[Mesa-dev] [PATCH] r600g: Add support for PK2H/UP2H
Glenn Kennard glenn.kennard at gmail.com
Sun Jan 3 14:47:18 PST 2016
Previous message: [Mesa-dev] [PATCH 1/2] WIP gallivm: add support for
PK2H/UP2H Next message: [Mesa-dev] [PATCH] mesa: use gl_shader_variable
in
program resource list Messages sorted by: [ date ] [ thread ] [ subject
] [
author ]
Based off of Ilia's original patch, but with output values replicated
so
that it matches the TGSI semantics.
Signed-off-by: Glenn Kennard <glenn.kennard at gmail.com>
---
src/gallium/drivers/r600/r600_pipe.c | 2 +-
src/gallium/drivers/r600/r600_shader.c | 107
+++++++++++++++++++++++++++++++-- 2 files changed, 104 insertions(+),
5
deletions(-)
diff --git a/src/gallium/drivers/r600/r600_pipe.c
b/src/gallium/drivers/r600/r600_pipe.c index d71082f..3b5d26c 100644
--- a/src/gallium/drivers/r600/r600_pipe.c
+++ b/src/gallium/drivers/r600/r600_pipe.c
@@ -328,6 +328,7 @@ static int r600_get_param(struct pipe_screen*
pscreen,
enum pipe_cap param)>
case PIPE_CAP_TEXTURE_QUERY_LOD:
case PIPE_CAP_TGSI_FS_FINE_DERIVATIVE:
case PIPE_CAP_SAMPLER_VIEW_TARGET:
+ case PIPE_CAP_TGSI_PACK_HALF_FLOAT:
return family >= CHIP_CEDAR ? 1 : 0;
case PIPE_CAP_MAX_TEXTURE_GATHER_COMPONENTS:
return family >= CHIP_CEDAR ? 4 : 0;
@@ -349,7 +350,6 @@ static int r600_get_param(struct pipe_screen*
pscreen,
enum pipe_cap param)>
case PIPE_CAP_SHAREABLE_SHADERS:
case PIPE_CAP_CLEAR_TEXTURE:
case PIPE_CAP_DRAW_PARAMETERS:
- case PIPE_CAP_TGSI_PACK_HALF_FLOAT:
return 0;
case PIPE_CAP_MAX_SHADER_PATCH_VARYINGS:
diff --git a/src/gallium/drivers/r600/r600_shader.c
b/src/gallium/drivers/r600/r600_shader.c index 9c040ae..7b1eade 100644
--- a/src/gallium/drivers/r600/r600_shader.c
+++ b/src/gallium/drivers/r600/r600_shader.c
@@ -8960,6 +8960,105 @@ static int tgsi_umad(struct r600_shader_ctx
*ctx)
return 0;
}
+static int tgsi_pk2h(struct r600_shader_ctx *ctx)
+{
+ struct tgsi_full_instruction *inst =
&ctx->parse.FullToken.FullInstruction;
+ struct r600_bytecode_alu alu;
+ int r, i;
+ int lasti = tgsi_last_instruction(inst->Dst[0].Register.WriteMask);
+
+ /* temp.xy = f32_to_f16(src) */
+ memset(&alu, 0, sizeof(struct r600_bytecode_alu));
+ alu.op = ALU_OP1_FLT32_TO_FLT16;
+ alu.dst.chan = 0;
+ alu.dst.sel = ctx->temp_reg;
+ alu.dst.write = 1;
+ r600_bytecode_src(&alu.src[0], &ctx->src[0], 0);
+ r = r600_bytecode_add_alu(ctx->bc, &alu);
+ if (r)
+ return r;
+ alu.dst.chan = 1;
+ r600_bytecode_src(&alu.src[0], &ctx->src[0], 1);
+ alu.last = 1;
+ r = r600_bytecode_add_alu(ctx->bc, &alu);
+ if (r)
+ return r;
+
+ /* dst.x = temp.y * 0x10000 + temp.x */
+ for (i = 0; i < lasti + 1; i++) {
+ if (!(inst->Dst[0].Register.WriteMask & (1 << i)))
+ continue;
+
+ memset(&alu, 0, sizeof(struct r600_bytecode_alu));
+ alu.op = ALU_OP3_MULADD_UINT24;
+ alu.is_op3 = 1;
+ tgsi_dst(ctx, &inst->Dst[0], i, &alu.dst);
+ alu.last = i == lasti;
+ alu.src[0].sel = ctx->temp_reg;
+ alu.src[0].chan = 1;
+ alu.src[1].sel = V_SQ_ALU_SRC_LITERAL;
+ alu.src[1].value = 0x10000;
+ alu.src[2].sel = ctx->temp_reg;
+ alu.src[2].chan = 0;
+ r = r600_bytecode_add_alu(ctx->bc, &alu);
+ if (r)
+ return r;
+ }
+
+ return 0;
+}
+
+static int tgsi_up2h(struct r600_shader_ctx *ctx)
+{
+ struct tgsi_full_instruction *inst =
&ctx->parse.FullToken.FullInstruction;
+ struct r600_bytecode_alu alu;
+ int r, i;
+ int lasti = tgsi_last_instruction(inst->Dst[0].Register.WriteMask);
+
+ /* temp.x = src.x */
+ /* note: no need to mask out the high bits */
+ memset(&alu, 0, sizeof(struct r600_bytecode_alu));
+ alu.op = ALU_OP1_MOV;
+ alu.dst.chan = 0;
+ alu.dst.sel = ctx->temp_reg;
+ alu.dst.write = 1;
+ r600_bytecode_src(&alu.src[0], &ctx->src[0], 0);
+ r = r600_bytecode_add_alu(ctx->bc, &alu);
+ if (r)
+ return r;
+
+ /* temp.y = src.x >> 16 */
+ memset(&alu, 0, sizeof(struct r600_bytecode_alu));
+ alu.op = ALU_OP2_LSHR_INT;
+ alu.dst.chan = 1;
+ alu.dst.sel = ctx->temp_reg;
+ alu.dst.write = 1;
+ r600_bytecode_src(&alu.src[0], &ctx->src[0], 0);
+ alu.src[1].sel = V_SQ_ALU_SRC_LITERAL;
+ alu.src[1].value = 16;
+ alu.last = 1;
+ r = r600_bytecode_add_alu(ctx->bc, &alu);
+ if (r)
+ return r;
+
+ /* dst.wz = dst.xy = f16_to_f32(temp.xy) */
+ for (i = 0; i < lasti + 1; i++) {
+ if (!(inst->Dst[0].Register.WriteMask & (1 << i)))
+ continue;
+ memset(&alu, 0, sizeof(struct r600_bytecode_alu));
+ tgsi_dst(ctx, &inst->Dst[0], i, &alu.dst);
+ alu.op = ALU_OP1_FLT16_TO_FLT32;
+ alu.src[0].sel = ctx->temp_reg;
+ alu.src[0].chan = i % 2;
+ alu.last = i == lasti;
+ r = r600_bytecode_add_alu(ctx->bc, &alu);
+ if (r)
+ return r;
+ }
+
+ return 0;
+}
+
static const struct r600_shader_tgsi_instruction
r600_shader_tgsi_instruction[] = {>
[TGSI_OPCODE_ARL] = { ALU_OP0_NOP, tgsi_r600_arl},
[TGSI_OPCODE_MOV] = { ALU_OP1_MOV, tgsi_op2},
@@ -9206,7 +9305,7 @@ static const struct r600_shader_tgsi_instruction
eg_shader_tgsi_instruction[] =>
[TGSI_OPCODE_DDX] = { FETCH_OP_GET_GRADIENTS_H, tgsi_tex},
[TGSI_OPCODE_DDY] = { FETCH_OP_GET_GRADIENTS_V, tgsi_tex},
[TGSI_OPCODE_KILL] = { ALU_OP2_KILLGT, tgsi_kill}, /* unconditional
kill
*/
- [TGSI_OPCODE_PK2H] = { ALU_OP0_NOP, tgsi_unsupported},
+ [TGSI_OPCODE_PK2H] = { ALU_OP0_NOP, tgsi_pk2h},
[TGSI_OPCODE_PK2US] = { ALU_OP0_NOP, tgsi_unsupported},
[TGSI_OPCODE_PK4B] = { ALU_OP0_NOP, tgsi_unsupported},
[TGSI_OPCODE_PK4UB] = { ALU_OP0_NOP, tgsi_unsupported},
@@ -9221,7 +9320,7 @@ static const struct r600_shader_tgsi_instruction
eg_shader_tgsi_instruction[] =>
[TGSI_OPCODE_TEX] = { FETCH_OP_SAMPLE, tgsi_tex},
[TGSI_OPCODE_TXD] = { FETCH_OP_SAMPLE_G, tgsi_tex},
[TGSI_OPCODE_TXP] = { FETCH_OP_SAMPLE, tgsi_tex},
- [TGSI_OPCODE_UP2H] = { ALU_OP0_NOP, tgsi_unsupported},
+ [TGSI_OPCODE_UP2H] = { ALU_OP0_NOP, tgsi_up2h},
[TGSI_OPCODE_UP2US] = { ALU_OP0_NOP, tgsi_unsupported},
[TGSI_OPCODE_UP4B] = { ALU_OP0_NOP, tgsi_unsupported},
[TGSI_OPCODE_UP4UB] = { ALU_OP0_NOP, tgsi_unsupported},
@@ -9428,7 +9527,7 @@ static const struct r600_shader_tgsi_instruction
cm_shader_tgsi_instruction[] =>
[TGSI_OPCODE_DDX] = { FETCH_OP_GET_GRADIENTS_H, tgsi_tex},
[TGSI_OPCODE_DDY] = { FETCH_OP_GET_GRADIENTS_V, tgsi_tex},
[TGSI_OPCODE_KILL] = { ALU_OP2_KILLGT, tgsi_kill}, /* unconditional
kill
*/
- [TGSI_OPCODE_PK2H] = { ALU_OP0_NOP, tgsi_unsupported},
+ [TGSI_OPCODE_PK2H] = { ALU_OP0_NOP, tgsi_pk2h},
[TGSI_OPCODE_PK2US] = { ALU_OP0_NOP, tgsi_unsupported},
[TGSI_OPCODE_PK4B] = { ALU_OP0_NOP, tgsi_unsupported},
[TGSI_OPCODE_PK4UB] = { ALU_OP0_NOP, tgsi_unsupported},
@@ -9443,7 +9542,7 @@ static const struct r600_shader_tgsi_instruction
cm_shader_tgsi_instruction[] =>
[TGSI_OPCODE_TEX] = { FETCH_OP_SAMPLE, tgsi_tex},
[TGSI_OPCODE_TXD] = { FETCH_OP_SAMPLE_G, tgsi_tex},
[TGSI_OPCODE_TXP] = { FETCH_OP_SAMPLE, tgsi_tex},
- [TGSI_OPCODE_UP2H] = { ALU_OP0_NOP, tgsi_unsupported},
+ [TGSI_OPCODE_UP2H] = { ALU_OP0_NOP, tgsi_up2h},
[TGSI_OPCODE_UP2US] = { ALU_OP0_NOP, tgsi_unsupported},
[TGSI_OPCODE_UP4B] = { ALU_OP0_NOP, tgsi_unsupported},
[TGSI_OPCODE_UP4UB] = { ALU_OP0_NOP, tgsi_unsupported},
--
1.9.1
