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/*
* 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.
*/
#include <OpenGL/OpenGL.h>
#include "cocoa_common.h"
#include "osdep/macosx_versions.h"
#include "gl_common.h"
struct cgl_context {
CGLPixelFormatObj pix;
CGLContextObj ctx;
};
static int set_swap_interval(int enabled)
{
CGLContextObj ctx = CGLGetCurrentContext();
CGLError err = CGLSetParameter(ctx, kCGLCPSwapInterval, &enabled);
return (err == kCGLNoError) ? 0 : -1;
}
static int cgl_color_size(struct MPGLContext *ctx)
{
struct cgl_context *p = ctx->priv;
GLint value;
CGLDescribePixelFormat(p->pix, 0, kCGLPFAColorSize, &value);
return value > 16 ? 8 : 5;
}
static bool create_gl_context(struct MPGLContext *ctx)
{
struct cgl_context *p = ctx->priv;
CGLError err;
CGLOpenGLProfile gl_vers_map[] = {
[2] = kCGLOGLPVersion_Legacy,
#if MAC_OS_X_VERSION_MIN_REQUIRED >= MAC_OS_X_VERSION_10_9
[3] = kCGLOGLPVersion_GL3_Core,
[4] = kCGLOGLPVersion_GL4_Core,
#else
[3] = kCGLOGLPVersion_3_2_Core,
#endif
};
int gl_major = MPGL_VER_GET_MAJOR(ctx->requested_gl_version);
if (gl_major < 2 || gl_major >= MP_ARRAY_SIZE(gl_vers_map)) {
MP_FATAL(ctx->vo, "OpenGL major version %d not supported", gl_major);
return false;
}
CGLPixelFormatAttribute attrs[] = {
kCGLPFAOpenGLProfile,
(CGLPixelFormatAttribute) gl_vers_map[gl_major],
kCGLPFADoubleBuffer,
kCGLPFAAccelerated,
#if MAC_OS_X_VERSION_MIN_REQUIRED >= MAC_OS_X_VERSION_10_8
// leave this as the last entry of the array to not break the fallback
// code
kCGLPFASupportsAutomaticGraphicsSwitching,
#endif
0
};
GLint npix;
err = CGLChoosePixelFormat(attrs, &p->pix, &npix);
if (err == kCGLBadAttribute) {
// kCGLPFASupportsAutomaticGraphicsSwitching is probably not supported
// by the current hardware. Falling back to not using it.
MP_ERR(ctx->vo, "error creating CGL pixel format with automatic GPU "
"switching. falling back\n");
attrs[MP_ARRAY_SIZE(attrs) - 2] = 0;
err = CGLChoosePixelFormat(attrs, &p->pix, &npix);
}
if (err != kCGLNoError) {
MP_FATAL(ctx->vo, "error creating CGL pixel format: %s (%d)\n",
CGLErrorString(err), err);
}
if ((err = CGLCreateContext(p->pix, 0, &p->ctx)) != kCGLNoError) {
MP_FATAL(ctx->vo, "error creating CGL context: %s (%d)\n",
CGLErrorString(err), err);
return false;
}
vo_cocoa_create_nsgl_ctx(ctx->vo, p->ctx);
ctx->depth_r = ctx->depth_g = ctx->depth_b = cgl_color_size(ctx);
mpgl_load_functions(ctx->gl, (void *)vo_cocoa_glgetaddr, NULL, ctx->vo->log);
CGLReleasePixelFormat(p->pix);
return true;
}
static bool config_window_cocoa(struct MPGLContext *ctx, int flags)
{
struct cgl_context *p = ctx->priv;
if (p->ctx == NULL)
if (!create_gl_context(ctx))
return false;
if (!ctx->gl->SwapInterval)
ctx->gl->SwapInterval = set_swap_interval;
vo_cocoa_config_window(ctx->vo, flags, p->ctx);
return true;
}
static void releaseGlContext_cocoa(MPGLContext *ctx)
{
struct cgl_context *p = ctx->priv;
vo_cocoa_release_nsgl_ctx(ctx->vo);
CGLReleaseContext(p->ctx);
}
static void swapGlBuffers_cocoa(MPGLContext *ctx)
{
vo_cocoa_swap_buffers(ctx->vo);
}
static void set_current_cocoa(MPGLContext *ctx, bool current)
{
vo_cocoa_set_current_context(ctx->vo, current);
}
void mpgl_set_backend_cocoa(MPGLContext *ctx)
{
ctx->priv = talloc_zero(ctx, struct cgl_context);
ctx->config_window = config_window_cocoa;
ctx->releaseGlContext = releaseGlContext_cocoa;
ctx->swapGlBuffers = swapGlBuffers_cocoa;
ctx->vo_init = vo_cocoa_init;
ctx->vo_uninit = vo_cocoa_uninit;
ctx->vo_control = vo_cocoa_control;
ctx->set_current = set_current_cocoa;
}
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