SDL_naclopengles.c
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/*
Simple DirectMedia Layer
Copyright (C) 1997-2019 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: */
Sint32
int32_t Sint32
Definition: SDL_stdinc.h:197
SDL_VideoDevice::driverdata
void * driverdata
Definition: SDL_sysvideo.h:381
NACL_GLES_SetSwapInterval
int NACL_GLES_SetSwapInterval(_THIS, int interval)
SDL_naclvideo.h
NULL
#define NULL
Definition: begin_code.h:167
attribs
const GLint * attribs
Definition: SDL_opengl_glext.h:9688
SDL_VideoDevice::multisamplesamples
int multisamplesamples
Definition: SDL_sysvideo.h:341
SDL_VideoDevice::blue_size
int blue_size
Definition: SDL_sysvideo.h:329
callback
static Uint32 callback(Uint32 interval, void *param)
Definition: testtimer.c:34
path
GLsizei const GLchar *const * path
Definition: SDL_opengl_glext.h:3730
SDL_VideoDevice::depth_size
int depth_size
Definition: SDL_sysvideo.h:331
SDL_VideoDevice::red_size
int red_size
Definition: SDL_sysvideo.h:327
SDL_Window
The type used to identify a window.
Definition: SDL_sysvideo.h:73
NACL_GLES_GetProcAddress
void * NACL_GLES_GetProcAddress(_THIS, const char *proc)
context
static screen_context_t context
Definition: video.c:25
_this
static SDL_VideoDevice * _this
Definition: SDL_video.c:118
SDL_VideoData::instance
PP_Instance instance
Definition: SDL_naclvideo.h:57
window
EGLSurface EGLNativeWindowType * window
Definition: eglext.h:1025
NACL_GLES_MakeCurrent
int NACL_GLES_MakeCurrent(_THIS, SDL_Window *window, SDL_GLContext context)
SDL_VideoDevice::multisamplebuffers
int multisamplebuffers
Definition: SDL_sysvideo.h:340
SDL_VideoDevice::share_with_current_context
int share_with_current_context
Definition: SDL_sysvideo.h:347
SDL_VideoDevice::green_size
int green_size
Definition: SDL_sysvideo.h:328
_THIS
#define _THIS
Definition: SDL_alsa_audio.h:31
NACL_GLES_UnloadLibrary
void NACL_GLES_UnloadLibrary(_THIS)
SDL_VideoDevice::gl_config
struct SDL_VideoDevice::@262 gl_config
NACL_GLES_DeleteContext
void NACL_GLES_DeleteContext(_THIS, SDL_GLContext context)
SDL_GL_GetCurrentContext
#define SDL_GL_GetCurrentContext
Definition: SDL_dynapi_overrides.h:562
NACL_GLES_CreateContext
SDL_GLContext NACL_GLES_CreateContext(_THIS, SDL_Window *window)
SDL_VideoData::ppb_core
const PPB_Core * ppb_core
Definition: SDL_naclvideo.h:44
SDL_GLContext
void * SDL_GLContext
An opaque handle to an OpenGL context.
Definition: SDL_video.h:193
SDL_SetError
#define SDL_SetError
Definition: SDL_dynapi_overrides.h:30
SDL_GL_MakeCurrent
#define SDL_GL_MakeCurrent
Definition: SDL_dynapi_overrides.h:560
NACL_GLES_LoadLibrary
int NACL_GLES_LoadLibrary(_THIS, const char *path)
SDL_VideoDevice::alpha_size
int alpha_size
Definition: SDL_sysvideo.h:330
SDL_video.h
SDL_Unsupported
#define SDL_Unsupported()
Definition: SDL_error.h:53
SDL_VideoDevice::stencil_size
int stencil_size
Definition: SDL_sysvideo.h:333
SDL_VideoData::ppb_graphics
const PPB_Graphics3D * ppb_graphics
Definition: SDL_naclvideo.h:42
SDL_VideoData::ppb_instance
const PPB_Instance * ppb_instance
Definition: SDL_naclvideo.h:46
NACL_GLES_GetSwapInterval
int NACL_GLES_GetSwapInterval(_THIS)
NACL_GLES_SwapWindow
int NACL_GLES_SwapWindow(_THIS, SDL_Window *window)
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_VideoData
Definition: SDL_androidvideo.h:36