---
src/gallium/drivers/r600/r600_shader.c | 59 ++++++++++++++++++++--------------
src/gallium/drivers/r600/r600_shader.h | 1 +
2 files changed, 35 insertions(+), 25 deletions(-)
diff --git a/src/gallium/drivers/r600/r600_shader.c
b/src/gallium/drivers/r600/r600_shader.c
index 14c1763..310ab62 100644
--- a/src/gallium/drivers/r600/r600_shader.c
+++ b/src/gallium/drivers/r600/r600_shader.c
@@ -1123,36 +1123,14 @@ static int process_twoside_color_inputs(struct
r600_shader_ctx *ctx)
{
int i, r, count = ctx->shader->ninput;
- /* additional inputs will be allocated right after the existing inputs,
- * we won't need them after the color selection, so we don't need to
- * reserve these gprs for the rest of the shader code and to adjust
- * output offsets etc. */
- int gpr = ctx->file_offset[TGSI_FILE_INPUT] +
- ctx->info.file_max[TGSI_FILE_INPUT] + 1;
-
- if (ctx->face_gpr == -1) {
- i = ctx->shader->ninput++;
- ctx->shader->input[i].name = TGSI_SEMANTIC_FACE;
- ctx->shader->input[i].spi_sid = 0;
- ctx->shader->input[i].gpr = gpr++;
- ctx->face_gpr = ctx->shader->input[i].gpr;
- }
-
for (i = 0; i < count; i++) {
if (ctx->shader->input[i].name == TGSI_SEMANTIC_COLOR) {
- int ni = ctx->shader->ninput++;
- memcpy(&ctx->shader->input[ni],&ctx->shader->input[i],
sizeof(struct r600_shader_io));
- ctx->shader->input[ni].name = TGSI_SEMANTIC_BCOLOR;
- ctx->shader->input[ni].spi_sid =
r600_spi_sid(&ctx->shader->input[ni]);
- ctx->shader->input[ni].gpr = gpr++;
-
+ unsigned back_facing_reg =
ctx->shader->input[i].potential_back_facing_reg;
if (ctx->bc->chip_class >= EVERGREEN) {
- r = evergreen_interp_input(ctx, ni);
- if (r)
+ if ((r = evergreen_interp_input(ctx,
back_facing_reg)))
return r;
}
-
- r = select_twoside_color(ctx, i, ni);
+ r = select_twoside_color(ctx, i, back_facing_reg);
if (r)
return r;
}
@@ -1313,6 +1291,37 @@ static int r600_shader_from_tgsi(struct r600_context *
rctx, struct r600_pipe_sh
goto out_err;
}
}
+
+ /* Process two side if needed */
+ if (shader->two_side && ctx.colors_used) {
+ int i, count = ctx.shader->ninput;
+
+ /* additional inputs will be allocated right after the existing
inputs,
+ * we won't need them after the color selection, so we don't
need to
+ * reserve these gprs for the rest of the shader code and to
adjust
+ * output offsets etc. */
+ int gpr = ctx.file_offset[TGSI_FILE_INPUT] +
+ ctx.info.file_max[TGSI_FILE_INPUT] + 1;
+
+ if (ctx.face_gpr == -1) {
+ i = ctx.shader->ninput++;
+ ctx.shader->input[i].name = TGSI_SEMANTIC_FACE;
+ ctx.shader->input[i].spi_sid = 0;
+ ctx.shader->input[i].gpr = gpr++;
+ ctx.face_gpr = ctx.shader->input[i].gpr;
+ }
+
+ for (i = 0; i < count; i++) {
+ if (ctx.shader->input[i].name == TGSI_SEMANTIC_COLOR) {
+ int ni = ctx.shader->ninput++;
+
memcpy(&ctx.shader->input[ni],&ctx.shader->input[i], sizeof(struct
r600_shader_io));
+ ctx.shader->input[ni].name =
TGSI_SEMANTIC_BCOLOR;
+ ctx.shader->input[ni].spi_sid =
r600_spi_sid(&ctx.shader->input[ni]);
+ ctx.shader->input[ni].gpr = gpr++;
+ ctx.shader->input[i].potential_back_facing_reg
= ni;
+ }
+ }
+ }
/* LLVM backend setup */
#ifdef R600_USE_LLVM
diff --git a/src/gallium/drivers/r600/r600_shader.h
b/src/gallium/drivers/r600/r600_shader.h
index eb0bbf6..e8a8cec 100644
--- a/src/gallium/drivers/r600/r600_shader.h
+++ b/src/gallium/drivers/r600/r600_shader.h
@@ -34,6 +34,7 @@ struct r600_shader_io {
unsigned interpolate;
boolean centroid;
unsigned lds_pos; /* for evergreen */
+ unsigned potential_back_facing_reg;
unsigned write_mask;
};
--
1.7.11.4
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