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//
// Copyright 2016 The ANGLE Project Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
//
// Helper routines for the D3D11 texture format table.
#ifndef LIBANGLE_RENDERER_D3D_D3D11_TEXTURE_FORMAT_TABLE_UTILS_H_
#define LIBANGLE_RENDERER_D3D_D3D11_TEXTURE_FORMAT_TABLE_UTILS_H_
#include "libANGLE/renderer/d3d/d3d11/Renderer11.h"
namespace rx
{
namespace d3d11
{
using FormatSupportFunction = bool (*)(const Renderer11DeviceCaps &);
inline bool OnlyFL10Plus(const Renderer11DeviceCaps &deviceCaps)
{
return (deviceCaps.featureLevel >= D3D_FEATURE_LEVEL_10_0);
}
inline bool OnlyFL9_3(const Renderer11DeviceCaps &deviceCaps)
{
return (deviceCaps.featureLevel == D3D_FEATURE_LEVEL_9_3);
}
inline bool SupportsFormat(DXGI_FORMAT format, const Renderer11DeviceCaps &deviceCaps)
{
// Must support texture, SRV and RTV support
UINT mustSupport = D3D11_FORMAT_SUPPORT_TEXTURE2D | D3D11_FORMAT_SUPPORT_TEXTURECUBE |
D3D11_FORMAT_SUPPORT_SHADER_SAMPLE | D3D11_FORMAT_SUPPORT_MIP |
D3D11_FORMAT_SUPPORT_RENDER_TARGET;
UINT minimumRequiredSamples = 0;
if (d3d11_gl::GetMaximumClientVersion(deviceCaps.featureLevel).major > 2)
{
mustSupport |= D3D11_FORMAT_SUPPORT_TEXTURE3D;
// RGBA4, RGB5A1 and RGB565 are all required multisampled renderbuffer formats in ES3 and
// need to support a minimum of 4 samples.
minimumRequiredSamples = 4;
}
bool fullSupport = false;
if (format == DXGI_FORMAT_B5G6R5_UNORM)
{
// All hardware that supports DXGI_FORMAT_B5G6R5_UNORM should support autogen mipmaps, but
// check anyway.
mustSupport |= D3D11_FORMAT_SUPPORT_MIP_AUTOGEN;
fullSupport = ((deviceCaps.B5G6R5support & mustSupport) == mustSupport) &&
deviceCaps.B5G6R5maxSamples >= minimumRequiredSamples;
}
else if (format == DXGI_FORMAT_B4G4R4A4_UNORM)
{
fullSupport = ((deviceCaps.B4G4R4A4support & mustSupport) == mustSupport) &&
deviceCaps.B4G4R4A4maxSamples >= minimumRequiredSamples;
}
else if (format == DXGI_FORMAT_B5G5R5A1_UNORM)
{
fullSupport = ((deviceCaps.B5G5R5A1support & mustSupport) == mustSupport) &&
deviceCaps.B5G5R5A1maxSamples >= minimumRequiredSamples;
}
else
{
UNREACHABLE();
return false;
}
// This means that ANGLE would like to use the entry in the map if the inputted DXGI format
// *IS* supported.
// e.g. the entry might map GL_RGB5_A1 to DXGI_FORMAT_B5G5R5A1, which should only be used if
// DXGI_FORMAT_B5G5R5A1 is supported.
// In this case, we should only return 'true' if the format *IS* supported.
return fullSupport;
}
} // namespace d3d11
} // namespace rx
#endif // LIBANGLE_RENDERER_D3D_D3D11_TEXTURE_FORMAT_TABLE_UTILS_H_
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