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i915: Keith Whitwell's swizzling TEX patch. fix #8283

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Xiang, Haihao
2008-01-07 14:08:36 +08:00
parent 601a6b872c
commit 3369cd9a6f
4 changed files with 82 additions and 12 deletions
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51
src/mesa/drivers/dri/i915/i915_fragprog.c
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@@ -231,7 +231,7 @@ do { \
GLuint coord = src_vector( p, &inst->SrcReg[0], program); \
/* Texel lookup */ \
\
i915_emit_texld( p, \
i915_emit_texld( p, get_live_regs(p, inst), \
get_result_vector( p, inst ), \
get_result_flags( inst ), \
sampler, \
@@ -254,6 +254,43 @@ do { \
#define EMIT_2ARG_ARITH( OP ) EMIT_ARITH( OP, 2 )
#define EMIT_3ARG_ARITH( OP ) EMIT_ARITH( OP, 3 )
/*
* TODO: consider moving this into core
*/
static void calc_live_regs( struct i915_fragment_program *p )
{
const struct gl_fragment_program *program = p->ctx->FragmentProgram._Current;
GLuint regsUsed = 0xffff0000;
GLint i;
for (i = program->Base.NumInstructions - 1; i >= 0; i--) {
struct prog_instruction *inst = &program->Base.Instructions[i];
int opArgs = _mesa_num_inst_src_regs(inst->Opcode);
int a;
/* Register is written to: unmark as live for this and preceeding ops */
if (inst->DstReg.File == PROGRAM_TEMPORARY)
regsUsed &= ~(1 << inst->DstReg.Index);
for (a = 0; a < opArgs; a++) {
/* Register is read from: mark as live for this and preceeding ops */
if (inst->SrcReg[a].File == PROGRAM_TEMPORARY)
regsUsed |= 1 << inst->SrcReg[a].Index;
}
p->usedRegs[i] = regsUsed;
}
}
static GLuint get_live_regs( struct i915_fragment_program *p,
const struct prog_instruction *inst )
{
const struct gl_fragment_program *program = p->ctx->FragmentProgram._Current;
GLuint nr = inst - program->Base.Instructions;
return p->usedRegs[nr];
}
/* Possible concerns:
*
@@ -289,6 +326,15 @@ upload_program(struct i915_fragment_program *p)
return;
}
if (program->Base.NumInstructions > I915_MAX_INSN) {
i915_program_error( p, "Exceeded max instructions" );
return;
}
/* Not always needed:
*/
calc_live_regs(p);
while (1) {
GLuint src0, src1, src2, flags;
GLuint tmp = 0;
@@ -423,7 +469,8 @@ upload_program(struct i915_fragment_program *p)
src0 = src_vector(p, &inst->SrcReg[0], program);
tmp = i915_get_utemp(p);
i915_emit_texld(p, tmp, A0_DEST_CHANNEL_ALL, /* use a dummy dest reg */
i915_emit_texld(p, get_live_regs(p, inst),
tmp, A0_DEST_CHANNEL_ALL, /* use a dummy dest reg */
0, src0, T0_TEXKILL);
break;