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55 lines
1.4 KiB
C
55 lines
1.4 KiB
C
#pragma once
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// windows hack: Windows SDK OpenGL headers include WINGDIAPI in their declarations,
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// which can only be found in the Windows API
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#ifdef _WIN32
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#define WIN32_LEAN_AND_MEAN
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#include <windows.h>
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#endif
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#ifndef GL_GLEXT_PROTOTYPES
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#define GL_GLEXT_PROTOTYPES 1
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#endif
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#include <GL/gl.h>
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// #include <GL/glext.h>
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#include <cstdio>
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#ifndef GL_ARRAY_BUFFER
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#define GL_ARRAY_BUFFER 0x8892
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#endif
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#ifndef GL_ELEMENT_ARRAY_BUFFER
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#define GL_ELEMENT_ARRAY_BUFFER 0x8893
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#endif
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#ifndef GL_STATIC_DRAW
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#define GL_STATIC_DRAW 0x88B4
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#endif
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#ifndef GL_VERTEX_SHADER
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#define GL_VERTEX_SHADER 0x8B31
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#endif
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#ifndef GL_FRAGMENT_SHADER
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#define GL_FRAGMENT_SHADER 0x8B30
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#endif
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#ifndef GL_QUADS
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#define GL_QUADS 0x0007
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#endif
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static inline bool gl3_load() {
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const char* ver = (const char*)glGetString(GL_VERSION);
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if (!ver) {
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fprintf(stderr, "[gl3_loader] ERROR: No active GL context found.\n");
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return false;
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}
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int major = 0, minor = 0;
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if (sscanf(ver, "%d.%d", &major, &minor) >= 2) {
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if (major < 3 || (major == 3 && minor < 3)) {
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fprintf(stderr,
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"[gl3_loader] ERROR: Need GL 3.3, but system provides %s\n",
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ver);
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return false;
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}
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}
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fprintf(
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stderr,
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"[gl3_loader] GL Version: %s, it's all okay!! until android support.\n",
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ver);
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return true;
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} |