r600g: nuke the fallback for vertex and fragment color clamping

src/gallium/drivers/r600/evergreen_state.c

@@ -902,8 +902,6 @@ static void *evergreen_create_rs_state(struct pipe_context *ctx,
 	}
 
 	rstate = &rs->rstate;
-	rs->clamp_vertex_color = state->clamp_vertex_color;
-	rs->clamp_fragment_color = state->clamp_fragment_color;
 	rs->flatshade = state->flatshade;
 	rs->sprite_coord_enable = state->sprite_coord_enable;
 	rs->two_side = state->light_twoside;

src/gallium/drivers/r600/r600_pipe.h

@@ -105,8 +105,6 @@ struct r600_pipe_sampler_view {
 
 struct r600_pipe_rasterizer {
 	struct r600_pipe_state		rstate;
-	boolean				clamp_vertex_color;
-	boolean				clamp_fragment_color;
 	boolean				flatshade;
 	boolean				two_side;
 	unsigned			sprite_coord_enable;
@@ -217,8 +215,6 @@ struct r600_pipe_context {
 	struct pipe_query		*saved_render_cond;
 	unsigned			saved_render_cond_mode;
 	/* shader information */
-	boolean				clamp_vertex_color;
-	boolean				clamp_fragment_color;
 	boolean				two_side;
 	unsigned			user_clip_plane_enable;
 	unsigned			clip_dist_enable;

src/gallium/drivers/r600/r600_shader.c

@@ -835,10 +835,6 @@ static int r600_shader_from_tgsi(struct r600_pipe_context * rctx, struct r600_pi
 	ctx.clip_vertex_write = 0;
 
 	shader->two_side = (ctx.type == TGSI_PROCESSOR_FRAGMENT) && rctx->two_side;
-
-	shader->clamp_color = (((ctx.type == TGSI_PROCESSOR_FRAGMENT) && rctx->clamp_fragment_color) ||
-		((ctx.type == TGSI_PROCESSOR_VERTEX) && rctx->clamp_vertex_color));
-
 	shader->nr_cbufs = rctx->nr_cbufs;
 
 	/* register allocations */
@@ -1034,37 +1030,6 @@ static int r600_shader_from_tgsi(struct r600_pipe_context * rctx, struct r600_pi
 		}
 	}
 
-	/* clamp color outputs */
-	if (shader->clamp_color) {
-		for (i = 0; i < noutput; i++) {
-			if (shader->output[i].name == TGSI_SEMANTIC_COLOR ||
-				shader->output[i].name == TGSI_SEMANTIC_BCOLOR) {
-
-				int j;
-				for (j = 0; j < 4; j++) {
-					struct r600_bytecode_alu alu;
-					memset(&alu, 0, sizeof(struct r600_bytecode_alu));
-
-					/* MOV_SAT R, R */
-					alu.inst = BC_INST(ctx.bc, V_SQ_ALU_WORD1_OP2_SQ_OP2_INST_MOV);
-					alu.dst.sel = shader->output[i].gpr;
-					alu.dst.chan = j;
-					alu.dst.write = 1;
-					alu.dst.clamp = 1;
-					alu.src[0].sel = alu.dst.sel;
-					alu.src[0].chan = j;
-
-					if (j == 3) {
-						alu.last = 1;
-					}
-					r = r600_bytecode_add_alu(ctx.bc, &alu);
-					if (r)
-						return r;
-				}
-			}
-		}
-	}
-
 	/* Add stream outputs. */
 	if (ctx.type == TGSI_PROCESSOR_VERTEX && so.num_outputs) {
 		for (i = 0; i < so.num_outputs; i++) {

src/gallium/drivers/r600/r600_shader.h

@@ -48,7 +48,6 @@ struct r600_shader {
 	boolean			uses_kill;
 	boolean			fs_write_all;
 	boolean			vs_prohibit_ucps;
-	boolean			clamp_color;
 	boolean			two_side;
 	unsigned		nr_cbufs;
 	/* bit n is set if the shader writes gl_ClipDistance[n] */

src/gallium/drivers/r600/r600_state.c

@@ -954,8 +954,6 @@ static void *r600_create_rs_state(struct pipe_context *ctx,
 	}
 
 	rstate = &rs->rstate;
-	rs->clamp_vertex_color = state->clamp_vertex_color;
-	rs->clamp_fragment_color = state->clamp_fragment_color;
 	rs->flatshade = state->flatshade;
 	rs->sprite_coord_enable = state->sprite_coord_enable;
 	rs->two_side = state->light_twoside;

src/gallium/drivers/r600/r600_state_common.c

@@ -99,9 +99,6 @@ void r600_bind_rs_state(struct pipe_context *ctx, void *state)
 	if (state == NULL)
 		return;
 
-	rctx->clamp_vertex_color = rs->clamp_vertex_color;
-	rctx->clamp_fragment_color = rs->clamp_fragment_color;
-
 	rctx->sprite_coord_enable = rs->sprite_coord_enable;
 	rctx->two_side = rs->two_side;
 
@@ -588,12 +585,7 @@ static void r600_update_derived_state(struct r600_pipe_context *rctx)
 		r600_update_sampler_states(rctx);
 	}
 
-	if (rctx->vs_shader->shader.clamp_color != rctx->clamp_vertex_color) {
-		r600_shader_rebuild(&rctx->context, rctx->vs_shader);
-	}
-
-	if ((rctx->ps_shader->shader.clamp_color != rctx->clamp_fragment_color) ||
-	    (rctx->ps_shader->shader.two_side != rctx->two_side) ||
+	if ((rctx->ps_shader->shader.two_side != rctx->two_side) ||
 	    ((rctx->chip_class >= EVERGREEN) && rctx->ps_shader->shader.fs_write_all &&
 	     (rctx->ps_shader->shader.nr_cbufs != rctx->nr_cbufs))) {
 		r600_shader_rebuild(&rctx->context, rctx->ps_shader);