Module: Mesa
Branch: master
Commit: 8ec05f06cba381ce757e18bc7c41f0bd33205926
URL:    
http://cgit.freedesktop.org/mesa/mesa/commit/?id=8ec05f06cba381ce757e18bc7c41f0bd33205926

Author: Marek Olšák <[email protected]>
Date:   Wed Jan 25 03:28:23 2012 +0100

r600g: handle start_component from stream_output_info when possible

---

 src/gallium/drivers/r600/r600_shader.c |    8 ++++----
 1 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/src/gallium/drivers/r600/r600_shader.c 
b/src/gallium/drivers/r600/r600_shader.c
index 4fe657c..08858e7 100644
--- a/src/gallium/drivers/r600/r600_shader.c
+++ b/src/gallium/drivers/r600/r600_shader.c
@@ -1041,8 +1041,8 @@ static int r600_shader_from_tgsi(struct r600_pipe_context 
* rctx, struct r600_pi
                                r = -EINVAL;
                                goto out_err;
                        }
-                       if (so.output[i].start_component) {
-                          R600_ERR("stream_output - start_component cannot be 
non-zero\n");
+                       if (so.output[i].dst_offset < 
so.output[i].start_component) {
+                          R600_ERR("stream_output - dst_offset cannot be less 
than start_component\n");
                           r = -EINVAL;
                           goto out_err;
                        }
@@ -1050,14 +1050,14 @@ static int r600_shader_from_tgsi(struct 
r600_pipe_context * rctx, struct r600_pi
                        memset(&output, 0, sizeof(struct r600_bytecode_output));
                        output.gpr = 
shader->output[so.output[i].register_index].gpr;
                        output.elem_size = 0;
-                       output.array_base = so.output[i].dst_offset;
+                       output.array_base = so.output[i].dst_offset - 
so.output[i].start_component;
                        output.type = 
V_SQ_CF_ALLOC_EXPORT_WORD0_SQ_EXPORT_WRITE;
                        output.burst_count = 1;
                        output.barrier = 1;
                        /* array_size is an upper limit for the burst_count
                         * with MEM_STREAM instructions */
                        output.array_size = 0xFFF;
-                       output.comp_mask = (1 << so.output[i].num_components) - 
1;
+                       output.comp_mask = ((1 << so.output[i].num_components) 
- 1) << so.output[i].start_component;
                        if (ctx.bc->chip_class >= EVERGREEN) {
                                switch (so.output[i].output_buffer) {
                                case 0:

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