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r300g: add conditional rendering

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This commit is contained in:
Marek Olšák 2010-04-04 08:59:09 +02:00
parent 116c99768e
commit 655fe28155
3 changed files with 33 additions and 0 deletions
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2
src/gallium/drivers/r300/r300_context.h
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@ -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;

23
src/gallium/drivers/r300/r300_query.c
View file

@ -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;
}

8
src/gallium/drivers/r300/r300_render.c
View file

@ -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;
}