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mpv/video/out/gl_common.c

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/*
* common OpenGL routines
*
* copyleft (C) 2005-2010 Reimar Döffinger <Reimar.Doeffinger@gmx.de>
* Special thanks go to the xine team and Matthias Hopf, whose video_out_opengl.c
* gave me lots of good ideas.
*
* 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.
*/
/**
* \file gl_common.c
* \brief OpenGL helper functions used by vo_gl.c and vo_gl2.c
*/
#include <stddef.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <ctype.h>
#include <stdbool.h>
#include <math.h>
#include <assert.h>
#include "talloc.h"
#include "gl_common.h"
#include "aspect.h"
#include "core/options.h"
#include "sub/sub.h"
#include "bitmap_packer.h"
//! \defgroup glgeneral OpenGL general helper functions
// GLU has this as gluErrorString (we don't use GLU, as it is legacy-OpenGL)
static const char *gl_error_to_string(GLenum error)
{
switch (error) {
case GL_INVALID_ENUM: return "INVALID_ENUM";
case GL_INVALID_VALUE: return "INVALID_VALUE";
case GL_INVALID_OPERATION: return "INVALID_OPERATION";
case GL_INVALID_FRAMEBUFFER_OPERATION:
return "INVALID_FRAMEBUFFER_OPERATION";
case GL_OUT_OF_MEMORY: return "OUT_OF_MEMORY";
default: return "unknown";
}
}
void glCheckError(GL *gl, const char *info)
{
for (;;) {
GLenum error = gl->GetError();
if (error == GL_NO_ERROR)
break;
mp_msg(MSGT_VO, MSGL_ERR, "[gl] %s: OpenGL error %s.\n", info,
gl_error_to_string(error));
}
}
//! \defgroup glcontext OpenGL context management helper functions
//! \defgroup gltexture OpenGL texture handling helper functions
//! \defgroup glconversion OpenGL conversion helper functions
/**
* \brief adjusts the GL_UNPACK_ALIGNMENT to fit the stride.
* \param stride number of bytes per line for which alignment should fit.
* \ingroup glgeneral
*/
void glAdjustAlignment(GL *gl, int stride)
{
GLint gl_alignment;
if (stride % 8 == 0)
gl_alignment = 8;
else if (stride % 4 == 0)
gl_alignment = 4;
else if (stride % 2 == 0)
gl_alignment = 2;
else
gl_alignment = 1;
gl->PixelStorei(GL_UNPACK_ALIGNMENT, gl_alignment);
gl->PixelStorei(GL_PACK_ALIGNMENT, gl_alignment);
}
struct feature {
int id;
const char *name;
};
static const struct feature features[] = {
{MPGL_CAP_GL, "Basic OpenGL"},
{MPGL_CAP_GL_LEGACY, "Legacy OpenGL"},
{MPGL_CAP_GL2, "OpenGL 2.0"},
{MPGL_CAP_GL21, "OpenGL 2.1"},
{MPGL_CAP_GL3, "OpenGL 3.0"},
{MPGL_CAP_FB, "Framebuffers"},
{MPGL_CAP_VAO, "VAOs"},
{MPGL_CAP_SRGB_TEX, "sRGB textures"},
{MPGL_CAP_SRGB_FB, "sRGB framebuffers"},
{MPGL_CAP_FLOAT_TEX, "Float textures"},
{MPGL_CAP_TEX_RG, "RG textures"},
{MPGL_CAP_NO_SW, "NO_SW"},
{0},
};
static void list_features(int set, int msgl, bool invert)
{
for (const struct feature *f = &features[0]; f->id; f++) {
if (invert == !(f->id & set))
mp_msg(MSGT_VO, msgl, " [%s]", f->name);
}
mp_msg(MSGT_VO, msgl, "\n");
}
// This guesses if the current GL context is a suspected software renderer.
static bool is_software_gl(GL *gl)
{
const char *renderer = gl->GetString(GL_RENDERER);
const char *vendor = gl->GetString(GL_VENDOR);
return !(renderer && vendor) ||
strcmp(renderer, "Software Rasterizer") == 0 ||
strstr(renderer, "llvmpipe") ||
strcmp(vendor, "Microsoft Corporation") == 0 ||
strcmp(renderer, "Mesa X11") == 0;
}
#ifdef HAVE_LIBDL
#include <dlfcn.h>
#endif
/**
* \brief find address of a linked function
* \param s name of function to find
* \return address of function or NULL if not found
*/
static void *getdladdr(const char *s)
{
void *ret = NULL;
#ifdef HAVE_LIBDL
void *handle = dlopen(NULL, RTLD_LAZY);
if (!handle)
return NULL;
ret = dlsym(handle, s);
dlclose(handle);
#endif
return ret;
}
#define FN_OFFS(name) offsetof(GL, name)
// Define the function with a "hard" reference to the function as fallback.
// (This requires linking with a compatible OpenGL library.)
#define DEF_FN_HARD(name) {FN_OFFS(name), {"gl" # name}, gl ## name}
#define DEF_FN(name) {FN_OFFS(name), {"gl" # name}}
#define DEF_FN_NAMES(name, ...) {FN_OFFS(name), {__VA_ARGS__}}
struct gl_function {
ptrdiff_t offset;
char *funcnames[7];
void *fallback;
};
struct gl_functions {
const char *extension; // introduced with this extension in any version
int provides; // bitfield of MPGL_CAP_* constants
int ver_core; // introduced as required function
int ver_removed; // removed as required function (no replacement)
bool partial_ok; // loading only some functions is ok
struct gl_function *functions;
};
#define MAX_FN_COUNT 50 // max functions per gl_functions section
struct gl_functions gl_functions[] = {
// GL functions which are always available anywhere at least since 1.1
{
.ver_core = MPGL_VER(1, 1),
.provides = MPGL_CAP_GL,
.functions = (struct gl_function[]) {
DEF_FN_HARD(Viewport),
DEF_FN_HARD(Clear),
DEF_FN_HARD(GenTextures),
DEF_FN_HARD(DeleteTextures),
DEF_FN_HARD(TexEnvi),
DEF_FN_HARD(ClearColor),
DEF_FN_HARD(Enable),
DEF_FN_HARD(Disable),
DEF_FN_HARD(DrawBuffer),
DEF_FN_HARD(DepthMask),
DEF_FN_HARD(BlendFunc),
DEF_FN_HARD(Flush),
DEF_FN_HARD(Finish),
DEF_FN_HARD(PixelStorei),
DEF_FN_HARD(TexImage1D),
DEF_FN_HARD(TexImage2D),
DEF_FN_HARD(TexSubImage2D),
DEF_FN_HARD(GetTexImage),
DEF_FN_HARD(TexParameteri),
DEF_FN_HARD(TexParameterf),
DEF_FN_HARD(TexParameterfv),
DEF_FN_HARD(GetIntegerv),
DEF_FN_HARD(GetBooleanv),
DEF_FN_HARD(ColorMask),
DEF_FN_HARD(ReadPixels),
DEF_FN_HARD(ReadBuffer),
DEF_FN_HARD(DrawArrays),
DEF_FN_HARD(GetString),
DEF_FN_HARD(GetError),
DEF_FN_HARD(GetTexLevelParameteriv),
{0}
},
},
// GL 2.0-3.x functions
{
.ver_core = MPGL_VER(2, 0),
.provides = MPGL_CAP_GL2,
.functions = (struct gl_function[]) {
DEF_FN(GenBuffers),
DEF_FN(DeleteBuffers),
DEF_FN(BindBuffer),
DEF_FN(MapBuffer),
DEF_FN(UnmapBuffer),
DEF_FN(BufferData),
DEF_FN(ActiveTexture),
DEF_FN(BindTexture),
DEF_FN(GetAttribLocation),
DEF_FN(EnableVertexAttribArray),
DEF_FN(DisableVertexAttribArray),
DEF_FN(VertexAttribPointer),
DEF_FN(UseProgram),
DEF_FN(GetUniformLocation),
DEF_FN(CompileShader),
DEF_FN(CreateProgram),
DEF_FN(CreateShader),
DEF_FN(ShaderSource),
DEF_FN(LinkProgram),
DEF_FN(AttachShader),
DEF_FN(DeleteShader),
DEF_FN(DeleteProgram),
DEF_FN(GetShaderInfoLog),
DEF_FN(GetShaderiv),
DEF_FN(GetProgramInfoLog),
DEF_FN(GetProgramiv),
DEF_FN(BindAttribLocation),
DEF_FN(Uniform1f),
DEF_FN(Uniform2f),
DEF_FN(Uniform3f),
DEF_FN(Uniform1i),
DEF_FN(UniformMatrix3fv),
DEF_FN(TexImage3D),
{0},
},
},
// GL 2.1-3.x functions (also: GLSL 120 shaders)
{
.ver_core = MPGL_VER(2, 1),
.provides = MPGL_CAP_GL21,
.functions = (struct gl_function[]) {
DEF_FN(UniformMatrix4x3fv),
{0}
},
},
// GL 3.x core only functions.
{
.ver_core = MPGL_VER(3, 0),
.provides = MPGL_CAP_GL3 | MPGL_CAP_SRGB_TEX | MPGL_CAP_SRGB_FB,
.functions = (struct gl_function[]) {
DEF_FN(GetStringi),
{0}
},
},
// Framebuffers, extension in GL 2.x, core in GL 3.x core.
{
.ver_core = MPGL_VER(3, 0),
.extension = "GL_ARB_framebuffer_object",
.provides = MPGL_CAP_FB,
.functions = (struct gl_function[]) {
DEF_FN(BindFramebuffer),
DEF_FN(GenFramebuffers),
DEF_FN(DeleteFramebuffers),
DEF_FN(CheckFramebufferStatus),
DEF_FN(FramebufferTexture2D),
{0}
},
},
// Framebuffers, alternative extension name.
{
.ver_removed = MPGL_VER(3, 0), // don't touch these fn names in 3.x
.extension = "GL_EXT_framebuffer_object",
.provides = MPGL_CAP_FB,
.functions = (struct gl_function[]) {
DEF_FN_NAMES(BindFramebuffer, "glBindFramebufferEXT"),
DEF_FN_NAMES(GenFramebuffers, "glGenFramebuffersEXT"),
DEF_FN_NAMES(DeleteFramebuffers, "glDeleteFramebuffersEXT"),
DEF_FN_NAMES(CheckFramebufferStatus, "glCheckFramebufferStatusEXT"),
DEF_FN_NAMES(FramebufferTexture2D, "glFramebufferTexture2DEXT"),
{0}
},
},
// VAOs, extension in GL 2.x, core in GL 3.x core.
{
.ver_core = MPGL_VER(3, 0),
.extension = "GL_ARB_vertex_array_object",
.provides = MPGL_CAP_VAO,
.functions = (struct gl_function[]) {
DEF_FN(GenVertexArrays),
DEF_FN(BindVertexArray),
DEF_FN(DeleteVertexArrays),
{0}
}
},
// sRGB textures, extension in GL 2.x, core in GL 3.x core.
{
.ver_core = MPGL_VER(3, 0),
.extension = "GL_EXT_texture_sRGB",
.provides = MPGL_CAP_SRGB_TEX,
.functions = (struct gl_function[]) {{0}},
},
// sRGB framebuffers, extension in GL 2.x, core in GL 3.x core.
{
.ver_core = MPGL_VER(3, 0),
.extension = "GL_EXT_framebuffer_sRGB",
.provides = MPGL_CAP_SRGB_FB,
.functions = (struct gl_function[]) {{0}},
},
// Float textures, extension in GL 2.x, core in GL 3.x core.
{
.ver_core = MPGL_VER(3, 0),
.extension = "GL_ARB_texture_float",
.provides = MPGL_CAP_FLOAT_TEX,
.functions = (struct gl_function[]) {{0}},
},
// GL_RED / GL_RG textures, extension in GL 2.x, core in GL 3.x core.
{
.ver_core = MPGL_VER(3, 0),
.extension = "GL_ARB_texture_rg",
.provides = MPGL_CAP_TEX_RG,
.functions = (struct gl_function[]) {{0}},
},
// Swap control, always an OS specific extension
{
.extension = "_swap_control",
.functions = (struct gl_function[]) {
DEF_FN_NAMES(SwapInterval, "glXSwapIntervalSGI", "glXSwapInterval",
"wglSwapIntervalSGI", "wglSwapInterval",
"wglSwapIntervalEXT"),
{0}
},
},
// GL legacy functions in GL 1.x - 2.x, removed from GL 3.x
{
.ver_core = MPGL_VER(1, 1),
.ver_removed = MPGL_VER(3, 0),
.provides = MPGL_CAP_GL_LEGACY,
.functions = (struct gl_function[]) {
DEF_FN_HARD(Begin),
DEF_FN_HARD(End),
DEF_FN_HARD(MatrixMode),
DEF_FN_HARD(LoadIdentity),
DEF_FN_HARD(Translated),
DEF_FN_HARD(Scaled),
DEF_FN_HARD(Ortho),
DEF_FN_HARD(PushMatrix),
DEF_FN_HARD(PopMatrix),
DEF_FN_HARD(GenLists),
DEF_FN_HARD(DeleteLists),
DEF_FN_HARD(NewList),
DEF_FN_HARD(EndList),
DEF_FN_HARD(CallList),
DEF_FN_HARD(CallLists),
DEF_FN_HARD(Color4ub),
DEF_FN_HARD(Color4f),
DEF_FN_HARD(TexCoord2f),
DEF_FN_HARD(TexCoord2fv),
DEF_FN_HARD(Vertex2f),
DEF_FN_HARD(VertexPointer),
DEF_FN_HARD(ColorPointer),
DEF_FN_HARD(TexCoordPointer),
DEF_FN_HARD(EnableClientState),
DEF_FN_HARD(DisableClientState),
{0}
},
},
// Loading of old extensions, which are later added to GL 2.0.
// NOTE: actually we should be checking the extension strings: the OpenGL
// library could provide an entry point, but not implement it.
// But the previous code didn't do that, and nobody ever complained.
{
.ver_removed = MPGL_VER(2, 1),
.partial_ok = true,
.functions = (struct gl_function[]) {
DEF_FN_NAMES(GenBuffers, "glGenBuffers", "glGenBuffersARB"),
DEF_FN_NAMES(DeleteBuffers, "glDeleteBuffers", "glDeleteBuffersARB"),
DEF_FN_NAMES(BindBuffer, "glBindBuffer", "glBindBufferARB"),
DEF_FN_NAMES(MapBuffer, "glMapBuffer", "glMapBufferARB"),
DEF_FN_NAMES(UnmapBuffer, "glUnmapBuffer", "glUnmapBufferARB"),
DEF_FN_NAMES(BufferData, "glBufferData", "glBufferDataARB"),
DEF_FN_NAMES(ActiveTexture, "glActiveTexture", "glActiveTextureARB"),
DEF_FN_NAMES(BindTexture, "glBindTexture", "glBindTextureARB", "glBindTextureEXT"),
DEF_FN_NAMES(MultiTexCoord2f, "glMultiTexCoord2f", "glMultiTexCoord2fARB"),
DEF_FN_NAMES(TexImage3D, "glTexImage3D"),
{0}
},
},
// Ancient ARB shaders.
{
.extension = "_program",
.ver_removed = MPGL_VER(3, 0),
.functions = (struct gl_function[]) {
DEF_FN_NAMES(GenPrograms, "glGenProgramsARB"),
DEF_FN_NAMES(DeletePrograms, "glDeleteProgramsARB"),
DEF_FN_NAMES(BindProgram, "glBindProgramARB"),
DEF_FN_NAMES(ProgramString, "glProgramStringARB"),
DEF_FN_NAMES(GetProgramivARB, "glGetProgramivARB"),
DEF_FN_NAMES(ProgramEnvParameter4f, "glProgramEnvParameter4fARB"),
{0}
},
},
// Ancient ATI extensions.
{
.extension = "ATI_fragment_shader",
.ver_removed = MPGL_VER(3, 0),
.functions = (struct gl_function[]) {
DEF_FN_NAMES(BeginFragmentShader, "glBeginFragmentShaderATI"),
DEF_FN_NAMES(EndFragmentShader, "glEndFragmentShaderATI"),
DEF_FN_NAMES(SampleMap, "glSampleMapATI"),
DEF_FN_NAMES(ColorFragmentOp2, "glColorFragmentOp2ATI"),
DEF_FN_NAMES(ColorFragmentOp3, "glColorFragmentOp3ATI"),
DEF_FN_NAMES(SetFragmentShaderConstant, "glSetFragmentShaderConstantATI"),
{0}
},
},
};
#undef FN_OFFS
#undef DEF_FN_HARD
#undef DEF_FN
#undef DEF_FN_NAMES
// Fill the GL struct with function pointers and extensions from the current
// GL context.
// getProcAddress: function to resolve function names, may be NULL
// ext2: an extra extension string
// Note: if you create a CONTEXT_FORWARD_COMPATIBLE_BIT_ARB with OpenGL 3.0,
// you must append "GL_ARB_compatibility" to ext2.
static void getFunctions(GL *gl, void *(*getProcAddress)(const GLubyte *),
const char *ext2)
{
talloc_free_children(gl);
*gl = (GL) {
.extensions = talloc_strdup(gl, ext2 ? ext2 : ""),
};
if (!getProcAddress)
getProcAddress = (void *)getdladdr;
gl->GetString = getProcAddress("glGetString");
if (!gl->GetString)
gl->GetString = glGetString;
GLint major = 0, minor = 0;
const char *version = gl->GetString(GL_VERSION);
sscanf(version, "%d.%d", &major, &minor);
gl->version = MPGL_VER(major, minor);
mp_msg(MSGT_VO, MSGL_V, "[gl] Detected OpenGL %d.%d.\n", major, minor);
// Note: This code doesn't handle CONTEXT_FORWARD_COMPATIBLE_BIT_ARB
// on OpenGL 3.0 correctly. Apparently there's no way to detect this
// situation, because GL_ARB_compatibility is specified only for 3.1
// and above.
bool has_legacy = false;
if (gl->version >= MPGL_VER(3, 0)) {
gl->GetStringi = getProcAddress("glGetStringi");
gl->GetIntegerv = getProcAddress("glGetIntegerv");
if (!(gl->GetStringi && gl->GetIntegerv))
return;
GLint exts;
gl->GetIntegerv(GL_NUM_EXTENSIONS, &exts);
for (int n = 0; n < exts; n++) {
const char *ext = gl->GetStringi(GL_EXTENSIONS, n);
gl->extensions = talloc_asprintf_append(gl->extensions, " %s", ext);
if (strcmp(ext, "GL_ARB_compatibility") == 0)
has_legacy = true;
}
// This version doesn't have GL_ARB_compatibility yet, and always
// includes legacy (except with CONTEXT_FORWARD_COMPATIBLE_BIT_ARB).
if (gl->version == MPGL_VER(3, 0))
has_legacy = true;
} else {
const char *ext = (char*)gl->GetString(GL_EXTENSIONS);
gl->extensions = talloc_asprintf_append(gl->extensions, " %s", ext);
has_legacy = true;
}
if (has_legacy)
mp_msg(MSGT_VO, MSGL_V, "[gl] OpenGL legacy compat. found.\n");
mp_msg(MSGT_VO, MSGL_DBG2, "[gl] Combined OpenGL extensions string:\n%s\n",
gl->extensions);
for (int n = 0; n < sizeof(gl_functions) / sizeof(gl_functions[0]); n++) {
struct gl_functions *section = &gl_functions[n];
// With has_legacy, the legacy functions are still available, and
// functions are never actually removed. (E.g. the context could be at
// version >= 3.0, but functions like glBegin still exist and work.)
if (!has_legacy && section->ver_removed &&
gl->version >= section->ver_removed)
continue;
// NOTE: Function entrypoints can exist, even if they do not work.
// We must always check extension strings and versions.
bool exists = false;
if (section->ver_core)
exists = gl->version >= section->ver_core;
if (section->extension && strstr(gl->extensions, section->extension))
exists = true;
if (section->partial_ok)
exists = true; // possibly
if (!exists)
continue;
void *loaded[MAX_FN_COUNT] = {0};
bool all_loaded = true;
for (int i = 0; section->functions[i].funcnames[0]; i++) {
struct gl_function *fn = &section->functions[i];
void *ptr = NULL;
for (int x = 0; fn->funcnames[x]; x++) {
ptr = getProcAddress((const GLubyte *)fn->funcnames[x]);
if (ptr)
break;
}
if (!ptr)
ptr = fn->fallback;
if (!ptr) {
all_loaded = false;
if (!section->partial_ok) {
mp_msg(MSGT_VO, MSGL_V, "[gl] Required function '%s' not "
"found for %s/%d.%d.\n", fn->funcnames[0],
section->extension ? section->extension : "native",
MPGL_VER_GET_MAJOR(section->ver_core),
MPGL_VER_GET_MINOR(section->ver_core));
break;
}
}
assert(i < MAX_FN_COUNT);
loaded[i] = ptr;
}
if (all_loaded || section->partial_ok) {
gl->mpgl_caps |= section->provides;
for (int i = 0; section->functions[i].funcnames[0]; i++) {
struct gl_function *fn = &section->functions[i];
void **funcptr = (void**)(((char*)gl) + fn->offset);
if (loaded[i])
*funcptr = loaded[i];
}
}
}
gl->glsl_version = 0;
if (gl->version >= MPGL_VER(2, 0))
gl->glsl_version = 110;
if (gl->version >= MPGL_VER(2, 1))
gl->glsl_version = 120;
if (gl->version >= MPGL_VER(3, 0))
gl->glsl_version = 130;
// Specifically needed for OSX (normally we request 3.0 contexts only, but
// OSX always creates 3.2 contexts when requesting a core context).
if (gl->version >= MPGL_VER(3, 2))
gl->glsl_version = 150;
if (!is_software_gl(gl))
gl->mpgl_caps |= MPGL_CAP_NO_SW;
mp_msg(MSGT_VO, MSGL_V, "[gl] Detected OpenGL features:");
list_features(gl->mpgl_caps, MSGL_V, false);
}
/**
* \brief return the number of bytes per pixel for the given format
* \param format OpenGL format
* \param type OpenGL type
* \return bytes per pixel
* \ingroup glgeneral
*
* Does not handle all possible variants, just those used by MPlayer
*/
int glFmt2bpp(GLenum format, GLenum type)
{
int component_size = 0;
switch (type) {
case GL_UNSIGNED_BYTE_3_3_2:
case GL_UNSIGNED_BYTE_2_3_3_REV:
return 1;
case GL_UNSIGNED_SHORT_5_5_5_1:
case GL_UNSIGNED_SHORT_1_5_5_5_REV:
case GL_UNSIGNED_SHORT_5_6_5:
case GL_UNSIGNED_SHORT_5_6_5_REV:
return 2;
case GL_UNSIGNED_BYTE:
component_size = 1;
break;
case GL_UNSIGNED_SHORT:
component_size = 2;
break;
}
switch (format) {
case GL_LUMINANCE:
case GL_ALPHA:
return component_size;
case GL_YCBCR_MESA:
return 2;
case GL_RGB:
case GL_BGR:
return 3 * component_size;
case GL_RGBA:
case GL_BGRA:
return 4 * component_size;
case GL_RED:
return component_size;
case GL_RG:
case GL_LUMINANCE_ALPHA:
return 2 * component_size;
}
abort(); // unknown
}
/**
* \brief upload a texture, handling things like stride and slices
* \param target texture target, usually GL_TEXTURE_2D
* \param format OpenGL format of data
* \param type OpenGL type of data
* \param dataptr data to upload
* \param stride data stride
* \param x x offset in texture
* \param y y offset in texture
* \param w width of the texture part to upload
* \param h height of the texture part to upload
* \param slice height of an upload slice, 0 for all at once
* \ingroup gltexture
*/
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)
{
const uint8_t *data = dataptr;
int y_max = y + h;
if (w <= 0 || h <= 0)
return;
if (slice <= 0)
slice = h;
if (stride < 0) {
data += (h - 1) * stride;
stride = -stride;
}
// this is not always correct, but should work for MPlayer
glAdjustAlignment(gl, stride);
gl->PixelStorei(GL_UNPACK_ROW_LENGTH, stride / glFmt2bpp(format, type));
for (; y + slice <= y_max; y += slice) {
gl->TexSubImage2D(target, 0, x, y, w, slice, format, type, data);
data += stride * slice;
}
if (y < y_max)
gl->TexSubImage2D(target, 0, x, y, w, y_max - y, format, type, data);
}
// Like glUploadTex, but upload a byte array with all elements set to val.
// If scratch is not NULL, points to a resizeable talloc memory block than can
// be freely used by the function (for avoiding temporary memory allocations).
void glClearTex(GL *gl, GLenum target, GLenum format, GLenum type,
int x, int y, int w, int h, uint8_t val, void **scratch)
{
int bpp = glFmt2bpp(format, type);
int stride = w * bpp;
int size = h * stride;
if (size < 1)
return;
void *data = scratch ? *scratch : NULL;
if (talloc_get_size(data) < size)
data = talloc_realloc(NULL, data, char *, size);
memset(data, val, size);
glAdjustAlignment(gl, stride);
gl->PixelStorei(GL_UNPACK_ROW_LENGTH, w);
gl->TexSubImage2D(target, 0, x, y, w, h, format, type, data);
if (scratch) {
*scratch = data;
} else {
talloc_free(data);
}
}
/**
* \brief download a texture, handling things like stride and slices
* \param target texture target, usually GL_TEXTURE_2D
* \param format OpenGL format of data
* \param type OpenGL type of data
* \param dataptr destination memory for download
* \param stride data stride (must be positive)
* \ingroup gltexture
*/
void glDownloadTex(GL *gl, GLenum target, GLenum format, GLenum type,
void *dataptr, int stride)
{
// this is not always correct, but should work for MPlayer
glAdjustAlignment(gl, stride);
gl->PixelStorei(GL_PACK_ROW_LENGTH, stride / glFmt2bpp(format, type));
gl->GetTexImage(target, 0, format, type, dataptr);
}
void glEnable3DLeft(GL *gl, int type)
{
GLint buffer;
switch (type) {
case GL_3D_RED_CYAN:
gl->ColorMask(GL_TRUE, GL_FALSE, GL_FALSE, GL_FALSE);
break;
case GL_3D_GREEN_MAGENTA:
gl->ColorMask(GL_FALSE, GL_TRUE, GL_FALSE, GL_FALSE);
break;
case GL_3D_QUADBUFFER:
gl->GetIntegerv(GL_DRAW_BUFFER, &buffer);
switch (buffer) {
case GL_FRONT:
case GL_FRONT_LEFT:
case GL_FRONT_RIGHT:
buffer = GL_FRONT_LEFT;
break;
case GL_BACK:
case GL_BACK_LEFT:
case GL_BACK_RIGHT:
buffer = GL_BACK_LEFT;
break;
}
gl->DrawBuffer(buffer);
break;
}
}
void glEnable3DRight(GL *gl, int type)
{
GLint buffer;
switch (type) {
case GL_3D_RED_CYAN:
gl->ColorMask(GL_FALSE, GL_TRUE, GL_TRUE, GL_FALSE);
break;
case GL_3D_GREEN_MAGENTA:
gl->ColorMask(GL_TRUE, GL_FALSE, GL_TRUE, GL_FALSE);
break;
case GL_3D_QUADBUFFER:
gl->GetIntegerv(GL_DRAW_BUFFER, &buffer);
switch (buffer) {
case GL_FRONT:
case GL_FRONT_LEFT:
case GL_FRONT_RIGHT:
buffer = GL_FRONT_RIGHT;
break;
case GL_BACK:
case GL_BACK_LEFT:
case GL_BACK_RIGHT:
buffer = GL_BACK_RIGHT;
break;
}
gl->DrawBuffer(buffer);
break;
}
}
void glDisable3D(GL *gl, int type)
{
GLint buffer;
switch (type) {
case GL_3D_RED_CYAN:
case GL_3D_GREEN_MAGENTA:
gl->ColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
break;
case GL_3D_QUADBUFFER:
gl->DrawBuffer(GL_BACK);
gl->GetIntegerv(GL_DRAW_BUFFER, &buffer);
switch (buffer) {
case GL_FRONT:
case GL_FRONT_LEFT:
case GL_FRONT_RIGHT:
buffer = GL_FRONT;
break;
case GL_BACK:
case GL_BACK_LEFT:
case GL_BACK_RIGHT:
buffer = GL_BACK;
break;
}
gl->DrawBuffer(buffer);
break;
}
}
mp_image_t *glGetWindowScreenshot(GL *gl)
{
GLint vp[4]; //x, y, w, h
gl->GetIntegerv(GL_VIEWPORT, vp);
mp_image_t *image = mp_image_alloc(IMGFMT_RGB24, vp[2], vp[3]);
gl->BindBuffer(GL_PIXEL_UNPACK_BUFFER, 0);
gl->PixelStorei(GL_PACK_ALIGNMENT, 0);
gl->PixelStorei(GL_PACK_ROW_LENGTH, 0);
gl->ReadBuffer(GL_FRONT);
//flip image while reading
for (int y = 0; y < vp[3]; y++) {
gl->ReadPixels(vp[0], vp[1] + vp[3] - y - 1, vp[2], 1,
GL_RGB, GL_UNSIGNED_BYTE,
image->planes[0] + y * image->stride[0]);
}
return image;
}
#ifdef CONFIG_GL_COCOA
#include "cocoa_common.h"
static bool config_window_cocoa(struct MPGLContext *ctx, uint32_t d_width,
uint32_t d_height, uint32_t flags)
{
int rv = vo_cocoa_config_window(ctx->vo, d_width, d_height, flags,
ctx->requested_gl_version >= MPGL_VER(3, 0));
if (rv != 0)
return false;
getFunctions(ctx->gl, (void *)vo_cocoa_glgetaddr, NULL);
ctx->depth_r = vo_cocoa_cgl_color_size(ctx->vo);
ctx->depth_g = vo_cocoa_cgl_color_size(ctx->vo);
ctx->depth_b = vo_cocoa_cgl_color_size(ctx->vo);
if (!ctx->gl->SwapInterval)
ctx->gl->SwapInterval = vo_cocoa_swap_interval;
return true;
}
static void releaseGlContext_cocoa(MPGLContext *ctx)
{
}
static void swapGlBuffers_cocoa(MPGLContext *ctx)
{
vo_cocoa_swap_buffers(ctx->vo);
}
#endif
#ifdef CONFIG_GL_WIN32
#include <windows.h>
#include "w32_common.h"
struct w32_context {
HGLRC context;
};
static void *w32gpa(const GLubyte *procName)
{
HMODULE oglmod;
void *res = wglGetProcAddress(procName);
if (res)
return res;
oglmod = GetModuleHandle("opengl32.dll");
return GetProcAddress(oglmod, procName);
}
static bool create_context_w32_old(struct MPGLContext *ctx)
{
GL *gl = ctx->gl;
struct w32_context *w32_ctx = ctx->priv;
HGLRC *context = &w32_ctx->context;
if (*context) {
gl->Finish(); // supposedly to prevent flickering
return true;
}
HWND win = ctx->vo->w32->window;
HDC windc = GetDC(win);
bool res = false;
HGLRC new_context = wglCreateContext(windc);
if (!new_context) {
mp_msg(MSGT_VO, MSGL_FATAL, "[gl] Could not create GL context!\n");
goto out;
}
if (!wglMakeCurrent(windc, new_context)) {
mp_msg(MSGT_VO, MSGL_FATAL, "[gl] Could not set GL context!\n");
wglDeleteContext(new_context);
goto out;
}
*context = new_context;
getFunctions(ctx->gl, w32gpa, NULL);
res = true;
out:
ReleaseDC(win, windc);
return res;
}
static bool create_context_w32_gl3(struct MPGLContext *ctx)
{
struct w32_context *w32_ctx = ctx->priv;
HGLRC *context = &w32_ctx->context;
if (*context) // reuse existing context
return true; // not reusing it breaks gl3!
HWND win = ctx->vo->w32->window;
HDC windc = GetDC(win);
HGLRC new_context = 0;
new_context = wglCreateContext(windc);
if (!new_context) {
mp_msg(MSGT_VO, MSGL_FATAL, "[gl] Could not create GL context!\n");
return false;
}
// set context
if (!wglMakeCurrent(windc, new_context)) {
mp_msg(MSGT_VO, MSGL_FATAL, "[gl] Could not set GL context!\n");
goto out;
}
const char *(GLAPIENTRY *wglGetExtensionsStringARB)(HDC hdc)
= w32gpa((const GLubyte*)"wglGetExtensionsStringARB");
if (!wglGetExtensionsStringARB)
goto unsupported;
const char *wgl_exts = wglGetExtensionsStringARB(windc);
if (!strstr(wgl_exts, "WGL_ARB_create_context"))
goto unsupported;
HGLRC (GLAPIENTRY *wglCreateContextAttribsARB)(HDC hDC, HGLRC hShareContext,
const int *attribList)
= w32gpa((const GLubyte*)"wglCreateContextAttribsARB");
if (!wglCreateContextAttribsARB)
goto unsupported;
int gl_version = ctx->requested_gl_version;
int attribs[] = {
WGL_CONTEXT_MAJOR_VERSION_ARB, MPGL_VER_GET_MAJOR(gl_version),
WGL_CONTEXT_MINOR_VERSION_ARB, MPGL_VER_GET_MINOR(gl_version),
WGL_CONTEXT_FLAGS_ARB, 0,
WGL_CONTEXT_PROFILE_MASK_ARB, WGL_CONTEXT_CORE_PROFILE_BIT_ARB,
0
};
*context = wglCreateContextAttribsARB(windc, 0, attribs);
if (! *context) {
// NVidia, instead of ignoring WGL_CONTEXT_FLAGS_ARB, will error out if
// it's present on pre-3.2 contexts.
// Remove it from attribs and retry the context creation.
attribs[6] = attribs[7] = 0;
*context = wglCreateContextAttribsARB(windc, 0, attribs);
}
if (! *context) {
int err = GetLastError();
mp_msg(MSGT_VO, MSGL_FATAL, "[gl] Could not create an OpenGL 3.x"
" context: error 0x%x\n", err);
goto out;
}
wglMakeCurrent(NULL, NULL);
wglDeleteContext(new_context);
if (!wglMakeCurrent(windc, *context)) {
mp_msg(MSGT_VO, MSGL_FATAL, "[gl] Could not set GL3 context!\n");
wglDeleteContext(*context);
return false;
}
/* update function pointers */
getFunctions(ctx->gl, w32gpa, NULL);
int pfmt = GetPixelFormat(windc);
PIXELFORMATDESCRIPTOR pfd;
if (DescribePixelFormat(windc, pfmt, sizeof(PIXELFORMATDESCRIPTOR), &pfd)) {
ctx->depth_r = pfd.cRedBits;
ctx->depth_g = pfd.cGreenBits;
ctx->depth_b = pfd.cBlueBits;
}
return true;
unsupported:
mp_msg(MSGT_VO, MSGL_ERR, "[gl] The current OpenGL implementation does"
" not support OpenGL 3.x \n");
out:
wglDeleteContext(new_context);
return false;
}
static bool config_window_w32(struct MPGLContext *ctx, uint32_t d_width,
uint32_t d_height, uint32_t flags)
{
if (!vo_w32_config(ctx->vo, d_width, d_height, flags))
return false;
bool success = false;
if (ctx->requested_gl_version >= MPGL_VER(3, 0))
success = create_context_w32_gl3(ctx);
if (!success)
success = create_context_w32_old(ctx);
return success;
}
static void releaseGlContext_w32(MPGLContext *ctx)
{
struct w32_context *w32_ctx = ctx->priv;
HGLRC *context = &w32_ctx->context;
if (*context) {
wglMakeCurrent(0, 0);
wglDeleteContext(*context);
}
*context = 0;
}
static void swapGlBuffers_w32(MPGLContext *ctx)
{
HDC vo_hdc = GetDC(ctx->vo->w32->window);
SwapBuffers(vo_hdc);
ReleaseDC(ctx->vo->w32->window, vo_hdc);
}
#endif
#ifdef CONFIG_GL_X11
#include <X11/Xlib.h>
#include <GL/glx.h>
#include "x11_common.h"
#define MP_GET_GLX_WORKAROUNDS
#include "gl_header_fixes.h"
struct glx_context {
XVisualInfo *vinfo;
GLXContext context;
GLXFBConfig fbc;
};
static bool create_context_x11_old(struct MPGLContext *ctx)
{
struct glx_context *glx_ctx = ctx->priv;
Display *display = ctx->vo->x11->display;
struct vo *vo = ctx->vo;
GL *gl = ctx->gl;
if (glx_ctx->context)
return true;
GLXContext new_context = glXCreateContext(display, glx_ctx->vinfo, NULL,
True);
if (!new_context) {
mp_msg(MSGT_VO, MSGL_FATAL, "[gl] Could not create GLX context!\n");
return false;
}
if (!glXMakeCurrent(display, ctx->vo->x11->window, new_context)) {
mp_msg(MSGT_VO, MSGL_FATAL, "[gl] Could not set GLX context!\n");
glXDestroyContext(display, new_context);
return false;
}
void *(*getProcAddress)(const GLubyte *);
getProcAddress = getdladdr("glXGetProcAddress");
if (!getProcAddress)
getProcAddress = getdladdr("glXGetProcAddressARB");
const char *glxstr = "";
const char *(*glXExtStr)(Display *, int)
= getdladdr("glXQueryExtensionsString");
if (glXExtStr)
glxstr = glXExtStr(display, ctx->vo->x11->screen);
getFunctions(gl, getProcAddress, glxstr);
if (!gl->GenPrograms && gl->GetString &&
gl->version < MPGL_VER(3, 0) &&
getProcAddress &&
strstr(gl->GetString(GL_EXTENSIONS), "GL_ARB_vertex_program"))
{
mp_msg(MSGT_VO, MSGL_WARN,
"Broken glXGetProcAddress detected, trying workaround\n");
getFunctions(gl, NULL, glxstr);
}
glx_ctx->context = new_context;
if (!glXIsDirect(vo->x11->display, new_context))
ctx->gl->mpgl_caps &= ~MPGL_CAP_NO_SW;
return true;
}
typedef GLXContext (*glXCreateContextAttribsARBProc)
(Display*, GLXFBConfig, GLXContext, Bool, const int*);
static bool create_context_x11_gl3(struct MPGLContext *ctx, bool debug)
{
struct glx_context *glx_ctx = ctx->priv;
struct vo *vo = ctx->vo;
if (glx_ctx->context)
return true;
glXCreateContextAttribsARBProc glXCreateContextAttribsARB =
(glXCreateContextAttribsARBProc)
glXGetProcAddressARB((const GLubyte *)"glXCreateContextAttribsARB");
const char *glxstr = "";
const char *(*glXExtStr)(Display *, int)
= getdladdr("glXQueryExtensionsString");
if (glXExtStr)
glxstr = glXExtStr(vo->x11->display, vo->x11->screen);
bool have_ctx_ext = glxstr && !!strstr(glxstr, "GLX_ARB_create_context");
if (!(have_ctx_ext && glXCreateContextAttribsARB)) {
return false;
}
int gl_version = ctx->requested_gl_version;
int context_attribs[] = {
GLX_CONTEXT_MAJOR_VERSION_ARB, MPGL_VER_GET_MAJOR(gl_version),
GLX_CONTEXT_MINOR_VERSION_ARB, MPGL_VER_GET_MINOR(gl_version),
GLX_CONTEXT_PROFILE_MASK_ARB, GLX_CONTEXT_CORE_PROFILE_BIT_ARB,
GLX_CONTEXT_FLAGS_ARB, debug ? GLX_CONTEXT_DEBUG_BIT_ARB : 0,
None
};
GLXContext context = glXCreateContextAttribsARB(vo->x11->display,
glx_ctx->fbc, 0, True,
context_attribs);
if (!context) {
mp_msg(MSGT_VO, MSGL_FATAL, "[gl] Could not create GLX context!\n");
return false;
}
// set context
if (!glXMakeCurrent(vo->x11->display, vo->x11->window, context)) {
mp_msg(MSGT_VO, MSGL_FATAL, "[gl] Could not set GLX context!\n");
glXDestroyContext(vo->x11->display, context);
return false;
}
glx_ctx->context = context;
getFunctions(ctx->gl, (void *)glXGetProcAddress, glxstr);
if (!glXIsDirect(vo->x11->display, context))
ctx->gl->mpgl_caps &= ~MPGL_CAP_NO_SW;
return true;
}
// The GL3/FBC initialization code roughly follows/copies from:
// http://www.opengl.org/wiki/Tutorial:_OpenGL_3.0_Context_Creation_(GLX)
// but also uses some of the old code.
static GLXFBConfig select_fb_config(struct vo *vo, const int *attribs)
{
int fbcount;
GLXFBConfig *fbc = glXChooseFBConfig(vo->x11->display, vo->x11->screen,
attribs, &fbcount);
if (!fbc)
return NULL;
// The list in fbc is sorted (so that the first element is the best).
GLXFBConfig fbconfig = fbc[0];
XFree(fbc);
return fbconfig;
}
static bool config_window_x11(struct MPGLContext *ctx, uint32_t d_width,
uint32_t d_height, uint32_t flags)
{
struct vo *vo = ctx->vo;
struct glx_context *glx_ctx = ctx->priv;
if (glx_ctx->context) {
// GL context and window already exist.
// Only update window geometry etc.
vo_x11_config_vo_window(vo, glx_ctx->vinfo, vo->dx, vo->dy, d_width,
d_height, flags, "gl");
return true;
}
int glx_major, glx_minor;
// FBConfigs were added in GLX version 1.3.
if (!glXQueryVersion(vo->x11->display, &glx_major, &glx_minor) ||
(MPGL_VER(glx_major, glx_minor) < MPGL_VER(1, 3)))
{
mp_msg(MSGT_VO, MSGL_ERR, "[gl] GLX version older than 1.3.\n");
return false;
}
const int glx_attribs_stereo_value_idx = 1; // index of GLX_STEREO + 1
int glx_attribs[] = {
GLX_STEREO, False,
GLX_X_RENDERABLE, True,
GLX_RED_SIZE, 1,
GLX_GREEN_SIZE, 1,
GLX_BLUE_SIZE, 1,
GLX_DOUBLEBUFFER, True,
None
};
GLXFBConfig fbc = NULL;
if (flags & VOFLAG_STEREO) {
glx_attribs[glx_attribs_stereo_value_idx] = True;
fbc = select_fb_config(vo, glx_attribs);
if (!fbc) {
mp_msg(MSGT_VO, MSGL_ERR, "[gl] Could not find a stereo visual,"
" 3D will probably not work!\n");
glx_attribs[glx_attribs_stereo_value_idx] = False;
}
}
if (!fbc)
fbc = select_fb_config(vo, glx_attribs);
if (!fbc) {
mp_msg(MSGT_VO, MSGL_ERR, "[gl] no GLX support present\n");
return false;
}
glx_ctx->fbc = fbc;
glx_ctx->vinfo = glXGetVisualFromFBConfig(vo->x11->display, fbc);
mp_msg(MSGT_VO, MSGL_V, "[gl] GLX chose visual with ID 0x%x\n",
(int)glx_ctx->vinfo->visualid);
glXGetFBConfigAttrib(vo->x11->display, fbc, GLX_RED_SIZE, &ctx->depth_r);
glXGetFBConfigAttrib(vo->x11->display, fbc, GLX_GREEN_SIZE, &ctx->depth_g);
glXGetFBConfigAttrib(vo->x11->display, fbc, GLX_BLUE_SIZE, &ctx->depth_b);
vo_x11_config_vo_window(vo, glx_ctx->vinfo, vo->dx, vo->dy, d_width,
d_height, flags, "gl");
bool success = false;
if (ctx->requested_gl_version >= MPGL_VER(3, 0))
success = create_context_x11_gl3(ctx, flags & VOFLAG_GL_DEBUG);
if (!success)
success = create_context_x11_old(ctx);
return success;
}
/**
* \brief free the VisualInfo and GLXContext of an OpenGL context.
* \ingroup glcontext
*/
static void releaseGlContext_x11(MPGLContext *ctx)
{
struct glx_context *glx_ctx = ctx->priv;
XVisualInfo **vinfo = &glx_ctx->vinfo;
GLXContext *context = &glx_ctx->context;
Display *display = ctx->vo->x11->display;
GL *gl = ctx->gl;
if (*vinfo)
XFree(*vinfo);
*vinfo = NULL;
if (*context) {
if (gl->Finish)
gl->Finish();
glXMakeCurrent(display, None, NULL);
glXDestroyContext(display, *context);
}
*context = 0;
}
static void swapGlBuffers_x11(MPGLContext *ctx)
{
glXSwapBuffers(ctx->vo->x11->display, ctx->vo->x11->window);
}
#endif
#ifdef CONFIG_GL_WAYLAND
#include "wayland_common.h"
#include <wayland-egl.h>
#include <EGL/egl.h>
#include <EGL/eglext.h>
#include <assert.h>
struct egl_context {
EGLSurface egl_surface;
struct wl_egl_window *egl_window;
struct {
EGLDisplay dpy;
EGLContext ctx;
EGLConfig conf;
} egl;
};
static void egl_resize_func(struct vo_wayland_state *wl,
struct egl_context *ctx)
{
int32_t x, y, scaled_height;
double ratio;
int minimum_size = 50;
if (wl->window->pending_width < minimum_size)
wl->window->pending_width = minimum_size;
if (wl->window->pending_height < minimum_size)
wl->window->pending_height = minimum_size;
ratio = (double) wl->vo->aspdat.orgw / wl->vo->aspdat.orgh;
scaled_height = wl->window->pending_height * ratio;
if (wl->window->pending_width > scaled_height) {
wl->window->pending_height = wl->window->pending_width / ratio;
} else {
wl->window->pending_width = scaled_height;
}
if (wl->window->edges & WL_SHELL_SURFACE_RESIZE_LEFT)
x = wl->window->width - wl->window->pending_width;
else
x = 0;
if (wl->window->edges & WL_SHELL_SURFACE_RESIZE_TOP)
y = wl->window->height - wl->window->pending_height;
else
y = 0;
wl_egl_window_resize(ctx->egl_window,
wl->window->pending_width,
wl->window->pending_height,
x, y);
wl->window->width = wl->window->pending_width;
wl->window->height = wl->window->pending_height;
/* set size for mplayer */
wl->vo->dwidth = wl->window->pending_width;
wl->vo->dheight = wl->window->pending_height;
wl->window->events |= VO_EVENT_RESIZE;
wl->window->edges = 0;
wl->window->resize_needed = 0;
}
static bool egl_create_context(struct vo_wayland_state *wl,
struct egl_context *egl_ctx,
MPGLContext *ctx)
{
EGLint major, minor, n;
EGLBoolean ret;
GL *gl = ctx->gl;
void *(*getProcAddress)(const GLubyte *);
const char *(*eglExtStr)(EGLDisplay *, int);
const char *eglstr = "";
egl_ctx->egl.dpy = eglGetDisplay(wl->display->display);
if (!egl_ctx->egl.dpy)
return false;
EGLint config_attribs[] = {
EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
EGL_RED_SIZE, 1,
EGL_GREEN_SIZE, 1,
EGL_BLUE_SIZE, 1,
EGL_ALPHA_SIZE, 0,
EGL_DEPTH_SIZE, 1,
EGL_RENDERABLE_TYPE, EGL_OPENGL_BIT,
EGL_NONE
};
/* major and minor here returns the supported EGL version (e.g.: 1.4) */
ret = eglInitialize(egl_ctx->egl.dpy, &major, &minor);
if (ret != EGL_TRUE)
return false;
EGLint context_attribs[] = {
EGL_CONTEXT_MAJOR_VERSION_KHR,
MPGL_VER_GET_MAJOR(ctx->requested_gl_version),
/* EGL_CONTEXT_MINOR_VERSION_KHR, */
/* MPGL_VER_GET_MINOR(ctx->requested_gl_version), */
/* EGL_CONTEXT_OPENGL_FORWARD_COMPATIBLE_BIT_KHR, 0, */
/* Segfaults on anything else than the major version */
EGL_NONE
};
ret = eglBindAPI(EGL_OPENGL_API);
assert(ret == EGL_TRUE);
ret = eglChooseConfig(egl_ctx->egl.dpy, config_attribs,
&egl_ctx->egl.conf, 1, &n);
assert(ret && n == 1);
egl_ctx->egl.ctx = eglCreateContext(egl_ctx->egl.dpy,
egl_ctx->egl.conf,
EGL_NO_CONTEXT,
context_attribs);
if (!egl_ctx->egl.ctx)
return false;
ret = eglMakeCurrent(egl_ctx->egl.dpy,
NULL,
NULL,
egl_ctx->egl.ctx);
assert(ret == EGL_TRUE);
getProcAddress = getdladdr("eglGetProcAddress");
if (!getProcAddress)
mp_msg(MSGT_VO, MSGL_WARN, "[egl] No eglGetProcAdress");
eglExtStr = getdladdr("eglQueryString");
if (eglExtStr)
eglstr = eglExtStr(egl_ctx->egl.dpy, EGL_EXTENSIONS);
getFunctions(gl, (void*(*)(const GLubyte*))eglGetProcAddress, eglstr);
if (!gl->BindProgram)
getFunctions(gl, NULL, eglstr);
return true;
}
static void egl_create_window(struct vo_wayland_state *wl,
struct egl_context *egl_ctx,
uint32_t width,
uint32_t height)
{
EGLBoolean ret;
wl->window->pending_width = width;
wl->window->pending_height = height;
wl->window->width = width;
wl->window->height = height;
egl_ctx->egl_window = wl_egl_window_create(wl->window->surface,
wl->window->width,
wl->window->height);
egl_ctx->egl_surface = eglCreateWindowSurface(egl_ctx->egl.dpy,
egl_ctx->egl.conf,
egl_ctx->egl_window,
NULL);
ret = eglMakeCurrent(egl_ctx->egl.dpy,
egl_ctx->egl_surface,
egl_ctx->egl_surface,
egl_ctx->egl.ctx);
assert(ret == EGL_TRUE);
wl_display_dispatch_pending(wl->display->display);
}
static bool config_window_wayland(struct MPGLContext *ctx,
uint32_t d_width,
uint32_t d_height,
uint32_t flags)
{
struct egl_context * egl_ctx = ctx->priv;
struct vo_wayland_state * wl = ctx->vo->wayland;
bool ret = false;
wl->window->pending_width = d_width;
wl->window->pending_height = d_height;
wl->window->width = d_width;
wl->window->height = d_height;
vo_wayland_update_window_title(ctx->vo);
if ((VOFLAG_FULLSCREEN & flags) && wl->window->type != TYPE_FULLSCREEN)
vo_wayland_fullscreen(ctx->vo);
if (!egl_ctx->egl.ctx) {
/* Create OpenGL context */
ret = egl_create_context(wl, egl_ctx, ctx);
/* If successfully created the context and we don't want to hide the
* window than also create the window immediately */
if (ret && !(VOFLAG_HIDDEN & flags))
egl_create_window(wl, egl_ctx, d_width, d_height);
return ret;
}
else {
/* If the window exists just resize it */
if (egl_ctx->egl_window)
egl_resize_func(wl, egl_ctx);
else {
/* If the context exists and the hidden flag is unset then
* create the window */
if (!(VOFLAG_HIDDEN & flags))
egl_create_window(wl, egl_ctx, d_width, d_height);
}
return true;
}
}
static void releaseGlContext_wayland(MPGLContext *ctx)
{
GL *gl = ctx->gl;
struct egl_context * egl_ctx = ctx->priv;
gl->Finish();
eglMakeCurrent(egl_ctx->egl.dpy, NULL, NULL, EGL_NO_CONTEXT);
eglDestroyContext(egl_ctx->egl.dpy, egl_ctx->egl.ctx);
eglTerminate(egl_ctx->egl.dpy);
eglReleaseThread();
wl_egl_window_destroy(egl_ctx->egl_window);
egl_ctx->egl.ctx = NULL;
}
static void swapGlBuffers_wayland(MPGLContext *ctx)
{
struct egl_context * egl_ctx = ctx->priv;
struct vo_wayland_state *wl = ctx->vo->wayland;
eglSwapBuffers(egl_ctx->egl.dpy, egl_ctx->egl_surface);
/* resize window after the buffers have swapped
* makes resizing more fluid */
if (wl->window->resize_needed) {
wl_egl_window_get_attached_size(egl_ctx->egl_window,
&wl->window->width,
&wl->window->height);
egl_resize_func(wl, egl_ctx);
}
}
#endif
struct backend {
const char *name;
enum MPGLType type;
};
static struct backend backends[] = {
{"auto", GLTYPE_AUTO},
{"cocoa", GLTYPE_COCOA},
{"win", GLTYPE_W32},
{"x11", GLTYPE_X11},
{"wayland", GLTYPE_WAYLAND},
{0}
};
int mpgl_find_backend(const char *name)
{
for (const struct backend *entry = backends; entry->name; entry++) {
if (strcmp(entry->name, name) == 0)
return entry->type;
}
return -1;
}
MPGLContext *mpgl_init(enum MPGLType type, struct vo *vo)
{
MPGLContext *ctx;
if (type == GLTYPE_AUTO) {
ctx = mpgl_init(GLTYPE_COCOA, vo);
if (ctx)
return ctx;
ctx = mpgl_init(GLTYPE_W32, vo);
if (ctx)
return ctx;
ctx = mpgl_init(GLTYPE_X11, vo);
if (ctx)
return ctx;
return mpgl_init(GLTYPE_WAYLAND, vo);
}
ctx = talloc_zero(NULL, MPGLContext);
*ctx = (MPGLContext) {
.gl = talloc_zero(ctx, GL),
.type = type,
.vo = vo,
};
switch (ctx->type) {
#ifdef CONFIG_GL_COCOA
case GLTYPE_COCOA:
ctx->config_window = config_window_cocoa;
ctx->releaseGlContext = releaseGlContext_cocoa;
ctx->swapGlBuffers = swapGlBuffers_cocoa;
ctx->check_events = vo_cocoa_check_events;
ctx->update_xinerama_info = vo_cocoa_update_xinerama_info;
ctx->fullscreen = vo_cocoa_fullscreen;
ctx->ontop = vo_cocoa_ontop;
ctx->vo_init = vo_cocoa_init;
ctx->pause = vo_cocoa_pause;
ctx->resume = vo_cocoa_resume;
ctx->vo_uninit = vo_cocoa_uninit;
break;
#endif
#ifdef CONFIG_GL_WIN32
case GLTYPE_W32:
ctx->priv = talloc_zero(ctx, struct w32_context);
ctx->config_window = config_window_w32;
ctx->releaseGlContext = releaseGlContext_w32;
ctx->swapGlBuffers = swapGlBuffers_w32;
ctx->update_xinerama_info = w32_update_xinerama_info;
ctx->border = vo_w32_border;
ctx->check_events = vo_w32_check_events;
ctx->fullscreen = vo_w32_fullscreen;
ctx->ontop = vo_w32_ontop;
ctx->vo_init = vo_w32_init;
ctx->vo_uninit = vo_w32_uninit;
break;
#endif
#ifdef CONFIG_GL_X11
case GLTYPE_X11:
ctx->priv = talloc_zero(ctx, struct glx_context);
ctx->config_window = config_window_x11;
ctx->releaseGlContext = releaseGlContext_x11;
ctx->swapGlBuffers = swapGlBuffers_x11;
ctx->update_xinerama_info = vo_x11_update_screeninfo;
ctx->border = vo_x11_border;
ctx->check_events = vo_x11_check_events;
ctx->fullscreen = vo_x11_fullscreen;
ctx->ontop = vo_x11_ontop;
ctx->vo_init = vo_x11_init;
ctx->vo_uninit = vo_x11_uninit;
break;
#endif
#ifdef CONFIG_GL_WAYLAND
case GLTYPE_WAYLAND:
ctx->priv = talloc_zero(ctx, struct egl_context);
ctx->config_window = config_window_wayland;
ctx->releaseGlContext = releaseGlContext_wayland;
ctx->swapGlBuffers = swapGlBuffers_wayland;
ctx->update_xinerama_info = vo_wayland_update_screeninfo;
ctx->border = vo_wayland_border;
ctx->check_events = vo_wayland_check_events;
ctx->fullscreen = vo_wayland_fullscreen;
ctx->ontop = vo_wayland_ontop;
ctx->vo_init = vo_wayland_init;
ctx->vo_uninit = vo_wayland_uninit;
break;
#endif
}
if (ctx->vo_init && ctx->vo_init(vo))
return ctx;
talloc_free(ctx);
return NULL;
}
bool mpgl_config_window(struct MPGLContext *ctx, int gl_caps, uint32_t d_width,
uint32_t d_height, uint32_t flags)
{
gl_caps |= MPGL_CAP_GL;
ctx->requested_gl_version = (gl_caps & MPGL_CAP_GL_LEGACY)
? MPGL_VER(2, 1) : MPGL_VER(3, 0);
if (ctx->config_window(ctx, d_width, d_height, flags)) {
int missing = (ctx->gl->mpgl_caps & gl_caps) ^ gl_caps;
if (!missing)
return true;
mp_msg(MSGT_VO, MSGL_WARN, "[gl] Missing OpenGL features:");
list_features(missing, MSGL_WARN, false);
if (missing & MPGL_CAP_NO_SW) {
mp_msg(MSGT_VO, MSGL_WARN, "[gl] Rejecting suspected software "
"OpenGL renderer.\n");
}
}
mp_msg(MSGT_VO, MSGL_ERR, "[gl] OpenGL context creation failed!\n");
return false;
}
void mpgl_uninit(MPGLContext *ctx)
{
if (ctx) {
ctx->releaseGlContext(ctx);
ctx->vo_uninit(ctx->vo);
}
talloc_free(ctx);
}
void mp_log_source(int mod, int lev, const char *src)
{
int line = 1;
if (!src)
return;
while (*src) {
const char *end = strchr(src, '\n');
const char *next = end + 1;
if (!end)
next = end = src + strlen(src);
mp_msg(mod, lev, "[%3d] %.*s\n", line, (int)(end - src), src);
line++;
src = next;
}
}
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