static CoglBool
_cogl_winsys_onscreen_init (CoglOnscreen *onscreen,
CoglError **error)
{
CoglFramebuffer *framebuffer = COGL_FRAMEBUFFER (onscreen);
CoglContext *context = framebuffer->context;
CoglDisplay *display = context->display;
CoglDisplayEGL *egl_display = display->winsys;
CoglRenderer *renderer = display->renderer;
CoglRendererEGL *egl_renderer = renderer->winsys;
EGLint attributes[MAX_EGL_CONFIG_ATTRIBS];
EGLConfig egl_config;
EGLint config_count = 0;
EGLBoolean status;
_COGL_RETURN_VAL_IF_FAIL (egl_display->egl_context, FALSE);
egl_attributes_from_framebuffer_config (display,
&framebuffer->config,
attributes);
status = eglChooseConfig (egl_renderer->edpy,
attributes,
&egl_config, 1,
&config_count);
if (status != EGL_TRUE || config_count == 0)
{
_cogl_set_error (error, COGL_WINSYS_ERROR,
COGL_WINSYS_ERROR_CREATE_ONSCREEN,
"Failed to find a suitable EGL configuration");
return FALSE;
}
/* Update the real number of samples_per_pixel now that we have
* found an egl_config... */
if (framebuffer->config.samples_per_pixel)
{
EGLint samples;
status = eglGetConfigAttrib (egl_renderer->edpy,
egl_config,
EGL_SAMPLES, &samples);
g_return_val_if_fail (status == EGL_TRUE, TRUE);
framebuffer->samples_per_pixel = samples;
}
onscreen->winsys = g_slice_new0 (CoglOnscreenEGL);
if (egl_renderer->platform_vtable->onscreen_init &&
!egl_renderer->platform_vtable->onscreen_init (onscreen,
egl_config,
error))
{
g_slice_free (CoglOnscreenEGL, onscreen->winsys);
return FALSE;
}
return TRUE;
}
static bool
_cg_winsys_onscreen_init(cg_onscreen_t *onscreen,
cg_error_t **error)
{
cg_framebuffer_t *framebuffer = CG_FRAMEBUFFER(onscreen);
cg_device_t *dev = framebuffer->dev;
cg_display_t *display = dev->display;
cg_display_egl_t *egl_display = display->winsys;
cg_renderer_t *renderer = display->renderer;
cg_renderer_egl_t *egl_renderer = renderer->winsys;
EGLint attributes[MAX_EGL_CONFIG_ATTRIBS];
EGLConfig egl_config;
EGLint config_count = 0;
EGLBoolean status;
c_return_val_if_fail(egl_display->egl_context, false);
egl_attributes_from_framebuffer_config(
display, &framebuffer->config, attributes);
status = eglChooseConfig(
egl_renderer->edpy, attributes, &egl_config, 1, &config_count);
if (status != EGL_TRUE || config_count == 0) {
_cg_set_error(error,
CG_WINSYS_ERROR,
CG_WINSYS_ERROR_CREATE_ONSCREEN,
"Failed to find a suitable EGL configuration");
return false;
}
/* Update the real number of samples_per_pixel now that we have
* found an egl_config... */
if (framebuffer->config.samples_per_pixel) {
EGLint samples;
status = eglGetConfigAttrib(
egl_renderer->edpy, egl_config, EGL_SAMPLES, &samples);
c_return_val_if_fail(status == EGL_TRUE, true);
framebuffer->samples_per_pixel = samples;
}
onscreen->winsys = c_slice_new0(cg_onscreen_egl_t);
if (egl_renderer->platform_vtable->onscreen_init &&
!egl_renderer->platform_vtable->onscreen_init(
onscreen, egl_config, error)) {
c_slice_free(cg_onscreen_egl_t, onscreen->winsys);
return false;
}
return true;
}
static bool
try_create_context(cg_display_t *display, cg_error_t **error)
{
cg_renderer_t *renderer = display->renderer;
cg_display_egl_t *egl_display = display->winsys;
cg_renderer_egl_t *egl_renderer = renderer->winsys;
EGLDisplay edpy;
EGLConfig config;
EGLint config_count = 0;
EGLBoolean status;
EGLint attribs[9];
EGLint cfg_attribs[MAX_EGL_CONFIG_ATTRIBS];
const char *error_message;
c_return_val_if_fail(egl_display->egl_context == NULL, true);
if (renderer->driver == CG_DRIVER_GL || renderer->driver == CG_DRIVER_GL3)
eglBindAPI(EGL_OPENGL_API);
egl_attributes_from_framebuffer_config(
display, &display->onscreen_template->config, cfg_attribs);
edpy = egl_renderer->edpy;
status = eglChooseConfig(edpy, cfg_attribs, &config, 1, &config_count);
if (status != EGL_TRUE || config_count == 0) {
error_message = "Unable to find a usable EGL configuration";
goto fail;
}
egl_display->egl_config = config;
if (display->renderer->driver == CG_DRIVER_GL3) {
if (!(egl_renderer->private_features &
CG_EGL_WINSYS_FEATURE_CREATE_CONTEXT)) {
error_message = "Driver does not support GL 3 contexts";
goto fail;
}
/* Try to get a core profile 3.1 context with no deprecated features */
attribs[0] = EGL_CONTEXT_MAJOR_VERSION_KHR;
attribs[1] = 3;
attribs[2] = EGL_CONTEXT_MINOR_VERSION_KHR;
attribs[3] = 1;
attribs[4] = EGL_CONTEXT_FLAGS_KHR;
attribs[5] = EGL_CONTEXT_OPENGL_FORWARD_COMPATIBLE_BIT_KHR;
attribs[6] = EGL_CONTEXT_OPENGL_PROFILE_MASK_KHR;
attribs[7] = EGL_CONTEXT_OPENGL_CORE_PROFILE_BIT_KHR;
attribs[8] = EGL_NONE;
} else if (display->renderer->driver == CG_DRIVER_GLES2) {
attribs[0] = EGL_CONTEXT_CLIENT_VERSION;
attribs[1] = 2;
attribs[2] = EGL_NONE;
} else
attribs[0] = EGL_NONE;
egl_display->egl_context =
eglCreateContext(edpy, config, EGL_NO_CONTEXT, attribs);
if (egl_display->egl_context == EGL_NO_CONTEXT) {
error_message = "Unable to create a suitable EGL context";
goto fail;
}
if (egl_renderer->platform_vtable->device_created &&
!egl_renderer->platform_vtable->device_created(display, error))
return false;
return true;
fail:
_cg_set_error(error,
CG_WINSYS_ERROR,
CG_WINSYS_ERROR_CREATE_CONTEXT,
"%s",
error_message);
cleanup_device(display);
return false;
}
static gboolean
try_create_context (CoglDisplay *display,
gboolean with_stencil_buffer,
GError **error)
{
CoglRenderer *renderer = display->renderer;
CoglDisplayEGL *egl_display = display->winsys;
CoglRendererEGL *egl_renderer = renderer->winsys;
EGLDisplay edpy;
EGLConfig config;
EGLint config_count = 0;
EGLBoolean status;
EGLint attribs[3];
EGLint cfg_attribs[MAX_EGL_CONFIG_ATTRIBS];
const char *error_message;
_COGL_RETURN_VAL_IF_FAIL (egl_display->egl_context == NULL, TRUE);
if (renderer->driver == COGL_DRIVER_GL)
eglBindAPI (EGL_OPENGL_API);
if (display->renderer->driver == COGL_DRIVER_GLES2)
{
attribs[0] = EGL_CONTEXT_CLIENT_VERSION;
attribs[1] = 2;
attribs[2] = EGL_NONE;
}
else
attribs[0] = EGL_NONE;
/* Divert to the platform implementation if one is defined */
if (egl_renderer->platform_vtable->try_create_context)
return egl_renderer->platform_vtable->
try_create_context (display, attribs, error);
egl_attributes_from_framebuffer_config (display,
&display->onscreen_template->config,
with_stencil_buffer,
cfg_attribs);
edpy = egl_renderer->edpy;
status = eglChooseConfig (edpy,
cfg_attribs,
&config, 1,
&config_count);
if (status != EGL_TRUE || config_count == 0)
{
error_message = "Unable to find a usable EGL configuration";
goto fail;
}
egl_display->egl_config = config;
egl_display->egl_context = eglCreateContext (edpy,
config,
EGL_NO_CONTEXT,
attribs);
if (egl_display->egl_context == EGL_NO_CONTEXT)
{
error_message = "Unable to create a suitable EGL context";
goto fail;
}
if (egl_renderer->platform_vtable->context_created &&
!egl_renderer->platform_vtable->context_created (display, error))
return FALSE;
return TRUE;
fail:
g_set_error (error, COGL_WINSYS_ERROR,
COGL_WINSYS_ERROR_CREATE_CONTEXT,
"%s", error_message);
return FALSE;
}
