[Mesa-dev] [PATCH 6/6] r600: add support for PK2H/UP2H
Ilia Mirkin
imirkin at alum.mit.edu
Sat Jan 2 16:38:01 PST 2016
Signed-off-by: Ilia Mirkin <imirkin at alum.mit.edu>
---
src/gallium/drivers/r600/r600_pipe.c | 2 +-
src/gallium/drivers/r600/r600_shader.c | 102 +++++++++++++++++++++++++++++++--
2 files changed, 99 insertions(+), 5 deletions(-)
diff --git a/src/gallium/drivers/r600/r600_pipe.c b/src/gallium/drivers/r600/r600_pipe.c
index 70c1ec1..359fe41 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;
@@ -351,7 +352,6 @@ static int r600_get_param(struct pipe_screen* pscreen, enum pipe_cap param)
case PIPE_CAP_DRAW_PARAMETERS:
case PIPE_CAP_MULTI_DRAW_INDIRECT:
case PIPE_CAP_MULTI_DRAW_INDIRECT_PARAMS:
- 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 d411b0b..23ea34e 100644
--- a/src/gallium/drivers/r600/r600_shader.c
+++ b/src/gallium/drivers/r600/r600_shader.c
@@ -8959,6 +8959,100 @@ 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;
+
+ /* 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 */
+ memset(&alu, 0, sizeof(struct r600_bytecode_alu));
+ alu.op = ALU_OP3_MULADD_UINT24;
+ alu.is_op3 = 1;
+ tgsi_dst(ctx, &inst->Dst[0], 0, &alu.dst);
+ alu.last = 1;
+ 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;
+ 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.xy = f16_to_f32(temp.xy) */
+ for (int 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;
+ if (i == lasti)
+ alu.last = 1;
+ 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},
@@ -9205,7 +9299,7 @@ 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},
@@ -9220,7 +9314,7 @@ 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},
@@ -9427,7 +9521,7 @@ 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},
@@ -9442,7 +9536,7 @@ 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},
--
2.4.10
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