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95 lines
2 KiB
C++
95 lines
2 KiB
C++
#include "Common/GPU/OpenGL/DataFormatGL.h"
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#include "Common/GPU/OpenGL/GLFeatures.h"
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#include "Common/Log.h"
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namespace Draw {
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// TODO: Also output storage format (GL_RGBA8 etc) for modern GL usage.
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bool Thin3DFormatToGLFormatAndType(DataFormat fmt, GLuint &internalFormat, GLuint &format, GLuint &type, int &alignment) {
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alignment = 4;
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switch (fmt) {
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case DataFormat::R16_UNORM:
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internalFormat = GL_RGBA;
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format = GL_RED;
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type = GL_UNSIGNED_SHORT;
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alignment = 2;
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break;
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case DataFormat::R8_UNORM:
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if (gl_extensions.IsGLES) {
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internalFormat = GL_LUMINANCE;
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format = GL_LUMINANCE;
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} else if (gl_extensions.VersionGEThan(3, 0)) {
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internalFormat = GL_RED;
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format = GL_RED;
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} else {
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internalFormat = GL_RGBA;
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format = GL_RED;
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}
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type = GL_UNSIGNED_BYTE;
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alignment = 1;
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break;
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case DataFormat::R8G8B8A8_UNORM:
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internalFormat = GL_RGBA;
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format = GL_RGBA;
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type = GL_UNSIGNED_BYTE;
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break;
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case DataFormat::D32F:
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internalFormat = GL_DEPTH_COMPONENT;
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format = GL_DEPTH_COMPONENT;
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type = GL_FLOAT;
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break;
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#ifndef USING_GLES2
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case DataFormat::S8:
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internalFormat = GL_STENCIL_INDEX;
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format = GL_STENCIL_INDEX;
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type = GL_UNSIGNED_BYTE;
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alignment = 1;
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break;
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#endif
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case DataFormat::R8G8B8_UNORM:
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internalFormat = GL_RGB;
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format = GL_RGB;
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type = GL_UNSIGNED_BYTE;
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alignment = 1;
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break;
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case DataFormat::R4G4B4A4_UNORM_PACK16:
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internalFormat = GL_RGBA;
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format = GL_RGBA;
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type = GL_UNSIGNED_SHORT_4_4_4_4;
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alignment = 2;
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break;
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case DataFormat::R5G6B5_UNORM_PACK16:
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internalFormat = GL_RGB;
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format = GL_RGB;
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type = GL_UNSIGNED_SHORT_5_6_5;
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alignment = 2;
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break;
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case DataFormat::R5G5B5A1_UNORM_PACK16:
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internalFormat = GL_RGBA;
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format = GL_RGBA;
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type = GL_UNSIGNED_SHORT_5_5_5_1;
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alignment = 2;
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break;
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case DataFormat::R32G32B32A32_FLOAT:
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internalFormat = GL_RGBA32F;
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format = GL_RGBA;
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type = GL_FLOAT;
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alignment = 16;
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break;
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default:
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return false;
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}
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return true;
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}
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}
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