SDL_naclopengles.c
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/*
Simple DirectMedia Layer
Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "../../SDL_internal.h"
#if SDL_VIDEO_DRIVER_NACL
/* NaCl SDL video GLES 2 driver implementation */
#include "SDL_video.h"
#include "SDL_naclvideo.h"
#if SDL_LOADSO_DLOPEN
#include "dlfcn.h"
#endif
#include "ppapi/gles2/gl2ext_ppapi.h"
#include "ppapi_simple/ps.h"
/* GL functions */
int
NACL_GLES_LoadLibrary(_THIS, const char *path)
{
/* FIXME: Support dynamic linking when PNACL supports it */
return glInitializePPAPI(PSGetInterface) == 0;
}
void *
NACL_GLES_GetProcAddress(_THIS, const char *proc)
{
#if SDL_LOADSO_DLOPEN
return dlsym( 0 /* RTLD_DEFAULT */, proc);
#else
return NULL;
#endif
}
void
NACL_GLES_UnloadLibrary(_THIS)
{
/* FIXME: Support dynamic linking when PNACL supports it */
glTerminatePPAPI();
}
int
NACL_GLES_MakeCurrent(_THIS, SDL_Window * window, SDL_GLContext sdl_context)
{
SDL_VideoData *driverdata = (SDL_VideoData *) _this->driverdata;
/* FIXME: Check threading issues...otherwise use a hardcoded _this->context across all threads */
driverdata->ppb_instance->BindGraphics(driverdata->instance, (PP_Resource) sdl_context);
glSetCurrentContextPPAPI((PP_Resource) sdl_context);
return 0;
}
SDL_GLContext
NACL_GLES_CreateContext(_THIS, SDL_Window * window)
{
SDL_VideoData *driverdata = (SDL_VideoData *) _this->driverdata;
PP_Resource context, share_context = 0;
/* 64 seems nice. */
Sint32 attribs[64];
int i = 0;
if (_this->gl_config.share_with_current_context) {
share_context = (PP_Resource) SDL_GL_GetCurrentContext();
}
/* FIXME: Some ATTRIBS from PP_Graphics3DAttrib are not set here */
attribs[i++] = PP_GRAPHICS3DATTRIB_WIDTH;
attribs[i++] = window->w;
attribs[i++] = PP_GRAPHICS3DATTRIB_HEIGHT;
attribs[i++] = window->h;
attribs[i++] = PP_GRAPHICS3DATTRIB_RED_SIZE;
attribs[i++] = _this->gl_config.red_size;
attribs[i++] = PP_GRAPHICS3DATTRIB_GREEN_SIZE;
attribs[i++] = _this->gl_config.green_size;
attribs[i++] = PP_GRAPHICS3DATTRIB_BLUE_SIZE;
attribs[i++] = _this->gl_config.blue_size;
if (_this->gl_config.alpha_size) {
attribs[i++] = PP_GRAPHICS3DATTRIB_ALPHA_SIZE;
attribs[i++] = _this->gl_config.alpha_size;
}
/*if (_this->gl_config.buffer_size) {
attribs[i++] = EGL_BUFFER_SIZE;
attribs[i++] = _this->gl_config.buffer_size;
}*/
attribs[i++] = PP_GRAPHICS3DATTRIB_DEPTH_SIZE;
attribs[i++] = _this->gl_config.depth_size;
if (_this->gl_config.stencil_size) {
attribs[i++] = PP_GRAPHICS3DATTRIB_STENCIL_SIZE;
attribs[i++] = _this->gl_config.stencil_size;
}
if (_this->gl_config.multisamplebuffers) {
attribs[i++] = PP_GRAPHICS3DATTRIB_SAMPLE_BUFFERS;
attribs[i++] = _this->gl_config.multisamplebuffers;
}
if (_this->gl_config.multisamplesamples) {
attribs[i++] = PP_GRAPHICS3DATTRIB_SAMPLES;
attribs[i++] = _this->gl_config.multisamplesamples;
}
attribs[i++] = PP_GRAPHICS3DATTRIB_NONE;
context = driverdata->ppb_graphics->Create(driverdata->instance, share_context, attribs);
if (context) {
/* We need to make the context current, otherwise nothing works */
SDL_GL_MakeCurrent(window, (SDL_GLContext) context);
}
return (SDL_GLContext) context;
}
int
NACL_GLES_SetSwapInterval(_THIS, int interval)
{
/* STUB */
return SDL_Unsupported();
}
int
NACL_GLES_GetSwapInterval(_THIS)
{
/* STUB */
return 0;
}
int
NACL_GLES_SwapWindow(_THIS, SDL_Window * window)
{
SDL_VideoData *driverdata = (SDL_VideoData *) _this->driverdata;
struct PP_CompletionCallback callback = { NULL, 0, PP_COMPLETIONCALLBACK_FLAG_NONE };
if (driverdata->ppb_graphics->SwapBuffers((PP_Resource) SDL_GL_GetCurrentContext(), callback ) != 0) {
return SDL_SetError("SwapBuffers failed");
}
return 0;
}
void
NACL_GLES_DeleteContext(_THIS, SDL_GLContext context)
{
SDL_VideoData *driverdata = (SDL_VideoData *) _this->driverdata;
driverdata->ppb_core->ReleaseResource((PP_Resource) context);
}
#endif /* SDL_VIDEO_DRIVER_NACL */
/* vi: set ts=4 sw=4 expandtab: */
attribs
const GLint * attribs
Definition: SDL_opengl_glext.h:9688
SDL_VideoData::ppb_instance
const PPB_Instance * ppb_instance
Definition: SDL_naclvideo.h:46
SDL_Window::w
int w
Definition: SDL_sysvideo.h:80
SDL_VideoDevice::blue_size
int blue_size
Definition: SDL_sysvideo.h:325
SDL_VideoData::ppb_graphics
const PPB_Graphics3D * ppb_graphics
Definition: SDL_naclvideo.h:42
SDL_VideoDevice::driverdata
void * driverdata
Definition: SDL_sysvideo.h:377
context
static screen_context_t context
Definition: video.c:25
NACL_GLES_CreateContext
SDL_GLContext NACL_GLES_CreateContext(_THIS, SDL_Window *window)
_this
static SDL_VideoDevice * _this
Definition: SDL_video.c:121
SDL_VideoDevice::multisamplebuffers
int multisamplebuffers
Definition: SDL_sysvideo.h:336
SDL_VideoDevice::multisamplesamples
int multisamplesamples
Definition: SDL_sysvideo.h:337
SDL_video.h
SDL_GLContext
void * SDL_GLContext
An opaque handle to an OpenGL context.
Definition: SDL_video.h:175
NACL_GLES_SwapWindow
int NACL_GLES_SwapWindow(_THIS, SDL_Window *window)
SDL_VideoDevice::depth_size
int depth_size
Definition: SDL_sysvideo.h:327
SDL_VideoDevice::red_size
int red_size
Definition: SDL_sysvideo.h:323
_THIS
#define _THIS
Definition: SDL_alsa_audio.h:31
SDL_VideoDevice::green_size
int green_size
Definition: SDL_sysvideo.h:324
callback
static Uint32 callback(Uint32 interval, void *param)
Definition: testtimer.c:34
NACL_GLES_GetSwapInterval
int NACL_GLES_GetSwapInterval(_THIS)
SDL_VideoDevice::alpha_size
int alpha_size
Definition: SDL_sysvideo.h:326
SDL_VideoData::instance
PP_Instance instance
Definition: SDL_naclvideo.h:57
Sint32
int32_t Sint32
Definition: SDL_stdinc.h:175
NACL_GLES_LoadLibrary
int NACL_GLES_LoadLibrary(_THIS, const char *path)
SDL_Window::h
int h
Definition: SDL_sysvideo.h:80
SDL_VideoDevice::stencil_size
int stencil_size
Definition: SDL_sysvideo.h:329
i
return Display return Display Bool Bool int int int return Display XEvent Bool(*) XPointer return Display return Display Drawable _Xconst char unsigned int unsigned int return Display Pixmap Pixmap XColor XColor unsigned int unsigned int return Display _Xconst char char int char return Display Visual unsigned int int int char unsigned int unsigned int in i)
Definition: SDL_x11sym.h:50
SDL_VideoDevice::share_with_current_context
int share_with_current_context
Definition: SDL_sysvideo.h:343
NULL
#define NULL
Definition: begin_code.h:164
SDL_GL_GetCurrentContext
#define SDL_GL_GetCurrentContext
Definition: SDL_dynapi_overrides.h:562
SDL_SetError
#define SDL_SetError
Definition: SDL_dynapi_overrides.h:30
NACL_GLES_MakeCurrent
int NACL_GLES_MakeCurrent(_THIS, SDL_Window *window, SDL_GLContext context)
SDL_GL_MakeCurrent
#define SDL_GL_MakeCurrent
Definition: SDL_dynapi_overrides.h:560
window
EGLSurface EGLNativeWindowType * window
Definition: eglext.h:1025
NACL_GLES_DeleteContext
void NACL_GLES_DeleteContext(_THIS, SDL_GLContext context)
NACL_GLES_UnloadLibrary
void NACL_GLES_UnloadLibrary(_THIS)
SDL_Window
The type used to identify a window.
Definition: SDL_sysvideo.h:73
SDL_VideoData
Definition: SDL_androidvideo.h:35
path
GLsizei const GLchar *const * path
Definition: SDL_opengl_glext.h:3730
SDL_VideoDevice::gl_config
struct SDL_VideoDevice::@34 gl_config
SDL_VideoData::ppb_core
const PPB_Core * ppb_core
Definition: SDL_naclvideo.h:44
SDL_naclvideo.h
SDL_Unsupported
#define SDL_Unsupported()
Definition: SDL_error.h:53
NACL_GLES_SetSwapInterval
int NACL_GLES_SetSwapInterval(_THIS, int interval)
NACL_GLES_GetProcAddress
void * NACL_GLES_GetProcAddress(_THIS, const char *proc)