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path: root/src/mesa/swrast/s_nvfragprog.c
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Diffstat (limited to 'src/mesa/swrast/s_nvfragprog.c')
-rw-r--r--src/mesa/swrast/s_nvfragprog.c232
1 files changed, 128 insertions, 104 deletions
diff --git a/src/mesa/swrast/s_nvfragprog.c b/src/mesa/swrast/s_nvfragprog.c
index dfca960005..7a6785b1d2 100644
--- a/src/mesa/swrast/s_nvfragprog.c
+++ b/src/mesa/swrast/s_nvfragprog.c
@@ -41,7 +41,10 @@
#include "s_span.h"
-/* if 1, print some debugging info */
+/* See comments below for info about this */
+#define LAMBDA_ZERO 1
+
+/* debug predicate */
#define DEBUG_FRAG 0
@@ -178,8 +181,8 @@ get_register_pointer( GLcontext *ctx,
ASSERT(source->Index < (GLint) program->Base.Parameters->NumParameters);
return program->Base.Parameters->ParameterValues[source->Index];
default:
- _mesa_problem(ctx, "Invalid input register file %d in fetch_vector4",
- source->File);
+ _mesa_problem(ctx, "Invalid input register file %d in fp "
+ "get_register_pointer", source->File);
return NULL;
}
}
@@ -458,7 +461,7 @@ store_vector4( const struct prog_instruction *inst,
return;
}
-#if DEBUG_FRAG
+#if 0
if (value[0] > 1.0e10 ||
IS_INF_OR_NAN(value[0]) ||
IS_INF_OR_NAN(value[1]) ||
@@ -646,9 +649,9 @@ execute_program( GLcontext *ctx,
{
GLuint pc;
-#if DEBUG_FRAG
- printf("execute fragment program --------------------\n");
-#endif
+ if (DEBUG_FRAG) {
+ printf("execute fragment program --------------------\n");
+ }
for (pc = 0; pc < maxInst; pc++) {
const struct prog_instruction *inst = program->Base.Instructions + pc;
@@ -660,6 +663,10 @@ execute_program( GLcontext *ctx,
ctx->FragmentProgram.CallbackData);
}
+ if (DEBUG_FRAG) {
+ _mesa_print_instruction(inst);
+ }
+
switch (inst->Opcode) {
case OPCODE_ABS:
{
@@ -682,6 +689,12 @@ execute_program( GLcontext *ctx,
result[2] = a[2] + b[2];
result[3] = a[3] + b[3];
store_vector4( inst, machine, result );
+ if (DEBUG_FRAG) {
+ printf("ADD (%g %g %g %g) = (%g %g %g %g) + (%g %g %g %g)\n",
+ result[0], result[1], result[2], result[3],
+ a[0], a[1], a[2], a[3],
+ b[0], b[1], b[2], b[3]);
+ }
}
break;
case OPCODE_CMP:
@@ -758,10 +771,10 @@ execute_program( GLcontext *ctx,
fetch_vector4( ctx, &inst->SrcReg[1], machine, program, b );
result[0] = result[1] = result[2] = result[3] = DOT3(a, b);
store_vector4( inst, machine, result );
-#if DEBUG_FRAG
- printf("DP3 %g = (%g %g %g) . (%g %g %g)\n",
- result[0], a[0], a[1], a[2], b[0], b[1], b[2]);
-#endif
+ if (DEBUG_FRAG) {
+ printf("DP3 %g = (%g %g %g) . (%g %g %g)\n",
+ result[0], a[0], a[1], a[2], b[0], b[1], b[2]);
+ }
}
break;
case OPCODE_DP4:
@@ -771,10 +784,11 @@ execute_program( GLcontext *ctx,
fetch_vector4( ctx, &inst->SrcReg[1], machine, program, b );
result[0] = result[1] = result[2] = result[3] = DOT4(a,b);
store_vector4( inst, machine, result );
-#if DEBUG_FRAG
- printf("DP4 %g = (%g, %g %g %g) . (%g, %g %g %g)\n",
- result[0], a[0], a[1], a[2], a[3], b[0], b[1], b[2], b[3]);
-#endif
+ if (DEBUG_FRAG) {
+ printf("DP4 %g = (%g, %g %g %g) . (%g, %g %g %g)\n",
+ result[0], a[0], a[1], a[2], a[3],
+ b[0], b[1], b[2], b[3]);
+ }
}
break;
case OPCODE_DPH:
@@ -882,6 +896,11 @@ execute_program( GLcontext *ctx,
}
result[3] = 1.0F;
store_vector4( inst, machine, result );
+ if (DEBUG_FRAG) {
+ printf("LIT (%g %g %g %g) : (%g %g %g %g)\n",
+ result[0], result[1], result[2], result[3],
+ a[0], a[1], a[2], a[3]);
+ }
}
break;
case OPCODE_LRP:
@@ -895,14 +914,14 @@ execute_program( GLcontext *ctx,
result[2] = a[2] * b[2] + (1.0F - a[2]) * c[2];
result[3] = a[3] * b[3] + (1.0F - a[3]) * c[3];
store_vector4( inst, machine, result );
-#if DEBUG_FRAG
- printf("LRP (%g %g %g %g) = (%g %g %g %g), "
- "(%g %g %g %g), (%g %g %g %g)\n",
- result[0], result[1], result[2], result[3],
- a[0], a[1], a[2], a[3],
- b[0], b[1], b[2], b[3],
- c[0], c[1], c[2], c[3]);
-#endif
+ if (DEBUG_FRAG) {
+ printf("LRP (%g %g %g %g) = (%g %g %g %g), "
+ "(%g %g %g %g), (%g %g %g %g)\n",
+ result[0], result[1], result[2], result[3],
+ a[0], a[1], a[2], a[3],
+ b[0], b[1], b[2], b[3],
+ c[0], c[1], c[2], c[3]);
+ }
}
break;
case OPCODE_MAD:
@@ -916,6 +935,14 @@ execute_program( GLcontext *ctx,
result[2] = a[2] * b[2] + c[2];
result[3] = a[3] * b[3] + c[3];
store_vector4( inst, machine, result );
+ if (DEBUG_FRAG) {
+ printf("MAD (%g %g %g %g) = (%g %g %g %g) * "
+ "(%g %g %g %g) + (%g %g %g %g)\n",
+ result[0], result[1], result[2], result[3],
+ a[0], a[1], a[2], a[3],
+ b[0], b[1], b[2], b[3],
+ c[0], c[1], c[2], c[3]);
+ }
}
break;
case OPCODE_MAX:
@@ -928,12 +955,12 @@ execute_program( GLcontext *ctx,
result[2] = MAX2(a[2], b[2]);
result[3] = MAX2(a[3], b[3]);
store_vector4( inst, machine, result );
-#if DEBUG_FRAG
- printf("MAX (%g %g %g %g) = (%g %g %g %g), (%g %g %g %g)\n",
- result[0], result[1], result[2], result[3],
- a[0], a[1], a[2], a[3],
- b[0], b[1], b[2], b[3]);
-#endif
+ if (DEBUG_FRAG) {
+ printf("MAX (%g %g %g %g) = (%g %g %g %g), (%g %g %g %g)\n",
+ result[0], result[1], result[2], result[3],
+ a[0], a[1], a[2], a[3],
+ b[0], b[1], b[2], b[3]);
+ }
}
break;
case OPCODE_MIN:
@@ -953,10 +980,10 @@ execute_program( GLcontext *ctx,
GLfloat result[4];
fetch_vector4( ctx, &inst->SrcReg[0], machine, program, result );
store_vector4( inst, machine, result );
-#if DEBUG_FRAG
- printf("MOV (%g %g %g %g)\n",
- result[0], result[1], result[2], result[3]);
-#endif
+ if (DEBUG_FRAG) {
+ printf("MOV (%g %g %g %g)\n",
+ result[0], result[1], result[2], result[3]);
+ }
}
break;
case OPCODE_MUL:
@@ -969,12 +996,12 @@ execute_program( GLcontext *ctx,
result[2] = a[2] * b[2];
result[3] = a[3] * b[3];
store_vector4( inst, machine, result );
-#if DEBUG_FRAG
- printf("MUL (%g %g %g %g) = (%g %g %g %g) * (%g %g %g %g)\n",
- result[0], result[1], result[2], result[3],
- a[0], a[1], a[2], a[3],
- b[0], b[1], b[2], b[3]);
-#endif
+ if (DEBUG_FRAG) {
+ printf("MUL (%g %g %g %g) = (%g %g %g %g) * (%g %g %g %g)\n",
+ result[0], result[1], result[2], result[3],
+ a[0], a[1], a[2], a[3],
+ b[0], b[1], b[2], b[3]);
+ }
}
break;
case OPCODE_PK2H: /* pack two 16-bit floats in one 32-bit float */
@@ -1056,12 +1083,12 @@ execute_program( GLcontext *ctx,
{
GLfloat a[4], result[4];
fetch_vector1( ctx, &inst->SrcReg[0], machine, program, a );
-#if DEBUG_FRAG
- if (a[0] == 0)
- printf("RCP(0)\n");
- else if (IS_INF_OR_NAN(a[0]))
- printf("RCP(inf)\n");
-#endif
+ if (DEBUG_FRAG) {
+ if (a[0] == 0)
+ printf("RCP(0)\n");
+ else if (IS_INF_OR_NAN(a[0]))
+ printf("RCP(inf)\n");
+ }
result[0] = result[1] = result[2] = result[3] = 1.0F / a[0];
store_vector4( inst, machine, result );
}
@@ -1087,9 +1114,9 @@ execute_program( GLcontext *ctx,
a[0] = FABSF(a[0]);
result[0] = result[1] = result[2] = result[3] = INV_SQRTF(a[0]);
store_vector4( inst, machine, result );
-#if DEBUG_FRAG
- printf("RSQ %g = 1/sqrt(|%g|)\n", result[0], a[0]);
-#endif
+ if (DEBUG_FRAG) {
+ printf("RSQ %g = 1/sqrt(|%g|)\n", result[0], a[0]);
+ }
}
break;
case OPCODE_SCS: /* sine and cos */
@@ -1206,11 +1233,11 @@ execute_program( GLcontext *ctx,
result[2] = a[2] - b[2];
result[3] = a[3] - b[3];
store_vector4( inst, machine, result );
-#if DEBUG_FRAG
- printf("SUB (%g %g %g %g) = (%g %g %g %g) - (%g %g %g %g)\n",
- result[0], result[1], result[2], result[3],
- a[0], a[1], a[2], a[3], b[0], b[1], b[2], b[3]);
-#endif
+ if (DEBUG_FRAG) {
+ printf("SUB (%g %g %g %g) = (%g %g %g %g) - (%g %g %g %g)\n",
+ result[0], result[1], result[2], result[3],
+ a[0], a[1], a[2], a[3], b[0], b[1], b[2], b[3]);
+ }
}
break;
case OPCODE_SWZ: /* extended swizzle */
@@ -1240,44 +1267,47 @@ execute_program( GLcontext *ctx,
case OPCODE_TEX: /* Both ARB and NV frag prog */
/* Texel lookup */
{
- GLfloat texcoord[4], color[4];
- fetch_vector4( ctx, &inst->SrcReg[0], machine, program, texcoord );
- /* Note: we pass 0 for LOD. The ARB extension requires it
- * while the NV extension says it's implementation dependant.
+ /* Note: only use the precomputed lambda value when we're
+ * sampling texture unit [K] with texcoord[K].
+ * Otherwise, the lambda value may have no relation to the
+ * instruction's texcoord or texture image. Using the wrong
+ * lambda is usually bad news.
+ * The rest of the time, just use zero (until we get a more
+ * sophisticated way of computing lambda).
*/
- /* KW: Previously lambda was passed as zero, but I
- * believe this is incorrect, the spec seems to
- * indicate rather that lambda should not be
- * changed/biased, unlike TXB where texcoord[3] is
- * added to the lambda calculations. The lambda should
- * still be calculated normally for TEX & TXP though,
- * not set to zero. Otherwise it's very difficult to
- * implement normal GL semantics through the fragment
- * shader.
- */
- fetch_texel( ctx, texcoord,
- span->array->lambda[inst->TexSrcUnit][column],
- inst->TexSrcUnit, color );
-#if DEBUG_FRAG
- if (color[3])
- printf("color[3] = %f\n", color[3]);
-#endif
+ GLfloat coord[4], color[4], lambda;
+ if (inst->SrcReg[0].File == PROGRAM_INPUT &&
+ inst->SrcReg[0].Index == FRAG_ATTRIB_TEX0+inst->TexSrcUnit)
+ lambda = span->array->lambda[inst->TexSrcUnit][column];
+ else
+ lambda = 0.0;
+ fetch_vector4(ctx, &inst->SrcReg[0], machine, program, coord);
+ fetch_texel( ctx, coord, lambda, inst->TexSrcUnit, color );
+ if (DEBUG_FRAG) {
+ printf("TEX (%g, %g, %g, %g) = texture[%d][%g, %g, %g, %g], "
+ "lod %f\n",
+ color[0], color[1], color[2], color[3],
+ inst->TexSrcUnit,
+ coord[0], coord[1], coord[2], coord[3], lambda);
+ }
store_vector4( inst, machine, color );
}
break;
case OPCODE_TXB: /* GL_ARB_fragment_program only */
/* Texel lookup with LOD bias */
{
- GLfloat texcoord[4], color[4], bias, lambda;
-
- fetch_vector4( ctx, &inst->SrcReg[0], machine, program, texcoord );
- /* texcoord[3] is the bias to add to lambda */
+ GLfloat coord[4], color[4], lambda, bias;
+ if (inst->SrcReg[0].File == PROGRAM_INPUT &&
+ inst->SrcReg[0].Index == FRAG_ATTRIB_TEX0+inst->TexSrcUnit)
+ lambda = span->array->lambda[inst->TexSrcUnit][column];
+ else
+ lambda = 0.0;
+ fetch_vector4(ctx, &inst->SrcReg[0], machine, program, coord);
+ /* coord[3] is the bias to add to lambda */
bias = ctx->Texture.Unit[inst->TexSrcUnit].LodBias
+ ctx->Texture.Unit[inst->TexSrcUnit]._Current->LodBias
- + texcoord[3];
- lambda = span->array->lambda[inst->TexSrcUnit][column] + bias;
- fetch_texel( ctx, texcoord, lambda,
- inst->TexSrcUnit, color );
+ + coord[3];
+ fetch_texel(ctx, coord, lambda + bias, inst->TexSrcUnit, color);
store_vector4( inst, machine, color );
}
break;
@@ -1296,8 +1326,13 @@ execute_program( GLcontext *ctx,
case OPCODE_TXP: /* GL_ARB_fragment_program only */
/* Texture lookup w/ projective divide */
{
- GLfloat texcoord[4], color[4];
- fetch_vector4( ctx, &inst->SrcReg[0], machine, program, texcoord );
+ GLfloat texcoord[4], color[4], lambda;
+ if (inst->SrcReg[0].File == PROGRAM_INPUT &&
+ inst->SrcReg[0].Index == FRAG_ATTRIB_TEX0+inst->TexSrcUnit)
+ lambda = span->array->lambda[inst->TexSrcUnit][column];
+ else
+ lambda = 0.0;
+ fetch_vector4(ctx, &inst->SrcReg[0], machine, program,texcoord);
/* Not so sure about this test - if texcoord[3] is
* zero, we'd probably be fine except for an ASSERT in
* IROUND_POS() which gets triggered by the inf values created.
@@ -1307,34 +1342,27 @@ execute_program( GLcontext *ctx,
texcoord[1] /= texcoord[3];
texcoord[2] /= texcoord[3];
}
- /* KW: Previously lambda was passed as zero, but I
- * believe this is incorrect, the spec seems to
- * indicate rather that lambda should not be
- * changed/biased, unlike TXB where texcoord[3] is
- * added to the lambda calculations. The lambda should
- * still be calculated normally for TEX & TXP though,
- * not set to zero.
- */
- fetch_texel( ctx, texcoord,
- span->array->lambda[inst->TexSrcUnit][column],
- inst->TexSrcUnit, color );
+ fetch_texel( ctx, texcoord, lambda, inst->TexSrcUnit, color );
store_vector4( inst, machine, color );
}
break;
case OPCODE_TXP_NV: /* GL_NV_fragment_program only */
/* Texture lookup w/ projective divide */
{
- GLfloat texcoord[4], color[4];
- fetch_vector4( ctx, &inst->SrcReg[0], machine, program, texcoord );
+ GLfloat texcoord[4], color[4], lambda;
+ if (inst->SrcReg[0].File == PROGRAM_INPUT &&
+ inst->SrcReg[0].Index == FRAG_ATTRIB_TEX0+inst->TexSrcUnit)
+ lambda = span->array->lambda[inst->TexSrcUnit][column];
+ else
+ lambda = 0.0;
+ fetch_vector4(ctx, &inst->SrcReg[0], machine, program,texcoord);
if (inst->TexSrcTarget != TEXTURE_CUBE_INDEX &&
texcoord[3] != 0.0) {
texcoord[0] /= texcoord[3];
texcoord[1] /= texcoord[3];
texcoord[2] /= texcoord[3];
}
- fetch_texel( ctx, texcoord,
- span->array->lambda[inst->TexSrcUnit][column],
- inst->TexSrcUnit, color );
+ fetch_texel( ctx, texcoord, lambda, inst->TexSrcUnit, color );
store_vector4( inst, machine, color );
}
break;
@@ -1572,10 +1600,6 @@ _swrast_exec_fragment_program( GLcontext *ctx, SWspan *span )
ctx->_CurrentProgram = GL_FRAGMENT_PROGRAM_ARB; /* or NV, doesn't matter */
- if (program->Base.Parameters) {
- _mesa_load_state_parameters(ctx, program->Base.Parameters);
- }
-
run_program(ctx, span, 0, span->end);
if (program->Base.OutputsWritten & (1 << FRAG_RESULT_DEPR)) {
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-14 17:41:18 +0000