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Diffstat (limited to 'src/mesa/main/texenvprogram.c')
-rw-r--r--src/mesa/main/texenvprogram.c99
1 files changed, 90 insertions, 9 deletions
diff --git a/src/mesa/main/texenvprogram.c b/src/mesa/main/texenvprogram.c
index 51c13a563d6..3fbd119b347 100644
--- a/src/mesa/main/texenvprogram.c
+++ b/src/mesa/main/texenvprogram.c
@@ -94,11 +94,11 @@ struct state_key {
GLuint ScaleShiftA:2;
GLuint NumArgsRGB:3;
- GLuint ModeRGB:4;
+ GLuint ModeRGB:5;
struct mode_opt OptRGB[MAX_TERMS];
GLuint NumArgsA:3;
- GLuint ModeA:4;
+ GLuint ModeA:5;
struct mode_opt OptA[MAX_TERMS];
} unit[8];
};
@@ -194,7 +194,8 @@ static GLuint translate_source( GLenum src )
#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_UNKNOWN 15
+#define MODE_BUMP_ENVMAP_ATI 15 /* special */
+#define MODE_UNKNOWN 16
/**
* Translate GL combiner state into a MODE_x value
@@ -223,6 +224,7 @@ static GLuint translate_mode( GLenum envMode, GLenum mode )
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;
@@ -383,7 +385,7 @@ static void make_state_key( GLcontext *ctx, struct state_key *key )
translate_mode(texUnit->EnvMode, texUnit->_CurrentCombine->ModeRGB);
key->unit[i].ModeA =
translate_mode(texUnit->EnvMode, texUnit->_CurrentCombine->ModeA);
-
+
key->unit[i].ScaleShiftRGB = texUnit->_CurrentCombine->ScaleShiftRGB;
key->unit[i].ScaleShiftA = texUnit->_CurrentCombine->ScaleShiftA;
@@ -397,8 +399,18 @@ static void make_state_key( GLcontext *ctx, struct state_key *key )
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) {
key->separate_specular = 1;
inputs_referenced |= FRAG_BIT_COL1;
@@ -464,6 +476,11 @@ struct texenv_fragment_program {
* 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.
*/
@@ -756,6 +773,7 @@ static struct ureg emit_texld( struct texenv_fragment_program *p,
*/
reserve_temp(p, dest);
+#if 0
/* Is this a texture indirection?
*/
if ((coord.file == PROGRAM_TEMPORARY &&
@@ -767,6 +785,7 @@ static struct ureg emit_texld( struct texenv_fragment_program *p,
p->alu_temps = 0;
assert(0); /* KW: texture env crossbar */
}
+#endif
return dest;
}
@@ -1052,6 +1071,10 @@ static struct ureg emit_combine( struct texenv_fragment_program *p,
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];
@@ -1074,6 +1097,10 @@ emit_texenv(struct texenv_fragment_program *p, GLuint unit)
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:
@@ -1163,9 +1190,17 @@ static void load_texture( struct texenv_fragment_program *p, GLuint unit )
{
if (is_undef(p->src_texture[unit])) {
GLuint texTarget = p->state->unit[unit].source_index;
- struct ureg texcoord = register_input(p, FRAG_ATTRIB_TEX0+unit);
+ 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];
+ }
+
if (texTarget == TEXTURE_UNKNOWN_INDEX)
program_error(p, "TexSrcBit");
@@ -1233,7 +1268,7 @@ load_texunit_sources( struct texenv_fragment_program *p, int unit )
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++) {
@@ -1243,6 +1278,40 @@ load_texunit_sources( struct texenv_fragment_program *p, int unit )
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
@@ -1267,7 +1336,7 @@ create_new_program(GLcontext *ctx, struct state_key *key,
*/
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;
@@ -1280,8 +1349,10 @@ create_new_program(GLcontext *ctx, struct state_key *key,
p.program->Base.InputsRead = 0;
p.program->Base.OutputsWritten = 1 << FRAG_RESULT_COLOR;
- for (unit = 0; unit < ctx->Const.MaxTextureUnits; 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;
@@ -1292,6 +1363,16 @@ create_new_program(GLcontext *ctx, struct state_key *key,
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:
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-19 05:02:41 +0000