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author | Niklas Haas <git@haasn.xyz> | 2017-09-14 08:04:55 +0200 |
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committer | Niklas Haas <git@haasn.xyz> | 2017-09-21 15:00:55 +0200 |
commit | 65979986a923a8f08019b257c3fe72cd5e8ecf68 (patch) | |
tree | b8f4b8c17d583594aef0ca509064f8b2ff7128d4 /video/out/gpu/user_shaders.h | |
parent | 20f958c9775652c3213588c2a0824f5353276adc (diff) | |
download | mpv-65979986a923a8f08019b257c3fe72cd5e8ecf68.tar.bz2 mpv-65979986a923a8f08019b257c3fe72cd5e8ecf68.tar.xz |
vo_opengl: refactor into vo_gpu
This is done in several steps:
1. refactor MPGLContext -> struct ra_ctx
2. move GL-specific stuff in vo_opengl into opengl/context.c
3. generalize context creation to support other APIs, and add --gpu-api
4. rename all of the --opengl- options that are no longer opengl-specific
5. move all of the stuff from opengl/* that isn't GL-specific into gpu/
(note: opengl/gl_utils.h became opengl/utils.h)
6. rename vo_opengl to vo_gpu
7. to handle window screenshots, the short-term approach was to just add
it to ra_swchain_fns. Long term (and for vulkan) this has to be moved to
ra itself (and vo_gpu altered to compensate), but this was a stop-gap
measure to prevent this commit from getting too big
8. move ra->fns->flush to ra_gl_ctx instead
9. some other minor changes that I've probably already forgotten
Note: This is one half of a major refactor, the other half of which is
provided by rossy's following commit. This commit enables support for
all linux platforms, while his version enables support for all non-linux
platforms.
Note 2: vo_opengl_cb.c also re-uses ra_gl_ctx so it benefits from the
--opengl- options like --opengl-early-flush, --opengl-finish etc. Should
be a strict superset of the old functionality.
Disclaimer: Since I have no way of compiling mpv on all platforms, some
of these ports were done blindly. Specifically, the blind ports included
context_mali_fbdev.c and context_rpi.c. Since they're both based on
egl_helpers, the port should have gone smoothly without any major
changes required. But if somebody complains about a compile error on
those platforms (assuming anybody actually uses them), you know where to
complain.
Diffstat (limited to 'video/out/gpu/user_shaders.h')
-rw-r--r-- | video/out/gpu/user_shaders.h | 98 |
1 files changed, 98 insertions, 0 deletions
diff --git a/video/out/gpu/user_shaders.h b/video/out/gpu/user_shaders.h new file mode 100644 index 0000000000..94a070c8e2 --- /dev/null +++ b/video/out/gpu/user_shaders.h @@ -0,0 +1,98 @@ +/* + * This file is part of mpv. + * + * 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_USER_SHADERS_H +#define MP_GL_USER_SHADERS_H + +#include "utils.h" +#include "ra.h" + +#define SHADER_MAX_PASSES 32 +#define SHADER_MAX_HOOKS 16 +#define SHADER_MAX_BINDS 6 +#define SHADER_MAX_SAVED 64 +#define MAX_SZEXP_SIZE 32 + +enum szexp_op { + SZEXP_OP_ADD, + SZEXP_OP_SUB, + SZEXP_OP_MUL, + SZEXP_OP_DIV, + SZEXP_OP_NOT, + SZEXP_OP_GT, + SZEXP_OP_LT, +}; + +enum szexp_tag { + SZEXP_END = 0, // End of an RPN expression + SZEXP_CONST, // Push a constant value onto the stack + SZEXP_VAR_W, // Get the width/height of a named texture (variable) + SZEXP_VAR_H, + SZEXP_OP2, // Pop two elements and push the result of a dyadic operation + SZEXP_OP1, // Pop one element and push the result of a monadic operation +}; + +struct szexp { + enum szexp_tag tag; + union { + float cval; + struct bstr varname; + enum szexp_op op; + } val; +}; + +struct compute_info { + bool active; + int block_w, block_h; // Block size (each block corresponds to one WG) + int threads_w, threads_h; // How many threads form a working group + bool directly_writes; // If true, shader is assumed to imageStore(out_image) +}; + +struct gl_user_shader_hook { + struct bstr pass_desc; + struct bstr hook_tex[SHADER_MAX_HOOKS]; + struct bstr bind_tex[SHADER_MAX_BINDS]; + struct bstr save_tex; + struct bstr pass_body; + struct gl_transform offset; + struct szexp width[MAX_SZEXP_SIZE]; + struct szexp height[MAX_SZEXP_SIZE]; + struct szexp cond[MAX_SZEXP_SIZE]; + int components; + struct compute_info compute; +}; + +struct gl_user_shader_tex { + struct bstr name; + struct ra_tex_params params; + // for video.c + struct ra_tex *tex; +}; + +// Parse the next shader block from `body`. The callbacks are invoked on every +// valid shader block parsed. +void parse_user_shader(struct mp_log *log, struct ra *ra, struct bstr shader, + void *priv, + bool (*dohook)(void *p, struct gl_user_shader_hook hook), + bool (*dotex)(void *p, struct gl_user_shader_tex tex)); + +// Evaluate a szexp, given a lookup function for named textures +bool eval_szexpr(struct mp_log *log, void *priv, + bool (*lookup)(void *priv, struct bstr var, float size[2]), + struct szexp expr[MAX_SZEXP_SIZE], float *result); + +#endif |