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7b6e3772ab
GLES does not support high bit depth fixed point textures for unknown
reasons, so direct 10 bit input is not possible. But we can still use
integer textures, which are supported by GLES 3.0. These store integer
data just like the standard fixed point textures, except they are not
normalized on sampling. They also don't support bilinear filtering, and
require a special sampler ("usampler2D").
While these texture formats enable us to shuffle the data to the GPU,
they're rather impractical with the requirements mentioned above and our
current architecture. One problem is that most code assumes it can
always use bilinear scaling (even if bilinear is never used when using
appropriate scale/cscale options). Another is that we don't have any
concept of running a function on a texture in an uniform way.
So for now, run a simple conversion step through a FBO. The FBO will use
the rgba16f format normally, which gives enough bits for 10 bit, and
will at least gracefully degrade with higher depth input.
This is bound to be much slower than a more "direct" method, but at
least it works and is simple to implement.
The odd change of function call order in init_video() is to properly
disable "dumb mode" (no FBO use) if these texture formats are in use.
146 lines
5.2 KiB
C
146 lines
5.2 KiB
C
/*
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* This file is part of mpv.
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* Parts based on MPlayer code by Reimar Döffinger.
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*
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* mpv is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* mpv is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with mpv. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef MP_GL_UTILS_
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#define MP_GL_UTILS_
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#include "common.h"
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struct mp_log;
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void glCheckError(GL *gl, struct mp_log *log, const char *info);
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int glFmt2bpp(GLenum format, GLenum type);
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void glUploadTex(GL *gl, GLenum target, GLenum format, GLenum type,
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const void *dataptr, int stride,
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int x, int y, int w, int h, int slice);
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void glClearTex(GL *gl, GLenum target, GLenum format, GLenum type,
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int x, int y, int w, int h, uint8_t val, void **scratch);
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mp_image_t *glGetWindowScreenshot(GL *gl);
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const char* mp_sampler_type(GLenum texture_target);
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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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struct gl_vao_entry {
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// used for shader / glBindAttribLocation
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const char *name;
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// glVertexAttribPointer() arguments
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int num_elems; // size (number of elements)
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GLenum type;
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bool normalized;
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int offset;
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};
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struct gl_vao {
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GL *gl;
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GLuint vao; // the VAO object, or 0 if unsupported by driver
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GLuint buffer; // GL_ARRAY_BUFFER used for the data
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int stride; // size of each element (interleaved elements are assumed)
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const struct gl_vao_entry *entries;
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};
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void gl_vao_init(struct gl_vao *vao, GL *gl, int stride,
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const struct gl_vao_entry *entries);
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void gl_vao_uninit(struct gl_vao *vao);
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void gl_vao_bind(struct gl_vao *vao);
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void gl_vao_unbind(struct gl_vao *vao);
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void gl_vao_draw_data(struct gl_vao *vao, GLenum prim, void *ptr, size_t num);
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struct fbotex {
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GL *gl;
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GLuint fbo;
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GLuint texture;
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GLenum iformat;
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GLenum tex_filter;
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int w, h; // size of .texture
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};
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bool fbotex_init(struct fbotex *fbo, GL *gl, struct mp_log *log, int w, int h,
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GLenum iformat);
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void fbotex_uninit(struct fbotex *fbo);
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bool fbotex_change(struct fbotex *fbo, GL *gl, struct mp_log *log, int w, int h,
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GLenum iformat, int flags);
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#define FBOTEX_FUZZY_W 1
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#define FBOTEX_FUZZY_H 2
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#define FBOTEX_FUZZY (FBOTEX_FUZZY_W | FBOTEX_FUZZY_H)
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void fbotex_set_filter(struct fbotex *fbo, GLenum gl_filter);
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// A 3x2 matrix, with the translation part separate.
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struct gl_transform {
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float m[2][2];
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float t[2];
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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[1][0] + t.t[0];
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*y = vx * t.m[0][1] + 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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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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void gl_transform_trans(struct gl_transform t, struct gl_transform *x);
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void gl_set_debug_logger(GL *gl, struct mp_log *log);
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struct gl_shader_cache;
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struct gl_shader_cache *gl_sc_create(GL *gl, struct mp_log *log);
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void gl_sc_destroy(struct gl_shader_cache *sc);
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void gl_sc_add(struct gl_shader_cache *sc, const char *text);
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void gl_sc_addf(struct gl_shader_cache *sc, const char *textf, ...);
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void gl_sc_hadd(struct gl_shader_cache *sc, const char *text);
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void gl_sc_haddf(struct gl_shader_cache *sc, const char *textf, ...);
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void gl_sc_uniform_sampler(struct gl_shader_cache *sc, char *name, GLenum target,
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int unit);
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void gl_sc_uniform_sampler_ui(struct gl_shader_cache *sc, char *name, int unit);
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void gl_sc_uniform_f(struct gl_shader_cache *sc, char *name, GLfloat f);
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void gl_sc_uniform_i(struct gl_shader_cache *sc, char *name, GLint f);
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void gl_sc_uniform_vec2(struct gl_shader_cache *sc, char *name, GLfloat f[2]);
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void gl_sc_uniform_vec3(struct gl_shader_cache *sc, char *name, GLfloat f[3]);
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void gl_sc_uniform_mat2(struct gl_shader_cache *sc, char *name,
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bool transpose, GLfloat *v);
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void gl_sc_uniform_mat3(struct gl_shader_cache *sc, char *name,
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bool transpose, GLfloat *v);
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void gl_sc_uniform_buffer(struct gl_shader_cache *sc, char *name,
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const char *text, int binding);
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void gl_sc_set_vao(struct gl_shader_cache *sc, struct gl_vao *vao);
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void gl_sc_enable_extension(struct gl_shader_cache *sc, char *name);
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void gl_sc_gen_shader_and_reset(struct gl_shader_cache *sc);
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void gl_sc_reset(struct gl_shader_cache *sc);
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#endif
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