summaryrefslogtreecommitdiff
path: root/src/mesa
diff options
context:
space:
mode:
Diffstat (limited to 'src/mesa')
-rw-r--r--src/mesa/swrast/s_nvfragprog.c54
1 files changed, 24 insertions, 30 deletions
diff --git a/src/mesa/swrast/s_nvfragprog.c b/src/mesa/swrast/s_nvfragprog.c
index 01fa221fc6..e55fe5c851 100644
--- a/src/mesa/swrast/s_nvfragprog.c
+++ b/src/mesa/swrast/s_nvfragprog.c
@@ -699,7 +699,8 @@ execute_program( GLcontext *ctx,
{
GLfloat a[4], result[4];
fetch_vector1( ctx, &inst->SrcReg[0], machine, program, a );
- result[0] = result[1] = result[2] = result[3] = (GLfloat)_mesa_cos(a[0]);
+ result[0] = result[1] = result[2] = result[3]
+ = (GLfloat) _mesa_cos(a[0]);
store_vector4( inst, machine, result );
}
break;
@@ -753,8 +754,7 @@ execute_program( GLcontext *ctx,
GLfloat a[4], b[4], result[4];
fetch_vector4( ctx, &inst->SrcReg[0], machine, program, a );
fetch_vector4( ctx, &inst->SrcReg[1], machine, program, b );
- result[0] = result[1] = result[2] = result[3] =
- a[0] * b[0] + a[1] * b[1] + a[2] * b[2];
+ 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",
@@ -767,8 +767,7 @@ execute_program( GLcontext *ctx,
GLfloat a[4], b[4], result[4];
fetch_vector4( ctx, &inst->SrcReg[0], machine, program, a );
fetch_vector4( ctx, &inst->SrcReg[1], machine, program, b );
- result[0] = result[1] = result[2] = result[3] =
- a[0] * b[0] + a[1] * b[1] + a[2] * b[2] + a[3] * b[3];
+ 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",
@@ -854,8 +853,7 @@ execute_program( GLcontext *ctx,
{
GLfloat a[4], result[4];
fetch_vector1( ctx, &inst->SrcReg[0], machine, program, a );
- result[0] = result[1] = result[2] = result[3]
- = LOG2(a[0]);
+ result[0] = result[1] = result[2] = result[3] = LOG2(a[0]);
store_vector4( inst, machine, result );
}
break;
@@ -1054,25 +1052,20 @@ execute_program( GLcontext *ctx,
else if (IS_INF_OR_NAN(a[0]))
printf("RCP(inf)\n");
#endif
- result[0] = result[1] = result[2] = result[3]
- = 1.0F / a[0];
+ result[0] = result[1] = result[2] = result[3] = 1.0F / a[0];
store_vector4( inst, machine, result );
}
break;
- case OPCODE_RFL:
+ case OPCODE_RFL: /* reflection vector */
{
- GLfloat axis[4], dir[4], result[4], tmp[4];
+ GLfloat axis[4], dir[4], result[4], tmpX, tmpW;
fetch_vector4( ctx, &inst->SrcReg[0], machine, program, axis );
fetch_vector4( ctx, &inst->SrcReg[1], machine, program, dir );
- tmp[3] = axis[0] * axis[0]
- + axis[1] * axis[1]
- + axis[2] * axis[2];
- tmp[0] = (2.0F * (axis[0] * dir[0] +
- axis[1] * dir[1] +
- axis[2] * dir[2])) / tmp[3];
- result[0] = tmp[0] * axis[0] - dir[0];
- result[1] = tmp[0] * axis[1] - dir[1];
- result[2] = tmp[0] * axis[2] - dir[2];
+ tmpW = DOT3(axis, axis);
+ tmpX = (2.0F * DOT3(axis, dir)) / tmpW;
+ result[0] = tmpX * axis[0] - dir[0];
+ result[1] = tmpX * axis[1] - dir[1];
+ result[2] = tmpX * axis[2] - dir[2];
/* result[3] is never written! XXX enforce in parser! */
store_vector4( inst, machine, result );
}
@@ -1146,8 +1139,8 @@ execute_program( GLcontext *ctx,
{
GLfloat a[4], result[4];
fetch_vector1( ctx, &inst->SrcReg[0], machine, program, a );
- result[0] = result[1] = result[2] =
- result[3] = (GLfloat)_mesa_sin(a[0]);
+ result[0] = result[1] = result[2] = result[3]
+ = (GLfloat) _mesa_sin(a[0]);
store_vector4( inst, machine, result );
}
break;
@@ -1205,23 +1198,24 @@ execute_program( GLcontext *ctx,
store_vector4( inst, machine, result );
}
break;
- case OPCODE_SWZ:
+ case OPCODE_SWZ: /* extended swizzle */
{
const struct prog_src_register *source = &inst->SrcReg[0];
const GLfloat *src = get_register_pointer(ctx, source,
machine, program);
GLfloat result[4];
GLuint i;
-
- /* do extended swizzling here */
for (i = 0; i < 4; i++) {
- if (GET_SWZ(source->Swizzle, i) == SWIZZLE_ZERO)
+ const GLuint swz = GET_SWZ(source->Swizzle, i);
+ if (swz == SWIZZLE_ZERO)
result[i] = 0.0;
- else if (GET_SWZ(source->Swizzle, i) == SWIZZLE_ONE)
+ else if (swz == SWIZZLE_ONE)
result[i] = 1.0;
- else
- result[i] = src[GET_SWZ(source->Swizzle, i)];
-
+ else {
+ ASSERT(swz >= 0);
+ ASSERT(swz <= 3);
+ result[i] = src[swz];
+ }
if (source->NegateBase & (1 << i))
result[i] = -result[i];
}