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| author | github-classroom[bot] <66690702+github-classroom[bot]@users.noreply.github.com> | 2024-03-19 02:01:17 +0000 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2024-03-19 02:01:17 +0000 |
| commit | 0f8d0e3cfdbd9b11b2357ed3e1a11375e7af8e80 (patch) | |
| tree | 48b88b3b3b3a522a90c38b2178363a163a32f2ee /glew/auto/src/glew_init_egl.c | |
Initial commit
Diffstat (limited to 'glew/auto/src/glew_init_egl.c')
| -rw-r--r-- | glew/auto/src/glew_init_egl.c | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/glew/auto/src/glew_init_egl.c b/glew/auto/src/glew_init_egl.c new file mode 100644 index 0000000..1502ef6 --- /dev/null +++ b/glew/auto/src/glew_init_egl.c @@ -0,0 +1,45 @@ + /* ------------------------------------------------------------------------ */ + +GLboolean eglewGetExtension (const char* name) +{ + const GLubyte* start; + const GLubyte* end; + + start = (const GLubyte*) eglQueryString(eglGetCurrentDisplay(), EGL_EXTENSIONS); + if (0 == start) return GL_FALSE; + end = start + _glewStrLen(start); + return _glewSearchExtension(name, start, end); +} + +GLenum eglewInit (EGLDisplay display) +{ + EGLint major, minor; + const GLubyte* extStart; + const GLubyte* extEnd; + PFNEGLINITIALIZEPROC initialize = NULL; + PFNEGLQUERYSTRINGPROC queryString = NULL; + + /* Load necessary entry points */ + initialize = (PFNEGLINITIALIZEPROC) glewGetProcAddress("eglInitialize"); + queryString = (PFNEGLQUERYSTRINGPROC) glewGetProcAddress("eglQueryString"); + if (!initialize || !queryString) + return 1; + + /* query EGL version */ + if (initialize(display, &major, &minor) != EGL_TRUE) + return 1; + + EGLEW_VERSION_1_5 = ( major > 1 ) || ( major == 1 && minor >= 5 ) ? GL_TRUE : GL_FALSE; + EGLEW_VERSION_1_4 = EGLEW_VERSION_1_5 == GL_TRUE || ( major == 1 && minor >= 4 ) ? GL_TRUE : GL_FALSE; + EGLEW_VERSION_1_3 = EGLEW_VERSION_1_4 == GL_TRUE || ( major == 1 && minor >= 3 ) ? GL_TRUE : GL_FALSE; + EGLEW_VERSION_1_2 = EGLEW_VERSION_1_3 == GL_TRUE || ( major == 1 && minor >= 2 ) ? GL_TRUE : GL_FALSE; + EGLEW_VERSION_1_1 = EGLEW_VERSION_1_2 == GL_TRUE || ( major == 1 && minor >= 1 ) ? GL_TRUE : GL_FALSE; + EGLEW_VERSION_1_0 = EGLEW_VERSION_1_1 == GL_TRUE || ( major == 1 && minor >= 0 ) ? GL_TRUE : GL_FALSE; + + /* query EGL extension string */ + extStart = (const GLubyte*) queryString(display, EGL_EXTENSIONS); + if (extStart == 0) + extStart = (const GLubyte *)""; + extEnd = extStart + _glewStrLen(extStart); + + /* initialize extensions */ |