Import SDL release-1.2.15

Change-Id: I505c4aea24325cad475f217db5589814b4c75dbf

1 files changed, 406 insertions, 0 deletions

diff --git a/distrib/sdl-1.2.15/src/video/photon/SDL_ph_gl.c b/distrib/sdl-1.2.15/src/video/photon/SDL_ph_gl.c
new file mode 100644
index 0000000..3121777
--- /dev/null
+++ b/distrib/sdl-1.2.15/src/video/photon/SDL_ph_gl.c
@@ -0,0 +1,406 @@
+/*
+    SDL - Simple DirectMedia Layer
+    Copyright (C) 1997-2012 Sam Lantinga
+
+    This library is free software; you can redistribute it 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.
+
+    This library 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
+    Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public
+    License along with this library; if not, write to the Free Software
+    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+
+    Sam Lantinga
+    slouken@libsdl.org
+*/
+#include "SDL_config.h"
+
+#include <dlfcn.h>
+#include "SDL.h"
+#include "SDL_ph_gl.h"
+
+#if SDL_VIDEO_OPENGL
+
+#if (_NTO_VERSION >= 630)
+    /* PhotonGL functions */
+    GLPH_DECLARE_FUNCS;
+#endif /* 6.3.0 */
+
+#if (_NTO_VERSION < 630)
+void ph_GL_SwapBuffers(_THIS)
+{
+    PgSetRegion(PtWidgetRid(window));
+    PdOpenGLContextSwapBuffers(oglctx);
+}
+#else
+void ph_GL_SwapBuffers(_THIS)
+{
+    qnxgl_swap_buffers(oglbuffers);
+}
+#endif /* 6.3.0 */
+
+int ph_GL_GetAttribute(_THIS, SDL_GLattr attrib, int* value)
+{
+    switch (attrib)
+    {
+        case SDL_GL_DOUBLEBUFFER:
+             *value=this->gl_config.double_buffer;
+             break;
+        case SDL_GL_STENCIL_SIZE:
+             *value=this->gl_config.stencil_size;
+             break;
+        case SDL_GL_DEPTH_SIZE:
+             *value=this->gl_config.depth_size;
+             break;
+#if (_NTO_VERSION >= 630)
+        case SDL_GL_RED_SIZE:
+             *value=this->gl_config.red_size;
+             break;
+        case SDL_GL_GREEN_SIZE:
+             *value=this->gl_config.green_size;
+             break;
+        case SDL_GL_BLUE_SIZE:
+             *value=this->gl_config.blue_size;
+             break;
+        case SDL_GL_ALPHA_SIZE:
+             *value=this->gl_config.alpha_size;
+             break;
+        case SDL_GL_ACCUM_RED_SIZE:
+             *value=this->gl_config.accum_red_size;
+             break;
+        case SDL_GL_ACCUM_GREEN_SIZE:
+             *value=this->gl_config.accum_green_size;
+             break;
+        case SDL_GL_ACCUM_BLUE_SIZE:
+             *value=this->gl_config.accum_blue_size;
+             break;
+        case SDL_GL_ACCUM_ALPHA_SIZE:
+             *value=this->gl_config.accum_alpha_size;
+             break;
+        case SDL_GL_STEREO:
+             *value=this->gl_config.stereo;
+             break;
+#endif /* 6.3.0 */
+        default:
+             *value=0;
+             return(-1);
+    }
+    return 0;
+}
+
+#if (_NTO_VERSION < 630)
+int ph_GL_LoadLibrary(_THIS, const char* path)
+{
+    /* if code compiled with SDL_VIDEO_OPENGL, that mean that library already linked */
+    this->gl_config.driver_loaded = 1;
+
+    return 0;
+}
+#else
+int ph_GL_LoadLibrary(_THIS, const char* path)
+{
+    void* handle;
+    int dlopen_flags=RTLD_WORLD | RTLD_GROUP;
+
+    if (this->gl_config.dll_handle!=NULL)
+    {
+        return 0;
+    }
+
+    handle = dlopen(path, dlopen_flags);
+
+    if (handle==NULL)
+    {
+        SDL_SetError("ph_GL_LoadLibrary(): Could not load OpenGL library");
+        return -1;
+    }
+
+    this->gl_config.dll_handle = handle;
+    this->gl_config.driver_loaded = 1;
+
+    SDL_strlcpy(this->gl_config.driver_path, path, SDL_arraysize(this->gl_config.driver_path));
+
+    return 0;
+}
+#endif /* 6.3.0 */
+
+#if (_NTO_VERSION < 630)
+void* ph_GL_GetProcAddress(_THIS, const char* proc)
+{
+    return NULL;
+}
+#else
+void* ph_GL_GetProcAddress(_THIS, const char* proc)
+{
+    void* function;
+
+    if (this->gl_config.dll_handle==NULL)
+    {
+        ph_GL_LoadLibrary(this, DEFAULT_OPENGL);
+        if (this->gl_config.dll_handle==NULL)
+        {
+            return NULL;
+        }
+    }
+   
+    function=qnxgl_get_func(proc, oglctx, 0);
+    if (function==NULL)
+    {
+        function=dlsym(this->gl_config.dll_handle, proc);
+    }
+
+    return function;
+}
+#endif /* 6.3.0 */
+
+#if (_NTO_VERSION < 630)
+int ph_GL_MakeCurrent(_THIS)
+{
+    PgSetRegion(PtWidgetRid(window));
+
+    if (oglctx!=NULL)
+    {
+        PhDCSetCurrent(oglctx);
+    }
+
+    return 0;
+}
+#else
+int ph_GL_MakeCurrent(_THIS)
+{
+    PgSetRegion(PtWidgetRid(window));
+
+    if (oglctx!=NULL)
+    {
+        if (qnxgl_set_current(oglctx) == -1)
+        {
+           return -1;
+        }
+    }
+
+    return 0;
+}
+#endif /* 6.3.0 */
+
+#if (_NTO_VERSION < 630)
+
+/* This code is actual for the Photon3D Runtime which was available prior to 6.3 only */
+
+int ph_SetupOpenGLContext(_THIS, int width, int height, int bpp, Uint32 flags)
+{
+    PhDim_t dim;
+    uint64_t OGLAttrib[PH_OGL_MAX_ATTRIBS];
+    int exposepost=0;
+    int OGLargc;
+
+    dim.w=width;
+    dim.h=height;
+    
+    if ((oglctx!=NULL) && (oglflags==flags) && (oglbpp==bpp))
+    {
+       PdOpenGLContextResize(oglctx, &dim);
+       PhDCSetCurrent(oglctx);
+       return 0;
+    }
+    else
+    {
+       if (oglctx!=NULL)
+       {
+          PhDCSetCurrent(NULL);
+          PhDCRelease(oglctx);
+          oglctx=NULL;
+          exposepost=1;
+       }
+    }
+
+    OGLargc=0;
+    if (this->gl_config.depth_size)
+    {
+        OGLAttrib[OGLargc++]=PHOGL_ATTRIB_DEPTH_BITS;
+        OGLAttrib[OGLargc++]=this->gl_config.depth_size;
+    }
+    if (this->gl_config.stencil_size)
+    {
+        OGLAttrib[OGLargc++]=PHOGL_ATTRIB_STENCIL_BITS;
+        OGLAttrib[OGLargc++]=this->gl_config.stencil_size;
+    }
+    OGLAttrib[OGLargc++]=PHOGL_ATTRIB_FORCE_SW;
+    if (flags & SDL_FULLSCREEN)
+    {
+        OGLAttrib[OGLargc++]=PHOGL_ATTRIB_FULLSCREEN;
+        OGLAttrib[OGLargc++]=PHOGL_ATTRIB_DIRECT;
+        OGLAttrib[OGLargc++]=PHOGL_ATTRIB_FULLSCREEN_BEST;
+        OGLAttrib[OGLargc++]=PHOGL_ATTRIB_FULLSCREEN_CENTER;
+    }
+    OGLAttrib[OGLargc++]=PHOGL_ATTRIB_NONE;
+
+    if (this->gl_config.double_buffer)
+    {
+        oglctx=PdCreateOpenGLContext(2, &dim, 0, OGLAttrib);
+    }
+    else
+    {
+        oglctx=PdCreateOpenGLContext(1, &dim, 0, OGLAttrib);
+    }
+
+    if (oglctx==NULL)
+    {
+        SDL_SetError("ph_SetupOpenGLContext(): cannot create OpenGL context !\n");
+        return -1;
+    }
+
+    PhDCSetCurrent(oglctx);
+
+    PtFlush();
+
+    oglflags=flags;
+    oglbpp=bpp;
+
+    if (exposepost!=0)
+    {
+        /* OpenGL context has been recreated, so report about this fact */
+        SDL_PrivateExpose();
+    }
+
+    return 0;
+}
+
+#else /* _NTO_VERSION */
+
+/* This code is actual for the built-in PhGL support, which became available since 6.3 */
+
+int ph_SetupOpenGLContext(_THIS, int width, int height, int bpp, Uint32 flags)
+{
+    qnxgl_buf_attrib_t qnxgl_attribs[PH_OGL_MAX_ATTRIBS];
+    qnxgl_buf_attrib_t* qnxgl_attribs_slide;
+    int num_interfaces = 0;
+    int num_buffers = 0;
+
+    /* Initialize the OpenGL subsystem */
+
+    num_interfaces = qnxgl_init(NULL, NULL, 0);
+
+    if (num_interfaces < 0)
+    {
+        SDL_SetError("ph_SetupOpenGLContext(): cannot initialize OpenGL subsystem !\n");
+        return -1;
+    }
+    if (num_interfaces == 0)
+    {
+        SDL_SetError("ph_SetupOpenGLContext(): there are no available OpenGL renderers was found !\n");
+        return -1;
+    }
+
+    /* Driver is linked */
+    this->gl_config.driver_loaded=1;
+
+    /* Initialize the OpenGL context attributes */
+    qnxgl_attribs_slide=qnxgl_attribs;
+
+    /* Depth size */
+    if (this->gl_config.depth_size)
+    {
+        fprintf(stderr, "setted depth size %d\n", this->gl_config.depth_size);
+        qnxgl_attribs_slide = qnxgl_attrib_set_depth(qnxgl_attribs_slide, this->gl_config.depth_size);
+    }
+
+    /* Stencil size */
+    if (this->gl_config.stencil_size)
+    {
+        qnxgl_attribs_slide = qnxgl_attrib_set_stencil(qnxgl_attribs_slide, this->gl_config.stencil_size);
+    }
+
+    /* The sum of the accum bits of each channel */
+    if ((this->gl_config.accum_red_size != 0) && (this->gl_config.accum_blue_size != 0) &&
+        (this->gl_config.accum_green_size != 0))
+    {
+        qnxgl_attribs_slide = qnxgl_attrib_set_accum(qnxgl_attribs_slide,
+           this->gl_config.accum_red_size + this->gl_config.accum_blue_size +
+           this->gl_config.accum_green_size + this->gl_config.accum_alpha_size);
+    }
+    
+    /* Stereo mode */
+    if (this->gl_config.stereo)
+    {
+        qnxgl_attribs_slide = qnxgl_attrib_set_stereo(qnxgl_attribs_slide);
+    }
+
+    /* Fullscreen mode */
+    if ((flags & SDL_FULLSCREEN) == SDL_FULLSCREEN)
+    {
+        qnxgl_attribs_slide = qnxgl_attrib_set_hint_fullscreen(qnxgl_attribs_slide);
+    }
+    
+    /* Double buffering mode */
+    if (this->gl_config.double_buffer)
+    {
+        num_buffers=2;
+    }
+    else
+    {
+        num_buffers=1;
+    }
+
+    /* Loading the function pointers so we can use the extensions */
+    GLPH_LOAD_FUNCS_GC(oglctx);
+
+    /* Set the buffers region to be that of our window's region */
+    qnxgl_attribs_slide = glph_attrib_set_region(qnxgl_attribs_slide, PtWidgetRid(window));
+
+    /* End of the attributes array */
+    qnxgl_attribs_slide = qnxgl_attrib_set_end(qnxgl_attribs_slide);
+    
+    /* Create the buffers with the specified color model */
+    fprintf(stderr, "ARGB: %d, %d, %d, %d\n", this->gl_config.alpha_size, this->gl_config.red_size, this->gl_config.green_size, this->gl_config.blue_size);
+    oglbuffers = qnxgl_buffers_create(
+                   QNXGL_FORMAT_BEST_RGB,
+/*                 __QNXGL_BUILD_FORMAT(0, __QNXGL_COLOR_MODEL_RGB, this->gl_config.alpha_size,
+                     this->gl_config.red_size, this->gl_config.green_size, this->gl_config.blue_size), */
+                 num_buffers, width, height, qnxgl_attribs, -1);
+
+
+    if (oglbuffers == NULL)
+    {
+        SDL_SetError("ph_SetupOpenGLContext(): failed to create OpenGL buffers !\n");
+        qnxgl_finish();
+        return -1;
+    }
+
+    /* Create a QNXGL context for the previously created buffer */
+    oglctx = qnxgl_context_create(oglbuffers, NULL);
+
+    if (oglctx == NULL)
+    {
+        SDL_SetError("ph_SetupOpenGLContext(): failed to create OpenGL context !\n");
+        qnxgl_buffers_destroy(oglbuffers);
+        qnxgl_finish();
+        return -1;
+    }
+
+    /* Attempt to make the context current so we can use OpenGL commands */
+    if (qnxgl_set_current(oglctx) == -1)
+    {
+        SDL_SetError("ph_SetupOpenGLContext(): failed to make the OpenGL context current !\n");
+        qnxgl_context_destroy(oglctx);
+        qnxgl_buffers_destroy(oglbuffers);
+        qnxgl_finish();
+        return -1;
+    }
+
+    PtFlush();
+
+    oglflags=flags;
+    oglbpp=bpp;
+
+    return 0;
+}
+
+#endif /* _NTO_VERSION */
+
+#endif /* SDL_VIDEO_OPENGL */