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C
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106#pragma once
#include <stdbool.h>#include <math.h>
#include "ra.h"#include "context.h"
// A 3x2 matrix, with the translation part separate.struct gl_transform { // row-major, e.g. in mathematical notation: // | m[0][0] m[0][1] | // | m[1][0] m[1][1] | float m[2][2]; float t[2];};
static const struct gl_transform identity_trans = { .m = {{1.0, 0.0}, {0.0, 1.0}}, .t = {0.0, 0.0},};
void gl_transform_ortho(struct gl_transform *t, float x0, float x1, float y0, float y1);
// This treats m as an affine transformation, in other words m[2][n] gets// added to the output.static inline void gl_transform_vec(struct gl_transform t, float *x, float *y){ float vx = *x, vy = *y; *x = vx * t.m[0][0] + vy * t.m[0][1] + t.t[0]; *y = vx * t.m[1][0] + vy * t.m[1][1] + t.t[1];}
struct mp_rect_f { float x0, y0, x1, y1;};
// Semantic equality (fuzzy comparison)static inline bool mp_rect_f_seq(struct mp_rect_f a, struct mp_rect_f b){ return fabs(a.x0 - b.x0) < 1e-6 && fabs(a.x1 - b.x1) < 1e-6 && fabs(a.y0 - b.y0) < 1e-6 && fabs(a.y1 - b.y1) < 1e-6;}
static inline void gl_transform_rect(struct gl_transform t, struct mp_rect_f *r){ gl_transform_vec(t, &r->x0, &r->y0); gl_transform_vec(t, &r->x1, &r->y1);}
static inline bool gl_transform_eq(struct gl_transform a, struct gl_transform b){ for (int x = 0; x < 2; x++) { for (int y = 0; y < 2; y++) { if (a.m[x][y] != b.m[x][y]) return false; } }
return a.t[0] == b.t[0] && a.t[1] == b.t[1];}
void gl_transform_trans(struct gl_transform t, struct gl_transform *x);
void gl_transform_ortho_fbo(struct gl_transform *t, struct ra_fbo fbo);
// A pool of buffers, which can grow as neededstruct ra_buf_pool { struct ra_buf_params current_params; struct ra_buf **buffers; int num_buffers; int index;};
void ra_buf_pool_uninit(struct ra *ra, struct ra_buf_pool *pool);
// Note: params->initial_data is *not* supportedstruct ra_buf *ra_buf_pool_get(struct ra *ra, struct ra_buf_pool *pool, const struct ra_buf_params *params);
// Helper that wraps ra_tex_upload using texture upload buffers to ensure that// params->buf is always set. This is intended for RA-internal usage.bool ra_tex_upload_pbo(struct ra *ra, struct ra_buf_pool *pbo, const struct ra_tex_upload_params *params);
// Layout rules for GLSL's packing modesstruct ra_layout std140_layout(struct ra_renderpass_input *inp);struct ra_layout std430_layout(struct ra_renderpass_input *inp);
bool ra_tex_resize(struct ra *ra, struct mp_log *log, struct ra_tex **tex, int w, int h, const struct ra_format *fmt);
// A wrapper around ra_timer that does result pooling, averaging etc.struct timer_pool;
struct timer_pool *timer_pool_create(struct ra *ra);void timer_pool_destroy(struct timer_pool *pool);void timer_pool_start(struct timer_pool *pool);void timer_pool_stop(struct timer_pool *pool);struct mp_pass_perf timer_pool_measure(struct timer_pool *pool);
// print a multi line string with line numbers (e.g. for shader sources)// log, lev: module and log level, as in mp_msg()void mp_log_source(struct mp_log *log, int lev, const char *src);