From 2fe39b46e73aea37152777fe11d489e0b1bc3f92 Mon Sep 17 00:00:00 2001 From: Vadim Girlin Date: Fri, 17 Jun 2011 23:02:01 +0400 Subject: [PATCH] r600g: fix LIT to handle src==dst properly Current LIT implementation uses dst components for storing temp results, possibly overwriting still needed values (depends on the swizzles). This patch uses temp reg for one of such cases (found in etqw) and fixes "LIT R.z, R.xyzz". Tested on evergreen. Fixes some etqw-demo rendering glitches when "Lighting" is set to "High" in the settings. Signed-off-by: Vadim Girlin Signed-off-by: Dave Airlie --- src/gallium/drivers/r600/r600_shader.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/src/gallium/drivers/r600/r600_shader.c b/src/gallium/drivers/r600/r600_shader.c index 0995dd5a99b..02681081c93 100644 --- a/src/gallium/drivers/r600/r600_shader.c +++ b/src/gallium/drivers/r600/r600_shader.c @@ -1366,7 +1366,9 @@ static int tgsi_lit(struct r600_shader_ctx *ctx) memset(&alu, 0, sizeof(struct r600_bc_alu)); alu.inst = CTX_INST(V_SQ_ALU_WORD1_OP2_SQ_OP2_INST_LOG_CLAMPED); r600_bc_src(&alu.src[0], &ctx->src[0], 1); - tgsi_dst(ctx, &inst->Dst[0], 2, &alu.dst); + alu.dst.sel = ctx->temp_reg; + alu.dst.chan = 2; + alu.dst.write = 1; alu.last = 1; r = r600_bc_add_alu(ctx->bc, &alu); if (r)