup_enum_by_nr(texUnit->CombineModeRGB),
+ _mesa_lookup_enum_by_nr(texUnit->CombineModeA));
+ }
+
+ alphaComb.Shift = texUnit->CombineScaleShiftA;
+ colorComb.Shift = texUnit->CombineScaleShiftRGB;
+
+ switch (texUnit->CombineModeRGB) {
+ case GL_MODULATE:
+ /* Arg0 * Arg1 == (A + 0) * C + 0 */
+ TEXENV_SETUP_ARG_RGB(colorComb.SourceA,
+ texUnit->CombineSourceRGB[0],
+ texUnit->CombineOperandRGB[0],
+ localc, locala);
+ TEXENV_SETUP_MODE_RGB(colorComb.ModeA,
+ texUnit->CombineOperandRGB[0]);
+ colorComb.SourceB = GR_CMBX_ZERO;
+ colorComb.ModeB = GR_FUNC_MODE_ZERO;
+ TEXENV_SETUP_ARG_RGB(colorComb.SourceC,
+ texUnit->CombineSourceRGB[1],
+ texUnit->CombineOperandRGB[1],
+ localc, locala);
+ colorComb.InvertC = TEXENV_OPERAND_INVERTED(
+ texUnit->CombineOperandRGB[1]);
+ colorComb.SourceD = GR_CMBX_ZERO;
+ break;
+ default:
+ fprintf(stderr, "COMBINE_EXT_color: %s\n",
+ _mesa_lookup_enum_by_nr(texUnit->CombineModeRGB));
+ }
+
+ switch (texUnit->CombineModeA) {
+ case GL_MODULATE:
+ /* Arg0 * Arg1 == (A + 0) * C + 0 */
+ TEXENV_SETUP_ARG_A(alphaComb.SourceA,
+ texUnit->CombineSourceA[0],
+ texUnit->CombineOperandA[0],
+ locala);
+ TEXENV_SETUP_MODE_A(alphaComb.ModeA,
+ texUnit->CombineOperandA[0]);
+ alphaComb.SourceB = GR_CMBX_ZERO;
+ alphaComb.ModeB = GR_FUNC_MODE_ZERO;
+ TEXENV_SETUP_ARG_A(alphaComb.SourceC,
+ texUnit->CombineSourceA[1],
+ texUnit->CombineOperandA[1],
+ locala);
+ alphaComb.InvertC = TEXENV_OPERAND_INVERTED(
+ texUnit->CombineOperandA[1]);
+ alphaComb.SourceD = GR_CMBX_ZERO;
+ break;
+ default:
+ fprintf(stderr, "COMBINE_EXT_alpha: %s\n",
+ _mesa_lookup_enum_by_nr(texUnit->CombineModeA));
+ }
+
+ fxMesa->Glide.grConstantColorValueExt(tmu,
+ ((GLuint)((envColor[0] * 255.0f)) ) |
+ ((GLuint)((envColor[1] * 255.0f)) << 8) |
+ ((GLuint)((envColor[2] * 255.0f)) << 16) |
+ ((GLuint)((envColor[3] * 255.0f)) << 24));
+ break;
+#if 0
+ {
+ FxU32 A_RGB, B_RGB, C_RGB, D_RGB;
+ FxU32 Amode_RGB, Bmode_RGB;
+ FxBool Cinv_RGB, Dinv_RGB, Ginv_RGB;
+ FxU32 Shift_RGB;
+ FxU32 A_A, B_A, C_A, D_A;
+ FxU32 Amode_A, Bmode_A;
+ FxBool Cinv_A, Dinv_A, Ginv_A;
+ FxU32 Shift_A;
+
+ /*
+ *
+ * In the formulas below, we write:
+ * o "1(x)" for the identity function applied to x,
+ * so 1(x) = x.
+ * o "0(x)" for the constant function 0, so
+ * 0(x) = 0 for all values of x.
+ *
+ * Calculate the color combination.
+ */
+ Shift_RGB = texUnit->CombineScaleShiftRGB;
+ Shift_A = texUnit->CombineScaleShiftA;
+ switch (texUnit->CombineModeRGB) {
+ case GL_REPLACE:
+ /*
+ * The formula is: Arg0
+ * We implement this by the formula:
+ * (Arg0 + 0(0))*(1-0) + 0
+ */
+ TEXENV_SETUP_ARG_RGB(A_RGB,
+ texUnit->CombineSourceRGB[0],
+ texUnit->CombineOperandRGB[0],
+ incomingRGB, incomingAlpha);
+ TEXENV_SETUP_MODE_RGB(Amode_RGB,
+ texUnit->CombineOperandRGB[0]);
+ B_RGB = C_RGB = D_RGB = GR_CMBX_ZERO;
+ Bmode_RGB = GR_FUNC_MODE_ZERO;
+ Cinv_RGB = FXTRUE;
+ Dinv_RGB = Ginv_RGB = FXFALSE;
+ break;
+ case GL_MODULATE:
+ /*
+ * The formula is: Arg0 * Arg1
+ *
+ * We implement this by the formula
+ * (Arg0 + 0(0)) * Arg1 + 0(0)
+ */
+ TEXENV_SETUP_ARG_RGB(A_RGB,
+ texUnit->CombineSourceRGB[0],
+ texUnit->CombineOperandRGB[0],
+ incomingRGB, incomingAlpha);
+ TEXENV_SETUP_MODE_RGB(Amode_RGB,
+ texUnit->CombineOperandRGB[0]);
+ B_RGB = GR_CMBX_ZERO;
+ Bmode_RGB = GR_CMBX_ZERO;
+ TEXENV_SETUP_ARG_RGB(C_RGB,
+ texUnit->CombineSourceRGB[1],
+ texUnit->CombineOperandRGB[1],
+ incomingRGB, incomingAlpha);
+ Cinv_RGB = TEXENV_OPERAND_INVERTED
+ (texUnit->CombineOperandRGB[1]);
+ D_RGB = GR_CMBX_ZERO;
+ Dinv_RGB = Ginv_RGB = FXFALSE;
+ break;
+ case GL_ADD:
+ /*
+ * The formula is Arg0 + Arg1
+ */
+ TEXENV_SETUP_ARG_RGB(A_RGB,
+ texUnit->CombineSourceRGB[0],
+ texUnit->CombineOperandRGB[0],
+ incomingRGB, incomingAlpha);
+ TEXENV_SETUP_MODE_RGB(Amode_RGB,
+ texUnit->CombineOperandRGB[0]);
+ TEXENV_SETUP_ARG_RGB(B_RGB,
+ texUnit->CombineSourceRGB[1],
+ texUnit->CombineOperandRGB[1],
+ incomingRGB, incomingAlpha);
+ TEXENV_SETUP_MODE_RGB(Bmode_RGB,
+ texUnit->CombineOperandRGB[1]);
+ C_RGB = D_RGB = GR_CMBX_ZERO;
+ Cinv_RGB = FXTRUE;
+ Dinv_RGB = Ginv_RGB = FXFALSE;
+ break;
+ case GL_ADD_SIGNED_EXT:
+ /*
+ * The formula is: Arg0 + Arg1 - 0.5.
+ * We compute this by calculating:
+ * (Arg0 - 1/2) + Arg1 if op0 is SRC_{COLOR,ALPHA}
+ * Arg0 + (Arg1 - 1/2) if op1 is SRC_{COLOR,ALPHA}
+ * If both op0 and op1 are ONE_MINUS_SRC_{COLOR,ALPHA}
+ * we cannot implement the formula properly.
+ */
+ TEXENV_SETUP_ARG_RGB(A_RGB,
+ texUnit->CombineSourceRGB[0],
+ texUnit->CombineOperandRGB[0],
+ incomingRGB, incomingAlpha);
+ TEXENV_SETUP_ARG_RGB(B_RGB,
+ texUnit->CombineSourceRGB[1],
+ texUnit->CombineOperandRGB[1],
+ incomingRGB, incomingAlpha);
+ if (!TEXENV_OPERAND_INVERTED(texUnit->CombineOperandRGB[0])) {
+ /*
+ * A is not inverted. So, choose it.
+ */
+ Amode_RGB = GR_FUNC_MODE_X_MINUS_HALF;
+ if (!TEXENV_OPERAND_INVERTED
+ (texUnit->CombineOperandRGB[1])) {
+ Bmode_RGB = GR_FUNC_MODE_X;
+ }
+ else {
+ Bmode_RGB = GR_FUNC_MODE_ONE_MINUS_X;
+ }
+ }
+ else {
+ /*
+ * A is inverted, so try to subtract 1/2
+ * from B.
+ */
+ Amode_RGB = GR_FUNC_MODE_ONE_MINUS_X;
+ if (!TEXENV_OPERAND_INVERTED
+ (texUnit->CombineOperandRGB[1])) {
+ Bmode_RGB = GR_FUNC_MODE_X_MINUS_HALF;
+ }
+ else {
+ /*
+ * Both are inverted. This is the case
+ * we cannot handle properly. We just
+ * choose to not add the - 1/2.
+ */
+ Bmode_RGB = GR_FUNC_MODE_ONE_MINUS_X;
+ return GL_FALSE;
+ }
+ }
+ C_RGB = D_RGB = GR_CMBX_ZERO;
+ Cinv_RGB = FXTRUE;
+ Dinv_RGB = Ginv_RGB = FXFALSE;
+ break;
+ case GL_INTERPOLATE_EXT:
+ /*
+ * The formula is: Arg0 * Arg2 + Arg1 * (1 - Arg2).
+ * We compute this by the formula:
+ * (Arg0 - Arg1) * Arg2 + Arg1
+ * == Arg0 * Arg2 - Arg1 * Arg2 + Arg1
+ * == Arg0 * Arg2 + Arg1 * (1 - Arg2)
+ * However, if both Arg1 is ONE_MINUS_X, the HW does
+ * not support it properly.
+ */
+ TEXENV_SETUP_ARG_RGB(A_RGB,
+ texUnit->CombineSourceRGB[0],
+ texUnit->CombineOperandRGB[0],
+ incomingRGB, incomingAlpha);
+ TEXENV_SETUP_MODE_RGB(Amode_RGB,
+ texUnit->CombineOperandRGB[0]);
+ TEXENV_SETUP_ARG_RGB(B_RGB,
+ texUnit->CombineSourceRGB[1],
+ texUnit->CombineOperandRGB[1],
+ incomingRGB, incomingAlpha);
+ if (TEXENV_OPERAND_INVERTED(texUnit->CombineOperandRGB[1])) {
+ /*
+ * This case is wrong.
+ */
+ Bmode_RGB = GR_FUNC_MODE_NEGATIVE_X;
+ return GL_FALSE;
+ }
+ else {
+ Bmode_RGB = GR_FUNC_MODE_NEGATIVE_X;
+ }
+ /*
+ * The Source/Operand for the C value must
+ * specify some kind of alpha value.
+ */
+ TEXENV_SETUP_ARG_A(C_RGB,
+ texUnit->CombineSourceRGB[2],
+ texUnit->CombineOperandRGB[2],
+ incomingAlpha);
+ Cinv_RGB = FXFALSE;
+ D_RGB = GR_CMBX_B;
+ Dinv_RGB = Ginv_RGB = FXFALSE;
+ break;
+ default:
+ /*
+ * This is here mostly to keep from getting
+ * a compiler warning about these not being set.
+ * However, this should set all the texture values
+ * to zero.
+ */
+ A_RGB = B_RGB = C_RGB = D_RGB = GR_CMBX_ZERO;
+ Amode_RGB = Bmode_RGB = GR_FUNC_MODE_X;
+ Cinv_RGB = Dinv_RGB = Ginv_RGB = FXFALSE;
+ break;
+ }
+ /*
+ * Calculate the alpha combination.
+ */
+ switch (texUnit->CombineModeA) {
+ case GL_REPLACE:
+ /*
+ * The formula is: Arg0
+ * We implement this by the formula:
+ * (Arg0 + 0(0))*(1-0) + 0
+ */
+ TEXENV_SETUP_ARG_A(A_A,
+ texUnit->CombineSourceA[0],
+ texUnit->CombineOperandA[0],
+ incomingAlpha);
+ TEXENV_SETUP_MODE_A(Amode_A,
+ texUnit->CombineOperandA[0]);
+ B_A = GR_CMBX_ITALPHA;
+ Bmode_A = GR_FUNC_MODE_ZERO;
+ C_A = D_A = GR_CMBX_ZERO;
+ Cinv_A = FXTRUE;
+ Dinv_A = Ginv_A = FXFALSE;
+ break;
+ case GL_MODULATE:
+ /*
+ * The formula is: Arg0 * Arg1
+ *
+ * We implement this by the formula
+ * (Arg0 + 0(0)) * Arg1 + 0(0)
+ */
+ TEXENV_SETUP_ARG_A(A_A,
+ texUnit->CombineSourceA[0],
+ texUnit->CombineOperandA[0],
+ incomingAlpha);
+ TEXENV_SETUP_MODE_A(Amode_A,
+ texUnit->CombineOperandA[0]);
+ B_A = GR_CMBX_ZERO;
+ Bmode_A = GR_CMBX_ZERO;
+ TEXENV_SETUP_ARG_A(C_A,
+ texUnit->CombineSourceA[1],
+ texUnit->CombineOperandA[1],
+ incomingAlpha);
+ Cinv_A = TEXENV_OPERAND_INVERTED
+ (texUnit->CombineOperandA[1]);
+ D_A = GR_CMBX_ZERO;
+ Dinv_A = Ginv_A = FXFALSE;
+ break;
+ case GL_ADD:
+ /*
+ * The formula is Arg0 + Arg1
+ */
+ TEXENV_SETUP_ARG_A(A_A,
+ texUnit->CombineSourceA[0],
+ texUnit->CombineOperandA[0],
+ incomingAlpha);
+ TEXENV_SETUP_MODE_A(Amode_A,
+ texUnit->CombineOperandA[0]);
+ TEXENV_SETUP_ARG_A(B_A,
+ texUnit->CombineSourceA[1],
+ texUnit->CombineOperandA[1],
+ incomingAlpha);
+ TEXENV_SETUP_MODE_A(Bmode_A,
+ texUnit->CombineOperandA[1]);
+ C_A = D_A = GR_CMBX_ZERO;
+ Cinv_A = FXTRUE;
+ Dinv_A = Ginv_A = FXFALSE;
+ break;
+ case GL_ADD_SIGNED_EXT:
+ /*
+ * The formula is: Arg0 + Arg1 - 0.5.
+ * We compute this by calculating:
+ * (Arg0 - 1/2) + Arg1 if op0 is SRC_{COLOR,ALPHA}
+ * Arg0 + (Arg1 - 1/2) if op1 is SRC_{COLOR,ALPHA}
+ * If both op0 and op1 are ONE_MINUS_SRC_{COLOR,ALPHA}
+ * we cannot implement the formula properly.
+ */
+ TEXENV_SETUP_ARG_A(A_A,
+ texUnit->CombineSourceA[0],
+ texUnit->CombineOperandA[0],
+ incomingAlpha);
+ TEXENV_SETUP_ARG_A(B_A,
+ texUnit->CombineSourceA[1],
+ texUnit->CombineOperandA[1],
+ incomingAlpha);
+ if (!TEXENV_OPERAND_INVERTED(texUnit->CombineOperandA[0])) {
+ /*
+ * A is not inverted. So, choose it.
+ */
+ Amode_A = GR_FUNC_MODE_X_MINUS_HALF;
+ if (!TEXENV_OPERAND_INVERTED
+ (texUnit->CombineOperandA[1])) {
+ Bmode_A = GR_FUNC_MODE_X;
+ } else {
+ Bmode_A = GR_FUNC_MODE_ONE_MINUS_X;
+ }
+ } else {
+ /*
+ * A is inverted, so try to subtract 1/2
+ * from B.
+ */
+ Amode_A = GR_FUNC_MODE_ONE_MINUS_X;
+ if (!TEXENV_OPERAND_INVERTED
+ (texUnit->CombineOperandA[1])) {
+ Bmode_A = GR_FUNC_MODE_X_MINUS_HALF;
+ } else {
+ /*
+ * Both are inverted. This is the case
+ * we cannot handle properly. We just
+ * choose to not add the - 1/2.
+ */
+ Bmode_A = GR_FUNC_MODE_ONE_MINUS_X;
+ return GL_FALSE;
+ }
+ }
+ C_A = D_A = GR_CMBX_ZERO;
+ Cinv_A = FXTRUE;
+ Dinv_A = Ginv_A = FXFALSE;
+ break;
+ case GL_INTERPOLATE_EXT:
+ /*
+ * The formula is: Arg0 * Arg2 + Arg1 * (1 - Arg2).
+ * We compute this by the formula:
+ * (Arg0 - Arg1) * Arg2 + Arg1
+ * == Arg0 * Arg2 - Arg1 * Arg2 + Arg1
+ * == Arg0 * Arg2 + Arg1 * (1 - Arg2)
+ * However, if both Arg1 is ONE_MINUS_X, the HW does
+ * not support it properly.
+ */
+ TEXENV_SETUP_ARG_A(A_A,
+ texUnit->CombineSourceA[0],
+ texUnit->CombineOperandA[0],
+ incomingAlpha);
+ TEXENV_SETUP_MODE_A(Amode_A,
+ texUnit->CombineOperandA[0]);
+ TEXENV_SETUP_ARG_A(B_A,
+ texUnit->CombineSourceA[1],
+ texUnit->CombineOperandA[1],
+ incomingAlpha);
+ if (!TEXENV_OPERAND_INVERTED(texUnit->CombineOperandA[1])) {
+ Bmode_A = GR_FUNC_MODE_NEGATIVE_X;
+ }
+ else {
+ /*
+ * This case is wrong.
+ */
+ Bmode_A = GR_FUNC_MODE_NEGATIVE_X;
+ return GL_FALSE;
+ }
+ /*
+ * The Source/Operand for the C value must
+ * specify some kind of alpha value.
+ */
+ TEXENV_SETUP_ARG_A(C_A,
+ texUnit->CombineSourceA[2],
+ texUnit->CombineOperandA[2],
+ incomingAlpha);
+ Cinv_A = FXFALSE;
+ D_A = GR_CMBX_B;
+ Dinv_A = Ginv_A = FXFALSE;
+ break;
+ default:
+ /*
+ * This is here mostly to keep from getting
+ * a compiler warning about these not being set.
+ * However, this should set all the alpha values
+ * to one.
+ */
+ A_A = B_A = C_A = D_A = GR_CMBX_ZERO;
+ Amode_A = Bmode_A = GR_FUNC_MODE_X;
+ Cinv_A = Dinv_A = FXFALSE;
+ Ginv_A = FXTRUE;
+ break;
+ }
+ /*
+ * Save the parameters.
+ */
+ env->Color.SourceA = A_RGB;
+ env->Color.ModeA = Amode_RGB;
+ env->Color.SourceB = B_RGB;
+ env->Color.ModeB = Bmode_RGB;
+ env->Color.SourceC = C_RGB;
+ env->Color.InvertC = Cinv_RGB;
+ env->Color.SourceD = D_RGB;
+ env->Color.InvertD = Dinv_RGB;
+ env->Color.Shift = Shift_RGB;
+ env->Color.Invert = Ginv_RGB;
+ env->Alpha.SourceA = A_A;
+ env->Alpha.ModeA = Amode_A;
+ env->Alpha.SourceB = B_A;
+ env->Alpha.ModeB = Bmode_A;
+ env->Alpha.SourceC = C_A;
+ env->Alpha.InvertC = Cinv_A;
+ env->Alpha.SourceD = D_A;
+ env->Alpha.InvertD = Dinv_A;
+ env->Alpha.Shift = Shift_A;
+ env->Alpha.Invert = Ginv_A;
+ env->EnvColor = PACK_RGBA32(texUnit->EnvColor[0] * 255.0F,
+ texUnit->EnvColor[1] * 255.0F,
+ texUnit->EnvColor[2] * 255.0F,
+ texUnit->EnvColor[3] * 255.0F);
+ }
+ break;
+#endif
+ default:
+ if (TDFX_DEBUG & VERBOSE_DRIVER) {
+ fprintf(stderr, "%s: %x Texture.EnvMode not yet supported\n", __FUNCTION__,
+ texUnit->EnvMode);
+ }
+ return;
+ }
+
+ /* On Napalm we simply put the color combine unit into passthrough mode
+ * and do everything we need with the texture combine units. */
+ fxMesa->Glide.grColorCombineExt(GR_CMBX_TEXTURE_RGB,
+ GR_FUNC_MODE_X,
+ GR_CMBX_ZERO,
+ GR_FUNC_MODE_X,
+ GR_CMBX_ZERO,
+ FXTRUE,
+ GR_CMBX_ZERO,
+ FXFALSE,
+ 0,
+ FXFALSE);
+ fxMesa->Glide.grAlphaCombineExt(GR_CMBX_TEXTURE_ALPHA,
+ GR_FUNC_MODE_X,
+ GR_CMBX_ZERO,
+ GR_FUNC_MODE_X,
+ GR_CMBX_ZERO,
+ FXTRUE,
+ GR_CMBX_ZERO,
+ FXFALSE,
+ 0,
+ FXFALSE);
+
+ fxMesa->Glide.grTexAlphaCombineExt(tmu,
+ alphaComb.SourceA,
+ alphaComb.ModeA,
+ alphaComb.SourceB,
+ alphaComb.ModeB,
+ alphaComb.SourceC,
+ alphaComb.InvertC,
+ alphaComb.SourceD,
+ alphaComb.InvertD,
+ alphaComb.Shift,
+ alphaComb.Invert);
+ fxMesa->Glide.grTexColorCombineExt(tmu,
+ colorComb.SourceA,
+ colorComb.ModeA,
+ colorComb.SourceB,
+ colorComb.ModeB,
+ colorComb.SourceC,
+ colorComb.InvertC,
+ colorComb.SourceD,
+ colorComb.InvertD,
+ colorComb.Shift,
+ colorComb.Invert);
+}
+
+
+/************************* Single Texture Set ***************************/
+
+static void
+fxSelectSingleTMUSrcNapalm_NoLock(fxMesaContext fxMesa, GLint tmu, FxBool LODblend)
+{
+ if (TDFX_DEBUG & VERBOSE_DRIVER) {
+ fprintf(stderr, "%s(%d, %d)\n", __FUNCTION__, tmu, LODblend);
+ }
+
+ if (LODblend) {
+ /* [dBorca] Hack alert:
+ * TODO: GR_CMBX_LOD_FRAC
+ */
+
+ fxMesa->tmuSrc = FX_TMU_SPLIT;
+ }
+ else {
+ if (tmu != FX_TMU1) {
+ /* disable tex1 */
+ if (fxMesa->haveTwoTMUs) {
+ fxMesa->Glide.grTexAlphaCombineExt(FX_TMU1,
+ GR_CMBX_ZERO,
+ GR_FUNC_MODE_ZERO,
+ GR_CMBX_ZERO,
+ GR_FUNC_MODE_ZERO,
+ GR_CMBX_ZERO,
+ FXTRUE,
+ GR_CMBX_ZERO,
+ FXFALSE,
+ 0,
+ FXFALSE);
+ fxMesa->Glide.grTexColorCombineExt(FX_TMU1,
+ GR_CMBX_ZERO,
+ GR_FUNC_MODE_ZERO,
+ GR_CMBX_ZERO,
+ GR_FUNC_MODE_ZERO,
+ GR_CMBX_ZERO,
+ FXTRUE,
+ GR_CMBX_ZERO,
+ FXFALSE,
+ 0,
+ FXFALSE);
+ }
+
+ fxMesa->tmuSrc = FX_TMU0;
+ }
+ else {
+ grTexCombine(GR_TMU0,
+ GR_COMBINE_FUNCTION_BLEND,
+ GR_COMBINE_FACTOR_ONE,
+ GR_COMBINE_FUNCTION_BLEND,
+ GR_COMBINE_FACTOR_ONE,
+ FXFALSE,
+ FXFALSE);
+ /*
+ fxMesa->Glide.grTexAlphaCombineExt(FX_TMU0,
+ GR_CMBX_OTHER_TEXTURE_ALPHA,
+ GR_FUNC_MODE_X,
+ GR_CMBX_ZERO,
+ GR_FUNC_MODE_X,
+ GR_CMBX_ZERO,
+ FXTRUE,
+ GR_CMBX_ZERO,
+ FXFALSE,
+ 0,
+ FXFALSE);
+ fxMesa->Glide.grTexColorCombineExt(FX_TMU0,
+ GR_CMBX_OTHER_TEXTURE_RGB,
+ GR_FUNC_MODE_X,
+ GR_CMBX_ZERO,
+ GR_FUNC_MODE_X,
+ GR_CMBX_ZERO,
+ FXTRUE,
+ GR_CMBX_ZERO,
+ FXFALSE,
+ 0,
+ FXFALSE);
+ */
+
+ fxMesa->tmuSrc = FX_TMU1;
+ }
+ }
+}
+
+static void
+fxSetupTextureSingleTMUNapalm_NoLock(GLcontext * ctx, GLuint textureset)
+{
+ fxMesaContext fxMesa = FX_CONTEXT(ctx);
+ GLuint unitsmode;
+ tfxTexInfo *ti;
+ struct gl_texture_object *tObj = ctx->Texture.Unit[textureset].Current2D;
+ int tmu;
+
+ if (TDFX_DEBUG & VERBOSE_DRIVER) {
+ fprintf(stderr, "%s(%d)\n", __FUNCTION__, textureset);
+ }
+
+ ti = fxTMGetTexInfo(tObj);
+
+ fxTexValidate(ctx, tObj);
+
+ fxSetupSingleTMU_NoLock(fxMesa, tObj);
+
+ if (ti->whichTMU == FX_TMU_BOTH)
+ tmu = FX_TMU0;
+ else
+ tmu = ti->whichTMU;
+ if (fxMesa->tmuSrc != tmu)
+ fxSelectSingleTMUSrcNapalm_NoLock(fxMesa, tmu, ti->LODblend);
+
+ if (textureset == 0 || !fxMesa->haveTwoTMUs)
+ unitsmode = fxGetTexSetConfiguration(ctx, tObj, NULL);
+ else
+ unitsmode = fxGetTexSetConfiguration(ctx, NULL, tObj);
+
+/* if(fxMesa->lastUnitsMode==unitsmode) */
+/* return; */
+
+ fxMesa->lastUnitsMode = unitsmode;
+
+ fxMesa->stw_hint_state = 0;
+ FX_grHints_NoLock(GR_HINT_STWHINT, 0);
+
+ if (TDFX_DEBUG & (VERBOSE_DRIVER | VERBOSE_TEXTURE))
+ fprintf(stderr, "%s: envmode is %s\n", __FUNCTION__,
+ _mesa_lookup_enum_by_nr(ctx->Texture.Unit[textureset].EnvMode));
+
+ /* [dBorca] Hack alert:
+ * what if we're in split mode? (LODBlend)
+ */
+ fxSetupTextureEnvNapalm_NoLock(ctx, textureset, tmu, GL_TRUE);
+}
+
+
+/************************* Double Texture Set ***************************/
+
+static void
+fxSetupTextureDoubleTMUNapalm_NoLock(GLcontext * ctx)
+{
+ fxMesaContext fxMesa = FX_CONTEXT(ctx);
+ tfxTexInfo *ti0, *ti1;
+ struct gl_texture_object *tObj0 = ctx->Texture.Unit[0].Current2D;
+ struct gl_texture_object *tObj1 = ctx->Texture.Unit[1].Current2D;
+ GLuint unitsmode;
+ int tmu0 = 0, tmu1 = 1;
+
+ if (TDFX_DEBUG & VERBOSE_DRIVER) {
+ fprintf(stderr, "%s(...)\n", __FUNCTION__);
+ }
+
+ ti0 = fxTMGetTexInfo(tObj0);
+ fxTexValidate(ctx, tObj0);
+
+ ti1 = fxTMGetTexInfo(tObj1);
+ fxTexValidate(ctx, tObj1);
+
+ fxSetupDoubleTMU_NoLock(fxMesa, tObj0, tObj1);
+
+ unitsmode = fxGetTexSetConfiguration(ctx, tObj0, tObj1);
+
+/* if(fxMesa->lastUnitsMode==unitsmode) */
+/* return; */
+
+ fxMesa->lastUnitsMode = unitsmode;
+
+ fxMesa->stw_hint_state |= GR_STWHINT_ST_DIFF_TMU1;
+ FX_grHints_NoLock(GR_HINT_STWHINT, fxMesa->stw_hint_state);
+
+ if (TDFX_DEBUG & (VERBOSE_DRIVER | VERBOSE_TEXTURE))
+ fprintf(stderr, "%s: envmode is %s/%s\n", __FUNCTION__,
+ _mesa_lookup_enum_by_nr(ctx->Texture.Unit[0].EnvMode),
+ _mesa_lookup_enum_by_nr(ctx->Texture.Unit[1].EnvMode));
+
+
+ if ((ti0->whichTMU == FX_TMU1) || (ti1->whichTMU == FX_TMU0)) {
+ tmu0 = 1;
+ tmu1 = 0;
+ }
+ fxMesa->tmuSrc = FX_TMU_BOTH;
+
+ /* OpenGL vs Glide texture pipeline */
+ /* [dBorca] Hack alert:
+ * TODO: revise this ASAP!!!
+ */
+ fxSetupTextureEnvNapalm_NoLock(ctx, FX_TMU1 - tmu0, tmu0, tmu0 != 0);
+ fxSetupTextureEnvNapalm_NoLock(ctx, FX_TMU1 - tmu1, tmu1, tmu1 != 0);
+}
+
+/************************* No Texture ***************************/
+
+static void
+fxSetupTextureNoneNapalm_NoLock(GLcontext * ctx)
+{
+ fxMesaContext fxMesa = FX_CONTEXT(ctx);
+
+ if (TDFX_DEBUG & VERBOSE_DRIVER) {
+ fprintf(stderr, "%s(...)\n", __FUNCTION__);
+ }
+
+ /* the combiner formula is: (A + B) * C + D
+ **
+ ** a = tc_otherselect
+ ** a_mode = tc_invert_other
+ ** b = tc_localselect
+ ** b_mode = tc_invert_local
+ ** c = (tc_mselect, tc_mselect_7)
+ ** d = (tc_add_clocal, tc_add_alocal)
+ ** shift = tc_outshift
+ ** invert = tc_invert_output
+ */
+
+ fxMesa->Glide.grColorCombineExt(GR_CMBX_ITRGB,
+ GR_FUNC_MODE_X,
+ GR_CMBX_ZERO,
+ GR_FUNC_MODE_ZERO,
+ GR_CMBX_ZERO,
+ FXTRUE,
+ GR_CMBX_ZERO,
+ FXFALSE,
+ 0,
+ FXFALSE);
+ fxMesa->Glide.grAlphaCombineExt(GR_CMBX_ITALPHA,
+ GR_FUNC_MODE_X,
+ GR_CMBX_ZERO,
+ GR_FUNC_MODE_ZERO,
+ GR_CMBX_ZERO,
+ FXTRUE,
+ GR_CMBX_ZERO,
+ FXFALSE,
+ 0,
+ FXFALSE);
+
+ fxMesa->lastUnitsMode = FX_UM_NONE;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-16 14:35:04 +0000