r600g: add assembler support for other vtx fetch fields.

this shouldn't change behaviour, just push the choice of what
to do out to the shader.

src/gallium/drivers/r600/r600_asm.c

@@ -601,7 +601,11 @@ static int r600_bc_vtx_build(struct r600_bc *bc, struct r600_bc_vtx *vtx, unsign
 				S_SQ_VTX_WORD1_DST_SEL_Y(vtx->dst_sel_y) |
 				S_SQ_VTX_WORD1_DST_SEL_Z(vtx->dst_sel_z) |
 				S_SQ_VTX_WORD1_DST_SEL_W(vtx->dst_sel_w) |
-				S_SQ_VTX_WORD1_USE_CONST_FIELDS(1) |
+				S_SQ_VTX_WORD1_USE_CONST_FIELDS(vtx->use_const_fields) |
+				S_SQ_VTX_WORD1_DATA_FORMAT(vtx->data_format) |
+				S_SQ_VTX_WORD1_NUM_FORMAT_ALL(vtx->num_format_all) |
+				S_SQ_VTX_WORD1_FORMAT_COMP_ALL(vtx->format_comp_all) |
+				S_SQ_VTX_WORD1_SRF_MODE_ALL(vtx->srf_mode_all) |
 				S_SQ_VTX_WORD1_GPR_DST_GPR(vtx->dst_gpr);
 	bc->bytecode[id++] = S_SQ_VTX_WORD2_MEGA_FETCH(1);
 	bc->bytecode[id++] = 0;

src/gallium/drivers/r600/r600_asm.h

@@ -101,6 +101,11 @@ struct r600_bc_vtx {
 	unsigned			dst_sel_y;
 	unsigned			dst_sel_z;
 	unsigned			dst_sel_w;
+	unsigned			use_const_fields;
+	unsigned			data_format;
+	unsigned			num_format_all;
+	unsigned			format_comp_all;
+	unsigned			srf_mode_all;
 };
 
 struct r600_bc_output {

src/gallium/drivers/r600/r600_shader.c

@@ -439,6 +439,7 @@ static int tgsi_declaration(struct r600_shader_ctx *ctx)
 			vtx.dst_sel_y = 1;
 			vtx.dst_sel_z = 2;
 			vtx.dst_sel_w = 3;
+			vtx.use_const_fields = 1;
 			r = r600_bc_add_vtx(ctx->bc, &vtx);
 			if (r)
 				return r;