bool initTextureArray()
{
GLint MaxTextureArrayLayers(0);
glGetIntegerv(GL_MAX_ARRAY_TEXTURE_LAYERS, &MaxTextureArrayLayers);
glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
glGenTextures(1, &Texture2DArrayName);
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D_ARRAY, Texture2DArrayName);
// Set image
gli::texture2DArray Texture(gli::loadStorageDDS(glf::DATA_DIRECTORY + TEXTURE_DIFFUSE));
glTexStorage3D(
GL_TEXTURE_2D_ARRAY,
GLsizei(Texture.levels()),
gli::internal_format(Texture.format()),
GLsizei(Texture.dimensions().x),
GLsizei(Texture.dimensions().y),
GLsizei(Texture.layers())); //depth
for(gli::texture2DArray::size_type Array = 0; Array < Texture.layers(); ++Array)
for(gli::texture2DArray::size_type Level = 0; Level < Texture.levels(); ++Level)
{
glTexSubImage3D(
GL_TEXTURE_2D_ARRAY,
GLint(Level),
0, // offset x
0, // offset y
GLint(Array), // offset z
GLsizei(Texture[Array][Level].dimensions().x),
GLsizei(Texture[Array][Level].dimensions().y),
GLsizei(1), //depth
gli::external_format(Texture.format()),
gli::type_format(Texture.format()),
Texture[Array][Level].data());
}
glPixelStorei(GL_UNPACK_ALIGNMENT, 4);
return glf::checkError("initTextureArray");
}
bool initTexture()
{
GLint MaxTextureArrayLayers(0);
glGetIntegerv(GL_MAX_ARRAY_TEXTURE_LAYERS, &MaxTextureArrayLayers);
glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
glGenTextures(1, &TextureName);
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D_ARRAY, TextureName);
gli::texture2DArray Texture(gli::FORMAT_RGBA8_UNORM_PACK8, gli::texture2DArray::texelcoord_type(4), 15, 1);
for(gli::size_t LayerIndex = 0, LayerCount = Texture.layers(); LayerIndex < LayerCount; ++LayerIndex)
{
float const Progress = static_cast<float>(LayerIndex) / static_cast<float>(LayerCount);
glm::u8vec4 const Color(glm::vec4(Progress, 0.5f + Progress * 0.5f, 1.f - Progress, 1.f) * 255.f);
Texture[LayerIndex].clear<glm::u8vec4>(Color);
}
gli::gl GL;
gli::gl::format const Format = GL.translate(Texture.format());
glTexStorage3D(GL_TEXTURE_2D_ARRAY, GLsizei(Texture.levels()),
Format.Internal,
GLsizei(Texture.dimensions().x), GLsizei(Texture.dimensions().y), GLsizei(Texture.layers()));
for(gli::texture2DArray::size_type Array = 0; Array < Texture.layers(); ++Array)
for(gli::texture2DArray::size_type Level = 0; Level < Texture.levels(); ++Level)
{
glTexSubImage3D(GL_TEXTURE_2D_ARRAY, GLint(Level),
0, 0, GLint(Array),
GLsizei(Texture[Array][Level].dimensions().x), GLsizei(Texture[Array][Level].dimensions().y), GLsizei(1),
Format.External, Format.Type,
Texture[Array][Level].data());
}
glPixelStorei(GL_UNPACK_ALIGNMENT, 4);
return true;
}