Mesa (master): i915: Add support or fallbacks for GLSL fragment shader opcodes.
Eric Anholt
anholt at kemper.freedesktop.org
Thu Oct 1 22:08:05 UTC 2009
Module: Mesa
Branch: master
Commit: 67f4d626d39f2c340fa1632d3e4344c547301508
URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=67f4d626d39f2c340fa1632d3e4344c547301508
Author: Eric Anholt <eric at anholt.net>
Date: Wed Jul 29 20:44:39 2009 -0700
i915: Add support or fallbacks for GLSL fragment shader opcodes.
---
src/mesa/drivers/dri/i915/i915_fragprog.c | 162 ++++++++++++++++++++++++++++-
1 files changed, 158 insertions(+), 4 deletions(-)
diff --git a/src/mesa/drivers/dri/i915/i915_fragprog.c b/src/mesa/drivers/dri/i915/i915_fragprog.c
index 66db7e1..d5659e7 100644
--- a/src/mesa/drivers/dri/i915/i915_fragprog.c
+++ b/src/mesa/drivers/dri/i915/i915_fragprog.c
@@ -366,7 +366,7 @@ upload_program(struct i915_fragment_program *p)
while (1) {
GLuint src0, src1, src2, flags;
- GLuint tmp = 0, consts0 = 0, consts1 = 0;
+ GLuint tmp = 0, dst, consts0 = 0, consts1 = 0;
switch (inst->Opcode) {
case OPCODE_ABS:
@@ -518,6 +518,10 @@ upload_program(struct i915_fragment_program *p)
EMIT_1ARG_ARITH(A0_FLR);
break;
+ case OPCODE_TRUNC:
+ EMIT_1ARG_ARITH(A0_TRC);
+ break;
+
case OPCODE_FRC:
EMIT_1ARG_ARITH(A0_FRC);
break;
@@ -531,6 +535,22 @@ upload_program(struct i915_fragment_program *p)
0, src0, T0_TEXKILL);
break;
+ case OPCODE_KIL_NV:
+ if (inst->DstReg.CondMask == COND_TR) {
+ tmp = i915_get_utemp(p);
+
+ i915_emit_texld(p, get_live_regs(p, inst),
+ tmp, A0_DEST_CHANNEL_ALL,
+ 0, /* use a dummy dest reg */
+ swizzle(tmp, ONE, ONE, ONE, ONE), /* always */
+ T0_TEXKILL);
+ } else {
+ p->error = 1;
+ i915_program_error(p, "Unsupported KIL_NV condition code: %d",
+ inst->DstReg.CondMask);
+ }
+ break;
+
case OPCODE_LG2:
src0 = src_vector(p, &inst->SrcReg[0], program);
@@ -630,6 +650,20 @@ upload_program(struct i915_fragment_program *p)
EMIT_2ARG_ARITH(A0_MUL);
break;
+ case OPCODE_NOISE1:
+ case OPCODE_NOISE2:
+ case OPCODE_NOISE3:
+ case OPCODE_NOISE4:
+ /* Don't implement noise because we just don't have the instructions
+ * to spare. We aren't the first vendor to do so.
+ */
+ i915_program_error(p, "Stubbed-out noise functions");
+ i915_emit_arith(p,
+ A0_MOV,
+ get_result_vector(p, inst),
+ get_result_flags(inst), 0,
+ swizzle(src0, ZERO, ZERO, ZERO, ZERO), 0, 0);
+
case OPCODE_POW:
src0 = src_vector(p, &inst->SrcReg[0], program);
src1 = src_vector(p, &inst->SrcReg[1], program);
@@ -736,9 +770,38 @@ upload_program(struct i915_fragment_program *p)
}
break;
- case OPCODE_SGE:
- EMIT_2ARG_ARITH(A0_SGE);
- break;
+ case OPCODE_SEQ:
+ tmp = i915_get_utemp(p);
+ flags = get_result_flags(inst);
+ dst = get_result_vector(p, inst);
+
+ /* dst = src1 >= src2 */
+ i915_emit_arith(p,
+ A0_SGE,
+ dst,
+ flags, 0,
+ src_vector(p, &inst->SrcReg[0], program),
+ src_vector(p, &inst->SrcReg[1], program),
+ 0);
+ /* tmp = src1 <= src2 */
+ i915_emit_arith(p,
+ A0_SGE,
+ tmp,
+ flags, 0,
+ negate(src_vector(p, &inst->SrcReg[0], program),
+ 1, 1, 1, 1),
+ negate(src_vector(p, &inst->SrcReg[1], program),
+ 1, 1, 1, 1),
+ 0);
+ /* dst = tmp && dst */
+ i915_emit_arith(p,
+ A0_MUL,
+ dst,
+ flags, 0,
+ dst,
+ tmp,
+ 0);
+ break;
case OPCODE_SIN:
src0 = src_vector(p, &inst->SrcReg[0], program);
@@ -824,10 +887,71 @@ upload_program(struct i915_fragment_program *p)
break;
+ case OPCODE_SGE:
+ EMIT_2ARG_ARITH(A0_SGE);
+ break;
+
+ case OPCODE_SGT:
+ i915_emit_arith(p,
+ A0_SLT,
+ get_result_vector( p, inst ),
+ get_result_flags( inst ), 0,
+ negate(src_vector( p, &inst->SrcReg[0], program),
+ 1, 1, 1, 1),
+ negate(src_vector( p, &inst->SrcReg[1], program),
+ 1, 1, 1, 1),
+ 0);
+ break;
+
+ case OPCODE_SLE:
+ i915_emit_arith(p,
+ A0_SGE,
+ get_result_vector( p, inst ),
+ get_result_flags( inst ), 0,
+ negate(src_vector( p, &inst->SrcReg[0], program),
+ 1, 1, 1, 1),
+ negate(src_vector( p, &inst->SrcReg[1], program),
+ 1, 1, 1, 1),
+ 0);
+ break;
+
case OPCODE_SLT:
EMIT_2ARG_ARITH(A0_SLT);
break;
+ case OPCODE_SNE:
+ tmp = i915_get_utemp(p);
+ flags = get_result_flags(inst);
+ dst = get_result_vector(p, inst);
+
+ /* dst = src1 < src2 */
+ i915_emit_arith(p,
+ A0_SLT,
+ dst,
+ flags, 0,
+ src_vector(p, &inst->SrcReg[0], program),
+ src_vector(p, &inst->SrcReg[1], program),
+ 0);
+ /* tmp = src1 > src2 */
+ i915_emit_arith(p,
+ A0_SLT,
+ tmp,
+ flags, 0,
+ negate(src_vector(p, &inst->SrcReg[0], program),
+ 1, 1, 1, 1),
+ negate(src_vector(p, &inst->SrcReg[1], program),
+ 1, 1, 1, 1),
+ 0);
+ /* dst = tmp || dst */
+ i915_emit_arith(p,
+ A0_ADD,
+ dst,
+ flags | A0_DEST_SATURATE, 0,
+ dst,
+ tmp,
+ 0);
+ break;
+
case OPCODE_SUB:
src0 = src_vector(p, &inst->SrcReg[0], program);
src1 = src_vector(p, &inst->SrcReg[1], program);
@@ -884,6 +1008,36 @@ upload_program(struct i915_fragment_program *p)
case OPCODE_END:
return;
+ case OPCODE_BGNLOOP:
+ case OPCODE_BGNSUB:
+ case OPCODE_BRA:
+ case OPCODE_BRK:
+ case OPCODE_CAL:
+ case OPCODE_CONT:
+ case OPCODE_DDX:
+ case OPCODE_DDY:
+ case OPCODE_ELSE:
+ case OPCODE_ENDIF:
+ case OPCODE_ENDLOOP:
+ case OPCODE_ENDSUB:
+ case OPCODE_IF:
+ case OPCODE_RET:
+ p->error = 1;
+ i915_program_error(p, "Unsupported opcode: %s",
+ _mesa_opcode_string(inst->Opcode));
+ return;
+
+ case OPCODE_EXP:
+ case OPCODE_LOG:
+ /* These opcodes are claimed as GLSL, NV_vp, and ARB_vp in
+ * prog_instruction.h, but apparently GLSL doesn't ever emit them.
+ * Instead, it translates to EX2 or LG2.
+ */
+ case OPCODE_TXD:
+ case OPCODE_TXL:
+ /* These opcodes are claimed by GLSL in prog_instruction.h, but
+ * only NV_vp/fp appears to emit them.
+ */
default:
i915_program_error(p, "bad opcode: %s",
_mesa_opcode_string(inst->Opcode));
More information about the mesa-commit
mailing list