r600g: switch btw flat/linear interpolation

I am not sure how to properly handle flat shading regarding
non color parameter to fragment shader. It seems we should
still interpolate non color using linear interpolation and
flat shade only apply to color.

Signed-off-by: Jerome Glisse <[email protected]>

1 files changed, 6 insertions, 1 deletions

diff --git a/src/gallium/drivers/r600/r600_shader.c b/src/gallium/drivers/r600/r600_shader.c
index 8837a7272b5..3f1979b9ccb 100644
--- a/src/gallium/drivers/r600/r600_shader.c
+++ b/src/gallium/drivers/r600/r600_shader.c
@@ -169,7 +169,10 @@ static int r600_pipe_shader_ps(struct pipe_context *ctx, struct r600_context_sta
 	for (i = 0; i < rshader->ninput; i++) {
 		tmp = S_028644_SEMANTIC(rshader->input[i].sid);
 		tmp |= S_028644_SEL_CENTROID(1);
-		tmp |= S_028644_FLAT_SHADE(rshader->flat_shade);
+		if (rshader->input[i].name == TGSI_SEMANTIC_COLOR ||
+			rshader->input[i].name == TGSI_SEMANTIC_BCOLOR) {
+			tmp |= S_028644_FLAT_SHADE(rshader->flat_shade);
+		}
 		state->states[R600_PS_SHADER__SPI_PS_INPUT_CNTL_0 + i] = tmp;
 	}
 	state->states[R600_PS_SHADER__SPI_PS_IN_CONTROL_0] = S_0286CC_NUM_INTERP(rshader->ninput) |
@@ -287,6 +290,7 @@ static int tgsi_declaration(struct r600_shader_ctx *ctx)
 		i = ctx->shader->ninput++;
 		ctx->shader->input[i].name = d->Semantic.Name;
 		ctx->shader->input[i].sid = d->Semantic.Index;
+		ctx->shader->input[i].interpolate = d->Declaration.Interpolate;
 		ctx->shader->input[i].gpr = ctx->file_offset[TGSI_FILE_INPUT] + i;
 		if (ctx->type == TGSI_PROCESSOR_VERTEX) {
 			/* turn input into fetch */
@@ -313,6 +317,7 @@ static int tgsi_declaration(struct r600_shader_ctx *ctx)
 		ctx->shader->output[i].name = d->Semantic.Name;
 		ctx->shader->output[i].sid = d->Semantic.Index;
 		ctx->shader->output[i].gpr = ctx->file_offset[TGSI_FILE_OUTPUT] + i;
+		ctx->shader->output[i].interpolate = d->Declaration.Interpolate;
 		break;
 	case TGSI_FILE_CONSTANT:
 	case TGSI_FILE_TEMPORARY: