diff options
Diffstat (limited to 'mesalib/src/mesa/main/texenvprogram.c')
| -rw-r--r-- | mesalib/src/mesa/main/texenvprogram.c | 1618 |
1 files changed, 0 insertions, 1618 deletions
diff --git a/mesalib/src/mesa/main/texenvprogram.c b/mesalib/src/mesa/main/texenvprogram.c deleted file mode 100644 index c30fe9616..000000000 --- a/mesalib/src/mesa/main/texenvprogram.c +++ /dev/null @@ -1,1618 +0,0 @@ -/**************************************************************************
- *
- * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
- * All Rights Reserved.
- * Copyright 2009 VMware, Inc. All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the
- * "Software"), to deal in the Software without restriction, including
- * without limitation the rights to use, copy, modify, merge, publish,
- * distribute, sub license, and/or sell copies of the Software, and to
- * permit persons to whom the Software is furnished to do so, subject to
- * the following conditions:
- *
- * The above copyright notice and this permission notice (including the
- * next paragraph) shall be included in all copies or substantial portions
- * of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
- * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
- * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
- * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
- * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
- *
- **************************************************************************/
-
-#include "glheader.h"
-#include "imports.h"
-#include "mtypes.h"
-#include "program/program.h"
-#include "program/prog_parameter.h"
-#include "program/prog_cache.h"
-#include "program/prog_instruction.h"
-#include "program/prog_print.h"
-#include "program/prog_statevars.h"
-#include "program/programopt.h"
-#include "texenvprogram.h"
-
-
-/*
- * Note on texture units:
- *
- * The number of texture units supported by fixed-function fragment
- * processing is MAX_TEXTURE_COORD_UNITS, not MAX_TEXTURE_IMAGE_UNITS.
- * That's because there's a one-to-one correspondence between texture
- * coordinates and samplers in fixed-function processing.
- *
- * Since fixed-function vertex processing is limited to MAX_TEXTURE_COORD_UNITS
- * sets of texcoords, so is fixed-function fragment processing.
- *
- * We can safely use ctx->Const.MaxTextureUnits for loop bounds.
- */
-
-
-struct texenvprog_cache_item
-{
- GLuint hash;
- void *key;
- struct gl_fragment_program *data;
- struct texenvprog_cache_item *next;
-};
-
-static GLboolean
-texenv_doing_secondary_color(struct gl_context *ctx)
-{
- if (ctx->Light.Enabled &&
- (ctx->Light.Model.ColorControl == GL_SEPARATE_SPECULAR_COLOR))
- return GL_TRUE;
-
- if (ctx->Fog.ColorSumEnabled)
- return GL_TRUE;
-
- return GL_FALSE;
-}
-
-/**
- * Up to nine instructions per tex unit, plus fog, specular color.
- */
-#define MAX_INSTRUCTIONS ((MAX_TEXTURE_COORD_UNITS * 9) + 12)
-
-#define DISASSEM (MESA_VERBOSE & VERBOSE_DISASSEM)
-
-struct mode_opt {
-#ifdef __GNUC__
- __extension__ GLubyte Source:4; /**< SRC_x */
- __extension__ GLubyte Operand:3; /**< OPR_x */
-#else
- GLubyte Source; /**< SRC_x */
- GLubyte Operand; /**< OPR_x */
-#endif
-};
-
-struct state_key {
- GLuint nr_enabled_units:8;
- GLuint enabled_units:8;
- GLuint separate_specular:1;
- GLuint fog_enabled:1;
- GLuint fog_mode:2; /**< FOG_x */
- GLuint inputs_available:12;
- GLuint num_draw_buffers:4;
-
- /* NOTE: This array of structs must be last! (see "keySize" below) */
- struct {
- GLuint enabled:1;
- GLuint source_index:3; /**< TEXTURE_x_INDEX */
- GLuint shadow:1;
- GLuint ScaleShiftRGB:2;
- GLuint ScaleShiftA:2;
-
- GLuint NumArgsRGB:3; /**< up to MAX_COMBINER_TERMS */
- GLuint ModeRGB:5; /**< MODE_x */
-
- GLuint NumArgsA:3; /**< up to MAX_COMBINER_TERMS */
- GLuint ModeA:5; /**< MODE_x */
-
- GLuint texture_cyl_wrap:1; /**< For gallium test/debug only */
-
- struct mode_opt OptRGB[MAX_COMBINER_TERMS];
- struct mode_opt OptA[MAX_COMBINER_TERMS];
- } unit[MAX_TEXTURE_UNITS];
-};
-
-#define FOG_LINEAR 0
-#define FOG_EXP 1
-#define FOG_EXP2 2
-#define FOG_UNKNOWN 3
-
-static GLuint translate_fog_mode( GLenum mode )
-{
- switch (mode) {
- case GL_LINEAR: return FOG_LINEAR;
- case GL_EXP: return FOG_EXP;
- case GL_EXP2: return FOG_EXP2;
- default: return FOG_UNKNOWN;
- }
-}
-
-#define OPR_SRC_COLOR 0
-#define OPR_ONE_MINUS_SRC_COLOR 1
-#define OPR_SRC_ALPHA 2
-#define OPR_ONE_MINUS_SRC_ALPHA 3
-#define OPR_ZERO 4
-#define OPR_ONE 5
-#define OPR_UNKNOWN 7
-
-static GLuint translate_operand( GLenum operand )
-{
- switch (operand) {
- case GL_SRC_COLOR: return OPR_SRC_COLOR;
- case GL_ONE_MINUS_SRC_COLOR: return OPR_ONE_MINUS_SRC_COLOR;
- case GL_SRC_ALPHA: return OPR_SRC_ALPHA;
- case GL_ONE_MINUS_SRC_ALPHA: return OPR_ONE_MINUS_SRC_ALPHA;
- case GL_ZERO: return OPR_ZERO;
- case GL_ONE: return OPR_ONE;
- default:
- assert(0);
- return OPR_UNKNOWN;
- }
-}
-
-#define SRC_TEXTURE 0
-#define SRC_TEXTURE0 1
-#define SRC_TEXTURE1 2
-#define SRC_TEXTURE2 3
-#define SRC_TEXTURE3 4
-#define SRC_TEXTURE4 5
-#define SRC_TEXTURE5 6
-#define SRC_TEXTURE6 7
-#define SRC_TEXTURE7 8
-#define SRC_CONSTANT 9
-#define SRC_PRIMARY_COLOR 10
-#define SRC_PREVIOUS 11
-#define SRC_ZERO 12
-#define SRC_UNKNOWN 15
-
-static GLuint translate_source( GLenum src )
-{
- switch (src) {
- case GL_TEXTURE: return SRC_TEXTURE;
- case GL_TEXTURE0:
- case GL_TEXTURE1:
- case GL_TEXTURE2:
- case GL_TEXTURE3:
- case GL_TEXTURE4:
- case GL_TEXTURE5:
- case GL_TEXTURE6:
- case GL_TEXTURE7: return SRC_TEXTURE0 + (src - GL_TEXTURE0);
- case GL_CONSTANT: return SRC_CONSTANT;
- case GL_PRIMARY_COLOR: return SRC_PRIMARY_COLOR;
- case GL_PREVIOUS: return SRC_PREVIOUS;
- case GL_ZERO:
- return SRC_ZERO;
- default:
- assert(0);
- return SRC_UNKNOWN;
- }
-}
-
-#define MODE_REPLACE 0 /* r = a0 */
-#define MODE_MODULATE 1 /* r = a0 * a1 */
-#define MODE_ADD 2 /* r = a0 + a1 */
-#define MODE_ADD_SIGNED 3 /* r = a0 + a1 - 0.5 */
-#define MODE_INTERPOLATE 4 /* r = a0 * a2 + a1 * (1 - a2) */
-#define MODE_SUBTRACT 5 /* r = a0 - a1 */
-#define MODE_DOT3_RGB 6 /* r = a0 . a1 */
-#define MODE_DOT3_RGB_EXT 7 /* r = a0 . a1 */
-#define MODE_DOT3_RGBA 8 /* r = a0 . a1 */
-#define MODE_DOT3_RGBA_EXT 9 /* r = a0 . a1 */
-#define MODE_MODULATE_ADD_ATI 10 /* r = a0 * a2 + a1 */
-#define MODE_MODULATE_SIGNED_ADD_ATI 11 /* r = a0 * a2 + a1 - 0.5 */
-#define MODE_MODULATE_SUBTRACT_ATI 12 /* r = a0 * a2 - a1 */
-#define MODE_ADD_PRODUCTS 13 /* r = a0 * a1 + a2 * a3 */
-#define MODE_ADD_PRODUCTS_SIGNED 14 /* r = a0 * a1 + a2 * a3 - 0.5 */
-#define MODE_BUMP_ENVMAP_ATI 15 /* special */
-#define MODE_UNKNOWN 16
-
-/**
- * Translate GL combiner state into a MODE_x value
- */
-static GLuint translate_mode( GLenum envMode, GLenum mode )
-{
- switch (mode) {
- case GL_REPLACE: return MODE_REPLACE;
- case GL_MODULATE: return MODE_MODULATE;
- case GL_ADD:
- if (envMode == GL_COMBINE4_NV)
- return MODE_ADD_PRODUCTS;
- else
- return MODE_ADD;
- case GL_ADD_SIGNED:
- if (envMode == GL_COMBINE4_NV)
- return MODE_ADD_PRODUCTS_SIGNED;
- else
- return MODE_ADD_SIGNED;
- case GL_INTERPOLATE: return MODE_INTERPOLATE;
- case GL_SUBTRACT: return MODE_SUBTRACT;
- case GL_DOT3_RGB: return MODE_DOT3_RGB;
- case GL_DOT3_RGB_EXT: return MODE_DOT3_RGB_EXT;
- case GL_DOT3_RGBA: return MODE_DOT3_RGBA;
- case GL_DOT3_RGBA_EXT: return MODE_DOT3_RGBA_EXT;
- case GL_MODULATE_ADD_ATI: return MODE_MODULATE_ADD_ATI;
- case GL_MODULATE_SIGNED_ADD_ATI: return MODE_MODULATE_SIGNED_ADD_ATI;
- case GL_MODULATE_SUBTRACT_ATI: return MODE_MODULATE_SUBTRACT_ATI;
- case GL_BUMP_ENVMAP_ATI: return MODE_BUMP_ENVMAP_ATI;
- default:
- assert(0);
- return MODE_UNKNOWN;
- }
-}
-
-
-/**
- * Do we need to clamp the results of the given texture env/combine mode?
- * If the inputs to the mode are in [0,1] we don't always have to clamp
- * the results.
- */
-static GLboolean
-need_saturate( GLuint mode )
-{
- switch (mode) {
- case MODE_REPLACE:
- case MODE_MODULATE:
- case MODE_INTERPOLATE:
- return GL_FALSE;
- case MODE_ADD:
- case MODE_ADD_SIGNED:
- case MODE_SUBTRACT:
- case MODE_DOT3_RGB:
- case MODE_DOT3_RGB_EXT:
- case MODE_DOT3_RGBA:
- case MODE_DOT3_RGBA_EXT:
- case MODE_MODULATE_ADD_ATI:
- case MODE_MODULATE_SIGNED_ADD_ATI:
- case MODE_MODULATE_SUBTRACT_ATI:
- case MODE_ADD_PRODUCTS:
- case MODE_ADD_PRODUCTS_SIGNED:
- case MODE_BUMP_ENVMAP_ATI:
- return GL_TRUE;
- default:
- assert(0);
- return GL_FALSE;
- }
-}
-
-
-
-/**
- * Translate TEXTURE_x_BIT to TEXTURE_x_INDEX.
- */
-static GLuint translate_tex_src_bit( GLbitfield bit )
-{
- ASSERT(bit);
- return _mesa_ffs(bit) - 1;
-}
-
-
-#define VERT_BIT_TEX_ANY (0xff << VERT_ATTRIB_TEX0)
-#define VERT_RESULT_TEX_ANY (0xff << VERT_RESULT_TEX0)
-
-/**
- * Identify all possible varying inputs. The fragment program will
- * never reference non-varying inputs, but will track them via state
- * constants instead.
- *
- * This function figures out all the inputs that the fragment program
- * has access to. The bitmask is later reduced to just those which
- * are actually referenced.
- */
-static GLbitfield get_fp_input_mask( struct gl_context *ctx )
-{
- /* _NEW_PROGRAM */
- const GLboolean vertexShader =
- (ctx->Shader.CurrentVertexProgram &&
- ctx->Shader.CurrentVertexProgram->LinkStatus &&
- ctx->Shader.CurrentVertexProgram->VertexProgram);
- const GLboolean vertexProgram = ctx->VertexProgram._Enabled;
- GLbitfield fp_inputs = 0x0;
-
- if (ctx->VertexProgram._Overriden) {
- /* Somebody's messing with the vertex program and we don't have
- * a clue what's happening. Assume that it could be producing
- * all possible outputs.
- */
- fp_inputs = ~0;
- }
- else if (ctx->RenderMode == GL_FEEDBACK) {
- /* _NEW_RENDERMODE */
- fp_inputs = (FRAG_BIT_COL0 | FRAG_BIT_TEX0);
- }
- else if (!(vertexProgram || vertexShader) ||
- !ctx->VertexProgram._Current) {
- /* Fixed function vertex logic */
- /* _NEW_ARRAY */
- GLbitfield varying_inputs = ctx->varying_vp_inputs;
-
- /* These get generated in the setup routine regardless of the
- * vertex program:
- */
- /* _NEW_POINT */
- if (ctx->Point.PointSprite)
- varying_inputs |= FRAG_BITS_TEX_ANY;
-
- /* First look at what values may be computed by the generated
- * vertex program:
- */
- /* _NEW_LIGHT */
- if (ctx->Light.Enabled) {
- fp_inputs |= FRAG_BIT_COL0;
-
- if (texenv_doing_secondary_color(ctx))
- fp_inputs |= FRAG_BIT_COL1;
- }
-
- /* _NEW_TEXTURE */
- fp_inputs |= (ctx->Texture._TexGenEnabled |
- ctx->Texture._TexMatEnabled) << FRAG_ATTRIB_TEX0;
-
- /* Then look at what might be varying as a result of enabled
- * arrays, etc:
- */
- if (varying_inputs & VERT_BIT_COLOR0)
- fp_inputs |= FRAG_BIT_COL0;
- if (varying_inputs & VERT_BIT_COLOR1)
- fp_inputs |= FRAG_BIT_COL1;
-
- fp_inputs |= (((varying_inputs & VERT_BIT_TEX_ANY) >> VERT_ATTRIB_TEX0)
- << FRAG_ATTRIB_TEX0);
-
- }
- else {
- /* calculate from vp->outputs */
- struct gl_vertex_program *vprog;
- GLbitfield64 vp_outputs;
-
- /* Choose GLSL vertex shader over ARB vertex program. Need this
- * since vertex shader state validation comes after fragment state
- * validation (see additional comments in state.c).
- */
- if (vertexShader)
- vprog = ctx->Shader.CurrentVertexProgram->VertexProgram;
- else
- vprog = ctx->VertexProgram.Current;
-
- vp_outputs = vprog->Base.OutputsWritten;
-
- /* These get generated in the setup routine regardless of the
- * vertex program:
- */
- /* _NEW_POINT */
- if (ctx->Point.PointSprite)
- vp_outputs |= FRAG_BITS_TEX_ANY;
-
- if (vp_outputs & (1 << VERT_RESULT_COL0))
- fp_inputs |= FRAG_BIT_COL0;
- if (vp_outputs & (1 << VERT_RESULT_COL1))
- fp_inputs |= FRAG_BIT_COL1;
-
- fp_inputs |= (((vp_outputs & VERT_RESULT_TEX_ANY) >> VERT_RESULT_TEX0)
- << FRAG_ATTRIB_TEX0);
- }
-
- return fp_inputs;
-}
-
-
-/**
- * Examine current texture environment state and generate a unique
- * key to identify it.
- */
-static GLuint make_state_key( struct gl_context *ctx, struct state_key *key )
-{
- GLuint i, j;
- GLbitfield inputs_referenced = FRAG_BIT_COL0;
- const GLbitfield inputs_available = get_fp_input_mask( ctx );
- GLuint keySize;
-
- memset(key, 0, sizeof(*key));
-
- /* _NEW_TEXTURE */
- for (i = 0; i < ctx->Const.MaxTextureUnits; i++) {
- const struct gl_texture_unit *texUnit = &ctx->Texture.Unit[i];
- const struct gl_texture_object *texObj = texUnit->_Current;
- const struct gl_tex_env_combine_state *comb = texUnit->_CurrentCombine;
- GLenum format;
-
- if (!texUnit->_ReallyEnabled || !texUnit->Enabled)
- continue;
-
- format = texObj->Image[0][texObj->BaseLevel]->_BaseFormat;
-
- key->unit[i].enabled = 1;
- key->enabled_units |= (1<<i);
- key->nr_enabled_units = i + 1;
- inputs_referenced |= FRAG_BIT_TEX(i);
-
- key->unit[i].source_index =
- translate_tex_src_bit(texUnit->_ReallyEnabled);
-
- key->unit[i].shadow = ((texObj->CompareMode == GL_COMPARE_R_TO_TEXTURE) &&
- ((format == GL_DEPTH_COMPONENT) ||
- (format == GL_DEPTH_STENCIL_EXT)));
-
- key->unit[i].NumArgsRGB = comb->_NumArgsRGB;
- key->unit[i].NumArgsA = comb->_NumArgsA;
-
- key->unit[i].ModeRGB =
- translate_mode(texUnit->EnvMode, comb->ModeRGB);
- key->unit[i].ModeA =
- translate_mode(texUnit->EnvMode, comb->ModeA);
-
- key->unit[i].ScaleShiftRGB = comb->ScaleShiftRGB;
- key->unit[i].ScaleShiftA = comb->ScaleShiftA;
-
- for (j = 0; j < MAX_COMBINER_TERMS; j++) {
- key->unit[i].OptRGB[j].Operand = translate_operand(comb->OperandRGB[j]);
- key->unit[i].OptA[j].Operand = translate_operand(comb->OperandA[j]);
- key->unit[i].OptRGB[j].Source = translate_source(comb->SourceRGB[j]);
- key->unit[i].OptA[j].Source = translate_source(comb->SourceA[j]);
- }
-
- if (key->unit[i].ModeRGB == MODE_BUMP_ENVMAP_ATI) {
- /* requires some special translation */
- key->unit[i].NumArgsRGB = 2;
- key->unit[i].ScaleShiftRGB = 0;
- key->unit[i].OptRGB[0].Operand = OPR_SRC_COLOR;
- key->unit[i].OptRGB[0].Source = SRC_TEXTURE;
- key->unit[i].OptRGB[1].Operand = OPR_SRC_COLOR;
- key->unit[i].OptRGB[1].Source = texUnit->BumpTarget - GL_TEXTURE0 + SRC_TEXTURE0;
- }
-
- /* this is a back-door for enabling cylindrical texture wrap mode */
- if (texObj->Priority == 0.125)
- key->unit[i].texture_cyl_wrap = 1;
- }
-
- /* _NEW_LIGHT | _NEW_FOG */
- if (texenv_doing_secondary_color(ctx)) {
- key->separate_specular = 1;
- inputs_referenced |= FRAG_BIT_COL1;
- }
-
- /* _NEW_FOG */
- if (ctx->Fog.Enabled) {
- key->fog_enabled = 1;
- key->fog_mode = translate_fog_mode(ctx->Fog.Mode);
- inputs_referenced |= FRAG_BIT_FOGC; /* maybe */
- }
-
- /* _NEW_BUFFERS */
- key->num_draw_buffers = ctx->DrawBuffer->_NumColorDrawBuffers;
-
- key->inputs_available = (inputs_available & inputs_referenced);
-
- /* compute size of state key, ignoring unused texture units */
- keySize = sizeof(*key) - sizeof(key->unit)
- + key->nr_enabled_units * sizeof(key->unit[0]);
-
- return keySize;
-}
-
-
-/**
- * Use uregs to represent registers internally, translate to Mesa's
- * expected formats on emit.
- *
- * NOTE: These are passed by value extensively in this file rather
- * than as usual by pointer reference. If this disturbs you, try
- * remembering they are just 32bits in size.
- *
- * GCC is smart enough to deal with these dword-sized structures in
- * much the same way as if I had defined them as dwords and was using
- * macros to access and set the fields. This is much nicer and easier
- * to evolve.
- */
-struct ureg {
- GLuint file:4;
- GLuint idx:8;
- GLuint negatebase:1;
- GLuint swz:12;
- GLuint pad:7;
-};
-
-static const struct ureg undef = {
- PROGRAM_UNDEFINED,
- ~0,
- 0,
- 0,
- 0
-};
-
-
-/** State used to build the fragment program:
- */
-struct texenv_fragment_program {
- struct gl_fragment_program *program;
- struct state_key *state;
-
- GLbitfield alu_temps; /**< Track texture indirections, see spec. */
- GLbitfield temps_output; /**< Track texture indirections, see spec. */
- GLbitfield temp_in_use; /**< Tracks temporary regs which are in use. */
- GLboolean error;
-
- struct ureg src_texture[MAX_TEXTURE_COORD_UNITS];
- /* Reg containing each texture unit's sampled texture color,
- * else undef.
- */
-
- struct ureg texcoord_tex[MAX_TEXTURE_COORD_UNITS];
- /* Reg containing texcoord for a texture unit,
- * needed for bump mapping, else undef.
- */
-
- struct ureg src_previous; /**< Reg containing color from previous
- * stage. May need to be decl'd.
- */
-
- GLuint last_tex_stage; /**< Number of last enabled texture unit */
-
- struct ureg half;
- struct ureg one;
- struct ureg zero;
-};
-
-
-
-static struct ureg make_ureg(GLuint file, GLuint idx)
-{
- struct ureg reg;
- reg.file = file;
- reg.idx = idx;
- reg.negatebase = 0;
- reg.swz = SWIZZLE_NOOP;
- reg.pad = 0;
- return reg;
-}
-
-static struct ureg swizzle( struct ureg reg, int x, int y, int z, int w )
-{
- reg.swz = MAKE_SWIZZLE4(GET_SWZ(reg.swz, x),
- GET_SWZ(reg.swz, y),
- GET_SWZ(reg.swz, z),
- GET_SWZ(reg.swz, w));
-
- return reg;
-}
-
-static struct ureg swizzle1( struct ureg reg, int x )
-{
- return swizzle(reg, x, x, x, x);
-}
-
-static struct ureg negate( struct ureg reg )
-{
- reg.negatebase ^= 1;
- return reg;
-}
-
-static GLboolean is_undef( struct ureg reg )
-{
- return reg.file == PROGRAM_UNDEFINED;
-}
-
-
-static struct ureg get_temp( struct texenv_fragment_program *p )
-{
- GLint bit;
-
- /* First try and reuse temps which have been used already:
- */
- bit = _mesa_ffs( ~p->temp_in_use & p->alu_temps );
-
- /* Then any unused temporary:
- */
- if (!bit)
- bit = _mesa_ffs( ~p->temp_in_use );
-
- if (!bit) {
- _mesa_problem(NULL, "%s: out of temporaries\n", __FILE__);
- exit(1);
- }
-
- if ((GLuint) bit > p->program->Base.NumTemporaries)
- p->program->Base.NumTemporaries = bit;
-
- p->temp_in_use |= 1<<(bit-1);
- return make_ureg(PROGRAM_TEMPORARY, (bit-1));
-}
-
-static struct ureg get_tex_temp( struct texenv_fragment_program *p )
-{
- int bit;
-
- /* First try to find available temp not previously used (to avoid
- * starting a new texture indirection). According to the spec, the
- * ~p->temps_output isn't necessary, but will keep it there for
- * now:
- */
- bit = _mesa_ffs( ~p->temp_in_use & ~p->alu_temps & ~p->temps_output );
-
- /* Then any unused temporary:
- */
- if (!bit)
- bit = _mesa_ffs( ~p->temp_in_use );
-
- if (!bit) {
- _mesa_problem(NULL, "%s: out of temporaries\n", __FILE__);
- exit(1);
- }
-
- if ((GLuint) bit > p->program->Base.NumTemporaries)
- p->program->Base.NumTemporaries = bit;
-
- p->temp_in_use |= 1<<(bit-1);
- return make_ureg(PROGRAM_TEMPORARY, (bit-1));
-}
-
-
-/** Mark a temp reg as being no longer allocatable. */
-static void reserve_temp( struct texenv_fragment_program *p, struct ureg r )
-{
- if (r.file == PROGRAM_TEMPORARY)
- p->temps_output |= (1 << r.idx);
-}
-
-
-static void release_temps(struct gl_context *ctx, struct texenv_fragment_program *p )
-{
- GLuint max_temp = ctx->Const.FragmentProgram.MaxTemps;
-
- /* KW: To support tex_env_crossbar, don't release the registers in
- * temps_output.
- */
- if (max_temp >= sizeof(int) * 8)
- p->temp_in_use = p->temps_output;
- else
- p->temp_in_use = ~((1<<max_temp)-1) | p->temps_output;
-}
-
-
-static struct ureg register_param5( struct texenv_fragment_program *p,
- GLint s0,
- GLint s1,
- GLint s2,
- GLint s3,
- GLint s4)
-{
- gl_state_index tokens[STATE_LENGTH];
- GLuint idx;
- tokens[0] = s0;
- tokens[1] = s1;
- tokens[2] = s2;
- tokens[3] = s3;
- tokens[4] = s4;
- idx = _mesa_add_state_reference( p->program->Base.Parameters, tokens );
- return make_ureg(PROGRAM_STATE_VAR, idx);
-}
-
-
-#define register_param1(p,s0) register_param5(p,s0,0,0,0,0)
-#define register_param2(p,s0,s1) register_param5(p,s0,s1,0,0,0)
-#define register_param3(p,s0,s1,s2) register_param5(p,s0,s1,s2,0,0)
-#define register_param4(p,s0,s1,s2,s3) register_param5(p,s0,s1,s2,s3,0)
-
-static GLuint frag_to_vert_attrib( GLuint attrib )
-{
- switch (attrib) {
- case FRAG_ATTRIB_COL0: return VERT_ATTRIB_COLOR0;
- case FRAG_ATTRIB_COL1: return VERT_ATTRIB_COLOR1;
- default:
- assert(attrib >= FRAG_ATTRIB_TEX0);
- assert(attrib <= FRAG_ATTRIB_TEX7);
- return attrib - FRAG_ATTRIB_TEX0 + VERT_ATTRIB_TEX0;
- }
-}
-
-
-static struct ureg register_input( struct texenv_fragment_program *p, GLuint input )
-{
- if (p->state->inputs_available & (1<<input)) {
- p->program->Base.InputsRead |= (1 << input);
- return make_ureg(PROGRAM_INPUT, input);
- }
- else {
- GLuint idx = frag_to_vert_attrib( input );
- return register_param3( p, STATE_INTERNAL, STATE_CURRENT_ATTRIB, idx );
- }
-}
-
-
-static void emit_arg( struct prog_src_register *reg,
- struct ureg ureg )
-{
- reg->File = ureg.file;
- reg->Index = ureg.idx;
- reg->Swizzle = ureg.swz;
- reg->Negate = ureg.negatebase ? NEGATE_XYZW : NEGATE_NONE;
- reg->Abs = GL_FALSE;
-}
-
-static void emit_dst( struct prog_dst_register *dst,
- struct ureg ureg, GLuint mask )
-{
- dst->File = ureg.file;
- dst->Index = ureg.idx;
- dst->WriteMask = mask;
- dst->CondMask = COND_TR; /* always pass cond test */
- dst->CondSwizzle = SWIZZLE_NOOP;
-}
-
-static struct prog_instruction *
-emit_op(struct texenv_fragment_program *p,
- enum prog_opcode op,
- struct ureg dest,
- GLuint mask,
- GLboolean saturate,
- struct ureg src0,
- struct ureg src1,
- struct ureg src2 )
-{
- const GLuint nr = p->program->Base.NumInstructions++;
- struct prog_instruction *inst = &p->program->Base.Instructions[nr];
-
- assert(nr < MAX_INSTRUCTIONS);
-
- _mesa_init_instructions(inst, 1);
- inst->Opcode = op;
-
- emit_arg( &inst->SrcReg[0], src0 );
- emit_arg( &inst->SrcReg[1], src1 );
- emit_arg( &inst->SrcReg[2], src2 );
-
- inst->SaturateMode = saturate ? SATURATE_ZERO_ONE : SATURATE_OFF;
-
- emit_dst( &inst->DstReg, dest, mask );
-
-#if 0
- /* Accounting for indirection tracking:
- */
- if (dest.file == PROGRAM_TEMPORARY)
- p->temps_output |= 1 << dest.idx;
-#endif
-
- return inst;
-}
-
-
-static struct ureg emit_arith( struct texenv_fragment_program *p,
- enum prog_opcode op,
- struct ureg dest,
- GLuint mask,
- GLboolean saturate,
- struct ureg src0,
- struct ureg src1,
- struct ureg src2 )
-{
- emit_op(p, op, dest, mask, saturate, src0, src1, src2);
-
- /* Accounting for indirection tracking:
- */
- if (src0.file == PROGRAM_TEMPORARY)
- p->alu_temps |= 1 << src0.idx;
-
- if (!is_undef(src1) && src1.file == PROGRAM_TEMPORARY)
- p->alu_temps |= 1 << src1.idx;
-
- if (!is_undef(src2) && src2.file == PROGRAM_TEMPORARY)
- p->alu_temps |= 1 << src2.idx;
-
- if (dest.file == PROGRAM_TEMPORARY)
- p->alu_temps |= 1 << dest.idx;
-
- p->program->Base.NumAluInstructions++;
- return dest;
-}
-
-static struct ureg emit_texld( struct texenv_fragment_program *p,
- enum prog_opcode op,
- struct ureg dest,
- GLuint destmask,
- GLuint tex_unit,
- GLuint tex_idx,
- GLuint tex_shadow,
- struct ureg coord )
-{
- struct prog_instruction *inst = emit_op( p, op,
- dest, destmask,
- GL_FALSE, /* don't saturate? */
- coord, /* arg 0? */
- undef,
- undef);
-
- inst->TexSrcTarget = tex_idx;
- inst->TexSrcUnit = tex_unit;
- inst->TexShadow = tex_shadow;
-
- p->program->Base.NumTexInstructions++;
-
- /* Accounting for indirection tracking:
- */
- reserve_temp(p, dest);
-
-#if 0
- /* 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->Base.NumTexIndirections++;
- p->temps_output = 1<<coord.idx;
- p->alu_temps = 0;
- assert(0); /* KW: texture env crossbar */
- }
-#endif
-
- 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, swizzle;
- struct ureg r;
- values[0] = s0;
- values[1] = s1;
- values[2] = s2;
- values[3] = s3;
- idx = _mesa_add_unnamed_constant( p->program->Base.Parameters, values, 4,
- &swizzle );
- r = make_ureg(PROGRAM_CONSTANT, idx);
- r.swz = swizzle;
- return r;
-}
-
-#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->half = 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->zero = register_scalar_const(p, 0.0);
- return p->zero;
-}
-
-
-static void program_error( struct texenv_fragment_program *p, const char *msg )
-{
- _mesa_problem(NULL, "%s", 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_ZERO:
- return get_zero(p);
-
- case SRC_PREVIOUS:
- if (is_undef(p->src_previous))
- return register_input(p, FRAG_ATTRIB_COL0);
- else
- return p->src_previous;
-
- default:
- assert(0);
- return undef;
- }
-}
-
-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, OPCODE_SUB, arg, mask, 0, one, src, undef);
-
- case OPR_SRC_ALPHA:
- if (mask == WRITEMASK_W)
- return src;
- else
- return swizzle1( src, SWIZZLE_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, OPCODE_SUB, arg, mask, 0,
- one, swizzle1(src, SWIZZLE_W), undef);
- case OPR_ZERO:
- return get_zero(p);
- case OPR_ONE:
- return get_one(p);
- case OPR_SRC_COLOR:
- return src;
- default:
- assert(0);
- return src;
- }
-}
-
-/**
- * Check if the RGB and Alpha sources and operands match for the given
- * texture unit's combinder state. When the RGB and A sources and
- * operands match, we can emit fewer instructions.
- */
-static GLboolean args_match( const struct state_key *key, GLuint unit )
-{
- GLuint i, numArgs = key->unit[unit].NumArgsRGB;
-
- for (i = 0; i < numArgs; 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,
- GLboolean saturate,
- GLuint unit,
- GLuint nr,
- GLuint mode,
- const struct mode_opt *opt)
-{
- struct ureg src[MAX_COMBINER_TERMS];
- struct ureg tmp, half;
- GLuint i;
-
- assert(nr <= MAX_COMBINER_TERMS);
-
- 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, OPCODE_MOV, dest, mask, saturate, src[0], undef, undef );
- case MODE_MODULATE:
- return emit_arith( p, OPCODE_MUL, dest, mask, saturate,
- src[0], src[1], undef );
- case MODE_ADD:
- return emit_arith( p, OPCODE_ADD, dest, mask, saturate,
- src[0], src[1], undef );
- case MODE_ADD_SIGNED:
- /* tmp = arg0 + arg1
- * result = tmp - .5
- */
- half = get_half(p);
- tmp = get_temp( p );
- emit_arith( p, OPCODE_ADD, tmp, mask, 0, src[0], src[1], undef );
- emit_arith( p, 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, OPCODE_LRP, dest, mask, saturate, src[2], src[0], src[1] );
-
- case MODE_SUBTRACT:
- return emit_arith( p, 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, 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, OPCODE_MAD, tmp1, WRITEMASK_XYZW, 0,
- two, src[1], neg1);
- emit_arith( p, OPCODE_DP3, dest, mask, saturate, tmp0, tmp1, undef);
- return dest;
- }
- case MODE_MODULATE_ADD_ATI:
- /* Arg0 * Arg2 + Arg1 */
- return emit_arith( p, 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, OPCODE_MAD, tmp0, mask, 0, src[0], src[2], src[1] );
- emit_arith( p, OPCODE_SUB, dest, mask, saturate, tmp0, half, undef );
- return dest;
- }
- case MODE_MODULATE_SUBTRACT_ATI:
- /* Arg0 * Arg2 - Arg1 */
- emit_arith( p, OPCODE_MAD, dest, mask, 0, src[0], src[2], negate(src[1]) );
- return dest;
- case MODE_ADD_PRODUCTS:
- /* Arg0 * Arg1 + Arg2 * Arg3 */
- {
- struct ureg tmp0 = get_temp(p);
- emit_arith( p, OPCODE_MUL, tmp0, mask, 0, src[0], src[1], undef );
- emit_arith( p, OPCODE_MAD, dest, mask, saturate, src[2], src[3], tmp0 );
- }
- return dest;
- case MODE_ADD_PRODUCTS_SIGNED:
- /* Arg0 * Arg1 + Arg2 * Arg3 - 0.5 */
- {
- struct ureg tmp0 = get_temp(p);
- half = get_half(p);
- emit_arith( p, OPCODE_MUL, tmp0, mask, 0, src[0], src[1], undef );
- emit_arith( p, OPCODE_MAD, tmp0, mask, 0, src[2], src[3], tmp0 );
- emit_arith( p, OPCODE_SUB, dest, mask, saturate, tmp0, half, undef );
- }
- return dest;
- case MODE_BUMP_ENVMAP_ATI:
- /* special - not handled here */
- assert(0);
- return src[0];
- default:
- assert(0);
- return src[0];
- }
-}
-
-
-/**
- * Generate instructions for one texture unit's env/combiner mode.
- */
-static struct ureg
-emit_texenv(struct texenv_fragment_program *p, GLuint unit)
-{
- const struct state_key *key = p->state;
- GLboolean rgb_saturate, alpha_saturate;
- GLuint rgb_shift, alpha_shift;
- struct ureg out, dest;
-
- if (!key->unit[unit].enabled) {
- return get_source(p, SRC_PREVIOUS, 0);
- }
- if (key->unit[unit].ModeRGB == MODE_BUMP_ENVMAP_ATI) {
- /* this isn't really a env stage delivering a color and handled elsewhere */
- 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 we'll do rgb/alpha shifting don't saturate in emit_combine().
- * We don't want to clamp twice.
- */
- if (rgb_shift)
- rgb_saturate = GL_FALSE; /* saturate after rgb shift */
- else if (need_saturate(key->unit[unit].ModeRGB))
- rgb_saturate = GL_TRUE;
- else
- rgb_saturate = GL_FALSE;
-
- if (alpha_shift)
- alpha_saturate = GL_FALSE; /* saturate after alpha shift */
- else if (need_saturate(key->unit[unit].ModeA))
- alpha_saturate = GL_TRUE;
- else
- alpha_saturate = GL_FALSE;
-
- /* If this is the very last calculation (and various other conditions
- * are met), emit directly to the color output register. Otherwise,
- * emit to a temporary register.
- */
- if (key->separate_specular ||
- unit != p->last_tex_stage ||
- alpha_shift ||
- key->num_draw_buffers != 1 ||
- rgb_shift)
- dest = get_temp( p );
- else
- dest = make_ureg(PROGRAM_OUTPUT, FRAG_RESULT_COLOR);
-
- /* 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, rgb_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].ModeRGB == MODE_DOT3_RGBA) {
- out = emit_combine( p, dest, WRITEMASK_XYZW, rgb_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, rgb_saturate,
- unit,
- key->unit[unit].NumArgsRGB,
- key->unit[unit].ModeRGB,
- key->unit[unit].OptRGB);
- out = emit_combine( p, dest, WRITEMASK_W, alpha_saturate,
- unit,
- key->unit[unit].NumArgsA,
- key->unit[unit].ModeA,
- key->unit[unit].OptA);
- }
-
- /* Deal with the final shift:
- */
- if (alpha_shift || rgb_shift) {
- struct ureg shift;
- GLboolean saturate = GL_TRUE; /* always saturate at this point */
-
- if (rgb_shift == alpha_shift) {
- shift = register_scalar_const(p, (GLfloat)(1<<rgb_shift));
- }
- else {
- shift = register_const4f(p,
- (GLfloat)(1<<rgb_shift),
- (GLfloat)(1<<rgb_shift),
- (GLfloat)(1<<rgb_shift),
- (GLfloat)(1<<alpha_shift));
- }
- return emit_arith( p, OPCODE_MUL, dest, WRITEMASK_XYZW,
- saturate, out, shift, undef );
- }
- else
- return out;
-}
-
-
-/**
- * Generate instruction for getting a texture source term.
- */
-static void load_texture( struct texenv_fragment_program *p, GLuint unit )
-{
- if (is_undef(p->src_texture[unit])) {
- const GLuint texTarget = p->state->unit[unit].source_index;
- struct ureg texcoord;
- struct ureg tmp = get_tex_temp( p );
-
- if (is_undef(p->texcoord_tex[unit])) {
- texcoord = register_input(p, FRAG_ATTRIB_TEX0+unit);
- }
- else {
- /* might want to reuse this reg for tex output actually */
- texcoord = p->texcoord_tex[unit];
- }
-
- /* TODO: Use D0_MASK_XY where possible.
- */
- if (p->state->unit[unit].enabled) {
- GLboolean shadow = GL_FALSE;
-
- if (p->state->unit[unit].shadow) {
- p->program->Base.ShadowSamplers |= 1 << unit;
- shadow = GL_TRUE;
- }
-
- p->src_texture[unit] = emit_texld( p, OPCODE_TXP,
- tmp, WRITEMASK_XYZW,
- unit, texTarget, shadow,
- texcoord );
-
- p->program->Base.SamplersUsed |= (1 << unit);
- /* This identity mapping should already be in place
- * (see _mesa_init_program_struct()) but let's be safe.
- */
- p->program->Base.SamplerUnits[unit] = unit;
- }
- else
- p->src_texture[unit] = get_zero(p);
-
- if (p->state->unit[unit].texture_cyl_wrap) {
- /* set flag which is checked by Mesa->Gallium program translation */
- p->program->Base.InputFlags[0] |= PROG_PARAM_BIT_CYL_WRAP;
- }
-
- }
-}
-
-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:
- load_texture(p, src - SRC_TEXTURE0);
- break;
-
- default:
- /* not a texture src - do nothing */
- break;
- }
-
- return GL_TRUE;
-}
-
-
-/**
- * Generate instructions for loading all texture source terms.
- */
-static GLboolean
-load_texunit_sources( struct texenv_fragment_program *p, GLuint unit )
-{
- const struct state_key *key = p->state;
- GLuint i;
-
- for (i = 0; i < key->unit[unit].NumArgsRGB; i++) {
- load_texenv_source( p, key->unit[unit].OptRGB[i].Source, unit );
- }
-
- for (i = 0; i < key->unit[unit].NumArgsA; i++) {
- load_texenv_source( p, key->unit[unit].OptA[i].Source, unit );
- }
-
- return GL_TRUE;
-}
-
-/**
- * Generate instructions for loading bump map textures.
- */
-static GLboolean
-load_texunit_bumpmap( struct texenv_fragment_program *p, GLuint unit )
-{
- const struct state_key *key = p->state;
- GLuint bumpedUnitNr = key->unit[unit].OptRGB[1].Source - SRC_TEXTURE0;
- struct ureg texcDst, bumpMapRes;
- struct ureg constdudvcolor = register_const4f(p, 0.0, 0.0, 0.0, 1.0);
- struct ureg texcSrc = register_input(p, FRAG_ATTRIB_TEX0 + bumpedUnitNr);
- struct ureg rotMat0 = register_param3( p, STATE_INTERNAL, STATE_ROT_MATRIX_0, unit );
- struct ureg rotMat1 = register_param3( p, STATE_INTERNAL, STATE_ROT_MATRIX_1, unit );
-
- load_texenv_source( p, unit + SRC_TEXTURE0, unit );
-
- bumpMapRes = get_source(p, key->unit[unit].OptRGB[0].Source, unit);
- texcDst = get_tex_temp( p );
- p->texcoord_tex[bumpedUnitNr] = texcDst;
-
- /* Apply rot matrix and add coords to be available in next phase.
- * dest = (Arg0.xxxx * rotMat0 + Arg1) + (Arg0.yyyy * rotMat1)
- * note only 2 coords are affected the rest are left unchanged (mul by 0)
- */
- emit_arith( p, OPCODE_MAD, texcDst, WRITEMASK_XYZW, 0,
- swizzle1(bumpMapRes, SWIZZLE_X), rotMat0, texcSrc );
- emit_arith( p, OPCODE_MAD, texcDst, WRITEMASK_XYZW, 0,
- swizzle1(bumpMapRes, SWIZZLE_Y), rotMat1, texcDst );
-
- /* Move 0,0,0,1 into bumpmap src if someone (crossbar) is foolish
- * enough to access this later, should optimize away.
- */
- emit_arith( p, OPCODE_MOV, bumpMapRes, WRITEMASK_XYZW, 0,
- constdudvcolor, undef, undef );
-
- return GL_TRUE;
-}
-
-/**
- * Generate a new fragment program which implements the context's
- * current texture env/combine mode.
- */
-static void
-create_new_program(struct gl_context *ctx, struct state_key *key,
- struct gl_fragment_program *program)
-{
- struct prog_instruction instBuffer[MAX_INSTRUCTIONS];
- struct texenv_fragment_program p;
- GLuint unit;
- struct ureg cf, out;
- int i;
-
- memset(&p, 0, sizeof(p));
- p.state = key;
- p.program = program;
-
- /* During code generation, use locally-allocated instruction buffer,
- * then alloc dynamic storage below.
- */
- p.program->Base.Instructions = instBuffer;
- p.program->Base.Target = GL_FRAGMENT_PROGRAM_ARB;
- p.program->Base.String = NULL;
- p.program->Base.NumTexIndirections = 1; /* is this right? */
- p.program->Base.NumTexInstructions = 0;
- p.program->Base.NumAluInstructions = 0;
- p.program->Base.NumInstructions = 0;
- p.program->Base.NumTemporaries = 0;
- p.program->Base.NumParameters = 0;
- p.program->Base.NumAttributes = 0;
- p.program->Base.NumAddressRegs = 0;
- p.program->Base.Parameters = _mesa_new_parameter_list();
- p.program->Base.InputsRead = 0x0;
-
- if (key->num_draw_buffers == 1)
- p.program->Base.OutputsWritten = 1 << FRAG_RESULT_COLOR;
- else {
- for (i = 0; i < key->num_draw_buffers; i++)
- p.program->Base.OutputsWritten |= (1 << (FRAG_RESULT_DATA0 + i));
- }
-
- for (unit = 0; unit < ctx->Const.MaxTextureUnits; unit++) {
- p.src_texture[unit] = undef;
- p.texcoord_tex[unit] = undef;
- }
-
- p.src_previous = undef;
- p.half = undef;
- p.zero = undef;
- p.one = undef;
-
- p.last_tex_stage = 0;
- release_temps(ctx, &p);
-
- if (key->enabled_units && key->num_draw_buffers) {
- GLboolean needbumpstage = GL_FALSE;
-
- /* Zeroth pass - bump map textures first */
- for (unit = 0; unit < key->nr_enabled_units; unit++)
- if (key->unit[unit].enabled &&
- key->unit[unit].ModeRGB == MODE_BUMP_ENVMAP_ATI) {
- needbumpstage = GL_TRUE;
- load_texunit_bumpmap( &p, unit );
- }
- if (needbumpstage)
- p.program->Base.NumTexIndirections++;
-
- /* First pass - to support texture_env_crossbar, first identify
- * all referenced texture sources and emit texld instructions
- * for each:
- */
- for (unit = 0; unit < key->nr_enabled_units; unit++)
- if (key->unit[unit].enabled) {
- load_texunit_sources( &p, unit );
- p.last_tex_stage = unit;
- }
-
- /* Second pass - emit combine instructions to build final color:
- */
- for (unit = 0; unit < key->nr_enabled_units; unit++)
- if (key->unit[unit].enabled) {
- p.src_previous = emit_texenv( &p, unit );
- reserve_temp(&p, p.src_previous); /* don't re-use this temp reg */
- release_temps(ctx, &p); /* release all temps */
- }
- }
-
- cf = get_source( &p, SRC_PREVIOUS, 0 );
-
- for (i = 0; i < key->num_draw_buffers; i++) {
- if (key->num_draw_buffers == 1)
- out = make_ureg( PROGRAM_OUTPUT, FRAG_RESULT_COLOR );
- else {
- out = make_ureg( PROGRAM_OUTPUT, FRAG_RESULT_DATA0 + i );
- }
-
- if (key->separate_specular) {
- /* Emit specular add.
- */
- struct ureg s = register_input(&p, FRAG_ATTRIB_COL1);
- emit_arith( &p, OPCODE_ADD, out, WRITEMASK_XYZ, 0, cf, s, undef );
- emit_arith( &p, OPCODE_MOV, out, WRITEMASK_W, 0, cf, undef, 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, OPCODE_MOV, out, WRITEMASK_XYZW, 0, cf, undef, undef );
- }
- }
- /* Finish up:
- */
- emit_arith( &p, OPCODE_END, undef, WRITEMASK_XYZW, 0, undef, undef, undef);
-
- if (key->fog_enabled) {
- /* Pull fog mode from struct gl_context, the value in the state key is
- * a reduced value and not what is expected in FogOption
- */
- p.program->FogOption = ctx->Fog.Mode;
- p.program->Base.InputsRead |= FRAG_BIT_FOGC;
- }
- else {
- p.program->FogOption = GL_NONE;
- }
-
- if (p.program->Base.NumTexIndirections > ctx->Const.FragmentProgram.MaxTexIndirections)
- program_error(&p, "Exceeded max nr indirect texture lookups");
-
- if (p.program->Base.NumTexInstructions > ctx->Const.FragmentProgram.MaxTexInstructions)
- program_error(&p, "Exceeded max TEX instructions");
-
- if (p.program->Base.NumAluInstructions > ctx->Const.FragmentProgram.MaxAluInstructions)
- program_error(&p, "Exceeded max ALU instructions");
-
- ASSERT(p.program->Base.NumInstructions <= MAX_INSTRUCTIONS);
-
- /* Allocate final instruction array */
- p.program->Base.Instructions
- = _mesa_alloc_instructions(p.program->Base.NumInstructions);
- if (!p.program->Base.Instructions) {
- _mesa_error(ctx, GL_OUT_OF_MEMORY,
- "generating tex env program");
- return;
- }
- _mesa_copy_instructions(p.program->Base.Instructions, instBuffer,
- p.program->Base.NumInstructions);
-
- if (key->num_draw_buffers && p.program->FogOption) {
- _mesa_append_fog_code(ctx, p.program);
- p.program->FogOption = GL_NONE;
- }
-
-
- /* Notify driver the fragment program has (actually) changed.
- */
- if (ctx->Driver.ProgramStringNotify) {
- GLboolean ok = ctx->Driver.ProgramStringNotify(ctx,
- GL_FRAGMENT_PROGRAM_ARB,
- &p.program->Base);
- /* Driver should be able to handle any texenv programs as long as
- * the driver correctly reported max number of texture units correctly,
- * etc.
- */
- ASSERT(ok);
- (void) ok; /* silence unused var warning */
- }
-
- if (DISASSEM) {
- _mesa_print_program(&p.program->Base);
- printf("\n");
- }
-}
-
-
-/**
- * Return a fragment program which implements the current
- * fixed-function texture, fog and color-sum operations.
- */
-struct gl_fragment_program *
-_mesa_get_fixed_func_fragment_program(struct gl_context *ctx)
-{
- struct gl_fragment_program *prog;
- struct state_key key;
- GLuint keySize;
-
- keySize = make_state_key(ctx, &key);
-
- prog = (struct gl_fragment_program *)
- _mesa_search_program_cache(ctx->FragmentProgram.Cache,
- &key, keySize);
-
- if (!prog) {
- prog = (struct gl_fragment_program *)
- ctx->Driver.NewProgram(ctx, GL_FRAGMENT_PROGRAM_ARB, 0);
-
- create_new_program(ctx, &key, prog);
-
- _mesa_program_cache_insert(ctx, ctx->FragmentProgram.Cache,
- &key, keySize, &prog->Base);
- }
-
- return prog;
-}
|