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mpv/video/out/gl_common.h
wm4 979ce46c64 gl_common: get rid of symbol redefinition warnings with recent Mesa 
Apparently newer Mesa versions changed their <GL/glx.h> header, and
unconditionally define GLX_CONTEXT_MAJOR_VERSION_ARB and others. This
clashed with gl_header_fixes.h, a header which quarantines bad hacks
to make compilation possible on systems with outdated GL headers.
Specifically, our header was included before glx.h, so the hacks were
always active, and somehow Mesa's glx.h used to deal with this by not
redefining existing identifiers.

Fix the gl_header_fixes.h logic so the hacks are checked after including
glx.h.
2013-03-03 15:36:56 +01:00

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/*
* This file is part of MPlayer.
*
* MPlayer is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* MPlayer 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with MPlayer; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* You can alternatively redistribute this file 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.
*/
#ifndef MPLAYER_GL_COMMON_H
#define MPLAYER_GL_COMMON_H
#include <stdio.h>
#include <stdint.h>
#include "config.h"
#include "core/mp_msg.h"
#include "vo.h"
#include "video/csputils.h"
#include "video/mp_image.h"
#if defined(CONFIG_GL_COCOA) && !defined(CONFIG_GL_X11)
#ifdef GL_VERSION_3_0
#include <OpenGL/gl3.h>
#else
#include <OpenGL/gl.h>
#endif
#include <OpenGL/glext.h>
#else
#include <GL/gl.h>
#include <GL/glext.h>
#endif
#define MP_GET_GL_WORKAROUNDS
#include "video/out/gl_header_fixes.h"
struct GL;
typedef struct GL GL;
void glAdjustAlignment(GL *gl, int stride);
int glFmt2bpp(GLenum format, GLenum type);
void glUploadTex(GL *gl, GLenum target, GLenum format, GLenum type,
const void *dataptr, int stride,
int x, int y, int w, int h, int slice);
void glClearTex(GL *gl, GLenum target, GLenum format, GLenum type,
int x, int y, int w, int h, uint8_t val, void **scratch);
void glDownloadTex(GL *gl, GLenum target, GLenum format, GLenum type,
void *dataptr, int stride);
void glCheckError(GL *gl, const char *info);
mp_image_t *glGetWindowScreenshot(GL *gl);
#define GL_3D_RED_CYAN 1
#define GL_3D_GREEN_MAGENTA 2
#define GL_3D_QUADBUFFER 3
void glEnable3DLeft(GL *gl, int type);
void glEnable3DRight(GL *gl, int type);
void glDisable3D(GL *gl, int type);
enum MPGLType {
GLTYPE_AUTO,
GLTYPE_COCOA,
GLTYPE_W32,
GLTYPE_X11,
GLTYPE_WAYLAND,
};
enum {
MPGL_CAP_GL = (1 << 0), // GL was successfully loaded
MPGL_CAP_GL_LEGACY = (1 << 1), // GL 1.1 (but not 3.x)
MPGL_CAP_GL2 = (1 << 2), // GL 2.0 (3.x core subset)
MPGL_CAP_GL21 = (1 << 3), // GL 2.1 (3.x core subset)
MPGL_CAP_GL3 = (1 << 4), // GL 3.x core
MPGL_CAP_FB = (1 << 5),
MPGL_CAP_VAO = (1 << 6),
MPGL_CAP_SRGB_TEX = (1 << 7),
MPGL_CAP_SRGB_FB = (1 << 8),
MPGL_CAP_FLOAT_TEX = (1 << 9),
MPGL_CAP_TEX_RG = (1 << 10), // GL_ARB_texture_rg / GL 3.x
MPGL_CAP_NO_SW = (1 << 30), // used to block sw. renderers
};
#define MPGL_VER(major, minor) (((major) << 16) | (minor))
#define MPGL_VER_GET_MAJOR(ver) ((ver) >> 16)
#define MPGL_VER_GET_MINOR(ver) ((ver) & ((1 << 16) - 1))
#define MPGL_VER_P(ver) MPGL_VER_GET_MAJOR(ver), MPGL_VER_GET_MINOR(ver)
typedef struct MPGLContext {
GL *gl;
enum MPGLType type;
struct vo *vo;
// Bit size of each component in the created framebuffer. 0 if unknown.
int depth_r, depth_g, depth_b;
// GL version requested from config_window_gl3 backend (MPGL_VER mangled).
// (Might be different from the actual version in gl->version.)
int requested_gl_version;
void (*swapGlBuffers)(struct MPGLContext *);
int (*check_events)(struct vo *vo);
void (*fullscreen)(struct vo *vo);
int (*vo_init)(struct vo *vo);
void (*vo_uninit)(struct vo *vo);
void (*releaseGlContext)(struct MPGLContext *);
// Resize the window, or create a new window if there isn't one yet.
// On the first call, it creates a GL context according to what's specified
// in MPGLContext.requested_gl_version. This is just a hint, and if the
// requested version is not available, it may return a completely different
// GL context. (The caller must check if the created GL version is ok. The
// callee must try to fall back to an older version if the requested
// version is not available, and newer versions are incompatible.)
bool (*config_window)(struct MPGLContext *ctx, uint32_t d_width,
uint32_t d_height, uint32_t flags);
// optional
void (*pause)(struct vo *vo);
void (*resume)(struct vo *vo);
void (*ontop)(struct vo *vo);
void (*border)(struct vo *vo);
void (*update_xinerama_info)(struct vo *vo);
// For free use by the backend.
void *priv;
} MPGLContext;
int mpgl_find_backend(const char *name);
MPGLContext *mpgl_init(enum MPGLType type, struct vo *vo);
void mpgl_uninit(MPGLContext *ctx);
// Create a VO window and create a GL context on it.
// (Calls config_window_gl3 or config_window+setGlWindow.)
// gl_caps: bitfield of MPGL_CAP_* (required GL version and feature set)
// flags: passed to the backend's create window function
// Returns success.
bool mpgl_config_window(struct MPGLContext *ctx, int gl_caps, uint32_t d_width,
uint32_t d_height, uint32_t flags);
// print a multi line string with line numbers (e.g. for shader sources)
// mod, lev: module and log level, as in mp_msg()
void mp_log_source(int mod, int lev, const char *src);
//function pointers loaded from the OpenGL library
struct GL {
int version; // MPGL_VER() mangled
int glsl_version; // e.g. 130 for GLSL 1.30
char *extensions; // Equivalent to GL_EXTENSIONS
int mpgl_caps; // Bitfield of MPGL_CAP_* constants
void (GLAPIENTRY *Begin)(GLenum);
void (GLAPIENTRY *End)(void);
void (GLAPIENTRY *Viewport)(GLint, GLint, GLsizei, GLsizei);
void (GLAPIENTRY *MatrixMode)(GLenum);
void (GLAPIENTRY *LoadIdentity)(void);
void (GLAPIENTRY *Translated)(double, double, double);
void (GLAPIENTRY *Scaled)(double, double, double);
void (GLAPIENTRY *Ortho)(double, double, double, double, double,double);
void (GLAPIENTRY *PushMatrix)(void);
void (GLAPIENTRY *PopMatrix)(void);
void (GLAPIENTRY *Clear)(GLbitfield);
GLuint (GLAPIENTRY *GenLists)(GLsizei);
void (GLAPIENTRY *DeleteLists)(GLuint, GLsizei);
void (GLAPIENTRY *NewList)(GLuint, GLenum);
void (GLAPIENTRY *EndList)(void);
void (GLAPIENTRY *CallList)(GLuint);
void (GLAPIENTRY *CallLists)(GLsizei, GLenum, const GLvoid *);
void (GLAPIENTRY *GenTextures)(GLsizei, GLuint *);
void (GLAPIENTRY *DeleteTextures)(GLsizei, const GLuint *);
void (GLAPIENTRY *TexEnvi)(GLenum, GLenum, GLint);
void (GLAPIENTRY *Color4ub)(GLubyte, GLubyte, GLubyte, GLubyte);
void (GLAPIENTRY *Color4f)(GLfloat, GLfloat, GLfloat, GLfloat);
void (GLAPIENTRY *ClearColor)(GLclampf, GLclampf, GLclampf, GLclampf);
void (GLAPIENTRY *Enable)(GLenum);
void (GLAPIENTRY *Disable)(GLenum);
const GLubyte *(GLAPIENTRY * GetString)(GLenum);
void (GLAPIENTRY *DrawBuffer)(GLenum);
void (GLAPIENTRY *DepthMask)(GLboolean);
void (GLAPIENTRY *BlendFunc)(GLenum, GLenum);
void (GLAPIENTRY *Flush)(void);
void (GLAPIENTRY *Finish)(void);
void (GLAPIENTRY *PixelStorei)(GLenum, GLint);
void (GLAPIENTRY *TexImage1D)(GLenum, GLint, GLint, GLsizei, GLint,
GLenum, GLenum, const GLvoid *);
void (GLAPIENTRY *TexImage2D)(GLenum, GLint, GLint, GLsizei, GLsizei,
GLint, GLenum, GLenum, const GLvoid *);
void (GLAPIENTRY *TexSubImage2D)(GLenum, GLint, GLint, GLint,
GLsizei, GLsizei, GLenum, GLenum,
const GLvoid *);
void (GLAPIENTRY *GetTexImage)(GLenum, GLint, GLenum, GLenum, GLvoid *);
void (GLAPIENTRY *TexParameteri)(GLenum, GLenum, GLint);
void (GLAPIENTRY *TexParameterf)(GLenum, GLenum, GLfloat);
void (GLAPIENTRY *TexParameterfv)(GLenum, GLenum, const GLfloat *);
void (GLAPIENTRY *TexCoord2f)(GLfloat, GLfloat);
void (GLAPIENTRY *TexCoord2fv)(const GLfloat *);
void (GLAPIENTRY *Vertex2f)(GLfloat, GLfloat);
void (GLAPIENTRY *GetIntegerv)(GLenum, GLint *);
void (GLAPIENTRY *GetBooleanv)(GLenum, GLboolean *);
void (GLAPIENTRY *ColorMask)(GLboolean, GLboolean, GLboolean, GLboolean);
void (GLAPIENTRY *ReadPixels)(GLint, GLint, GLsizei, GLsizei, GLenum,
GLenum, GLvoid *);
void (GLAPIENTRY *ReadBuffer)(GLenum);
void (GLAPIENTRY *VertexPointer)(GLint, GLenum, GLsizei, const GLvoid *);
void (GLAPIENTRY *ColorPointer)(GLint, GLenum, GLsizei, const GLvoid *);
void (GLAPIENTRY *TexCoordPointer)(GLint, GLenum, GLsizei, const GLvoid *);
void (GLAPIENTRY *DrawArrays)(GLenum, GLint, GLsizei);
void (GLAPIENTRY *EnableClientState)(GLenum);
void (GLAPIENTRY *DisableClientState)(GLenum);
GLenum (GLAPIENTRY *GetError)(void);
void (GLAPIENTRY *GetTexLevelParameteriv)(GLenum, GLint, GLenum, GLint *);
void (GLAPIENTRY *GenBuffers)(GLsizei, GLuint *);
void (GLAPIENTRY *DeleteBuffers)(GLsizei, const GLuint *);
void (GLAPIENTRY *BindBuffer)(GLenum, GLuint);
GLvoid * (GLAPIENTRY * MapBuffer)(GLenum, GLenum);
GLboolean (GLAPIENTRY *UnmapBuffer)(GLenum);
void (GLAPIENTRY *BufferData)(GLenum, intptr_t, const GLvoid *, GLenum);
void (GLAPIENTRY *ActiveTexture)(GLenum);
void (GLAPIENTRY *BindTexture)(GLenum, GLuint);
void (GLAPIENTRY *MultiTexCoord2f)(GLenum, GLfloat, GLfloat);
void (GLAPIENTRY *GenPrograms)(GLsizei, GLuint *);
void (GLAPIENTRY *DeletePrograms)(GLsizei, const GLuint *);
void (GLAPIENTRY *BindProgram)(GLenum, GLuint);
void (GLAPIENTRY *ProgramString)(GLenum, GLenum, GLsizei, const GLvoid *);
void (GLAPIENTRY *GetProgramivARB)(GLenum, GLenum, GLint *);
void (GLAPIENTRY *ProgramEnvParameter4f)(GLenum, GLuint, GLfloat, GLfloat,
GLfloat, GLfloat);
int (GLAPIENTRY *SwapInterval)(int);
void (GLAPIENTRY *TexImage3D)(GLenum, GLint, GLenum, GLsizei, GLsizei,
GLsizei, GLint, GLenum, GLenum,
const GLvoid *);
void (GLAPIENTRY *BeginFragmentShader)(void);
void (GLAPIENTRY *EndFragmentShader)(void);
void (GLAPIENTRY *SampleMap)(GLuint, GLuint, GLenum);
void (GLAPIENTRY *ColorFragmentOp2)(GLenum, GLuint, GLuint, GLuint, GLuint,
GLuint, GLuint, GLuint, GLuint, GLuint);
void (GLAPIENTRY *ColorFragmentOp3)(GLenum, GLuint, GLuint, GLuint, GLuint,
GLuint, GLuint, GLuint, GLuint, GLuint,
GLuint, GLuint, GLuint);
void (GLAPIENTRY *SetFragmentShaderConstant)(GLuint, const GLfloat *);
void (GLAPIENTRY *GenVertexArrays)(GLsizei, GLuint *);
void (GLAPIENTRY *BindVertexArray)(GLuint);
GLint (GLAPIENTRY *GetAttribLocation)(GLuint, const GLchar *);
void (GLAPIENTRY *EnableVertexAttribArray)(GLuint);
void (GLAPIENTRY *DisableVertexAttribArray)(GLuint);
void (GLAPIENTRY *VertexAttribPointer)(GLuint, GLint, GLenum, GLboolean,
GLsizei, const GLvoid *);
void (GLAPIENTRY *DeleteVertexArrays)(GLsizei, const GLuint *);
void (GLAPIENTRY *UseProgram)(GLuint);
GLint (GLAPIENTRY *GetUniformLocation)(GLuint, const GLchar *);
void (GLAPIENTRY *CompileShader)(GLuint);
GLuint (GLAPIENTRY *CreateProgram)(void);
GLuint (GLAPIENTRY *CreateShader)(GLenum);
void (GLAPIENTRY *ShaderSource)(GLuint, GLsizei, const GLchar **,
const GLint *);
void (GLAPIENTRY *LinkProgram)(GLuint);
void (GLAPIENTRY *AttachShader)(GLuint, GLuint);
void (GLAPIENTRY *DeleteShader)(GLuint);
void (GLAPIENTRY *DeleteProgram)(GLuint);
void (GLAPIENTRY *GetShaderInfoLog)(GLuint, GLsizei, GLsizei *, GLchar *);
void (GLAPIENTRY *GetShaderiv)(GLuint, GLenum, GLint *);
void (GLAPIENTRY *GetProgramInfoLog)(GLuint, GLsizei, GLsizei *, GLchar *);
void (GLAPIENTRY *GetProgramiv)(GLenum, GLenum, GLint *);
const GLubyte* (GLAPIENTRY *GetStringi)(GLenum, GLuint);
void (GLAPIENTRY *BindAttribLocation)(GLuint, GLuint, const GLchar *);
void (GLAPIENTRY *BindFramebuffer)(GLenum, GLuint);
void (GLAPIENTRY *GenFramebuffers)(GLsizei, GLuint *);
void (GLAPIENTRY *DeleteFramebuffers)(GLsizei, const GLuint *);
GLenum (GLAPIENTRY *CheckFramebufferStatus)(GLenum);
void (GLAPIENTRY *FramebufferTexture2D)(GLenum, GLenum, GLenum, GLuint,
GLint);
void (GLAPIENTRY *Uniform1f)(GLint, GLfloat);
void (GLAPIENTRY *Uniform2f)(GLint, GLfloat, GLfloat);
void (GLAPIENTRY *Uniform3f)(GLint, GLfloat, GLfloat, GLfloat);
void (GLAPIENTRY *Uniform4f)(GLint, GLfloat, GLfloat, GLfloat, GLfloat);
void (GLAPIENTRY *Uniform1i)(GLint, GLint);
void (GLAPIENTRY *UniformMatrix3fv)(GLint, GLsizei, GLboolean,
const GLfloat *);
void (GLAPIENTRY *UniformMatrix4x3fv)(GLint, GLsizei, GLboolean,
const GLfloat *);
};
#endif /* MPLAYER_GL_COMMON_H */
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