51 lines
2.0 KiB
C
51 lines
2.0 KiB
C
#include <kinc/graphics5/sampler.h>
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#include <assert.h>
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#define MAX_SAMPLERS_PER_STAGE 16
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static kinc_g5_sampler_options_t sampler_options[KINC_G5_SHADER_TYPE_COUNT][MAX_SAMPLERS_PER_STAGE];
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static void samplers_reset(void) {
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for (int i = 0; i < KINC_G5_SHADER_TYPE_COUNT; ++i) {
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for (int j = 0; j < MAX_SAMPLERS_PER_STAGE; ++j) {
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kinc_g5_sampler_options_set_defaults(&sampler_options[i][j]);
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}
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}
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}
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bool sampler_options_equals(kinc_g5_sampler_options_t *options1, kinc_g5_sampler_options_t *options2) {
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return options1->u_addressing == options2->u_addressing && options1->v_addressing == options2->v_addressing &&
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options1->w_addressing == options2->w_addressing && options1->minification_filter == options2->minification_filter &&
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options1->magnification_filter == options2->magnification_filter && options1->mipmap_filter == options2->mipmap_filter &&
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options1->lod_min_clamp == options2->lod_min_clamp && options1->lod_max_clamp == options2->lod_max_clamp &&
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options1->max_anisotropy == options2->max_anisotropy && options1->is_comparison == options2->is_comparison &&
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options1->compare_mode == options2->compare_mode;
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}
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struct sampler_cache_entry {
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kinc_g5_sampler_options_t options;
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kinc_g5_sampler_t sampler;
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};
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#define MAX_SAMPLER_CACHE_SIZE 256
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static struct sampler_cache_entry sampler_cache[MAX_SAMPLER_CACHE_SIZE];
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static int sampler_cache_size = 0;
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// TODO: Please make this much faster
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static kinc_g5_sampler_t *get_current_sampler(int stage, int unit) {
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for (int i = 0; i < sampler_cache_size; ++i) {
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if (sampler_options_equals(&sampler_cache[i].options, &sampler_options[stage][unit])) {
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return &sampler_cache[i].sampler;
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}
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}
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assert(sampler_cache_size < MAX_SAMPLER_CACHE_SIZE);
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kinc_g5_sampler_t *sampler = &sampler_cache[sampler_cache_size].sampler;
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kinc_g5_sampler_init(sampler, &sampler_options[stage][unit]);
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sampler_cache[sampler_cache_size].options = sampler_options[stage][unit];
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sampler_cache_size += 1;
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return sampler;
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}
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