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-rw-r--r--src/gallium/drivers/r600/evergreen_state.c2
-rw-r--r--src/gallium/drivers/r600/r600_shader.c10
-rw-r--r--src/gallium/drivers/r600/r600_shader.h1
3 files changed, 12 insertions, 1 deletions
diff --git a/src/gallium/drivers/r600/evergreen_state.c b/src/gallium/drivers/r600/evergreen_state.c
index 4c9163c2a7b..742ca5babb3 100644
--- a/src/gallium/drivers/r600/evergreen_state.c
+++ b/src/gallium/drivers/r600/evergreen_state.c
@@ -3369,7 +3369,7 @@ void evergreen_update_ps_state(struct pipe_context *ctx, struct r600_pipe_shader
exports_ps |= 1;
}
- num_cout = rshader->nr_ps_color_exports;
+ num_cout = rshader->ps_export_highest + 1;
exports_ps |= S_02884C_EXPORT_COLORS(num_cout);
if (!exports_ps) {
diff --git a/src/gallium/drivers/r600/r600_shader.c b/src/gallium/drivers/r600/r600_shader.c
index be9b1e9aefc..c3bcb9b77d3 100644
--- a/src/gallium/drivers/r600/r600_shader.c
+++ b/src/gallium/drivers/r600/r600_shader.c
@@ -3876,6 +3876,16 @@ static int r600_shader_from_tgsi(struct r600_context *rctx,
output[j].type = V_SQ_CF_ALLOC_EXPORT_WORD0_SQ_EXPORT_PIXEL;
shader->nr_ps_color_exports++;
shader->ps_color_export_mask |= (0xf << (shader->output[i].sid * 4));
+
+ /* If the i-th target format is set, all previous target formats must
+ * be non-zero to avoid hangs. - from radeonsi, seems to apply to eg as well.
+ */
+ if (shader->output[i].sid > 0)
+ for (unsigned x = 0; x < shader->output[i].sid; x++)
+ shader->ps_color_export_mask |= (1 << (x*4));
+
+ if (shader->output[i].sid > shader->ps_export_highest)
+ shader->ps_export_highest = shader->output[i].sid;
if (shader->fs_write_all && (rscreen->b.chip_class >= EVERGREEN)) {
for (k = 1; k < max_color_exports; k++) {
j++;
diff --git a/src/gallium/drivers/r600/r600_shader.h b/src/gallium/drivers/r600/r600_shader.h
index 7fca3f455e8..4b23facf6f8 100644
--- a/src/gallium/drivers/r600/r600_shader.h
+++ b/src/gallium/drivers/r600/r600_shader.h
@@ -85,6 +85,7 @@ struct r600_shader {
/* Real number of ps color exports compiled in the bytecode */
unsigned nr_ps_color_exports;
unsigned ps_color_export_mask;
+ unsigned ps_export_highest;
/* bit n is set if the shader writes gl_ClipDistance[n] */
unsigned cc_dist_mask;
unsigned clip_dist_write;