1165 lines
30 KiB
C
1165 lines
30 KiB
C
/**************************************************************************
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*
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* Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
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* All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sub license, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial portions
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* of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
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* IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
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* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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**************************************************************************/
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#include "glheader.h"
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#include "macros.h"
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#include "enums.h"
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#include "texenvprogram.h"
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#include "shader/program.h"
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#include "shader/nvfragprog.h"
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#include "shader/arbfragparse.h"
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#define DISASSEM (MESA_VERBOSE & VERBOSE_DISASSEM)
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struct mode_opt {
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unsigned Source:4;
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unsigned Operand:3;
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};
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struct state_key {
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GLuint enabled_units;
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unsigned separate_specular:1;
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unsigned fog_enabled:1;
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unsigned fog_mode:2;
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struct {
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unsigned enabled:1;
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unsigned source_index:3;
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unsigned ScaleShiftRGB:2;
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unsigned ScaleShiftA:2;
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unsigned NumArgsRGB:2;
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unsigned ModeRGB:4;
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struct mode_opt OptRGB[3];
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unsigned NumArgsA:2;
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unsigned ModeA:4;
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struct mode_opt OptA[3];
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} unit[8];
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};
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#define FOG_LINEAR 0
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#define FOG_EXP 1
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#define FOG_EXP2 2
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#define FOG_UNKNOWN 3
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static GLuint translate_fog_mode( GLenum mode )
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{
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switch (mode) {
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case GL_LINEAR: return FOG_LINEAR;
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case GL_EXP: return FOG_EXP;
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case GL_EXP2: return FOG_EXP2;
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default: return FOG_UNKNOWN;
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}
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}
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#define OPR_SRC_COLOR 0
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#define OPR_ONE_MINUS_SRC_COLOR 1
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#define OPR_SRC_ALPHA 2
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#define OPR_ONE_MINUS_SRC_ALPHA 3
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#define OPR_ZERO 4
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#define OPR_ONE 5
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#define OPR_UNKNOWN 7
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static GLuint translate_operand( GLenum operand )
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{
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switch (operand) {
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case GL_SRC_COLOR: return OPR_SRC_COLOR;
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case GL_ONE_MINUS_SRC_COLOR: return OPR_ONE_MINUS_SRC_COLOR;
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case GL_SRC_ALPHA: return OPR_SRC_ALPHA;
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case GL_ONE_MINUS_SRC_ALPHA: return OPR_ONE_MINUS_SRC_ALPHA;
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case GL_ZERO: return OPR_ZERO;
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case GL_ONE: return OPR_ONE;
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default: return OPR_UNKNOWN;
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}
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}
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#define SRC_TEXTURE 0
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#define SRC_TEXTURE0 1
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#define SRC_TEXTURE1 2
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#define SRC_TEXTURE2 3
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#define SRC_TEXTURE3 4
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#define SRC_TEXTURE4 5
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#define SRC_TEXTURE5 6
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#define SRC_TEXTURE6 7
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#define SRC_TEXTURE7 8
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#define SRC_CONSTANT 9
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#define SRC_PRIMARY_COLOR 10
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#define SRC_PREVIOUS 11
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#define SRC_UNKNOWN 15
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static GLuint translate_source( GLenum src )
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{
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switch (src) {
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case GL_TEXTURE: return SRC_TEXTURE;
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case GL_TEXTURE0:
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case GL_TEXTURE1:
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case GL_TEXTURE2:
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case GL_TEXTURE3:
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case GL_TEXTURE4:
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case GL_TEXTURE5:
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case GL_TEXTURE6:
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case GL_TEXTURE7: return SRC_TEXTURE0 + (src - GL_TEXTURE0);
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case GL_CONSTANT: return SRC_CONSTANT;
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case GL_PRIMARY_COLOR: return SRC_PRIMARY_COLOR;
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case GL_PREVIOUS: return SRC_PREVIOUS;
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default: return SRC_UNKNOWN;
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}
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}
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#define MODE_REPLACE 0
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#define MODE_MODULATE 1
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#define MODE_ADD 2
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#define MODE_ADD_SIGNED 3
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#define MODE_INTERPOLATE 4
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#define MODE_SUBTRACT 5
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#define MODE_DOT3_RGB 6
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#define MODE_DOT3_RGB_EXT 7
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#define MODE_DOT3_RGBA 8
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#define MODE_DOT3_RGBA_EXT 9
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#define MODE_MODULATE_ADD_ATI 10
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#define MODE_MODULATE_SIGNED_ADD_ATI 11
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#define MODE_MODULATE_SUBTRACT_ATI 12
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#define MODE_UNKNOWN 15
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static GLuint translate_mode( GLenum mode )
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{
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switch (mode) {
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case GL_REPLACE: return MODE_REPLACE;
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case GL_MODULATE: return MODE_MODULATE;
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case GL_ADD: return MODE_ADD;
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case GL_ADD_SIGNED: return MODE_ADD_SIGNED;
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case GL_INTERPOLATE: return MODE_INTERPOLATE;
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case GL_SUBTRACT: return MODE_SUBTRACT;
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case GL_DOT3_RGB: return MODE_DOT3_RGB;
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case GL_DOT3_RGB_EXT: return MODE_DOT3_RGB_EXT;
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case GL_DOT3_RGBA: return MODE_DOT3_RGBA;
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case GL_DOT3_RGBA_EXT: return MODE_DOT3_RGBA_EXT;
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case GL_MODULATE_ADD_ATI: return MODE_MODULATE_ADD_ATI;
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case GL_MODULATE_SIGNED_ADD_ATI: return MODE_MODULATE_SIGNED_ADD_ATI;
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case GL_MODULATE_SUBTRACT_ATI: return MODE_MODULATE_SUBTRACT_ATI;
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default: return MODE_UNKNOWN;
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}
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}
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#define TEXTURE_UNKNOWN_INDEX 7
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static GLuint translate_tex_src_bit( GLuint bit )
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{
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switch (bit) {
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case TEXTURE_1D_BIT: return TEXTURE_1D_INDEX;
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case TEXTURE_2D_BIT: return TEXTURE_2D_INDEX;
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case TEXTURE_RECT_BIT: return TEXTURE_RECT_INDEX;
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case TEXTURE_3D_BIT: return TEXTURE_3D_INDEX;
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case TEXTURE_CUBE_BIT: return TEXTURE_CUBE_INDEX;
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default: return TEXTURE_UNKNOWN_INDEX;
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}
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}
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static struct state_key *make_state_key( GLcontext *ctx )
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{
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struct state_key *key = CALLOC_STRUCT(state_key);
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GLuint i, j;
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for (i=0;i<MAX_TEXTURE_UNITS;i++) {
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struct gl_texture_unit *texUnit = &ctx->Texture.Unit[i];
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if (!texUnit->_ReallyEnabled)
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continue;
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key->unit[i].enabled = 1;
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key->enabled_units |= (1<<i);
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key->unit[i].source_index =
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translate_tex_src_bit(texUnit->_ReallyEnabled);
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key->unit[i].NumArgsRGB = texUnit->_CurrentCombine->_NumArgsRGB;
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key->unit[i].NumArgsA = texUnit->_CurrentCombine->_NumArgsA;
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key->unit[i].ModeRGB =
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translate_mode(texUnit->_CurrentCombine->ModeRGB);
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key->unit[i].ModeA =
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translate_mode(texUnit->_CurrentCombine->ModeA);
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key->unit[i].ScaleShiftRGB = texUnit->_CurrentCombine->ScaleShiftRGB;
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key->unit[i].ScaleShiftA = texUnit->_CurrentCombine->ScaleShiftRGB;
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for (j=0;j<3;j++) {
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key->unit[i].OptRGB[j].Operand =
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translate_operand(texUnit->_CurrentCombine->OperandRGB[j]);
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key->unit[i].OptA[j].Operand =
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translate_operand(texUnit->_CurrentCombine->OperandA[j]);
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key->unit[i].OptRGB[j].Source =
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translate_source(texUnit->_CurrentCombine->SourceRGB[j]);
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key->unit[i].OptA[j].Source =
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translate_source(texUnit->_CurrentCombine->SourceA[j]);
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}
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}
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if (ctx->_TriangleCaps & DD_SEPARATE_SPECULAR)
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key->separate_specular = 1;
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if (ctx->Fog.Enabled) {
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key->fog_enabled = 1;
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key->fog_mode = translate_fog_mode(ctx->Fog.Mode);
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}
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return key;
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}
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/* Use uregs to represent registers internally, translate to Mesa's
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* expected formats on emit.
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*
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* NOTE: These are passed by value extensively in this file rather
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* than as usual by pointer reference. If this disturbs you, try
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* remembering they are just 32bits in size.
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*
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* GCC is smart enough to deal with these dword-sized structures in
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* much the same way as if I had defined them as dwords and was using
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* macros to access and set the fields. This is much nicer and easier
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* to evolve.
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*/
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struct ureg {
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GLuint file:4;
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GLuint idx:8;
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GLuint negatebase:1;
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GLuint abs:1;
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GLuint negateabs:1;
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GLuint swz:12;
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GLuint pad:5;
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};
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const static struct ureg undef = {
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~0,
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~0,
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0,
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0,
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0,
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0,
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0
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};
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#define X 0
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#define Y 1
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#define Z 2
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#define W 3
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/* State used to build the fragment program:
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*/
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struct texenv_fragment_program {
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struct fragment_program *program;
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GLcontext *ctx;
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struct state_key *state;
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GLuint alu_temps; /* Track texture indirections, see spec. */
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GLuint temps_output; /* Track texture indirections, see spec. */
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GLuint temp_in_use; /* Tracks temporary regs which are in
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* use.
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*/
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GLboolean error;
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struct ureg src_texture[MAX_TEXTURE_UNITS];
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/* Reg containing each texture unit's sampled texture color,
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* else undef.
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*/
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struct ureg src_previous; /* Reg containing color from previous
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* stage. May need to be decl'd.
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*/
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GLuint last_tex_stage; /* Number of last enabled texture unit */
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struct ureg half;
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struct ureg one;
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struct ureg zero;
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};
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static struct ureg make_ureg(GLuint file, GLuint idx)
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{
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struct ureg reg;
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reg.file = file;
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reg.idx = idx;
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reg.negatebase = 0;
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reg.abs = 0;
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reg.negateabs = 0;
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reg.swz = SWIZZLE_NOOP;
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reg.pad = 0;
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return reg;
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}
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static struct ureg swizzle( struct ureg reg, int x, int y, int z, int w )
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{
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reg.swz = MAKE_SWIZZLE4(GET_SWZ(reg.swz, x),
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GET_SWZ(reg.swz, y),
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GET_SWZ(reg.swz, z),
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GET_SWZ(reg.swz, w));
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return reg;
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}
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static struct ureg swizzle1( struct ureg reg, int x )
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{
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return swizzle(reg, x, x, x, x);
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}
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static struct ureg negate( struct ureg reg )
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{
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reg.negatebase ^= 1;
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return reg;
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}
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static GLboolean is_undef( struct ureg reg )
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{
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return reg.file == 0xf;
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}
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static struct ureg get_temp( struct texenv_fragment_program *p )
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{
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int bit;
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/* First try and reuse temps which have been used already:
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*/
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bit = ffs( ~p->temp_in_use & p->alu_temps );
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/* Then any unused temporary:
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*/
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if (!bit)
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bit = ffs( ~p->temp_in_use );
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if (!bit) {
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_mesa_problem(NULL, "%s: out of temporaries\n", __FILE__);
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exit(1);
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}
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p->temp_in_use |= 1<<(bit-1);
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return make_ureg(PROGRAM_TEMPORARY, (bit-1));
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}
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static struct ureg get_tex_temp( struct texenv_fragment_program *p )
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{
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int bit;
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/* First try to find availble temp not previously used (to avoid
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* starting a new texture indirection). According to the spec, the
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* ~p->temps_output isn't necessary, but will keep it there for
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* now:
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*/
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bit = ffs( ~p->temp_in_use & ~p->alu_temps & ~p->temps_output );
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/* Then any unused temporary:
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*/
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if (!bit)
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bit = ffs( ~p->temp_in_use );
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if (!bit) {
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_mesa_problem(NULL, "%s: out of temporaries\n", __FILE__);
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exit(1);
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}
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p->temp_in_use |= 1<<(bit-1);
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return make_ureg(PROGRAM_TEMPORARY, (bit-1));
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}
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static void release_temps( struct texenv_fragment_program *p )
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{
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GLuint max_temp = p->ctx->Const.MaxFragmentProgramTemps;
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/* KW: To support tex_env_crossbar, don't release the registers in
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* temps_output.
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*/
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if (max_temp >= sizeof(int) * 8)
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p->temp_in_use = p->temps_output;
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else
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p->temp_in_use = ~((1<<max_temp)-1) | p->temps_output;
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}
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static struct ureg register_param6( struct texenv_fragment_program *p,
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GLint s0,
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GLint s1,
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GLint s2,
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GLint s3,
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GLint s4,
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GLint s5)
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{
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GLint tokens[6];
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GLuint idx;
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tokens[0] = s0;
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tokens[1] = s1;
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tokens[2] = s2;
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tokens[3] = s3;
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tokens[4] = s4;
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tokens[5] = s5;
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idx = _mesa_add_state_reference( p->program->Parameters, tokens );
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return make_ureg(PROGRAM_STATE_VAR, idx);
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}
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#define register_param1(p,s0) register_param6(p,s0,0,0,0,0,0)
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#define register_param2(p,s0,s1) register_param6(p,s0,s1,0,0,0,0)
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#define register_param3(p,s0,s1,s2) register_param6(p,s0,s1,s2,0,0,0)
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#define register_param4(p,s0,s1,s2,s3) register_param6(p,s0,s1,s2,s3,0,0)
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static struct ureg register_input( struct texenv_fragment_program *p, GLuint input )
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{
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p->program->InputsRead |= (1<<input);
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return make_ureg(PROGRAM_INPUT, input);
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}
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static void emit_arg( struct fp_src_register *reg,
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struct ureg ureg )
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{
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reg->File = ureg.file;
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reg->Index = ureg.idx;
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reg->Swizzle = ureg.swz;
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reg->NegateBase = ureg.negatebase;
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reg->Abs = ureg.abs;
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reg->NegateAbs = ureg.negateabs;
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}
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static void emit_dst( struct fp_dst_register *dst,
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struct ureg ureg, GLuint mask )
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{
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dst->File = ureg.file;
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dst->Index = ureg.idx;
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dst->WriteMask = mask;
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dst->CondMask = 0;
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dst->CondSwizzle = 0;
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}
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static struct fp_instruction *
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emit_op(struct texenv_fragment_program *p,
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GLuint op,
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struct ureg dest,
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GLuint mask,
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GLuint saturate,
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struct ureg src0,
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struct ureg src1,
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struct ureg src2 )
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{
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GLuint nr = p->program->Base.NumInstructions++;
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struct fp_instruction *inst = &p->program->Instructions[nr];
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memset(inst, 0, sizeof(*inst));
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inst->Opcode = op;
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emit_arg( &inst->SrcReg[0], src0 );
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emit_arg( &inst->SrcReg[1], src1 );
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emit_arg( &inst->SrcReg[2], src2 );
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inst->Saturate = saturate;
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emit_dst( &inst->DstReg, dest, mask );
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/* Accounting for indirection tracking:
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*/
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if (dest.file == PROGRAM_TEMPORARY)
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p->temps_output |= 1 << dest.idx;
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return inst;
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}
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static struct ureg emit_arith( struct texenv_fragment_program *p,
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GLuint op,
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struct ureg dest,
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GLuint mask,
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GLuint saturate,
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struct ureg src0,
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struct ureg src1,
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struct ureg src2 )
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{
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emit_op(p, op, dest, mask, saturate, src0, src1, src2);
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/* Accounting for indirection tracking:
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*/
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if (src0.file == PROGRAM_TEMPORARY)
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p->alu_temps |= 1 << src0.idx;
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if (!is_undef(src1) && src1.file == PROGRAM_TEMPORARY)
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p->alu_temps |= 1 << src1.idx;
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if (!is_undef(src2) && src2.file == PROGRAM_TEMPORARY)
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p->alu_temps |= 1 << src2.idx;
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if (dest.file == PROGRAM_TEMPORARY)
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p->alu_temps |= 1 << dest.idx;
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p->program->NumAluInstructions++;
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return dest;
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}
|
|
|
|
static struct ureg emit_texld( struct texenv_fragment_program *p,
|
|
GLuint op,
|
|
struct ureg dest,
|
|
GLuint destmask,
|
|
GLuint tex_unit,
|
|
GLuint tex_idx,
|
|
struct ureg coord )
|
|
{
|
|
struct fp_instruction *inst = emit_op( p, op,
|
|
dest, destmask,
|
|
0, /* don't saturate? */
|
|
coord, /* arg 0? */
|
|
undef,
|
|
undef);
|
|
|
|
inst->TexSrcIdx = tex_idx;
|
|
inst->TexSrcUnit = tex_unit;
|
|
|
|
p->program->NumTexInstructions++;
|
|
|
|
/* Is this a texture indirection?
|
|
*/
|
|
if ((coord.file == PROGRAM_TEMPORARY &&
|
|
(p->temps_output & (1<<coord.idx))) ||
|
|
(dest.file == PROGRAM_TEMPORARY &&
|
|
(p->alu_temps & (1<<dest.idx)))) {
|
|
p->program->NumTexIndirections++;
|
|
p->temps_output = 1<<coord.idx;
|
|
p->alu_temps = 0;
|
|
assert(0); /* KW: texture env crossbar */
|
|
}
|
|
|
|
return dest;
|
|
}
|
|
|
|
|
|
static struct ureg register_const4f( struct texenv_fragment_program *p,
|
|
GLfloat s0,
|
|
GLfloat s1,
|
|
GLfloat s2,
|
|
GLfloat s3)
|
|
{
|
|
GLfloat values[4];
|
|
GLuint idx;
|
|
values[0] = s0;
|
|
values[1] = s1;
|
|
values[2] = s2;
|
|
values[3] = s3;
|
|
idx = _mesa_add_unnamed_constant( p->program->Parameters, values );
|
|
return make_ureg(PROGRAM_STATE_VAR, idx);
|
|
}
|
|
|
|
#define register_scalar_const(p, s0) register_const4f(p, s0, s0, s0, s0)
|
|
#define register_const1f(p, s0) register_const4f(p, s0, 0, 0, 1)
|
|
#define register_const2f(p, s0, s1) register_const4f(p, s0, s1, 0, 1)
|
|
#define register_const3f(p, s0, s1, s2) register_const4f(p, s0, s1, s2, 1)
|
|
|
|
|
|
|
|
|
|
static struct ureg get_one( struct texenv_fragment_program *p )
|
|
{
|
|
if (is_undef(p->one))
|
|
p->one = register_scalar_const(p, 1.0);
|
|
return p->one;
|
|
}
|
|
|
|
static struct ureg get_half( struct texenv_fragment_program *p )
|
|
{
|
|
if (is_undef(p->half))
|
|
p->one = register_scalar_const(p, 0.5);
|
|
return p->half;
|
|
}
|
|
|
|
static struct ureg get_zero( struct texenv_fragment_program *p )
|
|
{
|
|
if (is_undef(p->zero))
|
|
p->one = register_scalar_const(p, 0.0);
|
|
return p->zero;
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
static void program_error( struct texenv_fragment_program *p, const char *msg )
|
|
{
|
|
_mesa_problem(NULL, msg);
|
|
p->error = 1;
|
|
}
|
|
|
|
static struct ureg get_source( struct texenv_fragment_program *p,
|
|
GLuint src, GLuint unit )
|
|
{
|
|
switch (src) {
|
|
case SRC_TEXTURE:
|
|
assert(!is_undef(p->src_texture[unit]));
|
|
return p->src_texture[unit];
|
|
|
|
case SRC_TEXTURE0:
|
|
case SRC_TEXTURE1:
|
|
case SRC_TEXTURE2:
|
|
case SRC_TEXTURE3:
|
|
case SRC_TEXTURE4:
|
|
case SRC_TEXTURE5:
|
|
case SRC_TEXTURE6:
|
|
case SRC_TEXTURE7:
|
|
assert(!is_undef(p->src_texture[src - SRC_TEXTURE0]));
|
|
return p->src_texture[src - SRC_TEXTURE0];
|
|
|
|
case SRC_CONSTANT:
|
|
return register_param2(p, STATE_TEXENV_COLOR, unit);
|
|
|
|
case SRC_PRIMARY_COLOR:
|
|
return register_input(p, FRAG_ATTRIB_COL0);
|
|
|
|
case SRC_PREVIOUS:
|
|
default:
|
|
if (is_undef(p->src_previous))
|
|
return register_input(p, FRAG_ATTRIB_COL0);
|
|
else
|
|
return p->src_previous;
|
|
}
|
|
}
|
|
|
|
static struct ureg emit_combine_source( struct texenv_fragment_program *p,
|
|
GLuint mask,
|
|
GLuint unit,
|
|
GLuint source,
|
|
GLuint operand )
|
|
{
|
|
struct ureg arg, src, one;
|
|
|
|
src = get_source(p, source, unit);
|
|
|
|
switch (operand) {
|
|
case OPR_ONE_MINUS_SRC_COLOR:
|
|
/* Get unused tmp,
|
|
* Emit tmp = 1.0 - arg.xyzw
|
|
*/
|
|
arg = get_temp( p );
|
|
one = get_one( p );
|
|
return emit_arith( p, FP_OPCODE_SUB, arg, mask, 0, one, src, undef);
|
|
|
|
case OPR_SRC_ALPHA:
|
|
if (mask == WRITEMASK_W)
|
|
return src;
|
|
else
|
|
return swizzle1( src, W );
|
|
case OPR_ONE_MINUS_SRC_ALPHA:
|
|
/* Get unused tmp,
|
|
* Emit tmp = 1.0 - arg.wwww
|
|
*/
|
|
arg = get_temp(p);
|
|
one = get_one(p);
|
|
return emit_arith(p, FP_OPCODE_SUB, arg, mask, 0,
|
|
one, swizzle1(src, W), undef);
|
|
case OPR_ZERO:
|
|
return get_zero(p);
|
|
case OPR_ONE:
|
|
return get_one(p);
|
|
case OPR_SRC_COLOR:
|
|
default:
|
|
return src;
|
|
}
|
|
}
|
|
|
|
static GLboolean args_match( struct state_key *key, GLuint unit )
|
|
{
|
|
int i, nr = key->unit[unit].NumArgsRGB;
|
|
|
|
for (i = 0 ; i < nr ; i++) {
|
|
if (key->unit[unit].OptA[i].Source != key->unit[unit].OptRGB[i].Source)
|
|
return GL_FALSE;
|
|
|
|
switch(key->unit[unit].OptA[i].Operand) {
|
|
case OPR_SRC_ALPHA:
|
|
switch(key->unit[unit].OptRGB[i].Operand) {
|
|
case OPR_SRC_COLOR:
|
|
case OPR_SRC_ALPHA:
|
|
break;
|
|
default:
|
|
return GL_FALSE;
|
|
}
|
|
break;
|
|
case OPR_ONE_MINUS_SRC_ALPHA:
|
|
switch(key->unit[unit].OptRGB[i].Operand) {
|
|
case OPR_ONE_MINUS_SRC_COLOR:
|
|
case OPR_ONE_MINUS_SRC_ALPHA:
|
|
break;
|
|
default:
|
|
return GL_FALSE;
|
|
}
|
|
break;
|
|
default:
|
|
return GL_FALSE; /* impossible */
|
|
}
|
|
}
|
|
|
|
return GL_TRUE;
|
|
}
|
|
|
|
static struct ureg emit_combine( struct texenv_fragment_program *p,
|
|
struct ureg dest,
|
|
GLuint mask,
|
|
GLuint saturate,
|
|
GLuint unit,
|
|
GLuint nr,
|
|
GLuint mode,
|
|
struct mode_opt *opt)
|
|
{
|
|
struct ureg src[3];
|
|
struct ureg tmp, half;
|
|
int i;
|
|
|
|
for (i = 0; i < nr; i++)
|
|
src[i] = emit_combine_source( p, mask, unit, opt[i].Source, opt[i].Operand );
|
|
|
|
switch (mode) {
|
|
case MODE_REPLACE:
|
|
if (mask == WRITEMASK_XYZW && !saturate)
|
|
return src[0];
|
|
else
|
|
return emit_arith( p, FP_OPCODE_MOV, dest, mask, saturate, src[0], undef, undef );
|
|
case MODE_MODULATE:
|
|
return emit_arith( p, FP_OPCODE_MUL, dest, mask, saturate,
|
|
src[0], src[1], undef );
|
|
case MODE_ADD:
|
|
return emit_arith( p, FP_OPCODE_ADD, dest, mask, saturate,
|
|
src[0], src[1], undef );
|
|
case MODE_ADD_SIGNED:
|
|
/* tmp = arg0 + arg1
|
|
* result = tmp - .5
|
|
*/
|
|
half = get_half(p);
|
|
emit_arith( p, FP_OPCODE_ADD, tmp, mask, 0, src[0], src[1], undef );
|
|
emit_arith( p, FP_OPCODE_SUB, dest, mask, saturate, tmp, half, undef );
|
|
return dest;
|
|
case MODE_INTERPOLATE:
|
|
/* Arg0 * (Arg2) + Arg1 * (1-Arg2) -- note arguments are reordered:
|
|
*/
|
|
return emit_arith( p, FP_OPCODE_LRP, dest, mask, saturate, src[2], src[0], src[1] );
|
|
|
|
case MODE_SUBTRACT:
|
|
return emit_arith( p, FP_OPCODE_SUB, dest, mask, saturate, src[0], src[1], undef );
|
|
|
|
case MODE_DOT3_RGBA:
|
|
case MODE_DOT3_RGBA_EXT:
|
|
case MODE_DOT3_RGB_EXT:
|
|
case MODE_DOT3_RGB: {
|
|
struct ureg tmp0 = get_temp( p );
|
|
struct ureg tmp1 = get_temp( p );
|
|
struct ureg neg1 = register_scalar_const(p, -1);
|
|
struct ureg two = register_scalar_const(p, 2);
|
|
|
|
/* tmp0 = 2*src0 - 1
|
|
* tmp1 = 2*src1 - 1
|
|
*
|
|
* dst = tmp0 dot3 tmp1
|
|
*/
|
|
emit_arith( p, FP_OPCODE_MAD, tmp0, WRITEMASK_XYZW, 0,
|
|
two, src[0], neg1);
|
|
|
|
if (memcmp(&src[0], &src[1], sizeof(struct ureg)) == 0)
|
|
tmp1 = tmp0;
|
|
else
|
|
emit_arith( p, FP_OPCODE_MAD, tmp1, WRITEMASK_XYZW, 0,
|
|
two, src[1], neg1);
|
|
emit_arith( p, FP_OPCODE_DP3, dest, mask, saturate, tmp0, tmp1, undef);
|
|
return dest;
|
|
}
|
|
case MODE_MODULATE_ADD_ATI:
|
|
/* Arg0 * Arg2 + Arg1 */
|
|
return emit_arith( p, FP_OPCODE_MAD, dest, mask, saturate,
|
|
src[0], src[2], src[1] );
|
|
case MODE_MODULATE_SIGNED_ADD_ATI: {
|
|
/* Arg0 * Arg2 + Arg1 - 0.5 */
|
|
struct ureg tmp0 = get_temp(p);
|
|
half = get_half(p);
|
|
emit_arith( p, FP_OPCODE_MAD, tmp0, mask, 0, src[0], src[2], src[1] );
|
|
emit_arith( p, FP_OPCODE_SUB, dest, mask, saturate, tmp0, half, undef );
|
|
return dest;
|
|
}
|
|
case MODE_MODULATE_SUBTRACT_ATI:
|
|
/* Arg0 * Arg2 - Arg1 */
|
|
emit_arith( p, FP_OPCODE_MAD, dest, mask, 0, src[0], src[2], negate(src[1]) );
|
|
return dest;
|
|
default:
|
|
return src[0];
|
|
}
|
|
}
|
|
|
|
|
|
static struct ureg emit_texenv( struct texenv_fragment_program *p, int unit )
|
|
{
|
|
struct state_key *key = p->state;
|
|
GLuint saturate = (unit < p->last_tex_stage);
|
|
GLuint rgb_shift, alpha_shift;
|
|
struct ureg out, shift;
|
|
struct ureg dest;
|
|
|
|
if (!key->unit[unit].enabled) {
|
|
return get_source(p, SRC_PREVIOUS, 0);
|
|
}
|
|
|
|
switch (key->unit[unit].ModeRGB) {
|
|
case MODE_DOT3_RGB_EXT:
|
|
alpha_shift = key->unit[unit].ScaleShiftA;
|
|
rgb_shift = 0;
|
|
break;
|
|
case MODE_DOT3_RGBA_EXT:
|
|
alpha_shift = 0;
|
|
rgb_shift = 0;
|
|
break;
|
|
default:
|
|
rgb_shift = key->unit[unit].ScaleShiftRGB;
|
|
alpha_shift = key->unit[unit].ScaleShiftA;
|
|
break;
|
|
}
|
|
|
|
/* If this is the very last calculation, emit direct to output reg:
|
|
*/
|
|
if (key->separate_specular ||
|
|
unit != p->last_tex_stage ||
|
|
alpha_shift ||
|
|
rgb_shift)
|
|
dest = get_temp( p );
|
|
else
|
|
dest = make_ureg(PROGRAM_OUTPUT, FRAG_OUTPUT_COLR);
|
|
|
|
/* Emit the RGB and A combine ops
|
|
*/
|
|
if (key->unit[unit].ModeRGB == key->unit[unit].ModeA &&
|
|
args_match(key, unit)) {
|
|
out = emit_combine( p, dest, WRITEMASK_XYZW, saturate,
|
|
unit,
|
|
key->unit[unit].NumArgsRGB,
|
|
key->unit[unit].ModeRGB,
|
|
key->unit[unit].OptRGB);
|
|
}
|
|
else if (key->unit[unit].ModeRGB == MODE_DOT3_RGBA_EXT ||
|
|
key->unit[unit].ModeA == MODE_DOT3_RGBA) {
|
|
|
|
out = emit_combine( p, dest, WRITEMASK_XYZW, saturate,
|
|
unit,
|
|
key->unit[unit].NumArgsRGB,
|
|
key->unit[unit].ModeRGB,
|
|
key->unit[unit].OptRGB);
|
|
}
|
|
else {
|
|
/* Need to do something to stop from re-emitting identical
|
|
* argument calculations here:
|
|
*/
|
|
out = emit_combine( p, dest, WRITEMASK_XYZ, saturate,
|
|
unit,
|
|
key->unit[unit].NumArgsRGB,
|
|
key->unit[unit].ModeRGB,
|
|
key->unit[unit].OptRGB);
|
|
out = emit_combine( p, dest, WRITEMASK_W, saturate,
|
|
unit,
|
|
key->unit[unit].NumArgsA,
|
|
key->unit[unit].ModeA,
|
|
key->unit[unit].OptA);
|
|
}
|
|
|
|
/* Deal with the final shift:
|
|
*/
|
|
if (alpha_shift || rgb_shift) {
|
|
if (rgb_shift == alpha_shift) {
|
|
shift = register_scalar_const(p, 1<<rgb_shift);
|
|
}
|
|
else {
|
|
shift = register_const4f(p,
|
|
1<<rgb_shift,
|
|
1<<rgb_shift,
|
|
1<<rgb_shift,
|
|
1<<alpha_shift);
|
|
}
|
|
return emit_arith( p, FP_OPCODE_MUL, dest, WRITEMASK_XYZW,
|
|
saturate, out, shift, undef );
|
|
}
|
|
else
|
|
return out;
|
|
}
|
|
|
|
|
|
|
|
static void load_texture( struct texenv_fragment_program *p, GLuint unit )
|
|
{
|
|
if (is_undef(p->src_texture[unit])) {
|
|
GLuint dim = p->state->unit[unit].source_index;
|
|
struct ureg texcoord = register_input(p, FRAG_ATTRIB_TEX0+unit);
|
|
struct ureg tmp = get_tex_temp( p );
|
|
|
|
if (dim == TEXTURE_UNKNOWN_INDEX)
|
|
program_error(p, "TexSrcBit");
|
|
|
|
/* TODO: Use D0_MASK_XY where possible.
|
|
*/
|
|
p->src_texture[unit] = emit_texld( p, FP_OPCODE_TXP,
|
|
tmp, WRITEMASK_XYZW,
|
|
unit, dim, texcoord );
|
|
}
|
|
}
|
|
|
|
static GLboolean load_texenv_source( struct texenv_fragment_program *p,
|
|
GLuint src, GLuint unit )
|
|
{
|
|
switch (src) {
|
|
case SRC_TEXTURE:
|
|
load_texture(p, unit);
|
|
break;
|
|
|
|
case SRC_TEXTURE0:
|
|
case SRC_TEXTURE1:
|
|
case SRC_TEXTURE2:
|
|
case SRC_TEXTURE3:
|
|
case SRC_TEXTURE4:
|
|
case SRC_TEXTURE5:
|
|
case SRC_TEXTURE6:
|
|
case SRC_TEXTURE7:
|
|
if (!p->state->unit[src - SRC_TEXTURE0].enabled)
|
|
return GL_FALSE;
|
|
load_texture(p, src - SRC_TEXTURE0);
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return GL_TRUE;
|
|
}
|
|
|
|
static GLboolean load_texunit_sources( struct texenv_fragment_program *p, int unit )
|
|
{
|
|
struct state_key *key = p->state;
|
|
int i, nr = key->unit[unit].NumArgsRGB;
|
|
for (i = 0; i < nr; i++) {
|
|
if (!load_texenv_source( p, key->unit[unit].OptRGB[i].Source, unit) ||
|
|
!load_texenv_source( p, key->unit[unit].OptA[i].Source, unit ))
|
|
return GL_FALSE;
|
|
}
|
|
return GL_TRUE;
|
|
}
|
|
|
|
static void create_new_program(struct state_key *key, GLcontext *ctx,
|
|
struct fragment_program *program)
|
|
{
|
|
struct texenv_fragment_program p;
|
|
GLuint unit;
|
|
struct ureg cf, out;
|
|
|
|
_mesa_memset(&p, 0, sizeof(p));
|
|
p.ctx = ctx;
|
|
p.state = key;
|
|
p.program = program;
|
|
|
|
p.program->Instructions = MALLOC(sizeof(struct fp_instruction) * 100);
|
|
p.program->Base.NumInstructions = 0;
|
|
p.program->Base.Target = GL_FRAGMENT_PROGRAM_ARB;
|
|
p.program->NumTexIndirections = 1; /* correct? */
|
|
p.program->NumTexInstructions = 0;
|
|
p.program->NumAluInstructions = 0;
|
|
p.program->Base.String = 0;
|
|
p.program->Base.NumInstructions =
|
|
p.program->Base.NumTemporaries =
|
|
p.program->Base.NumParameters =
|
|
p.program->Base.NumAttributes = p.program->Base.NumAddressRegs = 0;
|
|
p.program->Parameters = _mesa_new_parameter_list();
|
|
|
|
p.program->InputsRead = 0;
|
|
p.program->OutputsWritten = 1 << FRAG_OUTPUT_COLR;
|
|
|
|
for (unit = 0; unit < MAX_TEXTURE_UNITS; unit++)
|
|
p.src_texture[unit] = undef;
|
|
|
|
p.src_previous = undef;
|
|
p.last_tex_stage = 0;
|
|
release_temps(&p);
|
|
|
|
if (key->enabled_units) {
|
|
/* First pass - to support texture_env_crossbar, first identify
|
|
* all referenced texture sources and emit texld instructions
|
|
* for each:
|
|
*/
|
|
for (unit = 0 ; unit < ctx->Const.MaxTextureUnits ; unit++)
|
|
if (key->unit[unit].enabled) {
|
|
if (load_texunit_sources( &p, unit ))
|
|
p.last_tex_stage = unit;
|
|
}
|
|
|
|
/* Second pass - emit combine instructions to build final color:
|
|
*/
|
|
for (unit = 0 ; unit < ctx->Const.MaxTextureUnits; unit++)
|
|
if (key->enabled_units & (1<<unit)) {
|
|
p.src_previous = emit_texenv( &p, unit );
|
|
release_temps(&p); /* release all temps */
|
|
}
|
|
}
|
|
|
|
cf = get_source( &p, SRC_PREVIOUS, 0 );
|
|
out = make_ureg( PROGRAM_OUTPUT, FRAG_OUTPUT_COLR );
|
|
|
|
if (key->separate_specular) {
|
|
/* Emit specular add.
|
|
*/
|
|
struct ureg s = register_input(&p, FRAG_ATTRIB_COL1);
|
|
emit_arith( &p, FP_OPCODE_ADD, out, WRITEMASK_XYZ, 0, cf, s, undef );
|
|
}
|
|
else if (memcmp(&cf, &out, sizeof(cf)) != 0) {
|
|
/* Will wind up in here if no texture enabled or a couple of
|
|
* other scenarios (GL_REPLACE for instance).
|
|
*/
|
|
emit_arith( &p, FP_OPCODE_MOV, out, WRITEMASK_XYZW, 0, cf, undef, undef );
|
|
}
|
|
|
|
/* Finish up:
|
|
*/
|
|
emit_arith( &p, FP_OPCODE_END, undef, WRITEMASK_XYZW, 0, undef, undef, undef);
|
|
|
|
if (key->fog_enabled) {
|
|
/* Pull fog mode from GLcontext, the value in the state key is
|
|
* a reduced value and not what is expected in FogOption
|
|
*/
|
|
p.program->FogOption = ctx->Fog.Mode;
|
|
} else
|
|
p.program->FogOption = GL_NONE;
|
|
|
|
if (p.program->NumTexIndirections > ctx->Const.MaxFragmentProgramTexIndirections)
|
|
program_error(&p, "Exceeded max nr indirect texture lookups");
|
|
|
|
if (p.program->NumTexInstructions > ctx->Const.MaxFragmentProgramTexInstructions)
|
|
program_error(&p, "Exceeded max TEX instructions");
|
|
|
|
if (p.program->NumAluInstructions > ctx->Const.MaxFragmentProgramAluInstructions)
|
|
program_error(&p, "Exceeded max ALU instructions");
|
|
|
|
|
|
/* Notify driver the fragment program has (actually) changed.
|
|
*/
|
|
if (ctx->Driver.ProgramStringNotify || DISASSEM) {
|
|
if (ctx->Driver.ProgramStringNotify)
|
|
ctx->Driver.ProgramStringNotify( ctx, GL_FRAGMENT_PROGRAM_ARB,
|
|
&p.program->Base );
|
|
|
|
if (DISASSEM) {
|
|
_mesa_debug_fp_inst(p.program->NumTexInstructions + p.program->NumAluInstructions,
|
|
p.program->Instructions);
|
|
_mesa_printf("\n");
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
static void *search_cache( struct texenvprog_cache *cache,
|
|
GLuint hash,
|
|
const void *key,
|
|
GLuint keysize)
|
|
{
|
|
struct texenvprog_cache *c;
|
|
|
|
for (c = cache; c; c = c->next) {
|
|
if (c->hash == hash && memcmp(c->key, key, keysize) == 0)
|
|
return c->data;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static void cache_item( struct texenvprog_cache **cache,
|
|
GLuint hash,
|
|
void *key,
|
|
void *data )
|
|
{
|
|
struct texenvprog_cache *c = MALLOC(sizeof(*c));
|
|
c->hash = hash;
|
|
c->key = key;
|
|
c->data = data;
|
|
c->next = *cache;
|
|
*cache = c;
|
|
}
|
|
|
|
static GLuint hash_key( struct state_key *key )
|
|
{
|
|
GLuint *ikey = (GLuint *)key;
|
|
GLuint hash = 0, i;
|
|
|
|
/* I'm sure this can be improved on, but speed is important:
|
|
*/
|
|
for (i = 0; i < sizeof(*key)/sizeof(GLuint); i++)
|
|
hash ^= ikey[i];
|
|
|
|
return hash;
|
|
}
|
|
|
|
void _mesa_UpdateTexEnvProgram( GLcontext *ctx )
|
|
{
|
|
struct state_key *key;
|
|
GLuint hash;
|
|
|
|
if (ctx->FragmentProgram._Enabled)
|
|
return;
|
|
|
|
key = make_state_key(ctx);
|
|
hash = hash_key(key);
|
|
|
|
ctx->FragmentProgram._Current = ctx->_TexEnvProgram =
|
|
(struct fragment_program *)
|
|
search_cache(ctx->Texture.env_fp_cache, hash, key, sizeof(*key));
|
|
|
|
if (!ctx->_TexEnvProgram) {
|
|
if (0) _mesa_printf("Building new texenv proggy for key %x\n", hash);
|
|
|
|
ctx->FragmentProgram._Current = ctx->_TexEnvProgram =
|
|
(struct fragment_program *)
|
|
ctx->Driver.NewProgram(ctx, GL_FRAGMENT_PROGRAM_ARB, 0);
|
|
|
|
create_new_program(key, ctx, ctx->_TexEnvProgram);
|
|
|
|
cache_item(&ctx->Texture.env_fp_cache, hash, key, ctx->_TexEnvProgram);
|
|
} else {
|
|
if (0) _mesa_printf("Found existing texenv program for key %x\n", hash);
|
|
}
|
|
|
|
}
|
|
|
|
void _mesa_TexEnvProgramCacheDestroy( GLcontext *ctx )
|
|
{
|
|
struct texenvprog_cache *a, *tmp;
|
|
|
|
for (a = ctx->Texture.env_fp_cache; a; a = tmp) {
|
|
tmp = a->next;
|
|
FREE(a->key);
|
|
FREE(a->data);
|
|
FREE(a);
|
|
}
|
|
}
|
|
|