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gallium: avoid redundant tgsi_exec_machine_bind_shader() calls on draw exec path

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tgsi_exec_machine_bind_shader() isn't cheap so avoiding unecessary calls
is a big win.
A similar change should be done for softpipe's fragment exec path but
extra care needs to be taken with the texture sampler state/params.
This commit is contained in:
Brian Paul 2008-09-12 11:42:33 -06:00
parent bd34b8a4fe
commit 9defef29c5
1 changed files with 11 additions and 6 deletions
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17
src/gallium/auxiliary/draw/draw_vs_exec.c
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@ -46,6 +46,7 @@
struct exec_vertex_shader {
struct draw_vertex_shader base;
struct tgsi_exec_machine *machine;
struct tgsi_token *machine_tokens;
};
static struct exec_vertex_shader *exec_vertex_shader( struct draw_vertex_shader *vs )
@ -62,12 +63,16 @@ vs_exec_prepare( struct draw_vertex_shader *shader,
{
struct exec_vertex_shader *evs = exec_vertex_shader(shader);
/* specify the vertex program to interpret/execute */
tgsi_exec_machine_bind_shader(evs->machine,
shader->state.tokens,
PIPE_MAX_SAMPLERS,
NULL /*samplers*/ );
/* Specify the vertex program to interpret/execute.
* Avoid rebinding when possible.
*/
if (evs->machine_tokens != shader->state.tokens) {
tgsi_exec_machine_bind_shader(evs->machine,
shader->state.tokens,
PIPE_MAX_SAMPLERS,
NULL /*samplers*/ );
evs->machine_tokens = shader->state.tokens;
}
}