summaryrefslogtreecommitdiffstats
path: root/src/gallium/auxiliary/tgsi/tgsi_lowering.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/gallium/auxiliary/tgsi/tgsi_lowering.c')
-rw-r--r--src/gallium/auxiliary/tgsi/tgsi_lowering.c167
1 files changed, 147 insertions, 20 deletions
diff --git a/src/gallium/auxiliary/tgsi/tgsi_lowering.c b/src/gallium/auxiliary/tgsi/tgsi_lowering.c
index 0ffd855793a..b2dd37e66c8 100644
--- a/src/gallium/auxiliary/tgsi/tgsi_lowering.c
+++ b/src/gallium/auxiliary/tgsi/tgsi_lowering.c
@@ -676,14 +676,19 @@ transform_lit(struct tgsi_transform_context *tctx,
* dst.w = 1.0
*
* ; needs: 1 tmp, imm{1.0}
- * FLR tmpA.x, src.x
+ * if (lowering FLR) {
+ * FRC tmpA.x, src.x
+ * SUB tmpA.x, src.x, tmpA.x
+ * } else {
+ * FLR tmpA.x, src.x
+ * }
* EX2 tmpA.y, src.x
* SUB dst.y, src.x, tmpA.x
* EX2 dst.x, tmpA.x
* MOV dst.z, tmpA.y
* MOV dst.w, imm{1.0}
*/
-#define EXP_GROW (NINST(1) + NINST(1) + NINST(2) + NINST(1) + \
+#define EXP_GROW (NINST(1) + NINST(2) + NINST(1) + NINST(2) + NINST(1) + \
NINST(1)+ NINST(1) - OINST(1))
#define EXP_TMP 1
static void
@@ -696,14 +701,35 @@ transform_exp(struct tgsi_transform_context *tctx,
struct tgsi_full_instruction new_inst;
if (dst->Register.WriteMask & TGSI_WRITEMASK_XY) {
- /* FLR tmpA.x, src.x */
- new_inst = tgsi_default_full_instruction();
- new_inst.Instruction.Opcode = TGSI_OPCODE_FLR;
- new_inst.Instruction.NumDstRegs = 1;
- reg_dst(&new_inst.Dst[0], &ctx->tmp[A].dst, TGSI_WRITEMASK_X);
- new_inst.Instruction.NumSrcRegs = 1;
- reg_src(&new_inst.Src[0], src, SWIZ(X, _, _, _));
- tctx->emit_instruction(tctx, &new_inst);
+ if (ctx->config->lower_FLR) {
+ /* FRC tmpA.x, src.x */
+ new_inst = tgsi_default_full_instruction();
+ new_inst.Instruction.Opcode = TGSI_OPCODE_FRC;
+ new_inst.Instruction.NumDstRegs = 1;
+ reg_dst(&new_inst.Dst[0], &ctx->tmp[A].dst, TGSI_WRITEMASK_X);
+ new_inst.Instruction.NumSrcRegs = 1;
+ reg_src(&new_inst.Src[0], src, SWIZ(X, _, _, _));
+ tctx->emit_instruction(tctx, &new_inst);
+
+ /* SUB tmpA.x, src.x, tmpA.x */
+ new_inst = tgsi_default_full_instruction();
+ new_inst.Instruction.Opcode = TGSI_OPCODE_SUB;
+ new_inst.Instruction.NumDstRegs = 1;
+ reg_dst(&new_inst.Dst[0], &ctx->tmp[A].dst, TGSI_WRITEMASK_X);
+ new_inst.Instruction.NumSrcRegs = 2;
+ reg_src(&new_inst.Src[0], src, SWIZ(X, _, _, _));
+ reg_src(&new_inst.Src[1], &ctx->tmp[A].src, SWIZ(X, _, _, _));
+ tctx->emit_instruction(tctx, &new_inst);
+ } else {
+ /* FLR tmpA.x, src.x */
+ new_inst = tgsi_default_full_instruction();
+ new_inst.Instruction.Opcode = TGSI_OPCODE_FLR;
+ new_inst.Instruction.NumDstRegs = 1;
+ reg_dst(&new_inst.Dst[0], &ctx->tmp[A].dst, TGSI_WRITEMASK_X);
+ new_inst.Instruction.NumSrcRegs = 1;
+ reg_src(&new_inst.Src[0], src, SWIZ(X, _, _, _));
+ tctx->emit_instruction(tctx, &new_inst);
+ }
}
if (dst->Register.WriteMask & TGSI_WRITEMASK_Z) {
@@ -771,14 +797,19 @@ transform_exp(struct tgsi_transform_context *tctx,
*
* ; needs: 1 tmp, imm{1.0}
* LG2 tmpA.x, |src.x|
- * FLR tmpA.y, tmpA.x
+ * if (lowering FLR) {
+ * FRC tmpA.y, tmpA.x
+ * SUB tmpA.y, tmpA.x, tmpA.y
+ * } else {
+ * FLR tmpA.y, tmpA.x
+ * }
* EX2 tmpA.z, tmpA.y
* RCP tmpA.z, tmpA.z
* MUL dst.y, |src.x|, tmpA.z
* MOV dst.xz, tmpA.yx
* MOV dst.w, imm{1.0}
*/
-#define LOG_GROW (NINST(1) + NINST(1) + NINST(1) + NINST(1) + \
+#define LOG_GROW (NINST(1) + NINST(1) + NINST(2) + NINST(1) + NINST(1) + \
NINST(2) + NINST(1) + NINST(1) - OINST(1))
#define LOG_TMP 1
static void
@@ -803,14 +834,35 @@ transform_log(struct tgsi_transform_context *tctx,
}
if (dst->Register.WriteMask & TGSI_WRITEMASK_XY) {
- /* FLR tmpA.y, tmpA.x */
- new_inst = tgsi_default_full_instruction();
- new_inst.Instruction.Opcode = TGSI_OPCODE_FLR;
- new_inst.Instruction.NumDstRegs = 1;
- reg_dst(&new_inst.Dst[0], &ctx->tmp[A].dst, TGSI_WRITEMASK_Y);
- new_inst.Instruction.NumSrcRegs = 1;
- reg_src(&new_inst.Src[0], &ctx->tmp[A].src, SWIZ(_, X, _, _));
- tctx->emit_instruction(tctx, &new_inst);
+ if (ctx->config->lower_FLR) {
+ /* FRC tmpA.y, tmpA.x */
+ new_inst = tgsi_default_full_instruction();
+ new_inst.Instruction.Opcode = TGSI_OPCODE_FRC;
+ new_inst.Instruction.NumDstRegs = 1;
+ reg_dst(&new_inst.Dst[0], &ctx->tmp[A].dst, TGSI_WRITEMASK_Y);
+ new_inst.Instruction.NumSrcRegs = 1;
+ reg_src(&new_inst.Src[0], &ctx->tmp[A].src, SWIZ(_, X, _, _));
+ tctx->emit_instruction(tctx, &new_inst);
+
+ /* SUB tmpA.y, tmpA.x, tmpA.y */
+ new_inst = tgsi_default_full_instruction();
+ new_inst.Instruction.Opcode = TGSI_OPCODE_SUB;
+ new_inst.Instruction.NumDstRegs = 1;
+ reg_dst(&new_inst.Dst[0], &ctx->tmp[A].dst, TGSI_WRITEMASK_Y);
+ new_inst.Instruction.NumSrcRegs = 2;
+ reg_src(&new_inst.Src[0], &ctx->tmp[A].src, SWIZ(_, X, _, _));
+ reg_src(&new_inst.Src[1], &ctx->tmp[A].src, SWIZ(_, Y, _, _));
+ tctx->emit_instruction(tctx, &new_inst);
+ } else {
+ /* FLR tmpA.y, tmpA.x */
+ new_inst = tgsi_default_full_instruction();
+ new_inst.Instruction.Opcode = TGSI_OPCODE_FLR;
+ new_inst.Instruction.NumDstRegs = 1;
+ reg_dst(&new_inst.Dst[0], &ctx->tmp[A].dst, TGSI_WRITEMASK_Y);
+ new_inst.Instruction.NumSrcRegs = 1;
+ reg_src(&new_inst.Src[0], &ctx->tmp[A].src, SWIZ(_, X, _, _));
+ tctx->emit_instruction(tctx, &new_inst);
+ }
}
if (dst->Register.WriteMask & TGSI_WRITEMASK_Y) {
@@ -1005,6 +1057,58 @@ transform_dotp(struct tgsi_transform_context *tctx,
}
}
+/* FLR - floor, CEIL - ceil
+ * ; needs: 1 tmp
+ * if (CEIL) {
+ * FRC tmpA, -src
+ * ADD dst, src, tmpA
+ * } else {
+ * FRC tmpA, src
+ * SUB dst, src, tmpA
+ * }
+ */
+#define FLR_GROW (NINST(1) + NINST(2) - OINST(1))
+#define CEIL_GROW (NINST(1) + NINST(2) - OINST(1))
+#define FLR_TMP 1
+#define CEIL_TMP 1
+static void
+transform_flr_ceil(struct tgsi_transform_context *tctx,
+ struct tgsi_full_instruction *inst)
+{
+ struct tgsi_lowering_context *ctx = tgsi_lowering_context(tctx);
+ struct tgsi_full_dst_register *dst = &inst->Dst[0];
+ struct tgsi_full_src_register *src0 = &inst->Src[0];
+ struct tgsi_full_instruction new_inst;
+ unsigned opcode = inst->Instruction.Opcode;
+
+ if (dst->Register.WriteMask & TGSI_WRITEMASK_XYZW) {
+ /* FLR: FRC tmpA, src CEIL: FRC tmpA, -src */
+ new_inst = tgsi_default_full_instruction();
+ new_inst.Instruction.Opcode = TGSI_OPCODE_FRC;
+ new_inst.Instruction.NumDstRegs = 1;
+ reg_dst(&new_inst.Dst[0], &ctx->tmp[A].dst, TGSI_WRITEMASK_XYZW);
+ new_inst.Instruction.NumSrcRegs = 1;
+ reg_src(&new_inst.Src[0], src0, SWIZ(X, Y, Z, W));
+
+ if (opcode == TGSI_OPCODE_CEIL)
+ new_inst.Src[0].Register.Negate = !new_inst.Src[0].Register.Negate;
+ tctx->emit_instruction(tctx, &new_inst);
+
+ /* FLR: SUB dst, src, tmpA CEIL: ADD dst, src, tmpA */
+ new_inst = tgsi_default_full_instruction();
+ if (opcode == TGSI_OPCODE_CEIL)
+ new_inst.Instruction.Opcode = TGSI_OPCODE_ADD;
+ else
+ new_inst.Instruction.Opcode = TGSI_OPCODE_SUB;
+ new_inst.Instruction.NumDstRegs = 1;
+ reg_dst(&new_inst.Dst[0], dst, TGSI_WRITEMASK_XYZW);
+ new_inst.Instruction.NumSrcRegs = 2;
+ reg_src(&new_inst.Src[0], src0, SWIZ(X, Y, Z, W));
+ reg_src(&new_inst.Src[1], &ctx->tmp[A].src, SWIZ(X, Y, Z, W));
+ tctx->emit_instruction(tctx, &new_inst);
+ }
+}
+
/* Inserts a MOV_SAT for the needed components of tex coord. Note that
* in the case of TXP, the clamping must happen *after* projection, so
* we need to lower TXP to TEX.
@@ -1401,6 +1505,16 @@ transform_instr(struct tgsi_transform_context *tctx,
goto skip;
transform_dotp(tctx, inst);
break;
+ case TGSI_OPCODE_FLR:
+ if (!ctx->config->lower_FLR)
+ goto skip;
+ transform_flr_ceil(tctx, inst);
+ break;
+ case TGSI_OPCODE_CEIL:
+ if (!ctx->config->lower_CEIL)
+ goto skip;
+ transform_flr_ceil(tctx, inst);
+ break;
case TGSI_OPCODE_TEX:
case TGSI_OPCODE_TXP:
case TGSI_OPCODE_TXB:
@@ -1432,6 +1546,9 @@ tgsi_transform_lowering(const struct tgsi_lowering_config *config,
/* sanity check in case limit is ever increased: */
STATIC_ASSERT((sizeof(config->saturate_s) * 8) >= PIPE_MAX_SAMPLERS);
+ /* sanity check the lowering */
+ assert(!(config->lower_FRC && (config->lower_FLR || config->lower_CEIL)));
+
memset(&ctx, 0, sizeof(ctx));
ctx.base.transform_instruction = transform_instr;
ctx.info = info;
@@ -1473,6 +1590,8 @@ tgsi_transform_lowering(const struct tgsi_lowering_config *config,
OPCS(DPH) ||
OPCS(DP2) ||
OPCS(DP2A) ||
+ OPCS(FLR) ||
+ OPCS(CEIL) ||
OPCS(TXP) ||
ctx.two_side_colors ||
ctx.saturate))
@@ -1541,6 +1660,14 @@ tgsi_transform_lowering(const struct tgsi_lowering_config *config,
newlen += DP2A_GROW * OPCS(DP2A);
numtmp = MAX2(numtmp, DOTP_TMP);
}
+ if (OPCS(FLR)) {
+ newlen += FLR_GROW * OPCS(FLR);
+ numtmp = MAX2(numtmp, FLR_TMP);
+ }
+ if (OPCS(CEIL)) {
+ newlen += CEIL_GROW * OPCS(CEIL);
+ numtmp = MAX2(numtmp, CEIL_TMP);
+ }
if (ctx.saturate || config->lower_TXP) {
int n = 0;
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-28 10:46:29 +0000