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vo_gpu: opengl: add hack for ancient Mesa/GLX 

glx.h recursively includes gl.h, and there is no way to prevent this.
Old Mesa defines some GL symbols, but not all which mpv needs. In
particular, one user who was too lazy to update his ancient Ubuntu and
preferred to bother us with obscure bug reports, had Mesa headers which
did not define GL 3.2, so GLsync was not defined.

All in all I still think the idea of providing the GL API definitions
ourselves was a good idea; just GLX should have been isolated better.
But isolating GLX now is too much effort.

Not sure why I'm bothering with this at all.

Fixes: #7201 (unconfirmed)
This commit is contained in:
wm4 2019-11-30 13:38:28 +01:00
parent 8614cb38d9
commit fa9a1ff0a0
1 changed files with 47 additions and 23 deletions
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70
video/out/opengl/gl_headers.h
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@ -28,6 +28,53 @@
#endif
#endif
// Typedefs. This needs to work with system headers too (consider GLX), and
// before C11, duplicated typedefs were an error. So try to tolerate at least
// Mesa.
#ifdef GL_TRUE
// Tolerate old Mesa which has only definitions up to GL 2.0.
#define MP_GET_GL_TYPES_2_0 0
#ifdef GL_VERSION_3_2
#define MP_GET_GL_TYPES_3_2 0
#else
#define MP_GET_GL_TYPES_3_2 1
#endif
#else
// Get them all.
#define MP_GET_GL_TYPES_2_0 1
#define MP_GET_GL_TYPES_3_2 1
#endif
#if MP_GET_GL_TYPES_2_0
// GL_VERSION_1_0, GL_ES_VERSION_2_0
typedef unsigned int GLbitfield;
typedef unsigned char GLboolean;
typedef unsigned int GLenum;
typedef float GLfloat;
typedef int GLint;
typedef int GLsizei;
typedef uint8_t GLubyte;
typedef unsigned int GLuint;
typedef void GLvoid;
// GL 1.1 GL_VERSION_1_1, GL_ES_VERSION_2_0
typedef float GLclampf;
// GL 1.5 GL_VERSION_1_5, GL_ES_VERSION_2_0
typedef intptr_t GLintptr;
typedef ptrdiff_t GLsizeiptr;
// GL 2.0 GL_VERSION_2_0, GL_ES_VERSION_2_0
typedef int8_t GLbyte;
typedef char GLchar;
typedef short GLshort;
typedef unsigned short GLushort;
#endif
#if MP_GET_GL_TYPES_3_2
// GL 3.2 GL_VERSION_3_2, GL_ES_VERSION_2_0
typedef int64_t GLint64;
typedef struct __GLsync *GLsync;
typedef uint64_t GLuint64;
#endif
// --- GL 1.1
#define GL_BACK_LEFT 0x0402
@ -118,29 +165,6 @@
// ---- GLES 2
#ifndef GL_TRUE
typedef int8_t GLbyte;
typedef float GLclampf;
typedef int32_t GLfixed;
typedef short GLshort;
typedef unsigned short GLushort;
typedef void GLvoid;
typedef struct __GLsync *GLsync;
typedef int64_t GLint64;
typedef uint64_t GLuint64;
typedef unsigned int GLenum;
typedef unsigned int GLuint;
typedef char GLchar;
typedef float GLfloat;
typedef ptrdiff_t GLsizeiptr;
typedef intptr_t GLintptr;
typedef unsigned int GLbitfield;
typedef int GLint;
typedef unsigned char GLboolean;
typedef int GLsizei;
typedef uint8_t GLubyte;
#endif
#define GL_DEPTH_BUFFER_BIT 0x00000100
#define GL_STENCIL_BUFFER_BIT 0x00000400
#define GL_COLOR_BUFFER_BIT 0x00004000