3 int typesize(GLenum type)
7 case GL_BYTE: return sizeof(GLbyte);
8 case GL_SHORT: return sizeof(GLshort);
9 case GL_INT: return sizeof(GLint);
10 case GL_UNSIGNED_BYTE: return sizeof(GLubyte);
11 case GL_UNSIGNED_SHORT: return sizeof(GLushort);
12 case GL_UNSIGNED_INT: return sizeof(GLuint);
13 case GL_FLOAT: return sizeof(GLfloat);
14 case GL_DOUBLE: return sizeof(GLdouble);
15 // Short and byte packed types are broken
20 int formatsize(GLenum format)
24 case GL_COLOR_INDEX: return 1;
25 case GL_STENCIL_INDEX: return 1;
26 case GL_DEPTH_COMPONENT: return 1;
27 case GL_RED: return 1;
28 case GL_GREEN: return 1;
29 case GL_BLUE: return 1;
30 case GL_ALPHA: return 1;
31 case GL_RGB: return 3;
32 case GL_RGBA: return 4;
33 case GL_BGR: return 3;
34 case GL_BGRA: return 4;
35 case GL_LUMINANCE: return 1;
36 case GL_LUMINANCE_ALPHA: return 2;
41 int paramsize(GLenum pname)
45 case GL_VIEWPORT: return 4;
47 // Lighting and material
48 case GL_AMBIENT: return 4;
49 case GL_DIFFUSE: return 4;
50 case GL_AMBIENT_AND_DIFFUSE: return 4;
51 case GL_SPECULAR: return 4;
52 case GL_EMISSION: return 4;
53 case GL_SHININESS: return 1;
54 case GL_COLOR_INDEXES: return 3;
55 case GL_POSITION: return 4;
56 case GL_SPOT_DIRECTION: return 3;
57 case GL_SPOT_EXPONENT: return 1;
58 case GL_SPOT_CUTOFF: return 1;
59 case GL_CONSTANT_ATTENUATION: return 1;
60 case GL_LINEAR_ATTENUATION: return 1;
61 case GL_QUADRATIC_ATTENUATION: return 1;
62 case GL_LIGHT_MODEL_AMBIENT: return 4;
63 case GL_LIGHT_MODEL_LOCAL_VIEWER: return 1;
64 case GL_LIGHT_MODEL_TWO_SIDE: return 1;
65 case GL_LIGHT_MODEL_COLOR_CONTROL: return 1;
68 case GL_TEXTURE_WRAP_S: return 1;
69 case GL_TEXTURE_WRAP_T: return 1;
70 case GL_TEXTURE_WRAP_R: return 1;
71 case GL_TEXTURE_MIN_FILTER: return 1;
72 case GL_TEXTURE_MAG_FILTER: return 1;
73 case GL_TEXTURE_BORDER_COLOR: return 4;
74 case GL_TEXTURE_MIN_LOD: return 1;
75 case GL_TEXTURE_MAX_LOD: return 1;
76 case GL_TEXTURE_BASE_LEVEL: return 1;
77 case GL_TEXTURE_MAX_LEVEL: return 1;
78 case GL_TEXTURE_LOD_BIAS: return 1;
79 case GL_DEPTH_TEXTURE_MODE: return 1;
80 case GL_TEXTURE_COMPARE_MODE: return 1;
81 case GL_TEXTURE_COMPARE_FUNC: return 1;
82 case GL_GENERATE_MIPMAP: return 1;
88 int buffersize(GLenum buffer)
92 case GL_COLOR: return 4;
93 case GL_DEPTH: return 1;
94 case GL_STENCIL: return 1;