static void *osmesa_ctx_init(video_frame_info_t *video_info, void *video_driver)
{
#ifdef HAVE_OSMESA_CREATE_CONTEXT_ATTRIBS
const int attribs[] = {
OSMESA_FORMAT, g_osmesa_format,
OSMESA_DEPTH_BITS, 0,
OSMESA_STENCIL_BITS, 0,
OSMESA_ACCUM_BITS, 0,
OSMESA_PROFILE, g_osmesa_profile,
OSMESA_CONTEXT_MAJOR_VERSION, g_osmesa_major,
OSMESA_CONTEXT_MINOR_VERSION, g_osmesa_minor,
0, 0
};
#endif
gfx_ctx_osmesa_data_t *osmesa = (gfx_ctx_osmesa_data_t*)
calloc(1, sizeof(gfx_ctx_osmesa_data_t));
if (!osmesa)
goto error;
#ifdef HAVE_OSMESA_CREATE_CONTEXT_ATTRIBS
osmesa->ctx = OSMesaCreateContextAttribs(attribs, NULL);
#endif
#ifdef HAVE_OSMESA_CREATE_CONTEXT_EXT
if (!osmesa->ctx)
osmesa->ctx = OSMesaCreateContextExt(g_osmesa_format, 0, 0, 0, NULL);
#endif
if (!osmesa->ctx)
{
#if defined(HAVE_OSMESA_CREATE_CONTEXT_ATTRIBS) || defined(HAVE_OSMESA_CREATE_CONTEXT_EXT)
RARCH_WARN("[osmesa]: Falling back to standard context creation.\n");
#endif
osmesa->ctx = OSMesaCreateContext(g_osmesa_format, NULL);
}
if (!osmesa->ctx)
goto error;
osmesa->pixsize = g_osmesa_bpp;
return osmesa;
error:
if (osmesa)
free(osmesa);
RARCH_WARN("[omesa]: Failed to initialize the context driver.\n");
return NULL;
}
OSGLContext_osmesa::OSGLContext_osmesa(const FramebufferConfig& pixelFormatAttrs,
int /*major*/,
int /*minor*/,
bool /*coreProfile*/,
const GLRendererID& rendererID,
const OSGLContext_osmesa* shareContex)
: _imp(new OSGLContext_osmesaPrivate())
{
GLenum format = GL_RGBA;
int depthBits = pixelFormatAttrs.depthBits;
int stencilBits = pixelFormatAttrs.stencilBits;
int accumBits = pixelFormatAttrs.accumRedBits + pixelFormatAttrs.accumGreenBits + pixelFormatAttrs.accumBlueBits + pixelFormatAttrs.accumAlphaBits;
/* Create an RGBA-mode context */
#if defined(OSMESA_GALLIUM_DRIVER) && (OSMESA_MAJOR_VERSION * 100 + OSMESA_MINOR_VERSION >= 1102)
/* specify Z, stencil, accum sizes */
{
int cpuDriver = rendererID.renderID;
int attribs[100], n = 0;
attribs[n++] = OSMESA_FORMAT;
attribs[n++] = format;
attribs[n++] = OSMESA_DEPTH_BITS;
attribs[n++] = depthBits;
attribs[n++] = OSMESA_STENCIL_BITS;
attribs[n++] = stencilBits;
attribs[n++] = OSMESA_ACCUM_BITS;
attribs[n++] = accumBits;
attribs[n++] = OSMESA_GALLIUM_DRIVER;
attribs[n++] = (int)cpuDriver;
attribs[n++] = 0;
_imp->ctx = OSMesaCreateContextAttribs( attribs, shareContex ? shareContex->_imp->ctx : 0);
}
#else
Q_UNUSED(rendererID);
#if OSMESA_MAJOR_VERSION * 100 + OSMESA_MINOR_VERSION >= 305
/* specify Z, stencil, accum sizes */
_imp->ctx = OSMesaCreateContextExt( format, depthBits, stencilBits, accumBits, shareContex ? shareContex->_imp->ctx : 0);
#else
_imp->ctx = OSMesaCreateContext( format, shareContex ? shareContex->_imp->ctx : 0);
#endif
#endif
if (!_imp->ctx) {
throw std::runtime_error("OSMesaCreateContext failed");
}
}
/**
* New in Mesa 3.5
*
* Create context and specify size of ancillary buffers.
*/
GLAPI OSMesaContext GLAPIENTRY
OSMesaCreateContextExt(GLenum format, GLint depthBits, GLint stencilBits,
GLint accumBits, OSMesaContext sharelist)
{
int attribs[100], n = 0;
attribs[n++] = OSMESA_FORMAT;
attribs[n++] = format;
attribs[n++] = OSMESA_DEPTH_BITS;
attribs[n++] = depthBits;
attribs[n++] = OSMESA_STENCIL_BITS;
attribs[n++] = stencilBits;
attribs[n++] = OSMESA_ACCUM_BITS;
attribs[n++] = accumBits;
attribs[n++] = 0;
return OSMesaCreateContextAttribs(attribs, sharelist);
}
GLFWbool _glfwCreateContextOSMesa(_GLFWwindow* window,
const _GLFWctxconfig* ctxconfig,
const _GLFWfbconfig* fbconfig)
{
OSMesaContext share = NULL;
const int accumBits = fbconfig->accumRedBits +
fbconfig->accumGreenBits +
fbconfig->accumBlueBits +
fbconfig->accumAlphaBits;
if (ctxconfig->client == GLFW_OPENGL_ES_API)
{
_glfwInputError(GLFW_API_UNAVAILABLE,
"OSMesa: OpenGL ES is not available on OSMesa");
return GLFW_FALSE;
}
if (ctxconfig->share)
share = ctxconfig->share->context.osmesa.handle;
if (OSMesaCreateContextAttribs)
{
int index = 0, attribs[40];
setAttrib(OSMESA_FORMAT, OSMESA_RGBA);
setAttrib(OSMESA_DEPTH_BITS, fbconfig->depthBits);
setAttrib(OSMESA_STENCIL_BITS, fbconfig->stencilBits);
setAttrib(OSMESA_ACCUM_BITS, accumBits);
if (ctxconfig->profile == GLFW_OPENGL_CORE_PROFILE)
{
setAttrib(OSMESA_PROFILE, OSMESA_CORE_PROFILE);
}
else if (ctxconfig->profile == GLFW_OPENGL_COMPAT_PROFILE)
{
setAttrib(OSMESA_PROFILE, OSMESA_COMPAT_PROFILE);
}
if (ctxconfig->major != 1 || ctxconfig->minor != 0)
{
setAttrib(OSMESA_CONTEXT_MAJOR_VERSION, ctxconfig->major);
setAttrib(OSMESA_CONTEXT_MINOR_VERSION, ctxconfig->minor);
}
if (ctxconfig->forward)
{
_glfwInputError(GLFW_VERSION_UNAVAILABLE,
"OSMesa: Foward-compatible contexts not supported");
return GLFW_FALSE;
}
setAttrib(0, 0);
window->context.osmesa.handle =
OSMesaCreateContextAttribs(attribs, share);
}
else
{
if (ctxconfig->profile)
{
_glfwInputError(GLFW_VERSION_UNAVAILABLE,
"OSMesa: OpenGL profiles unavailable");
return GLFW_FALSE;
}
window->context.osmesa.handle =
OSMesaCreateContextExt(OSMESA_RGBA,
fbconfig->depthBits,
fbconfig->stencilBits,
accumBits,
share);
}
if (window->context.osmesa.handle == NULL)
{
_glfwInputError(GLFW_VERSION_UNAVAILABLE,
"OSMesa: Failed to create context");
return GLFW_FALSE;
}
window->context.makeCurrent = makeContextCurrentOSMesa;
window->context.swapBuffers = swapBuffersOSMesa;
window->context.swapInterval = swapIntervalOSMesa;
window->context.extensionSupported = extensionSupportedOSMesa;
window->context.getProcAddress = getProcAddressOSMesa;
window->context.destroy = destroyContextOSMesa;
return GLFW_TRUE;
}
