OGLESTexture2D::OGLESTexture2D(uint32_t width, uint32_t height, uint32_t numMipMaps, uint32_t array_size, ElementFormat format,
uint32_t sample_count, uint32_t sample_quality, uint32_t access_hint)
: OGLESTexture(TT_2D, array_size, sample_count, sample_quality, access_hint)
{
if (IsSRGB(format))
{
format = this->SRGBToRGB(format);
}
format_ = format;
if (0 == numMipMaps)
{
num_mip_maps_ = 1;
uint32_t w = width;
uint32_t h = height;
while ((w != 1) || (h != 1))
{
++ num_mip_maps_;
w = std::max<uint32_t>(1U, w / 2);
h = std::max<uint32_t>(1U, h / 2);
}
}
else
{
num_mip_maps_ = numMipMaps;
}
width_ = width;
height_ = height;
tex_data_.resize(array_size_ * num_mip_maps_);
glBindTexture(target_type_, texture_);
if (glloader_GLES_VERSION_3_0())
{
glTexParameteri(target_type_, GL_TEXTURE_BASE_LEVEL, 0);
glTexParameteri(target_type_, GL_TEXTURE_MAX_LEVEL, num_mip_maps_ - 1);
}
else if (glloader_GLES_APPLE_texture_max_level())
{
glTexParameteri(target_type_, GL_TEXTURE_MAX_LEVEL_APPLE, num_mip_maps_ - 1);
}
else
{
OGLESRenderEngine& re = *checked_cast<OGLESRenderEngine*>(&Context::Instance().RenderFactoryInstance().RenderEngineInstance());
if (re.HackForTegra())
{
glTexParameteri(target_type_, GL_TEXTURE_MAX_LEVEL, num_mip_maps_ - 1);
}
}
}
OGLESTextureCube::OGLESTextureCube(uint32_t size, uint32_t numMipMaps, uint32_t array_size, ElementFormat format,
uint32_t sample_count, uint32_t sample_quality, uint32_t access_hint, ElementInitData const * init_data)
: OGLESTexture(TT_Cube, array_size, sample_count, sample_quality, access_hint)
{
if (IsSRGB(format))
{
format = this->SRGBToRGB(format);
}
format_ = format;
if (0 == numMipMaps)
{
num_mip_maps_ = 1;
uint32_t s = size;
while (s > 1)
{
++ num_mip_maps_;
s = std::max<uint32_t>(1U, s / 2);
}
}
else
{
num_mip_maps_ = numMipMaps;
}
array_size_ = 1;
uint32_t texel_size = NumFormatBytes(format_);
GLint glinternalFormat;
GLenum glformat;
GLenum gltype;
OGLESMapping::MappingFormat(glinternalFormat, glformat, gltype, format_);
glGenTextures(1, &texture_);
glBindTexture(target_type_, texture_);
glTexParameteri(target_type_, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexParameteri(target_type_, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
if (glloader_GLES_VERSION_3_0())
{
glTexParameteri(target_type_, GL_TEXTURE_BASE_LEVEL, 0);
glTexParameteri(target_type_, GL_TEXTURE_MAX_LEVEL, num_mip_maps_ - 1);
}
else
if (glloader_GLES_APPLE_texture_max_level())
{
glTexParameteri(target_type_, GL_TEXTURE_MAX_LEVEL_APPLE, num_mip_maps_ - 1);
}
tex_data_.resize(6 * num_mip_maps_);
widths_.resize(6 * num_mip_maps_);
for (int face = 0; face < 6; ++ face)
{
uint32_t s = size;
for (uint32_t level = 0; level < num_mip_maps_; ++ level)
{
widths_[face * num_mip_maps_ + level] = s;
if (IsCompressedFormat(format_))
{
int block_size;
if ((EF_BC1 == format_) || (EF_SIGNED_BC1 == format_) || (EF_BC1_SRGB == format_)
|| (EF_BC4 == format_) || (EF_SIGNED_BC4 == format_) || (EF_BC4_SRGB == format_))
{
block_size = 8;
}
else
{
block_size = 16;
}
GLsizei const image_size = ((s + 3) / 4) * ((s + 3) / 4) * block_size;
if (nullptr == init_data)
{
tex_data_[face * num_mip_maps_ + level].resize(image_size, 0);
}
else
{
tex_data_[face * num_mip_maps_ + level].resize(image_size);
std::memcpy(&tex_data_[face * num_mip_maps_ + level][0], init_data[face * num_mip_maps_ + level].data, image_size);
}
glCompressedTexImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_X + face, level, glinternalFormat,
s, s, 0, image_size, &tex_data_[face * num_mip_maps_ + level][0]);
}
else
{
GLsizei const image_size = s * s * texel_size;
if (nullptr == init_data)
{
tex_data_[face * num_mip_maps_ + level].resize(image_size, 0);
}
else
{
tex_data_[face * num_mip_maps_ + level].resize(image_size);
std::memcpy(&tex_data_[face * num_mip_maps_ + level][0], init_data[face * num_mip_maps_ + level].data, image_size);
}
glTexImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_X + face, level, glinternalFormat,
s, s, 0, glformat, gltype, &tex_data_[face * num_mip_maps_ + level][0]);
}
s = std::max(1U, s / 2);
}
}
}
