OGLESTexture::OGLESTexture(TextureType type, uint32_t array_size, uint32_t sample_count, uint32_t sample_quality, uint32_t access_hint)
: Texture(type, sample_count, sample_quality, access_hint),
hw_res_ready_(false)
{
array_size_ = array_size;
if ((array_size > 1) && !glloader_GLES_VERSION_3_0())
{
THR(errc::function_not_supported);
}
switch (type_)
{
case TT_1D:
case TT_2D:
if (array_size > 1)
{
target_type_ = GL_TEXTURE_2D_ARRAY;
}
else
{
target_type_ = GL_TEXTURE_2D;
}
break;
case TT_3D:
if (!glloader_GLES_VERSION_3_0() && !glloader_GLES_OES_texture_3D())
{
THR(errc::function_not_supported);
}
if (glloader_GLES_VERSION_3_0())
{
target_type_ = GL_TEXTURE_3D;
}
else
{
target_type_ = GL_TEXTURE_3D_OES;
}
break;
case TT_Cube:
target_type_ = GL_TEXTURE_CUBE_MAP;
break;
default:
BOOST_ASSERT(false);
target_type_ = GL_TEXTURE_2D;
break;
}
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);
}
OGLESTexture::OGLESTexture(TextureType type, uint32_t array_size, uint32_t sample_count, uint32_t sample_quality, uint32_t access_hint)
: Texture(type, sample_count, sample_quality, access_hint)
{
if (array_size > 1)
{
THR(errc::function_not_supported);
}
switch (type_)
{
case TT_1D:
case TT_2D:
target_type_ = GL_TEXTURE_2D;
break;
case TT_3D:
if (!glloader_GLES_VERSION_3_0() && !glloader_GLES_OES_texture_3D())
{
THR(errc::function_not_supported);
}
if (glloader_GLES_VERSION_3_0())
{
target_type_ = GL_TEXTURE_3D;
}
else
{
target_type_ = GL_TEXTURE_3D_OES;
}
break;
case TT_Cube:
target_type_ = GL_TEXTURE_CUBE_MAP;
break;
default:
BOOST_ASSERT(false);
target_type_ = GL_TEXTURE_2D;
break;
}
}
OGLESTexture3D::OGLESTexture3D(uint32_t width, uint32_t height, uint32_t depth, uint32_t numMipMaps, uint32_t array_size, ElementFormat format,
uint32_t sample_count, uint32_t sample_quality, uint32_t access_hint)
: OGLESTexture(TT_3D, array_size, sample_count, sample_quality, access_hint)
{
if (!glloader_GLES_VERSION_3_0() && !glloader_GLES_OES_texture_3D())
{
THR(errc::function_not_supported);
}
if (IsSRGB(format))
{
format = this->SRGBToRGB(format);
}
format_ = format;
if (0 == numMipMaps)
{
num_mip_maps_ = 1;
uint32_t w = width;
uint32_t h = height;
uint32_t d = depth;
while ((w > 1) && (h > 1) && (d > 1))
{
++ num_mip_maps_;
w = std::max<uint32_t>(1U, w / 2);
h = std::max<uint32_t>(1U, h / 2);
d = std::max<uint32_t>(1U, d / 2);
}
}
else
{
num_mip_maps_ = numMipMaps;
}
array_size_ = 1;
width_ = width;
height_ = height;
depth_ = depth;
tex_data_.resize(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);
}
}
}