// Check for GL_ANGLE_texture_compression_dxt5
static bool DetermineSRGBTextureSupport(const TextureCapsMap &textureCaps)
{
std::vector<GLenum> requiredFilterFormats;
requiredFilterFormats.push_back(GL_SRGB8);
requiredFilterFormats.push_back(GL_SRGB8_ALPHA8);
std::vector<GLenum> requiredRenderFormats;
requiredRenderFormats.push_back(GL_SRGB8_ALPHA8);
return GetFormatSupport(textureCaps, requiredFilterFormats, true, true, false) &&
GetFormatSupport(textureCaps, requiredRenderFormats, true, false, true);
}
// Checks for GL_EXT_texture_format_BGRA8888 support
static bool DetermineBGRA8TextureSupport(const TextureCapsMap &textureCaps)
{
std::vector<GLenum> requiredFormats;
requiredFormats.push_back(GL_BGRA8_EXT);
return GetFormatSupport(textureCaps, requiredFormats, true, true, true);
}
// Check for GL_ANGLE_texture_compression_dxt5
static bool DetermineDXT5TextureSupport(const TextureCapsMap &textureCaps)
{
std::vector<GLenum> requiredFormats;
requiredFormats.push_back(GL_COMPRESSED_RGBA_S3TC_DXT5_ANGLE);
return GetFormatSupport(textureCaps, requiredFormats, true, true, false);
}
// Check for GL_OES_depth32
static bool DetermineDepth32Support(const TextureCapsMap &textureCaps)
{
std::vector<GLenum> requiredFormats;
requiredFormats.push_back(GL_DEPTH_COMPONENT32_OES);
return GetFormatSupport(textureCaps, requiredFormats, false, false, true);
}
// Check for GL_ETC1_RGB8_OES
static bool DetermineETC1RGB8TextureSupport(const TextureCapsMap &textureCaps)
{
std::vector<GLenum> requiredFormats;
requiredFormats.push_back(GL_ETC1_RGB8_OES);
return GetFormatSupport(textureCaps, requiredFormats, true, true, false);
}
// Check for GL_KHR_texture_compression_astc_hdr and GL_KHR_texture_compression_astc_ldr
static bool DetermineASTCTextureSupport(const TextureCapsMap &textureCaps)
{
std::vector<GLenum> requiredFormats;
requiredFormats.push_back(GL_COMPRESSED_RGBA_ASTC_4x4_KHR);
requiredFormats.push_back(GL_COMPRESSED_RGBA_ASTC_5x4_KHR);
requiredFormats.push_back(GL_COMPRESSED_RGBA_ASTC_5x5_KHR);
requiredFormats.push_back(GL_COMPRESSED_RGBA_ASTC_6x5_KHR);
requiredFormats.push_back(GL_COMPRESSED_RGBA_ASTC_6x6_KHR);
requiredFormats.push_back(GL_COMPRESSED_RGBA_ASTC_8x5_KHR);
requiredFormats.push_back(GL_COMPRESSED_RGBA_ASTC_8x6_KHR);
requiredFormats.push_back(GL_COMPRESSED_RGBA_ASTC_8x8_KHR);
requiredFormats.push_back(GL_COMPRESSED_RGBA_ASTC_10x5_KHR);
requiredFormats.push_back(GL_COMPRESSED_RGBA_ASTC_10x6_KHR);
requiredFormats.push_back(GL_COMPRESSED_RGBA_ASTC_10x8_KHR);
requiredFormats.push_back(GL_COMPRESSED_RGBA_ASTC_10x10_KHR);
requiredFormats.push_back(GL_COMPRESSED_RGBA_ASTC_12x10_KHR);
requiredFormats.push_back(GL_COMPRESSED_RGBA_ASTC_12x12_KHR);
requiredFormats.push_back(GL_COMPRESSED_SRGB8_ALPHA8_ASTC_4x4_KHR);
requiredFormats.push_back(GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x4_KHR);
requiredFormats.push_back(GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x5_KHR);
requiredFormats.push_back(GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x5_KHR);
requiredFormats.push_back(GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x6_KHR);
requiredFormats.push_back(GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x5_KHR);
requiredFormats.push_back(GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x6_KHR);
requiredFormats.push_back(GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x8_KHR);
requiredFormats.push_back(GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x5_KHR);
requiredFormats.push_back(GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x6_KHR);
requiredFormats.push_back(GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x8_KHR);
requiredFormats.push_back(GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x10_KHR);
requiredFormats.push_back(GL_COMPRESSED_SRGB8_ALPHA8_ASTC_12x10_KHR);
requiredFormats.push_back(GL_COMPRESSED_SRGB8_ALPHA8_ASTC_12x12_KHR);
return GetFormatSupport(textureCaps, requiredFormats, true, true, false);
}
// Check for GL_OES_packed_depth_stencil
static bool DeterminePackedDepthStencilSupport(const TextureCapsMap &textureCaps)
{
std::vector<GLenum> requiredFormats;
requiredFormats.push_back(GL_DEPTH24_STENCIL8);
return GetFormatSupport(textureCaps, requiredFormats, false, false, true);
}
// Checks for GL_OES_texture_float_linear support
static bool DetermineFloatTextureFilteringSupport(const TextureCapsMap &textureCaps)
{
std::vector<GLenum> requiredFormats;
requiredFormats.push_back(GL_RGB32F);
requiredFormats.push_back(GL_RGBA32F);
return GetFormatSupport(textureCaps, requiredFormats, true, true, false);
}
// Checks for GL_OES_texture_half_float support
static bool DetermineHalfFloatTextureSupport(const TextureCapsMap &textureCaps)
{
std::vector<GLenum> requiredFormats;
requiredFormats.push_back(GL_RGB16F);
requiredFormats.push_back(GL_RGBA16F);
return GetFormatSupport(textureCaps, requiredFormats, true, false, true);
}
// Check for GL_EXT_color_buffer_float
static bool DetermineColorBufferFloatSupport(const TextureCapsMap &textureCaps)
{
std::vector<GLenum> requiredFormats;
requiredFormats.push_back(GL_R16F);
requiredFormats.push_back(GL_RG16F);
requiredFormats.push_back(GL_RGBA16F);
requiredFormats.push_back(GL_R32F);
requiredFormats.push_back(GL_RG32F);
requiredFormats.push_back(GL_RGBA32F);
requiredFormats.push_back(GL_R11F_G11F_B10F);
return GetFormatSupport(textureCaps, requiredFormats, true, false, true);
}
// Checks for GL_EXT_texture_rg support
static bool DetermineRGTextureSupport(const TextureCapsMap &textureCaps, bool checkHalfFloatFormats, bool checkFloatFormats)
{
std::vector<GLenum> requiredFormats;
requiredFormats.push_back(GL_R8);
requiredFormats.push_back(GL_RG8);
if (checkHalfFloatFormats)
{
requiredFormats.push_back(GL_R16F);
requiredFormats.push_back(GL_RG16F);
}
if (checkFloatFormats)
{
requiredFormats.push_back(GL_R32F);
requiredFormats.push_back(GL_RG32F);
}
return GetFormatSupport(textureCaps, requiredFormats, true, true, false);
}
