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Diffstat (limited to 'nx-X11/extras/Mesa/src/mesa/drivers/dri/unichrome/via_texcombine.c')
-rw-r--r--nx-X11/extras/Mesa/src/mesa/drivers/dri/unichrome/via_texcombine.c424
1 files changed, 0 insertions, 424 deletions
diff --git a/nx-X11/extras/Mesa/src/mesa/drivers/dri/unichrome/via_texcombine.c b/nx-X11/extras/Mesa/src/mesa/drivers/dri/unichrome/via_texcombine.c
deleted file mode 100644
index d604457bf..000000000
--- a/nx-X11/extras/Mesa/src/mesa/drivers/dri/unichrome/via_texcombine.c
+++ /dev/null
@@ -1,424 +0,0 @@
-/*
- * (C) Copyright IBM Corporation 2004
- * 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
- * on 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
- * IBM AND/OR THEIR 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.
- */
-
-/**
- * \file via_texcombine.c
- * Calculate texture combine hardware state.
- *
- * \author Ian Romanick <idr@us.ibm.com>
- */
-
-#include <stdio.h>
-
-#include "glheader.h"
-#include "context.h"
-#include "macros.h"
-#include "colormac.h"
-#include "enums.h"
-
-#include "via_context.h"
-#include "via_state.h"
-#include "via_tex.h"
-#include "via_3d_reg.h"
-
-
-#define VIA_USE_ALPHA (HC_XTC_Adif - HC_XTC_Dif)
-
-#define INPUT_A_SHIFT 14
-#define INPUT_B_SHIFT 7
-#define INPUT_C_SHIFT 0
-#define INPUT_CBias_SHIFT 14
-
-#define CONST_ONE (HC_XTC_0 | HC_XTC_InvTOPC)
-
-static const unsigned color_operand_modifier[4] = {
- 0,
- HC_XTC_InvTOPC,
- VIA_USE_ALPHA,
- VIA_USE_ALPHA | HC_XTC_InvTOPC,
-};
-
-static const unsigned alpha_operand_modifier[2] = {
- 0, HC_XTA_InvTOPA
-};
-
-static const unsigned bias_alpha_operand_modifier[2] = {
- 0, HC_HTXnTBLAbias_Inv
-};
-
-
-static const unsigned c_shift_table[3] = {
- HC_HTXnTBLCshift_No, HC_HTXnTBLCshift_1, HC_HTXnTBLCshift_2
-};
-
-static const unsigned a_shift_table[3] = {
- HC_HTXnTBLAshift_No, HC_HTXnTBLAshift_1, HC_HTXnTBLAshift_2
-};
-
-
-/**
- * Calculate the hardware state for the specified texture combine mode
- *
- * \bug
- * All forms of DOT3 bumpmapping are completely untested, and are most
- * likely wrong. KW: Looks like it will never be quite right as the
- * hardware seems to experience overflow in color calculation at the
- * 4x shift levels, which need to be programed for DOT3. Maybe newer
- * hardware fixes these issues.
- *
- * \bug
- * KW: needs attention to the case where texunit 1 is enabled but
- * texunit 0 is not.
- */
-GLboolean
-viaTexCombineState( struct via_context *vmesa,
- const struct gl_tex_env_combine_state * combine,
- unsigned unit )
-{
- unsigned color_arg[3];
- unsigned alpha_arg[3];
- unsigned bias_alpha_arg[3];
- unsigned color = HC_HTXnTBLCsat_MASK;
- unsigned alpha = HC_HTXnTBLAsat_MASK;
- unsigned bias = 0;
- unsigned op = 0;
- unsigned a_shift = combine->ScaleShiftA;
- unsigned c_shift = combine->ScaleShiftRGB;
- unsigned i;
- unsigned constant_color[3];
- unsigned ordered_constant_color[4];
- unsigned constant_alpha[3];
- unsigned bias_alpha = 0;
- unsigned abc_alpha = 0;
- const struct gl_texture_unit * texUnit =
- &vmesa->glCtx->Texture.Unit[unit];
- unsigned env_color[4];
-
- /* It seems that the color clamping can be overwhelmed at the 4x
- * scale settings, necessitating this fallback:
- */
- if (c_shift == 2 || a_shift == 2) {
- return GL_FALSE;
- }
-
- CLAMPED_FLOAT_TO_UBYTE(env_color[0], texUnit->EnvColor[0]);
- CLAMPED_FLOAT_TO_UBYTE(env_color[1], texUnit->EnvColor[1]);
- CLAMPED_FLOAT_TO_UBYTE(env_color[2], texUnit->EnvColor[2]);
- CLAMPED_FLOAT_TO_UBYTE(env_color[3], texUnit->EnvColor[3]);
-
- (void) memset( constant_color, 0, sizeof( constant_color ) );
- (void) memset( ordered_constant_color, 0, sizeof( ordered_constant_color ) );
- (void) memset( constant_alpha, 0, sizeof( constant_alpha ) );
-
- for ( i = 0 ; i < combine->_NumArgsRGB ; i++ ) {
- const GLint op = combine->OperandRGB[i] - GL_SRC_COLOR;
-
- switch ( combine->SourceRGB[i] ) {
- case GL_TEXTURE:
- color_arg[i] = HC_XTC_Tex;
- color_arg[i] += color_operand_modifier[op];
- break;
- case GL_CONSTANT:
- color_arg[i] = HC_XTC_HTXnTBLRC;
-
- switch( op ) {
- case 0: /* GL_SRC_COLOR */
- constant_color[i] = ((env_color[0] << 16) |
- (env_color[1] << 8) |
- env_color[2]);
- break;
- case 1: /* GL_ONE_MINUS_SRC_COLOR */
- constant_color[i] = ~((env_color[0] << 16) |
- (env_color[1] << 8) |
- env_color[2]) & 0x00ffffff;
- break;
- case 2: /* GL_SRC_ALPHA */
- constant_color[i] = ((env_color[3] << 16) |
- (env_color[3] << 8) |
- env_color[3]);
- break;
- case 3: /* GL_ONE_MINUS_SRC_ALPHA */
- constant_color[i] = ~((env_color[3] << 16) |
- (env_color[3] << 8) |
- env_color[3]) & 0x00ffffff;
- break;
- }
- break;
- case GL_PRIMARY_COLOR:
- color_arg[i] = HC_XTC_Dif;
- color_arg[i] += color_operand_modifier[op];
- break;
- case GL_PREVIOUS:
- color_arg[i] = (unit == 0) ? HC_XTC_Dif : HC_XTC_Cur;
- color_arg[i] += color_operand_modifier[op];
- break;
- }
- }
-
-
- /* On the Unichrome, all combine operations take on some form of:
- *
- * (xA * (xB op xC) + xBias) << xShift
- *
- * 'op' can be selected as add, subtract, min, max, or mask. The min, max
- * and mask modes are currently unused. With the exception of DOT3, all
- * standard GL_COMBINE modes can be implemented simply by selecting the
- * correct inputs for A, B, C, and Bias and the correct operation for op.
- *
- * NOTE: xBias (when read from the constant registers) is signed,
- * and scaled to fit -255..255 in 8 bits, ie 0x1 == 2.
- */
-
- switch( combine->ModeRGB ) {
- /* Ca = 1.0, Cb = arg0, Cc = 0, Cbias = 0
- */
- case GL_REPLACE:
- color |= ((CONST_ONE << INPUT_A_SHIFT) |
- (color_arg[0] << INPUT_B_SHIFT));
-
- ordered_constant_color[1] = constant_color[0];
- break;
-
- /* Ca = arg[0], Cb = arg[1], Cc = 0, Cbias = 0
- */
- case GL_MODULATE:
- color |= ((color_arg[0] << INPUT_A_SHIFT) |
- (color_arg[1] << INPUT_B_SHIFT));
-
- ordered_constant_color[0] = constant_color[0];
- ordered_constant_color[1] = constant_color[1];
- break;
-
- /* Ca = 1.0, Cb = arg[0], Cc = arg[1], Cbias = 0
- */
- case GL_ADD:
- case GL_SUBTRACT:
- if ( combine->ModeRGB == GL_SUBTRACT ) {
- op |= HC_HTXnTBLCop_Sub;
- }
-
- color |= ((CONST_ONE << INPUT_A_SHIFT) |
- (color_arg[0] << INPUT_B_SHIFT) |
- (color_arg[1] << INPUT_C_SHIFT));
-
- ordered_constant_color[1] = constant_color[0];
- ordered_constant_color[2] = constant_color[1];
- break;
-
- /* Ca = 1.0, Cb = arg[0], Cc = arg[1], Cbias = -0.5
- */
- case GL_ADD_SIGNED:
- color |= ((CONST_ONE << INPUT_A_SHIFT) |
- (color_arg[0] << INPUT_B_SHIFT) |
- (color_arg[1] << INPUT_C_SHIFT));
-
- bias |= HC_HTXnTBLCbias_HTXnTBLRC;
-
- ordered_constant_color[1] = constant_color[0];
- ordered_constant_color[2] = constant_color[1];
- ordered_constant_color[3] = 0x00bfbfbf; /* -.5 */
- break;
-
- /* Ca = arg[2], Cb = arg[0], Cc = arg[1], Cbias = arg[1]
- */
- case GL_INTERPOLATE:
- op |= HC_HTXnTBLCop_Sub;
-
- color |= ((color_arg[2] << INPUT_A_SHIFT) |
- (color_arg[0] << INPUT_B_SHIFT) |
- (color_arg[1] << INPUT_C_SHIFT));
-
- bias |= (color_arg[1] << INPUT_CBias_SHIFT);
-
- ordered_constant_color[0] = constant_color[2];
- ordered_constant_color[1] = constant_color[0];
- ordered_constant_color[2] = constant_color[1];
- ordered_constant_color[3] = (constant_color[1] >> 1) & 0x7f7f7f;
- break;
-
-#if 0
- /* At this point this code is completely untested. It appears that the
- * Unichrome has the same limitation as the Radeon R100. The only
- * supported post-scale when doing DOT3 bumpmapping is 1x.
- */
- case GL_DOT3_RGB_EXT:
- case GL_DOT3_RGBA_EXT:
- case GL_DOT3_RGB:
- case GL_DOT3_RGBA:
- c_shift = 2;
- a_shift = 2;
- color |= ((color_arg[0] << INPUT_A_SHIFT) |
- (color_arg[1] << INPUT_B_SHIFT));
- op |= HC_HTXnTBLDOT4;
- break;
-#endif
-
- default:
- assert(0);
- break;
- }
-
-
-
-
- /* The alpha blend stage has the annoying quirk of not having a
- * hard-wired 0 input, like the color stage. As a result, we have
- * to program the constant register with 0 and use that as our
- * 0 input.
- *
- * (xA * (xB op xC) + xBias) << xShift
- *
- */
-
- for ( i = 0 ; i < combine->_NumArgsA ; i++ ) {
- const GLint op = combine->OperandA[i] - GL_SRC_ALPHA;
-
- switch ( combine->SourceA[i] ) {
- case GL_TEXTURE:
- alpha_arg[i] = HC_XTA_Atex;
- alpha_arg[i] += alpha_operand_modifier[op];
- bias_alpha_arg[i] = HC_HTXnTBLAbias_Atex;
- bias_alpha_arg[i] += bias_alpha_operand_modifier[op];
- break;
- case GL_CONSTANT:
- alpha_arg[i] = HC_XTA_HTXnTBLRA;
- bias_alpha_arg[i] = HC_HTXnTBLAbias_HTXnTBLRAbias;
- constant_alpha[i] = (op == 0) ? env_color[3] : (~env_color[3] & 0xff);
- break;
- case GL_PRIMARY_COLOR:
- alpha_arg[i] = HC_XTA_Adif;
- alpha_arg[i] += alpha_operand_modifier[op];
- bias_alpha_arg[i] = HC_HTXnTBLAbias_Adif;
- bias_alpha_arg[i] += bias_alpha_operand_modifier[op];
- break;
- case GL_PREVIOUS:
- alpha_arg[i] = (unit == 0) ? HC_XTA_Adif : HC_XTA_Acur;
- alpha_arg[i] += alpha_operand_modifier[op];
- bias_alpha_arg[i] = (unit == 0 ?
- HC_HTXnTBLAbias_Adif :
- HC_HTXnTBLAbias_Acur);
- bias_alpha_arg[i] += bias_alpha_operand_modifier[op];
- break;
- }
- }
-
- switch( combine->ModeA ) {
- /* Aa = 0, Ab = 0, Ac = 0, Abias = arg0
- */
- case GL_REPLACE:
- alpha |= ((HC_XTA_HTXnTBLRA << INPUT_A_SHIFT) |
- (HC_XTA_HTXnTBLRA << INPUT_B_SHIFT) |
- (HC_XTA_HTXnTBLRA << INPUT_C_SHIFT));
- abc_alpha = 0;
-
- bias |= bias_alpha_arg[0];
- bias_alpha = constant_alpha[0] >> 1;
- break;
-
- /* Aa = arg[0], Ab = arg[1], Ac = 0, Abias = 0
- */
- case GL_MODULATE:
- alpha |= ((alpha_arg[1] << INPUT_A_SHIFT) |
- (alpha_arg[0] << INPUT_B_SHIFT) |
- (HC_XTA_HTXnTBLRA << INPUT_C_SHIFT));
-
- abc_alpha = ((constant_alpha[1] << HC_HTXnTBLRAa_SHIFT) |
- (constant_alpha[0] << HC_HTXnTBLRAb_SHIFT) |
- (0 << HC_HTXnTBLRAc_SHIFT));
-
- bias |= HC_HTXnTBLAbias_HTXnTBLRAbias;
- bias_alpha = 0;
- break;
-
- /* Aa = 1.0, Ab = arg[0], Ac = arg[1], Abias = 0
- */
- case GL_ADD:
- case GL_SUBTRACT:
- if ( combine->ModeA == GL_SUBTRACT ) {
- op |= HC_HTXnTBLAop_Sub;
- }
-
- alpha |= ((HC_XTA_HTXnTBLRA << INPUT_A_SHIFT) |
- (alpha_arg[0] << INPUT_B_SHIFT) |
- (alpha_arg[1] << INPUT_C_SHIFT));
-
- abc_alpha = ((0xff << HC_HTXnTBLRAa_SHIFT) |
- (constant_alpha[0] << HC_HTXnTBLRAb_SHIFT) |
- (constant_alpha[1] << HC_HTXnTBLRAc_SHIFT));
-
- bias |= HC_HTXnTBLAbias_HTXnTBLRAbias;
- bias_alpha = 0;
- break;
-
- /* Aa = 1.0, Ab = arg[0], Ac = arg[1], Abias = -0.5
- */
- case GL_ADD_SIGNED:
- alpha |= ((HC_XTA_HTXnTBLRA << INPUT_A_SHIFT) |
- (alpha_arg[0] << INPUT_B_SHIFT) |
- (alpha_arg[1] << INPUT_C_SHIFT));
- abc_alpha = ((0xff << HC_HTXnTBLRAa_SHIFT) |
- (constant_alpha[0] << HC_HTXnTBLRAb_SHIFT) |
- (constant_alpha[1] << HC_HTXnTBLRAc_SHIFT));
-
- bias |= HC_HTXnTBLAbias_HTXnTBLRAbias;
- bias_alpha = 0xbf;
- break;
-
- /* Aa = arg[2], Ab = arg[0], Ac = arg[1], Abias = arg[1]
- */
- case GL_INTERPOLATE:
- op |= HC_HTXnTBLAop_Sub;
-
- alpha |= ((alpha_arg[2] << INPUT_A_SHIFT) |
- (alpha_arg[0] << INPUT_B_SHIFT) |
- (alpha_arg[1] << INPUT_C_SHIFT));
- abc_alpha = ((constant_alpha[2] << HC_HTXnTBLRAa_SHIFT) |
- (constant_alpha[0] << HC_HTXnTBLRAb_SHIFT) |
- (constant_alpha[1] << HC_HTXnTBLRAc_SHIFT));
-
- bias |= bias_alpha_arg[1];
- bias_alpha = constant_alpha[1] >> 1;
- break;
- }
-
-
- op |= c_shift_table[ c_shift ] | a_shift_table[ a_shift ];
-
-
- vmesa->regHTXnTBLMPfog[unit] = HC_HTXnTBLMPfog_Fog;
-
- vmesa->regHTXnTBLCsat[unit] = color;
- vmesa->regHTXnTBLAsat[unit] = alpha;
- vmesa->regHTXnTBLCop[unit] = op | bias;
- vmesa->regHTXnTBLRAa[unit] = abc_alpha;
- vmesa->regHTXnTBLRFog[unit] = bias_alpha;
-
- vmesa->regHTXnTBLRCa[unit] = ordered_constant_color[0];
- vmesa->regHTXnTBLRCb[unit] = ordered_constant_color[1];
- vmesa->regHTXnTBLRCc[unit] = ordered_constant_color[2];
- vmesa->regHTXnTBLRCbias[unit] = ordered_constant_color[3];
-
- return GL_TRUE;
-}
-
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