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