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Also check for required OpenGL extensions on OS X

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This commit is contained in:
Kovid Goyal 2017-08-21 11:21:57 +05:30
parent 5117a2c17a
commit a9f3a698d2
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GPG Key ID: 06BC317B515ACE7C
2 changed files with 27 additions and 1 deletions
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24
kitty/gl.h
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@ -652,6 +652,29 @@ VertexAttribPointer(PyObject UNUSED *self, PyObject *args) {
Py_RETURN_NONE;
}
static PyObject*
check_for_extensions(PyObject UNUSED *self) {
GLint n = 0, i, left = 2;
glGetIntegerv(GL_NUM_EXTENSIONS, &n);
bool texture_storage = false, texture_buffer_object_rgb32 = false;
#define CHECK(name) if (!name) { \
if (strstr((const char*)ext, "GL_ARB_" #name) == (const char *)ext) { left--; name = true; } \
}
for (i = 0; i < n; i++) {
const GLubyte *ext = glGetStringi(GL_EXTENSIONS, i);
CHECK(texture_storage); CHECK(texture_buffer_object_rgb32);
if (left < 1) break;
}
#undef CHECK
if (left > 0) {
#define CHECK(name) if (!name) { PyErr_Format(PyExc_RuntimeError, "The OpenGL driver on this system is missing the required extension: GL_ARB_%s", #name); return NULL; }
CHECK(texture_storage); CHECK(texture_buffer_object_rgb32);
#undef CHECK
}
Py_RETURN_NONE;
}
int add_module_gl_constants(PyObject *module) {
#define GLC(x) if (PyModule_AddIntConstant(module, #x, x) != 0) { PyErr_NoMemory(); return 0; }
GLC(GL_VERSION);
@ -686,6 +709,7 @@ int add_module_gl_constants(PyObject *module) {
{"enable_automatic_opengl_error_checking", (PyCFunction)enable_automatic_error_checking, METH_O, NULL}, \
{"copy_image_sub_data", (PyCFunction)copy_image_sub_data, METH_VARARGS, NULL}, \
{"glewInit", (PyCFunction)_glewInit, METH_NOARGS, NULL}, \
{"check_for_extensions", (PyCFunction)check_for_extensions, METH_NOARGS, NULL}, \
METH(Viewport, METH_VARARGS) \
METH(CheckError, METH_NOARGS) \
METH(ClearColor, METH_VARARGS) \

4
kitty/main.py
View File

@ -25,7 +25,7 @@ from .fast_data_types import (
GLFW_STENCIL_BITS, Window, change_wcwidth,
enable_automatic_opengl_error_checking, glClear, glClearColor, glewInit,
glfw_init, glfw_set_error_callback, glfw_swap_interval, glfw_terminate,
glfw_wait_events, glfw_window_hint, glfw_init_hint_string
glfw_wait_events, glfw_window_hint, glfw_init_hint_string, check_for_extensions
)
try:
from .fast_data_types import GLFW_X11_WM_CLASS_NAME, GLFW_X11_WM_CLASS_CLASS
@ -220,6 +220,8 @@ def run_app(opts, args):
viewport_size.x_ratio = viewport_size.width / float(w)
viewport_size.y_ratio = viewport_size.height / float(h)
glewInit()
if isosx:
check_for_extensions()
boss = Boss(window, opts, args)
boss.start()
clear_buffers(window, opts)