r600g: fix fragcoord.w test on cayman

diff --git a/src/gallium/drivers/r600/r600_shader.c b/src/gallium/drivers/r600/r600_shader.c
index 08858e7..3085c47 100644 (file)
--- a/src/gallium/drivers/r600/r600_shader.c
+++ b/src/gallium/drivers/r600/r600_shader.c
@@ -933,18 +933,35 @@ 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;
+               if (ctx.bc->chip_class == CAYMAN) {
+                       for (j = 0 ; j < 4; j++) {
+                               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;
+                               alu.dst.sel = shader->input[ctx.fragcoord_input].gpr;
+                               alu.dst.chan = j;
+                               alu.dst.write = (j == 3);
+                               alu.last = 1;
+                               if ((r = r600_bytecode_add_alu(ctx.bc, &alu)))
+                                       return r;
+                       }
+               } else {
+                       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) {