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Removed commented-out code, added error reporting.

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This commit is contained in:
Camilla Berglund 2012-07-23 18:40:31 +02:00
parent 3bb04b3a76
commit a3c4b96c91
1 changed files with 20 additions and 38 deletions
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58
src/opengl.c
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@ -39,58 +39,39 @@
// Parses the client API version string and extracts the version number
//========================================================================
static void parseGLVersion(int* major, int* minor, int* rev)
static GLboolean parseGLVersion(int* major, int* minor, int* rev)
{
GLuint _major, _minor = 0, _rev = 0;
const GLubyte* version;
const char* version;
version = glGetString(GL_VERSION);
version = (const char*) glGetString(GL_VERSION);
if (!version)
return;
#if 0
// Old version detection code. This doesn't work very well
const GLubyte* ptr;
const char* glesPrefix = "OpenGL ES ";
if (strncmp((const char*) version, glesPrefix, strlen(glesPrefix)) == 0)
{
// The version string on OpenGL ES has a prefix before the version
// number, so we skip past it and then continue as normal
version += strlen(glesPrefix);
_glfwSetError(GLFW_PLATFORM_ERROR,
"X11/EGL: No version string available");
return GL_FALSE;
}
// Parse version from string
ptr = version;
for (_major = 0; *ptr >= '0' && *ptr <= '9'; ptr++)
_major = 10 * _major + (*ptr - '0');
if (*ptr == '.')
for (;;)
{
ptr++;
for (_minor = 0; *ptr >= '0' && *ptr <= '9'; ptr++)
_minor = 10 * _minor + (*ptr - '0');
if (*ptr == '.')
if (*version != '\0')
{
ptr++;
for (_rev = 0; *ptr >= '0' && *ptr <= '9'; ptr++)
_rev = 10 * _rev + (*ptr - '0');
_glfwSetError(GLFW_PLATFORM_ERROR,
"X11/EGL: No version found in version string");
return GL_FALSE;
}
if (sscanf(version, "%d.%d.%d", &_major, &_minor, &_rev))
break;
version++;
}
#endif
// Find version from OpenGL string
for (; version &&
!sscanf((char*)version, "%d.%d.%d", &_major, &_minor, &_rev);
++version);
// Store result
*major = _major;
*minor = _minor;
*rev = _rev;
return GL_TRUE;
}
@ -402,7 +383,8 @@ GLboolean _glfwIsValidContext(_GLFWwindow* window, _GLFWwndconfig* wndconfig)
{
window->clientAPI = wndconfig->clientAPI;
parseGLVersion(&window->glMajor, &window->glMinor, &window->glRevision);
if (!parseGLVersion(&window->glMajor, &window->glMinor, &window->glRevision))
return GL_FALSE;
// Read back forward-compatibility flag
{