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ilo: skip state emission when reducing sampler count

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When the number of sampler states bound is reduced, we are good to keep
referencing the old SAMPLER_STATE array and skip emitting a new one.
This commit is contained in:
Chia-I Wu 2013-08-07 17:16:46 +08:00
parent 2811dba1d0
commit 7ce3cbaacf
1 changed files with 29 additions and 19 deletions
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48
src/gallium/drivers/ilo/ilo_state.c
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@ -240,19 +240,31 @@ ilo_create_sampler_state(struct pipe_context *pipe,
return sampler;
}
static void
static bool
ilo_bind_sampler_states(struct pipe_context *pipe, unsigned shader,
unsigned start, unsigned count, void **samplers)
{
struct ilo_context *ilo = ilo_context(pipe);
struct ilo_sampler_state *dst = &ilo->sampler[shader];
bool changed = false;
unsigned i;
assert(start + count <= Elements(dst->cso));
if (samplers) {
for (i = 0; i < count; i++)
dst->cso[start + i] = samplers[i];
for (i = 0; i < count; i++) {
if (dst->cso[start + i] != samplers[i]) {
dst->cso[start + i] = samplers[i];
/*
* This function is sometimes called to reduce the number of bound
* samplers. Do not consider that as a state change (and create a
* new array of SAMPLER_STATE).
*/
if (samplers[i])
changed = true;
}
}
}
else {
for (i = 0; i < count; i++)
@ -270,6 +282,8 @@ ilo_bind_sampler_states(struct pipe_context *pipe, unsigned shader,
dst->count = count;
}
return changed;
}
static void
@ -279,15 +293,14 @@ ilo_bind_fragment_sampler_states(struct pipe_context *pipe,
{
struct ilo_context *ilo = ilo_context(pipe);
ilo_bind_sampler_states(pipe, PIPE_SHADER_FRAGMENT,
0, num_samplers, samplers);
if (ilo_bind_sampler_states(pipe, PIPE_SHADER_FRAGMENT,
0, num_samplers, samplers))
ilo->dirty |= ILO_DIRTY_SAMPLER_FS;
if (ilo->sampler[PIPE_SHADER_FRAGMENT].count > num_samplers) {
ilo_bind_sampler_states(pipe, PIPE_SHADER_FRAGMENT, num_samplers,
ilo->sampler[PIPE_SHADER_FRAGMENT].count - num_samplers, NULL);
}
ilo->dirty |= ILO_DIRTY_SAMPLER_FS;
}
static void
@ -297,15 +310,14 @@ ilo_bind_vertex_sampler_states(struct pipe_context *pipe,
{
struct ilo_context *ilo = ilo_context(pipe);
ilo_bind_sampler_states(pipe, PIPE_SHADER_VERTEX,
0, num_samplers, samplers);
if (ilo_bind_sampler_states(pipe, PIPE_SHADER_VERTEX,
0, num_samplers, samplers))
ilo->dirty |= ILO_DIRTY_SAMPLER_VS;
if (ilo->sampler[PIPE_SHADER_VERTEX].count > num_samplers) {
ilo_bind_sampler_states(pipe, PIPE_SHADER_VERTEX, num_samplers,
ilo->sampler[PIPE_SHADER_VERTEX].count - num_samplers, NULL);
}
ilo->dirty |= ILO_DIRTY_SAMPLER_VS;
}
static void
@ -315,15 +327,14 @@ ilo_bind_geometry_sampler_states(struct pipe_context *pipe,
{
struct ilo_context *ilo = ilo_context(pipe);
ilo_bind_sampler_states(pipe, PIPE_SHADER_GEOMETRY,
0, num_samplers, samplers);
if (ilo_bind_sampler_states(pipe, PIPE_SHADER_GEOMETRY,
0, num_samplers, samplers))
ilo->dirty |= ILO_DIRTY_SAMPLER_GS;
if (ilo->sampler[PIPE_SHADER_GEOMETRY].count > num_samplers) {
ilo_bind_sampler_states(pipe, PIPE_SHADER_GEOMETRY, num_samplers,
ilo->sampler[PIPE_SHADER_GEOMETRY].count - num_samplers, NULL);
}
ilo->dirty |= ILO_DIRTY_SAMPLER_GS;
}
static void
@ -334,10 +345,9 @@ ilo_bind_compute_sampler_states(struct pipe_context *pipe,
{
struct ilo_context *ilo = ilo_context(pipe);
ilo_bind_sampler_states(pipe, PIPE_SHADER_COMPUTE,
start_slot, num_samplers, samplers);
ilo->dirty |= ILO_DIRTY_SAMPLER_CS;
if (ilo_bind_sampler_states(pipe, PIPE_SHADER_COMPUTE,
start_slot, num_samplers, samplers))
ilo->dirty |= ILO_DIRTY_SAMPLER_CS;
}
static void