Mesa (master): r300g: add conditional rendering
Marek Olšák
mareko at kemper.freedesktop.org
Sun Apr 4 07:00:37 UTC 2010
Module: Mesa
Branch: master
Commit: 655fe281556679669699052f37412a6243771619
URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=655fe281556679669699052f37412a6243771619
Author: Marek Olšák <maraeo at gmail.com>
Date: Sun Apr 4 08:59:09 2010 +0200
r300g: add conditional rendering
---
src/gallium/drivers/r300/r300_context.h | 2 ++
src/gallium/drivers/r300/r300_query.c | 23 +++++++++++++++++++++++
src/gallium/drivers/r300/r300_render.c | 8 ++++++++
3 files changed, 33 insertions(+), 0 deletions(-)
diff --git a/src/gallium/drivers/r300/r300_context.h b/src/gallium/drivers/r300/r300_context.h
index 0a82484..0310923 100644
--- a/src/gallium/drivers/r300/r300_context.h
+++ b/src/gallium/drivers/r300/r300_context.h
@@ -377,6 +377,8 @@ struct r300_context {
uint32_t zbuffer_bpp;
/* Whether scissor is enabled. */
boolean scissor_enabled;
+ /* Whether rendering is conditional and should be skipped. */
+ boolean skip_rendering;
/* upload managers */
struct u_upload_mgr *upload_vb;
struct u_upload_mgr *upload_ib;
diff --git a/src/gallium/drivers/r300/r300_query.c b/src/gallium/drivers/r300/r300_query.c
index f8b52d5..1778dc9 100644
--- a/src/gallium/drivers/r300/r300_query.c
+++ b/src/gallium/drivers/r300/r300_query.c
@@ -159,10 +159,33 @@ static boolean r300_get_query_result(struct pipe_context* pipe,
return TRUE;
}
+static void r300_render_condition(struct pipe_context *pipe,
+ struct pipe_query *query,
+ uint mode)
+{
+ struct r300_context *r300 = r300_context(pipe);
+ uint64_t result;
+ boolean wait;
+
+ if (query) {
+ wait = mode == PIPE_RENDER_COND_WAIT ||
+ mode == PIPE_RENDER_COND_BY_REGION_WAIT;
+
+ if (!r300_get_query_result(pipe, query, wait, &result)) {
+ r300->skip_rendering = FALSE;
+ }
+
+ r300->skip_rendering = result == 0;
+ } else {
+ r300->skip_rendering = FALSE;
+ }
+}
+
void r300_init_query_functions(struct r300_context* r300) {
r300->context.create_query = r300_create_query;
r300->context.destroy_query = r300_destroy_query;
r300->context.begin_query = r300_begin_query;
r300->context.end_query = r300_end_query;
r300->context.get_query_result = r300_get_query_result;
+ r300->context.render_condition = r300_render_condition;
}
diff --git a/src/gallium/drivers/r300/r300_render.c b/src/gallium/drivers/r300/r300_render.c
index 1fb7eac..7898329 100644
--- a/src/gallium/drivers/r300/r300_render.c
+++ b/src/gallium/drivers/r300/r300_render.c
@@ -427,6 +427,10 @@ void r300_draw_range_elements(struct pipe_context* pipe,
#endif
unsigned short_count;
+ if (r300->skip_rendering) {
+ return;
+ }
+
if (!u_trim_pipe_prim(mode, &count)) {
return;
}
@@ -503,6 +507,10 @@ void r300_draw_arrays(struct pipe_context* pipe, unsigned mode,
#endif
unsigned short_count;
+ if (r300->skip_rendering) {
+ return;
+ }
+
if (!u_trim_pipe_prim(mode, &count)) {
return;
}
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