*
* 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
#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;
struct texenvprog_cache_item *next;
};
+static GLboolean
+texenv_doing_secondary_color(GLcontext *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;
+}
/**
- * This MAX is probably a bit generous, but that's OK. There can be
- * up to four instructions per texture unit (TEX + 3 for combine),
- * then there's fog and specular add.
+ * Up to nine instructions per tex unit, plus fog, specular color.
*/
-#define MAX_INSTRUCTIONS ((MAX_TEXTURE_UNITS * 4) + 12)
+#define MAX_INSTRUCTIONS ((MAX_TEXTURE_COORD_UNITS * 9) + 12)
#define DISASSEM (MESA_VERBOSE & VERBOSE_DISASSEM)
};
struct state_key {
- GLbitfield enabled_units;
+ GLuint nr_enabled_units:8;
+ GLuint enabled_units:8;
GLuint separate_specular:1;
GLuint fog_enabled:1;
GLuint fog_mode:2;
+ GLuint inputs_available:12;
struct {
GLuint enabled:1;
GLuint ScaleShiftRGB:2;
GLuint ScaleShiftA:2;
- GLuint NumArgsRGB:2;
- GLuint ModeRGB:4;
- struct mode_opt OptRGB[3];
+ GLuint NumArgsRGB:3;
+ GLuint ModeRGB:5;
+ struct mode_opt OptRGB[MAX_COMBINER_TERMS];
- GLuint NumArgsA:2;
- GLuint ModeA:4;
- struct mode_opt OptA[3];
+ GLuint NumArgsA:3;
+ GLuint ModeA:5;
+ struct mode_opt OptA[MAX_COMBINER_TERMS];
} unit[8];
};
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: return OPR_UNKNOWN;
+ default:
+ assert(0);
+ return OPR_UNKNOWN;
}
}
#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 )
case GL_CONSTANT: return SRC_CONSTANT;
case GL_PRIMARY_COLOR: return SRC_PRIMARY_COLOR;
case GL_PREVIOUS: return SRC_PREVIOUS;
- default: return SRC_UNKNOWN;
+ case GL_ZERO:
+ return SRC_ZERO;
+ default:
+ assert(0);
+ return SRC_UNKNOWN;
}
}
-#define MODE_REPLACE 0
-#define MODE_MODULATE 1
-#define MODE_ADD 2
-#define MODE_ADD_SIGNED 3
-#define MODE_INTERPOLATE 4
-#define MODE_SUBTRACT 5
-#define MODE_DOT3_RGB 6
-#define MODE_DOT3_RGB_EXT 7
-#define MODE_DOT3_RGBA 8
-#define MODE_DOT3_RGBA_EXT 9
-#define MODE_MODULATE_ADD_ATI 10
-#define MODE_MODULATE_SIGNED_ADD_ATI 11
-#define MODE_MODULATE_SUBTRACT_ATI 12
-#define MODE_UNKNOWN 15
-
-static GLuint translate_mode( GLenum mode )
+#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: return MODE_ADD;
- case GL_ADD_SIGNED: return MODE_ADD_SIGNED;
+ 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_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;
- default: return MODE_UNKNOWN;
+ case GL_BUMP_ENVMAP_ATI: return MODE_BUMP_ENVMAP_ATI;
+ default:
+ assert(0);
+ return MODE_UNKNOWN;
}
}
#define TEXTURE_UNKNOWN_INDEX 7
static GLuint translate_tex_src_bit( GLbitfield bit )
{
+ /* make sure number of switch cases is correct */
+ assert(NUM_TEXTURE_TARGETS == 7);
switch (bit) {
case TEXTURE_1D_BIT: return TEXTURE_1D_INDEX;
case TEXTURE_2D_BIT: return TEXTURE_2D_INDEX;
case TEXTURE_RECT_BIT: return TEXTURE_RECT_INDEX;
case TEXTURE_3D_BIT: return TEXTURE_3D_INDEX;
case TEXTURE_CUBE_BIT: return TEXTURE_CUBE_INDEX;
- default: return TEXTURE_UNKNOWN_INDEX;
+ case TEXTURE_1D_ARRAY_BIT: return TEXTURE_1D_ARRAY_INDEX;
+ case TEXTURE_2D_ARRAY_BIT: return TEXTURE_2D_ARRAY_INDEX;
+ default:
+ assert(0);
+ return TEXTURE_UNKNOWN_INDEX;
+ }
+}
+
+#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( GLcontext *ctx )
+{
+ /* _NEW_PROGRAM */
+ const GLboolean vertexShader = (ctx->Shader.CurrentProgram &&
+ ctx->Shader.CurrentProgram->LinkStatus &&
+ ctx->Shader.CurrentProgram->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;
+ GLbitfield 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.CurrentProgram->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 void make_state_key( GLcontext *ctx, struct state_key *key )
{
GLuint i, j;
-
+ GLbitfield inputs_referenced = FRAG_BIT_COL0;
+ GLbitfield inputs_available = get_fp_input_mask( ctx );
+
memset(key, 0, sizeof(*key));
- for (i=0;i<MAX_TEXTURE_UNITS;i++) {
+ /* _NEW_TEXTURE */
+ for (i = 0; i < ctx->Const.MaxTextureUnits; i++) {
const struct gl_texture_unit *texUnit = &ctx->Texture.Unit[i];
GLenum format;
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].NumArgsA = texUnit->_CurrentCombine->_NumArgsA;
key->unit[i].ModeRGB =
- translate_mode(texUnit->_CurrentCombine->ModeRGB);
+ translate_mode(texUnit->EnvMode, texUnit->_CurrentCombine->ModeRGB);
key->unit[i].ModeA =
- translate_mode(texUnit->_CurrentCombine->ModeA);
-
+ translate_mode(texUnit->EnvMode, texUnit->_CurrentCombine->ModeA);
+
key->unit[i].ScaleShiftRGB = texUnit->_CurrentCombine->ScaleShiftRGB;
key->unit[i].ScaleShiftA = texUnit->_CurrentCombine->ScaleShiftA;
- for (j=0;j<3;j++) {
+ for (j = 0; j < MAX_COMBINER_TERMS; j++) {
key->unit[i].OptRGB[j].Operand =
translate_operand(texUnit->_CurrentCombine->OperandRGB[j]);
key->unit[i].OptA[j].Operand =
key->unit[i].OptA[j].Source =
translate_source(texUnit->_CurrentCombine->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;
+ }
}
-
- if (ctx->_TriangleCaps & DD_SEPARATE_SPECULAR)
+
+ /* _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 */
}
+
+ key->inputs_available = (inputs_available & inputs_referenced);
}
-/* Use uregs to represent registers internally, translate to Mesa's
+/**
+ * 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
};
-/* State used to build the fragment program:
+/** State used to build the fragment program:
*/
struct texenv_fragment_program {
struct gl_fragment_program *program;
GLcontext *ctx;
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. */
+ 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_UNITS];
+ struct ureg src_texture[MAX_TEXTURE_COORD_UNITS];
/* Reg containing each texture unit's sampled texture color,
* else undef.
*/
- struct ureg src_previous; /* Reg containing color from previous
+ 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 */
+ GLuint last_tex_stage; /**< Number of last enabled texture unit */
struct ureg half;
struct ureg one;
{
int bit;
- /* First try to find availble temp not previously used (to avoid
+ /* 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:
}
+/** 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(GLcontext *ctx, struct texenv_fragment_program *p )
{
GLuint max_temp = ctx->Const.FragmentProgram.MaxTemps;
#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 )
{
- p->program->Base.InputsRead |= (1 << input);
- return make_ureg(PROGRAM_INPUT, 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 );
+ }
}
reg->File = ureg.file;
reg->Index = ureg.idx;
reg->Swizzle = ureg.swz;
- reg->NegateBase = ureg.negatebase ? 0xf : 0x0;
+ reg->Negate = ureg.negatebase ? NEGATE_XYZW : NEGATE_NONE;
reg->Abs = ureg.abs;
- reg->NegateAbs = ureg.negateabs;
}
static void emit_dst( struct prog_dst_register *dst,
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;
}
GLuint destmask,
GLuint tex_unit,
GLuint tex_idx,
+ GLuint tex_shadow,
struct ureg coord )
{
struct prog_instruction *inst = emit_op( p, op,
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->alu_temps = 0;
assert(0); /* KW: texture env crossbar */
}
+#endif
return dest;
}
{
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 );
- ASSERT(swizzle == SWIZZLE_NOOP);
- return make_ureg(PROGRAM_CONSTANT, idx);
+ r = make_ureg(PROGRAM_CONSTANT, idx);
+ r.swz = swizzle;
+ return r;
}
#define register_scalar_const(p, s0) register_const4f(p, s0, s0, s0, s0)
case SRC_PRIMARY_COLOR:
return register_input(p, FRAG_ATTRIB_COL0);
+ case SRC_ZERO:
+ return get_zero(p);
+
case SRC_PREVIOUS:
- default:
if (is_undef(p->src_previous))
return register_input(p, FRAG_ATTRIB_COL0);
else
return p->src_previous;
+
+ default:
+ assert(0);
+ return undef;
}
}
case OPR_ONE:
return get_one(p);
case OPR_SRC_COLOR:
+ return src;
default:
+ assert(0);
return src;
}
}
GLuint mode,
const struct mode_opt *opt)
{
- struct ureg src[3];
+ struct ureg src[MAX_COMBINER_TERMS];
struct ureg tmp, half;
GLuint i;
+ assert(nr <= MAX_COMBINER_TERMS);
+
tmp = undef; /* silence warning (bug 5318) */
for (i = 0; i < nr; i++)
/* 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];
}
}
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:
rgb_shift)
dest = get_temp( p );
else
- dest = make_ureg(PROGRAM_OUTPUT, FRAG_RESULT_COLR);
+ dest = make_ureg(PROGRAM_OUTPUT, FRAG_RESULT_COLOR);
/* Emit the RGB and A combine ops
*/
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);
+ GLuint texTarget = p->state->unit[unit].source_index;
+ struct ureg texcoord;
struct ureg tmp = get_tex_temp( p );
- if (dim == TEXTURE_UNKNOWN_INDEX)
+ 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];
+ }
+
+ if (texTarget == TEXTURE_UNKNOWN_INDEX)
program_error(p, "TexSrcBit");
/* 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, dim, texcoord );
- if (p->state->unit[unit].shadow)
- p->program->Base.ShadowSamplers |= 1 << unit;
+ unit, texTarget, shadow,
+ texcoord );
p->program->Base.SamplersUsed |= (1 << unit);
/* This identity mapping should already be in place
break;
default:
+ /* not a texture src - do nothing */
break;
}
GLuint i;
for (i = 0; i < key->unit[unit].NumArgsRGB; i++) {
- load_texenv_source( p, key->unit[unit].OptRGB[i].Source, unit);
+ load_texenv_source( p, key->unit[unit].OptRGB[i].Source, unit );
}
for (i = 0; i < key->unit[unit].NumArgsA; i++) {
return GL_TRUE;
}
+/**
+ * Generate instructions for loading bump map textures.
+ */
+static GLboolean
+load_texunit_bumpmap( struct texenv_fragment_program *p, int unit )
+{
+ 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
*/
p.program->Base.Instructions = instBuffer;
p.program->Base.Target = GL_FRAGMENT_PROGRAM_ARB;
- p.program->Base.NumTexIndirections = 1; /* correct? */
+ p.program->Base.NumTexIndirections = 1;
p.program->Base.NumTexInstructions = 0;
p.program->Base.NumAluInstructions = 0;
p.program->Base.String = NULL;
p.program->Base.Parameters = _mesa_new_parameter_list();
p.program->Base.InputsRead = 0;
- p.program->Base.OutputsWritten = 1 << FRAG_RESULT_COLR;
+ p.program->Base.OutputsWritten = 1 << FRAG_RESULT_COLOR;
- for (unit = 0; unit < MAX_TEXTURE_UNITS; unit++)
+ 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;
release_temps(ctx, &p);
if (key->enabled_units) {
+ GLboolean needbumpstage = GL_FALSE;
+ /* Zeroth pass - bump map textures first */
+ for (unit = 0 ; unit < ctx->Const.MaxTextureUnits ; 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 < ctx->Const.MaxTextureUnits; unit++)
if (key->enabled_units & (1<<unit)) {
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 );
- out = make_ureg( PROGRAM_OUTPUT, FRAG_RESULT_COLR );
+ out = make_ureg( PROGRAM_OUTPUT, FRAG_RESULT_COLOR );
if (key->separate_specular) {
/* Emit specular add.
return prog;
}
-
-
-
-/**
- * If _MaintainTexEnvProgram is set we'll generate a fragment program that
- * implements the current texture env/combine mode.
- * This function generates that program and puts it into effect.
- */
-void
-_mesa_UpdateTexEnvProgram( GLcontext *ctx )
-{
- const struct gl_fragment_program *prev = ctx->FragmentProgram._Current;
-
- ASSERT(ctx->FragmentProgram._MaintainTexEnvProgram);
-
- /* If a conventional fragment program/shader isn't in effect... */
- if (!ctx->FragmentProgram._Enabled &&
- (!ctx->Shader.CurrentProgram ||
- !ctx->Shader.CurrentProgram->FragmentProgram) )
- {
- struct gl_fragment_program *newProg;
-
- newProg = _mesa_get_fixed_func_fragment_program(ctx);
-
- _mesa_reference_fragprog(ctx, &ctx->FragmentProgram._Current, newProg);
- _mesa_reference_fragprog(ctx, &ctx->FragmentProgram._TexEnvProgram, newProg);
- }
-
- /* Tell the driver about the change. Could define a new target for
- * this?
- */
- if (ctx->FragmentProgram._Current != prev && ctx->Driver.BindProgram) {
- ctx->Driver.BindProgram(ctx, GL_FRAGMENT_PROGRAM_ARB,
- (struct gl_program *) ctx->FragmentProgram._Current);
- }
-}
projects / mesa.git / blobdiff