Mesa (master): mesa/st: pass 4-offset TG4 without lowering if supported
Ilia Mirkin
imirkin at kemper.freedesktop.org
Thu May 8 00:44:24 UTC 2014
Module: Mesa
Branch: master
Commit: 83b900fd0a2187fe70e553ac782660cd23c5041c
URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=83b900fd0a2187fe70e553ac782660cd23c5041c
Author: Ilia Mirkin <imirkin at alum.mit.edu>
Date: Sat Apr 26 23:47:14 2014 -0400
mesa/st: pass 4-offset TG4 without lowering if supported
Signed-off-by: Ilia Mirkin <imirkin at alum.mit.edu>
Reviewed-by: Roland Scheidegger <sroland at vmware.com>
---
src/mesa/state_tracker/st_glsl_to_tgsi.cpp | 55 +++++++++++++++++++++-------
1 file changed, 41 insertions(+), 14 deletions(-)
diff --git a/src/mesa/state_tracker/st_glsl_to_tgsi.cpp b/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
index 6eb6c8a..bdee1f4 100644
--- a/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
+++ b/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
@@ -87,8 +87,7 @@ extern "C" {
*/
#define MAX_ARRAYS 256
-/* if we support a native gallium TG4 with the ability to take 4 texoffsets then bump this */
-#define MAX_GLSL_TEXTURE_OFFSET 1
+#define MAX_GLSL_TEXTURE_OFFSET 4
class st_src_reg;
class st_dst_reg;
@@ -2728,12 +2727,13 @@ glsl_to_tgsi_visitor::visit(ir_call *ir)
void
glsl_to_tgsi_visitor::visit(ir_texture *ir)
{
- st_src_reg result_src, coord, cube_sc, lod_info, projector, dx, dy, offset, sample_index, component;
+ st_src_reg result_src, coord, cube_sc, lod_info, projector, dx, dy, offset[MAX_GLSL_TEXTURE_OFFSET], sample_index, component;
st_dst_reg result_dst, coord_dst, cube_sc_dst;
glsl_to_tgsi_instruction *inst = NULL;
unsigned opcode = TGSI_OPCODE_NOP;
const glsl_type *sampler_type = ir->sampler->type;
bool is_cube_array = false;
+ unsigned i;
/* if we are a cube array sampler */
if ((sampler_type->sampler_dimensionality == GLSL_SAMPLER_DIM_CUBE &&
@@ -2771,7 +2771,7 @@ glsl_to_tgsi_visitor::visit(ir_texture *ir)
opcode = (is_cube_array && ir->shadow_comparitor) ? TGSI_OPCODE_TEX2 : TGSI_OPCODE_TEX;
if (ir->offset) {
ir->offset->accept(this);
- offset = this->result;
+ offset[0] = this->result;
}
break;
case ir_txb:
@@ -2780,7 +2780,7 @@ glsl_to_tgsi_visitor::visit(ir_texture *ir)
lod_info = this->result;
if (ir->offset) {
ir->offset->accept(this);
- offset = this->result;
+ offset[0] = this->result;
}
break;
case ir_txl:
@@ -2789,7 +2789,7 @@ glsl_to_tgsi_visitor::visit(ir_texture *ir)
lod_info = this->result;
if (ir->offset) {
ir->offset->accept(this);
- offset = this->result;
+ offset[0] = this->result;
}
break;
case ir_txd:
@@ -2800,7 +2800,7 @@ glsl_to_tgsi_visitor::visit(ir_texture *ir)
dy = this->result;
if (ir->offset) {
ir->offset->accept(this);
- offset = this->result;
+ offset[0] = this->result;
}
break;
case ir_txs:
@@ -2814,7 +2814,7 @@ glsl_to_tgsi_visitor::visit(ir_texture *ir)
lod_info = this->result;
if (ir->offset) {
ir->offset->accept(this);
- offset = this->result;
+ offset[0] = this->result;
}
break;
case ir_txf_ms:
@@ -2828,9 +2828,17 @@ glsl_to_tgsi_visitor::visit(ir_texture *ir)
component = this->result;
if (ir->offset) {
ir->offset->accept(this);
- /* this should have been lowered */
- assert(ir->offset->type->base_type != GLSL_TYPE_ARRAY);
- offset = this->result;
+ if (ir->offset->type->base_type == GLSL_TYPE_ARRAY) {
+ const glsl_type *elt_type = ir->offset->type->fields.array;
+ for (i = 0; i < ir->offset->type->length; i++) {
+ offset[i] = this->result;
+ offset[i].index += i * type_size(elt_type);
+ offset[i].type = elt_type->base_type;
+ offset[i].swizzle = swizzle_for_size(elt_type->vector_elements);
+ }
+ } else {
+ offset[0] = this->result;
+ }
}
break;
case ir_lod:
@@ -2960,8 +2968,9 @@ glsl_to_tgsi_visitor::visit(ir_texture *ir)
this->prog);
if (ir->offset) {
- inst->tex_offset_num_offset = 1;
- inst->tex_offsets[0] = offset;
+ for (i = 0; i < MAX_GLSL_TEXTURE_OFFSET && offset[i].file != PROGRAM_UNDEFINED; i++)
+ inst->tex_offsets[i] = offset[i];
+ inst->tex_offset_num_offset = i;
}
switch (sampler_type->sampler_dimensionality) {
@@ -4479,6 +4488,8 @@ translate_tex_offset(struct st_translate *t,
{
struct tgsi_texture_offset offset;
struct ureg_src imm_src;
+ struct ureg_dst dst;
+ int array;
switch (in_offset->file) {
case PROGRAM_IMMEDIATE:
@@ -4500,6 +4511,20 @@ translate_tex_offset(struct st_translate *t,
offset.SwizzleZ = GET_SWZ(in_offset->swizzle, 2);
offset.Padding = 0;
break;
+ case PROGRAM_ARRAY:
+ array = in_offset->index >> 16;
+
+ assert(array >= 0);
+ assert(array < (int) Elements(t->arrays));
+
+ dst = t->arrays[array];
+ offset.File = dst.File;
+ offset.Index = dst.Index + (in_offset->index & 0xFFFF) - 0x8000;
+ offset.SwizzleX = GET_SWZ(in_offset->swizzle, 0);
+ offset.SwizzleY = GET_SWZ(in_offset->swizzle, 1);
+ offset.SwizzleZ = GET_SWZ(in_offset->swizzle, 2);
+ offset.Padding = 0;
+ break;
default:
break;
}
@@ -5350,6 +5375,7 @@ st_new_shader_program(struct gl_context *ctx, GLuint name)
GLboolean
st_link_shader(struct gl_context *ctx, struct gl_shader_program *prog)
{
+ struct pipe_screen *pscreen = ctx->st->pipe->screen;
assert(prog->LinkStatus);
for (unsigned i = 0; i < MESA_SHADER_STAGES; i++) {
@@ -5388,7 +5414,8 @@ st_link_shader(struct gl_context *ctx, struct gl_shader_program *prog)
lower_packing_builtins(ir, lower_inst);
}
- lower_offset_arrays(ir);
+ if (!pscreen->get_param(pscreen, PIPE_CAP_TEXTURE_GATHER_OFFSETS))
+ lower_offset_arrays(ir);
do_mat_op_to_vec(ir);
lower_instructions(ir,
MOD_TO_FRACT |
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