mirror of
https://github.com/g-truc/glm.git
synced 2024-11-14 06:04:34 +00:00
211 lines
11 KiB
C++
211 lines
11 KiB
C++
///////////////////////////////////////////////////////////////////////////////////////////////////
|
|
// OpenGL Image Copyright (c) 2008 - 2011 G-Truc Creation (www.g-truc.net)
|
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
|
// Created : 2010-09-27
|
|
// Updated : 2010-10-01
|
|
// Licence : This source is under MIT License
|
|
// File : gli/gtx/gl_texture2d.inl
|
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
|
|
|
namespace gli{
|
|
namespace gtx{
|
|
namespace gl_texture2d{
|
|
namespace detail
|
|
{
|
|
//GL_COMPRESSED_RED, GL_COMPRESSED_RG, GL_COMPRESSED_RGB, GL_COMPRESSED_RGBA, GL_COMPRESSED_SRGB, GL_COMPRESSED_SRGB_ALPHA,
|
|
//GL_SRGB, GL_SRGB8, GL_SRGB_ALPHA, or GL_SRGB8_ALPHA8
|
|
struct texture_desc
|
|
{
|
|
GLint InternalFormat;
|
|
GLint InternalFormatCompressed;
|
|
GLint InternalFormatSRGB;
|
|
GLint InternalFormatCompressedSRGB;
|
|
GLenum ExternalFormat;
|
|
GLenum ExternalFormatRev;
|
|
GLenum Type;
|
|
};
|
|
|
|
//GL_RED, GL_RG, GL_RGB, GL_BGR, GL_RGBA, and GL_BGRA.
|
|
//GL_UNSIGNED_BYTE, GL_BYTE, GL_UNSIGNED_SHORT, GL_SHORT, GL_UNSIGNED_INT,
|
|
//GL_INT, GL_FLOAT, GL_UNSIGNED_BYTE_3_3_2, GL_UNSIGNED_BYTE_2_3_3_REV,
|
|
//GL_UNSIGNED_SHORT_5_6_5, GL_UNSIGNED_SHORT_5_6_5_REV, GL_UNSIGNED_SHORT_4_4_4_4,
|
|
//GL_UNSIGNED_SHORT_4_4_4_4_REV, GL_UNSIGNED_SHORT_5_5_5_1, GL_UNSIGNED_SHORT_1_5_5_5_REV,
|
|
//GL_UNSIGNED_INT_8_8_8_8, GL_UNSIGNED_INT_8_8_8_8_REV, GL_UNSIGNED_INT_10_10_10_2,
|
|
//GL_UNSIGNED_INT_2_10_10_10_REV
|
|
|
|
# ifndef GL_COMPRESSED_RGBA_BPTC_UNORM_ARB
|
|
# define GL_COMPRESSED_RGBA_BPTC_UNORM_ARB 0x8E8C
|
|
# endif
|
|
|
|
# ifndef GL_COMPRESSED_SRGB_ALPHA_BPTC_UNORM_ARB
|
|
# define GL_COMPRESSED_SRGB_ALPHA_BPTC_UNORM_ARB 0x8E8D
|
|
# endif
|
|
|
|
# ifndef GL_COMPRESSED_RGB_BPTC_SIGNED_FLOAT_ARB
|
|
# define GL_COMPRESSED_RGB_BPTC_SIGNED_FLOAT_ARB 0x8E8E
|
|
# endif
|
|
|
|
# ifndef GL_COMPRESSED_RGB_BPTC_UNSIGNED_FLOAT_ARB
|
|
# define GL_COMPRESSED_RGB_BPTC_UNSIGNED_FLOAT_ARB 0x8E8F
|
|
# endif
|
|
|
|
inline texture_desc gli2ogl_cast(format const & Format)
|
|
{
|
|
texture_desc Cast[] =
|
|
{
|
|
{GL_NONE, GL_NONE, GL_NONE, GL_NONE, GL_NONE, GL_NONE, GL_NONE},
|
|
|
|
//// Normalized
|
|
//{GL_RED, GL_COMPRESSED_RED, GL_RED, GL_COMPRESSED_RED, GL_RED, GL_RED, GL_UNSIGNED_BYTE},
|
|
//{GL_RG, GL_COMPRESSED_RG, GL_RG, GL_COMPRESSED_RG, GL_RG, GL_RG, GL_UNSIGNED_BYTE},
|
|
//{GL_RGB, GL_COMPRESSED_RGB, GL_SRGB8, GL_COMPRESSED_SRGB, GL_RGB, GL_BGR, GL_UNSIGNED_BYTE},
|
|
//{GL_RGBA, GL_COMPRESSED_RGBA, GL_SRGB8_ALPHA8, GL_COMPRESSED_SRGB_ALPHA, GL_RGBA, GL_BGRA, GL_UNSIGNED_BYTE},
|
|
|
|
//{GL_RED, GL_COMPRESSED_RED, GL_RED, GL_COMPRESSED_RED, GL_RED, GL_RED, GL_UNSIGNED_SHORT},
|
|
//{GL_RG, GL_COMPRESSED_RG, GL_RG, GL_COMPRESSED_RG, GL_RG, GL_RG, GL_UNSIGNED_SHORT},
|
|
//{GL_RGB, GL_COMPRESSED_RGB, GL_SRGB8, GL_COMPRESSED_SRGB, GL_RGB, GL_BGR, GL_UNSIGNED_SHORT},
|
|
//{GL_RGBA, GL_COMPRESSED_RGBA, GL_SRGB8_ALPHA8, GL_COMPRESSED_SRGB_ALPHA, GL_RGBA, GL_BGRA, GL_UNSIGNED_SHORT},
|
|
|
|
//{GL_RED, GL_COMPRESSED_RED, GL_RED, GL_COMPRESSED_RED, GL_RED, GL_RED, GL_UNSIGNED_INT},
|
|
//{GL_RG, GL_COMPRESSED_RG, GL_RG, GL_COMPRESSED_RG, GL_RG, GL_RG, GL_UNSIGNED_INT},
|
|
//{GL_RGB, GL_COMPRESSED_RGB, GL_SRGB8, GL_COMPRESSED_SRGB, GL_RGB, GL_BGR, GL_UNSIGNED_INT},
|
|
//{GL_RGBA, GL_COMPRESSED_RGBA, GL_SRGB8_ALPHA8, GL_COMPRESSED_SRGB_ALPHA, GL_RGBA, GL_BGRA, GL_UNSIGNED_INT},
|
|
|
|
// Unsigned
|
|
{GL_RED, GL_COMPRESSED_RED, GL_RED, GL_COMPRESSED_RED, GL_RED, GL_RED, GL_UNSIGNED_BYTE},
|
|
{GL_RG, GL_COMPRESSED_RG, GL_RG, GL_COMPRESSED_RG, GL_RG, GL_RG, GL_UNSIGNED_BYTE},
|
|
{GL_RGB, GL_COMPRESSED_RGB, GL_SRGB8, GL_COMPRESSED_SRGB, GL_RGB, GL_BGR, GL_UNSIGNED_BYTE},
|
|
{GL_RGBA, GL_COMPRESSED_RGBA, GL_SRGB8_ALPHA8, GL_COMPRESSED_SRGB_ALPHA, GL_RGBA, GL_BGRA, GL_UNSIGNED_BYTE},
|
|
|
|
{GL_RED, GL_COMPRESSED_RED, GL_RED, GL_COMPRESSED_RED, GL_RED, GL_RED, GL_UNSIGNED_SHORT},
|
|
{GL_RG, GL_COMPRESSED_RG, GL_RG, GL_COMPRESSED_RG, GL_RG, GL_RG, GL_UNSIGNED_SHORT},
|
|
{GL_RGB, GL_COMPRESSED_RGB, GL_SRGB8, GL_COMPRESSED_SRGB, GL_RGB, GL_BGR, GL_UNSIGNED_SHORT},
|
|
{GL_RGBA, GL_COMPRESSED_RGBA, GL_SRGB8_ALPHA8, GL_COMPRESSED_SRGB_ALPHA, GL_RGBA, GL_BGRA, GL_UNSIGNED_SHORT},
|
|
|
|
{GL_RED, GL_COMPRESSED_RED, GL_RED, GL_COMPRESSED_RED, GL_RED, GL_RED, GL_UNSIGNED_INT},
|
|
{GL_RG, GL_COMPRESSED_RG, GL_RG, GL_COMPRESSED_RG, GL_RG, GL_RG, GL_UNSIGNED_INT},
|
|
{GL_RGB, GL_COMPRESSED_RGB, GL_SRGB8, GL_COMPRESSED_SRGB, GL_RGB, GL_BGR, GL_UNSIGNED_INT},
|
|
{GL_RGBA, GL_COMPRESSED_RGBA, GL_SRGB8_ALPHA8, GL_COMPRESSED_SRGB_ALPHA, GL_RGBA, GL_BGRA, GL_UNSIGNED_INT},
|
|
|
|
// Signed
|
|
{GL_RED, GL_COMPRESSED_RED, GL_RED, GL_COMPRESSED_RED, GL_RED, GL_RED, GL_BYTE},
|
|
{GL_RG, GL_COMPRESSED_RG, GL_RG, GL_COMPRESSED_RG, GL_RG, GL_RG, GL_BYTE},
|
|
{GL_RGB, GL_COMPRESSED_RGB, GL_SRGB8, GL_COMPRESSED_SRGB, GL_RGB, GL_BGR, GL_BYTE},
|
|
{GL_RGBA, GL_COMPRESSED_RGBA, GL_SRGB8_ALPHA8, GL_COMPRESSED_SRGB_ALPHA, GL_RGBA, GL_BGRA, GL_BYTE},
|
|
|
|
{GL_RED, GL_COMPRESSED_RED, GL_RED, GL_COMPRESSED_RED, GL_RED, GL_RED, GL_SHORT},
|
|
{GL_RG, GL_COMPRESSED_RG, GL_RG, GL_COMPRESSED_RG, GL_RG, GL_RG, GL_SHORT},
|
|
{GL_RGB, GL_COMPRESSED_RGB, GL_SRGB8, GL_COMPRESSED_SRGB, GL_RGB, GL_BGR, GL_SHORT},
|
|
{GL_RGBA, GL_COMPRESSED_RGBA, GL_SRGB8_ALPHA8, GL_COMPRESSED_SRGB_ALPHA, GL_RGBA, GL_BGRA, GL_SHORT},
|
|
|
|
{GL_RED, GL_COMPRESSED_RED, GL_RED, GL_COMPRESSED_RED, GL_RED, GL_RED, GL_INT},
|
|
{GL_RG, GL_COMPRESSED_RG, GL_RG, GL_COMPRESSED_RG, GL_RG, GL_RG, GL_INT},
|
|
{GL_RGB, GL_COMPRESSED_RGB, GL_SRGB8, GL_COMPRESSED_SRGB, GL_RGB, GL_BGR, GL_INT},
|
|
{GL_RGBA, GL_COMPRESSED_RGBA, GL_SRGB8_ALPHA8, GL_COMPRESSED_SRGB_ALPHA, GL_RGBA, GL_BGRA, GL_INT},
|
|
|
|
// Float
|
|
{GL_RED, GL_COMPRESSED_RED, GL_RED, GL_COMPRESSED_RED, GL_RED, GL_RED, GL_HALF_FLOAT},
|
|
{GL_RG, GL_COMPRESSED_RG, GL_RG, GL_COMPRESSED_RG, GL_RG, GL_RG, GL_HALF_FLOAT},
|
|
{GL_RGB, GL_COMPRESSED_RGB, GL_SRGB8, GL_COMPRESSED_SRGB, GL_RGB, GL_BGR, GL_HALF_FLOAT},
|
|
{GL_RGBA, GL_COMPRESSED_RGBA, GL_SRGB8_ALPHA8, GL_COMPRESSED_SRGB_ALPHA, GL_RGBA, GL_BGRA, GL_HALF_FLOAT},
|
|
|
|
{GL_RED, GL_COMPRESSED_RED, GL_RED, GL_COMPRESSED_RED, GL_RED, GL_RED, GL_FLOAT},
|
|
{GL_RG, GL_COMPRESSED_RG, GL_RG, GL_COMPRESSED_RG, GL_RG, GL_RG, GL_FLOAT},
|
|
{GL_RGB, GL_COMPRESSED_RGB, GL_SRGB8, GL_COMPRESSED_SRGB, GL_RGB, GL_BGR, GL_FLOAT},
|
|
{GL_RGBA, GL_COMPRESSED_RGBA, GL_SRGB8_ALPHA8, GL_COMPRESSED_SRGB_ALPHA, GL_RGBA, GL_BGRA, GL_FLOAT},
|
|
|
|
// Packed
|
|
{GL_RED, GL_COMPRESSED_RED, GL_RED, GL_COMPRESSED_RED, GL_RED, GL_RED, GL_HALF_FLOAT},
|
|
{GL_RGB9_E5, GL_RGB9_E5, GL_RED, GL_COMPRESSED_RED, GL_RED, GL_RED, GL_HALF_FLOAT},
|
|
{GL_R11F_G11F_B10F, GL_R11F_G11F_B10F, GL_RED, GL_COMPRESSED_RED, GL_RED, GL_RED, GL_HALF_FLOAT},
|
|
{GL_RED, GL_COMPRESSED_RED, GL_RED, GL_COMPRESSED_RED, GL_RED, GL_RED, GL_HALF_FLOAT},
|
|
{GL_RGBA4, GL_RGBA4, GL_RED, GL_COMPRESSED_RED, GL_RED, GL_RED, GL_HALF_FLOAT},
|
|
{GL_RGB10_A2, GL_RGB10_A2, GL_RED, GL_COMPRESSED_RED, GL_RED, GL_RED, GL_HALF_FLOAT},
|
|
|
|
// Depth
|
|
{GL_DEPTH_COMPONENT16, GL_DEPTH_COMPONENT16, GL_DEPTH_COMPONENT16, GL_DEPTH_COMPONENT16, GL_DEPTH_COMPONENT, GL_DEPTH_COMPONENT, GL_UNSIGNED_SHORT},
|
|
{GL_DEPTH_COMPONENT24, GL_DEPTH_COMPONENT24, GL_DEPTH_COMPONENT24, GL_DEPTH_COMPONENT24, GL_DEPTH_COMPONENT, GL_DEPTH_COMPONENT, GL_UNSIGNED_INT},
|
|
{GL_DEPTH24_STENCIL8, GL_DEPTH24_STENCIL8, GL_DEPTH24_STENCIL8, GL_DEPTH24_STENCIL8, GL_DEPTH_COMPONENT, GL_DEPTH_STENCIL, GL_UNSIGNED_INT},
|
|
{GL_DEPTH_COMPONENT32F, GL_DEPTH_COMPONENT32F, GL_DEPTH_COMPONENT32F, GL_DEPTH_COMPONENT32F, GL_DEPTH_COMPONENT, GL_DEPTH_COMPONENT, GL_FLOAT},
|
|
{GL_DEPTH32F_STENCIL8, GL_DEPTH32F_STENCIL8, GL_DEPTH32F_STENCIL8, GL_DEPTH32F_STENCIL8, GL_DEPTH_COMPONENT, GL_DEPTH_STENCIL, GL_UNSIGNED_INT},
|
|
|
|
// Compressed formats
|
|
{GL_COMPRESSED_RGBA_S3TC_DXT1_EXT, GL_COMPRESSED_RGBA_S3TC_DXT1_EXT, GL_COMPRESSED_RGBA_S3TC_DXT1_EXT, GL_COMPRESSED_RGBA_S3TC_DXT1_EXT, GL_NONE, GL_NONE, GL_NONE},
|
|
{GL_COMPRESSED_RGBA_S3TC_DXT3_EXT, GL_COMPRESSED_RGBA_S3TC_DXT3_EXT, GL_COMPRESSED_RGBA_S3TC_DXT3_EXT, GL_COMPRESSED_RGBA_S3TC_DXT3_EXT, GL_NONE, GL_NONE, GL_NONE},
|
|
{GL_COMPRESSED_RGBA_S3TC_DXT5_EXT, GL_COMPRESSED_RGBA_S3TC_DXT5_EXT, GL_COMPRESSED_RGBA_S3TC_DXT5_EXT, GL_COMPRESSED_RGBA_S3TC_DXT5_EXT, GL_NONE, GL_NONE, GL_NONE},
|
|
{GL_COMPRESSED_RED_RGTC1, GL_COMPRESSED_RED_RGTC1, GL_COMPRESSED_RED_RGTC1, GL_COMPRESSED_RED_RGTC1, GL_NONE, GL_NONE, GL_NONE},
|
|
{GL_COMPRESSED_SIGNED_RED_RGTC1, GL_COMPRESSED_SIGNED_RED_RGTC1, GL_COMPRESSED_SIGNED_RED_RGTC1, GL_COMPRESSED_SIGNED_RED_RGTC1, GL_NONE, GL_NONE, GL_NONE},
|
|
{GL_COMPRESSED_RG_RGTC2, GL_COMPRESSED_RG_RGTC2, GL_COMPRESSED_RG_RGTC2, GL_COMPRESSED_RG_RGTC2, GL_NONE, GL_NONE, GL_NONE},
|
|
{GL_COMPRESSED_SIGNED_RG_RGTC2, GL_COMPRESSED_SIGNED_RG_RGTC2, GL_COMPRESSED_SIGNED_RG_RGTC2, GL_COMPRESSED_SIGNED_RG_RGTC2, GL_NONE, GL_NONE, GL_NONE},
|
|
{GL_COMPRESSED_RGB_BPTC_UNSIGNED_FLOAT_ARB, GL_COMPRESSED_RGB_BPTC_UNSIGNED_FLOAT_ARB, GL_COMPRESSED_RGB_BPTC_UNSIGNED_FLOAT_ARB, GL_COMPRESSED_RGB_BPTC_UNSIGNED_FLOAT_ARB, GL_NONE, GL_NONE, GL_NONE},
|
|
{GL_COMPRESSED_RGB_BPTC_SIGNED_FLOAT_ARB, GL_COMPRESSED_RGB_BPTC_SIGNED_FLOAT_ARB, GL_COMPRESSED_RGB_BPTC_SIGNED_FLOAT_ARB, GL_COMPRESSED_RGB_BPTC_SIGNED_FLOAT_ARB, GL_NONE, GL_NONE, GL_NONE},
|
|
{GL_COMPRESSED_RGBA_BPTC_UNORM_ARB, GL_COMPRESSED_RGBA_BPTC_UNORM_ARB, GL_COMPRESSED_SRGB_ALPHA_BPTC_UNORM_ARB, GL_COMPRESSED_SRGB_ALPHA_BPTC_UNORM_ARB, GL_NONE, GL_NONE, GL_NONE},
|
|
};
|
|
|
|
return Cast[Format];
|
|
}
|
|
|
|
}//namespace detail
|
|
|
|
inline GLuint createTexture2D(std::string const & Filename)
|
|
{
|
|
gli::texture2D Texture = gli::load(Filename);
|
|
if(Texture.empty())
|
|
return 0;
|
|
|
|
detail::texture_desc TextureDesc = detail::gli2ogl_cast(Texture.format());
|
|
|
|
GLint Alignment = 0;
|
|
glGetIntegerv(GL_UNPACK_ALIGNMENT, &Alignment);
|
|
|
|
glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
|
|
|
|
GLuint Name = 0;
|
|
glGenTextures(1, &Name);
|
|
glBindTexture(GL_TEXTURE_2D, Name);
|
|
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, Texture.levels() > 1 ? GL_NEAREST_MIPMAP_NEAREST : GL_NEAREST);
|
|
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
|
|
|
|
if(size(Texture, BIT_PER_PIXEL) == size(Texture, BLOCK_SIZE) << 3)
|
|
{
|
|
for(gli::texture2D::level_type Level = 0; Level < Texture.levels(); ++Level)
|
|
{
|
|
glTexImage2D(
|
|
GL_TEXTURE_2D,
|
|
GLint(Level),
|
|
TextureDesc.InternalFormat,
|
|
GLsizei(Texture[Level].dimensions().x),
|
|
GLsizei(Texture[Level].dimensions().y),
|
|
0,
|
|
TextureDesc.ExternalFormatRev,
|
|
TextureDesc.Type,
|
|
Texture[Level].data());
|
|
}
|
|
}
|
|
else
|
|
{
|
|
for(gli::texture2D::level_type Level = 0; Level < Texture.levels(); ++Level)
|
|
{
|
|
glCompressedTexImage2D(
|
|
GL_TEXTURE_2D,
|
|
GLint(Level),
|
|
TextureDesc.InternalFormat,
|
|
GLsizei(Texture[Level].dimensions().x),
|
|
GLsizei(Texture[Level].dimensions().y),
|
|
0,
|
|
GLsizei(Texture[Level].capacity()),
|
|
Texture[Level].data());
|
|
}
|
|
}
|
|
|
|
glBindTexture(GL_TEXTURE_2D, 0);
|
|
|
|
glPixelStorei(GL_UNPACK_ALIGNMENT, Alignment);
|
|
|
|
return Name;
|
|
}
|
|
|
|
}//namespace gl_texture_2d
|
|
}//namespace gtx
|
|
}//namespace gli
|