mirror of
https://github.com/MobileGL-Dev/MobileGL
synced 2026-09-08 04:08:32 +09:00
118 lines
3.7 KiB
C++
118 lines
3.7 KiB
C++
//
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// Created by Swung0x48 on 2025/8/22.
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//
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#include "BufferMetrics.h"
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namespace MobileGL {
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namespace MG_Util {
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SizeT GetGLTypeSize(GLenum type) {
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switch (type) {
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// Scalars
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case GL_BYTE:
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case GL_UNSIGNED_BYTE:
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case GL_UNSIGNED_BYTE_3_3_2:
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return 1;
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case GL_SHORT:
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case GL_UNSIGNED_SHORT:
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case GL_HALF_FLOAT:
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case GL_UNSIGNED_SHORT_5_6_5:
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case GL_UNSIGNED_SHORT_4_4_4_4:
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case GL_UNSIGNED_SHORT_5_5_5_1:
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return 2;
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case GL_INT:
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case GL_UNSIGNED_INT:
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case GL_FLOAT:
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case GL_FIXED:
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case GL_INT_2_10_10_10_REV:
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case GL_UNSIGNED_INT_2_10_10_10_REV:
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case GL_UNSIGNED_INT_10F_11F_11F_REV:
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case GL_UNSIGNED_INT_5_9_9_9_REV:
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return 4;
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case GL_DOUBLE:
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#ifdef GL_ARB_gpu_shader_int64
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case GL_UNSIGNED_INT64_ARB:
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case GL_INT64_ARB:
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#endif
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return 8;
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// ---- Vector Types ----
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// 2-component vec
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case GL_FLOAT_VEC2:
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case GL_INT_VEC2:
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case GL_UNSIGNED_INT_VEC2:
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case GL_BOOL_VEC2:
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return 2 * sizeof(GLfloat); // GL_BOOL_VEC2 is also 2 * 4 bytes
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case GL_DOUBLE_VEC2:
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return 2 * sizeof(GLdouble);
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// 3-component vec
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case GL_FLOAT_VEC3:
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case GL_INT_VEC3:
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case GL_UNSIGNED_INT_VEC3:
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case GL_BOOL_VEC3:
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return 3 * sizeof(GLfloat);
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case GL_DOUBLE_VEC3:
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return 3 * sizeof(GLdouble);
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// 4-component vec
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case GL_FLOAT_VEC4:
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case GL_INT_VEC4:
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case GL_UNSIGNED_INT_VEC4:
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case GL_BOOL_VEC4:
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return 4 * sizeof(GLfloat);
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case GL_DOUBLE_VEC4:
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return 4 * sizeof(GLdouble);
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// ---- Matrix Types ----
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// Double non-square
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case GL_FLOAT_MAT2:
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return 2 * 2 * sizeof(GLfloat);
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case GL_FLOAT_MAT3:
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return 3 * 3 * sizeof(GLfloat);
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case GL_FLOAT_MAT4:
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return 4 * 4 * sizeof(GLfloat);
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// Float non-square
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case GL_FLOAT_MAT2x3:
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return 2 * 3 * sizeof(GLfloat);
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case GL_FLOAT_MAT2x4:
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return 2 * 4 * sizeof(GLfloat);
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case GL_FLOAT_MAT3x2:
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return 3 * 2 * sizeof(GLfloat);
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case GL_FLOAT_MAT3x4:
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return 3 * 4 * sizeof(GLfloat);
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case GL_FLOAT_MAT4x2:
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return 4 * 2 * sizeof(GLfloat);
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case GL_FLOAT_MAT4x3:
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return 4 * 3 * sizeof(GLfloat);
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// Double mat
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case GL_DOUBLE_MAT2:
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return 2 * 2 * sizeof(GLdouble);
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case GL_DOUBLE_MAT3:
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return 3 * 3 * sizeof(GLdouble);
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case GL_DOUBLE_MAT4:
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return 4 * 4 * sizeof(GLdouble);
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// Double non-square
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case GL_DOUBLE_MAT2x3:
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return 2 * 3 * sizeof(GLdouble);
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case GL_DOUBLE_MAT2x4:
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return 2 * 4 * sizeof(GLdouble);
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case GL_DOUBLE_MAT3x2:
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return 3 * 2 * sizeof(GLdouble);
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case GL_DOUBLE_MAT3x4:
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return 3 * 4 * sizeof(GLdouble);
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case GL_DOUBLE_MAT4x2:
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return 4 * 2 * sizeof(GLdouble);
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case GL_DOUBLE_MAT4x3:
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return 4 * 3 * sizeof(GLdouble);
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default:
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return -1;
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}
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}
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} // namespace MG_Util
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} // namespace MobileGL
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