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mpv/video/out/opengl/utils.h
Niklas Haas dd78cc6fe7 vo_opengl: refactor vo performance subsystem 
This replaces `vo-performance` by `vo-passes`, bringing with it a number
of changes and improvements:

1. mpv users can now introspect the vo_opengl passes, which is something
   that has been requested multiple times.

2. performance data is now measured per-pass, which helps both
   development and debugging.

3. since adding more passes is cheap, we can now report information for
   more passes (e.g. the blit pass, and the osd pass). Note: we also
   switch to nanosecond scale, to be able to measure these passes
   better.

4. `--user-shaders` authors can now describe their own passes, helping
   users both identify which user shaders are active at any given time
   as well as helping shader authors identify performance issues.

5. the timing data per pass is now exported as a full list of samples,
   so projects like Argon-/mpv-stats can immediately read out all of the
   samples and render a graph without having to manually poll this
   option constantly.

Due to gl_timer's design being complicated (directly reading performance
data would block, so we delay the actual read-back until the next _start
command), it's vital not to conflate different passes that might be
doing different things from one frame to another. To accomplish this,
the actual timers are stored as part of the gl_shader_cache's sc_entry,
which makes them unique for that exact shader.

Starting and stopping the time measurement is easy to unify with the
gl_sc architecture, because the existing API already relies on a
"generate, render, reset" flow, so we can just put timer_start and
timer_stop in sc_generate and sc_reset, respectively.

The ugliest thing about this code is that due to the need to keep pass
information relatively stable in between frames, we need to distinguish
between "new" and "redrawn" frames, which bloats the code somewhat and
also feels hacky and vo_opengl-specific. (But then again, this entire
thing is vo_opengl-specific)
2017-07-01 00:58:27 +02:00

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/*
* This file is part of mpv.
* Parts based on MPlayer code by Reimar Döffinger.
*
* mpv is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* mpv is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with mpv. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef MP_GL_UTILS_
#define MP_GL_UTILS_
#include "common.h"
#include "math.h"
struct mp_log;
void gl_check_error(GL *gl, struct mp_log *log, const char *info);
void gl_upload_tex(GL *gl, GLenum target, GLenum format, GLenum type,
const void *dataptr, int stride,
int x, int y, int w, int h);
mp_image_t *gl_read_fbo_contents(GL *gl, int fbo, int w, int h);
const char* mp_sampler_type(GLenum texture_target);
// 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);
struct gl_vao_entry {
// used for shader / glBindAttribLocation
const char *name;
// glVertexAttribPointer() arguments
int num_elems; // size (number of elements)
GLenum type;
bool normalized;
int offset;
};
struct gl_vao {
GL *gl;
GLuint vao; // the VAO object, or 0 if unsupported by driver
GLuint buffer; // GL_ARRAY_BUFFER used for the data
int stride; // size of each element (interleaved elements are assumed)
const struct gl_vao_entry *entries;
};
void gl_vao_init(struct gl_vao *vao, GL *gl, int stride,
const struct gl_vao_entry *entries);
void gl_vao_uninit(struct gl_vao *vao);
void gl_vao_bind(struct gl_vao *vao);
void gl_vao_unbind(struct gl_vao *vao);
void gl_vao_draw_data(struct gl_vao *vao, GLenum prim, void *ptr, size_t num);
struct fbotex {
GL *gl;
GLuint fbo;
GLuint texture;
GLenum iformat;
GLenum tex_filter;
int rw, rh; // real (texture) size
int lw, lh; // logical (configured) size
};
bool fbotex_init(struct fbotex *fbo, GL *gl, struct mp_log *log, int w, int h,
GLenum iformat);
void fbotex_uninit(struct fbotex *fbo);
bool fbotex_change(struct fbotex *fbo, GL *gl, struct mp_log *log, int w, int h,
GLenum iformat, int flags);
#define FBOTEX_FUZZY_W 1
#define FBOTEX_FUZZY_H 2
#define FBOTEX_FUZZY (FBOTEX_FUZZY_W | FBOTEX_FUZZY_H)
void fbotex_set_filter(struct fbotex *fbo, GLenum gl_filter);
void fbotex_invalidate(struct fbotex *fbo);
// 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_set_debug_logger(GL *gl, struct mp_log *log);
struct gl_shader_cache;
struct gl_shader_cache *gl_sc_create(GL *gl, struct mp_log *log);
void gl_sc_destroy(struct gl_shader_cache *sc);
bool gl_sc_error_state(struct gl_shader_cache *sc);
void gl_sc_reset_error(struct gl_shader_cache *sc);
void gl_sc_add(struct gl_shader_cache *sc, const char *text);
void gl_sc_addf(struct gl_shader_cache *sc, const char *textf, ...);
void gl_sc_hadd(struct gl_shader_cache *sc, const char *text);
void gl_sc_haddf(struct gl_shader_cache *sc, const char *textf, ...);
void gl_sc_hadd_bstr(struct gl_shader_cache *sc, struct bstr text);
void gl_sc_uniform_sampler(struct gl_shader_cache *sc, char *name, GLenum target,
int unit);
void gl_sc_uniform_tex(struct gl_shader_cache *sc, char *name, GLenum target,
GLuint texture);
void gl_sc_uniform_tex_ui(struct gl_shader_cache *sc, char *name, GLuint texture);
void gl_sc_uniform_f(struct gl_shader_cache *sc, char *name, GLfloat f);
void gl_sc_uniform_i(struct gl_shader_cache *sc, char *name, GLint f);
void gl_sc_uniform_vec2(struct gl_shader_cache *sc, char *name, GLfloat f[2]);
void gl_sc_uniform_vec3(struct gl_shader_cache *sc, char *name, GLfloat f[3]);
void gl_sc_uniform_mat2(struct gl_shader_cache *sc, char *name,
bool transpose, GLfloat *v);
void gl_sc_uniform_mat3(struct gl_shader_cache *sc, char *name,
bool transpose, GLfloat *v);
void gl_sc_set_vao(struct gl_shader_cache *sc, struct gl_vao *vao);
void gl_sc_enable_extension(struct gl_shader_cache *sc, char *name);
struct mp_pass_perf gl_sc_generate(struct gl_shader_cache *sc);
void gl_sc_reset(struct gl_shader_cache *sc);
struct mpv_global;
void gl_sc_set_cache_dir(struct gl_shader_cache *sc, struct mpv_global *global,
const char *dir);
struct gl_timer;
struct gl_timer *gl_timer_create(GL *gl);
void gl_timer_free(struct gl_timer *timer);
void gl_timer_start(struct gl_timer *timer);
void gl_timer_stop(GL *gl);
struct mp_pass_perf gl_timer_measure(struct gl_timer *timer);
#define NUM_PBO_BUFFERS 3
struct gl_pbo_upload {
GL *gl;
int index;
GLuint buffers[NUM_PBO_BUFFERS];
size_t buffer_size;
};
void gl_pbo_upload_tex(struct gl_pbo_upload *pbo, GL *gl, bool use_pbo,
GLenum target, GLenum format, GLenum type,
int tex_w, int tex_h, const void *dataptr, int stride,
int x, int y, int w, int h);
void gl_pbo_upload_uninit(struct gl_pbo_upload *pbo);
int gl_determine_16bit_tex_depth(GL *gl);
int gl_get_fb_depth(GL *gl, int fbo);
#endif
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