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r600g: fix fragcoord.w

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Signed-off-by: Vadim Girlin <vadimgirlin@gmail.com>
This commit is contained in:
Vadim Girlin
2012-01-23 14:12:46 +04:00
committed by Dave Airlie
parent 468c7ea2ac
commit c4d644bac1
1 changed files with 27 additions and 4 deletions
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31
src/gallium/drivers/r600/r600_shader.c
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@@ -197,6 +197,7 @@ struct r600_shader_ctx {
int colors_used; int colors_used;
boolean clip_vertex_write; boolean clip_vertex_write;
unsigned cv_output; unsigned cv_output;
int fragcoord_input;
}; };
struct r600_shader_tgsi_instruction { struct r600_shader_tgsi_instruction {
@@ -454,13 +455,19 @@ static int tgsi_declaration(struct r600_shader_ctx *ctx)
ctx->shader->input[i].centroid = d->Declaration.Centroid; ctx->shader->input[i].centroid = d->Declaration.Centroid;
ctx->shader->input[i].gpr = ctx->file_offset[TGSI_FILE_INPUT] + d->Range.First; ctx->shader->input[i].gpr = ctx->file_offset[TGSI_FILE_INPUT] + d->Range.First;
if (ctx->type == TGSI_PROCESSOR_FRAGMENT) { if (ctx->type == TGSI_PROCESSOR_FRAGMENT) {
if (ctx->shader->input[i].name == TGSI_SEMANTIC_FACE) switch (ctx->shader->input[i].name) {
case TGSI_SEMANTIC_FACE:
ctx->face_gpr = ctx->shader->input[i].gpr; ctx->face_gpr = ctx->shader->input[i].gpr;
else if (ctx->shader->input[i].name == TGSI_SEMANTIC_COLOR) break;
case TGSI_SEMANTIC_COLOR:
ctx->colors_used++; ctx->colors_used++;
break;
case TGSI_SEMANTIC_POSITION:
ctx->fragcoord_input = i;
break;
}
if (ctx->bc->chip_class >= EVERGREEN) { if (ctx->bc->chip_class >= EVERGREEN) {
r = evergreen_interp_input(ctx, i); if ((r = evergreen_interp_input(ctx, i)))
if (r)
return r; return r;
} }
} }
@@ -823,6 +830,7 @@ static int r600_shader_from_tgsi(struct r600_pipe_context * rctx, struct r600_pi
ctx.bc->type = shader->processor_type; ctx.bc->type = shader->processor_type;
ctx.face_gpr = -1; ctx.face_gpr = -1;
ctx.fragcoord_input = -1;
ctx.colors_used = 0; ctx.colors_used = 0;
ctx.clip_vertex_write = 0; ctx.clip_vertex_write = 0;
@@ -928,6 +936,21 @@ static int r600_shader_from_tgsi(struct r600_pipe_context * rctx, struct r600_pi
} }
} }
if (ctx.fragcoord_input >= 0) {
struct r600_bytecode_alu alu;
memset(&alu, 0, sizeof(struct r600_bytecode_alu));
alu.inst = BC_INST(ctx.bc, V_SQ_ALU_WORD1_OP2_SQ_OP2_INST_RECIP_IEEE);
alu.src[0].sel = shader->input[ctx.fragcoord_input].gpr;
alu.src[0].chan = 3;
alu.dst.sel = shader->input[ctx.fragcoord_input].gpr;
alu.dst.chan = 3;
alu.dst.write = 1;
alu.last = 1;
if ((r = r600_bytecode_add_alu(ctx.bc, &alu)))
return r;
}
if (shader->two_side && ctx.colors_used) { if (shader->two_side && ctx.colors_used) {
if ((r = process_twoside_color_inputs(&ctx))) if ((r = process_twoside_color_inputs(&ctx)))
return r; return r;