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Add PixelFormat decomposition utilities. 

Similar to what VertexFormat already has -- getting channel count,
channel format, sRGB and color vs depth/stencil properties out of a
PixelFormat value. Very useful for various image conversion plugins.
pull/578/head
Vladimír Vondruš 4 years ago
parent
afc905880c
commit
846cb10735
5 changed files with 538 additions and 6 deletions
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  1. 2
      doc/changelog.dox
  2. 328
      src/Magnum/PixelFormat.cpp
  3. 56
      src/Magnum/PixelFormat.h
  4. 151
      src/Magnum/Test/PixelFormatTest.cpp
  5. 7
      src/Magnum/VertexFormat.h

2
doc/changelog.dox
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@ -53,6 +53,8 @@ See also:
including mapping to @ref GL::PixelFormat / @ref GL::PixelType,
@ref GL::TextureFormat and @ref Vk::PixelFormat and (partial) support in
@ref DebugTools::CompareImage
- New @ref pixelFormatChannelFormat(), @ref pixelFormatChannelCount(),
@ref isPixelFormatSrgb() and @ref isPixelFormatDepthOrStencil() helpers
- New @ref Degh, @ref Radh, @ref Range1Dh, @ref Range2Dh and @ref Range3Dh
typedefs for half-float angles and ranges
- New @ref Range1Dui, @ref Range2Dui and @ref Range3Dui typedefs for unsigned

328
src/Magnum/PixelFormat.cpp
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@ -118,6 +118,334 @@ UnsignedInt pixelFormatSize(const PixelFormat format) {
CORRADE_ASSERT_UNREACHABLE("pixelFormatSize(): invalid format" << format, {});
}
PixelFormat pixelFormatChannelFormat(const PixelFormat format) {
CORRADE_ASSERT(!isPixelFormatImplementationSpecific(format),
"pixelFormatChannelFormat(): can't determine channel format of an implementation-specific format" << reinterpret_cast<void*>(pixelFormatUnwrap(format)), {});
#ifdef CORRADE_TARGET_GCC
#pragma GCC diagnostic push
#pragma GCC diagnostic error "-Wswitch"
#endif
switch(format) {
case PixelFormat::R8Unorm:
case PixelFormat::RG8Unorm:
case PixelFormat::RGB8Unorm:
case PixelFormat::RGBA8Unorm:
return PixelFormat::R8Unorm;
case PixelFormat::R8Snorm:
case PixelFormat::RG8Snorm:
case PixelFormat::RGB8Snorm:
case PixelFormat::RGBA8Snorm:
return PixelFormat::R8Snorm;
case PixelFormat::R8Srgb:
case PixelFormat::RG8Srgb:
case PixelFormat::RGB8Srgb:
case PixelFormat::RGBA8Srgb:
return PixelFormat::R8Srgb;
case PixelFormat::R8UI:
case PixelFormat::RG8UI:
case PixelFormat::RGB8UI:
case PixelFormat::RGBA8UI:
return PixelFormat::R8UI;
case PixelFormat::R8I:
case PixelFormat::RG8I:
case PixelFormat::RGB8I:
case PixelFormat::RGBA8I:
return PixelFormat::R8I;
case PixelFormat::R16Unorm:
case PixelFormat::RG16Unorm:
case PixelFormat::RGB16Unorm:
case PixelFormat::RGBA16Unorm:
return PixelFormat::R16Unorm;
case PixelFormat::R16Snorm:
case PixelFormat::RG16Snorm:
case PixelFormat::RGB16Snorm:
case PixelFormat::RGBA16Snorm:
return PixelFormat::R16Snorm;
case PixelFormat::R16UI:
case PixelFormat::RG16UI:
case PixelFormat::RGB16UI:
case PixelFormat::RGBA16UI:
return PixelFormat::R16UI;
case PixelFormat::R16I:
case PixelFormat::RG16I:
case PixelFormat::RGB16I:
case PixelFormat::RGBA16I:
return PixelFormat::R16I;
case PixelFormat::R32UI:
case PixelFormat::RG32UI:
case PixelFormat::RGB32UI:
case PixelFormat::RGBA32UI:
return PixelFormat::R32UI;
case PixelFormat::R32I:
case PixelFormat::RG32I:
case PixelFormat::RGB32I:
case PixelFormat::RGBA32I:
return PixelFormat::R32I;
case PixelFormat::R16F:
case PixelFormat::RG16F:
case PixelFormat::RGB16F:
case PixelFormat::RGBA16F:
return PixelFormat::R16F;
case PixelFormat::R32F:
case PixelFormat::RG32F:
case PixelFormat::RGB32F:
case PixelFormat::RGBA32F:
return PixelFormat::R32F;
case PixelFormat::Stencil8UI:
case PixelFormat::Depth16Unorm:
case PixelFormat::Depth24Unorm:
case PixelFormat::Depth32F:
case PixelFormat::Depth16UnormStencil8UI:
case PixelFormat::Depth24UnormStencil8UI:
case PixelFormat::Depth32FStencil8UI:
CORRADE_ASSERT_UNREACHABLE("pixelFormatChannelFormat(): can't determine channel format of" << format, {});
}
#ifdef CORRADE_TARGET_GCC
#pragma GCC diagnostic pop
#endif
CORRADE_ASSERT_UNREACHABLE("pixelFormatChannelFormat(): invalid format" << format, {});
}
UnsignedInt pixelFormatChannelCount(const PixelFormat format) {
CORRADE_ASSERT(!isPixelFormatImplementationSpecific(format),
"pixelFormatChannelCount(): can't determine channel count of an implementation-specific format" << reinterpret_cast<void*>(pixelFormatUnwrap(format)), {});
#ifdef CORRADE_TARGET_GCC
#pragma GCC diagnostic push
#pragma GCC diagnostic error "-Wswitch"
#endif
switch(format) {
case PixelFormat::R8Unorm:
case PixelFormat::R8Snorm:
case PixelFormat::R8Srgb:
case PixelFormat::R8UI:
case PixelFormat::R8I:
case PixelFormat::R16Unorm:
case PixelFormat::R16Snorm:
case PixelFormat::R16UI:
case PixelFormat::R16I:
case PixelFormat::R32UI:
case PixelFormat::R32I:
case PixelFormat::R16F:
case PixelFormat::R32F:
return 1;
case PixelFormat::RG8Unorm:
case PixelFormat::RG8Snorm:
case PixelFormat::RG8Srgb:
case PixelFormat::RG8UI:
case PixelFormat::RG8I:
case PixelFormat::RG16Unorm:
case PixelFormat::RG16Snorm:
case PixelFormat::RG16UI:
case PixelFormat::RG16I:
case PixelFormat::RG32UI:
case PixelFormat::RG32I:
case PixelFormat::RG16F:
case PixelFormat::RG32F:
return 2;
case PixelFormat::RGB8Unorm:
case PixelFormat::RGB8Snorm:
case PixelFormat::RGB8Srgb:
case PixelFormat::RGB8UI:
case PixelFormat::RGB8I:
case PixelFormat::RGB16Unorm:
case PixelFormat::RGB16Snorm:
case PixelFormat::RGB16UI:
case PixelFormat::RGB16I:
case PixelFormat::RGB32UI:
case PixelFormat::RGB32I:
case PixelFormat::RGB16F:
case PixelFormat::RGB32F:
return 3;
case PixelFormat::RGBA8Unorm:
case PixelFormat::RGBA8Snorm:
case PixelFormat::RGBA8Srgb:
case PixelFormat::RGBA8UI:
case PixelFormat::RGBA8I:
case PixelFormat::RGBA16Unorm:
case PixelFormat::RGBA16Snorm:
case PixelFormat::RGBA16UI:
case PixelFormat::RGBA16I:
case PixelFormat::RGBA32UI:
case PixelFormat::RGBA32I:
case PixelFormat::RGBA16F:
case PixelFormat::RGBA32F:
return 4;
case PixelFormat::Depth16Unorm:
case PixelFormat::Depth24Unorm:
case PixelFormat::Depth32F:
case PixelFormat::Stencil8UI:
case PixelFormat::Depth16UnormStencil8UI:
case PixelFormat::Depth24UnormStencil8UI:
case PixelFormat::Depth32FStencil8UI:
CORRADE_ASSERT_UNREACHABLE("pixelFormatChannelCount(): can't determine channel count of" << format, {});
}
#ifdef CORRADE_TARGET_GCC
#pragma GCC diagnostic pop
#endif
CORRADE_ASSERT_UNREACHABLE("pixelFormatChannelCount(): invalid format" << format, {});
}
bool isPixelFormatSrgb(const PixelFormat format) {
CORRADE_ASSERT(!isPixelFormatImplementationSpecific(format),
"isPixelFormatSrgb(): can't determine colorspace of an implementation-specific format" << reinterpret_cast<void*>(pixelFormatUnwrap(format)), {});
#ifdef CORRADE_TARGET_GCC
#pragma GCC diagnostic push
#pragma GCC diagnostic error "-Wswitch"
#endif
switch(format) {
case PixelFormat::R8Srgb:
case PixelFormat::RG8Srgb:
case PixelFormat::RGB8Srgb:
case PixelFormat::RGBA8Srgb:
return true;
case PixelFormat::R8Unorm:
case PixelFormat::RG8Unorm:
case PixelFormat::RGB8Unorm:
case PixelFormat::RGBA8Unorm:
case PixelFormat::R8Snorm:
case PixelFormat::RG8Snorm:
case PixelFormat::RGB8Snorm:
case PixelFormat::RGBA8Snorm:
case PixelFormat::R8UI:
case PixelFormat::RG8UI:
case PixelFormat::RGB8UI:
case PixelFormat::RGBA8UI:
case PixelFormat::R8I:
case PixelFormat::RG8I:
case PixelFormat::RGB8I:
case PixelFormat::RGBA8I:
case PixelFormat::R16Unorm:
case PixelFormat::RG16Unorm:
case PixelFormat::RGB16Unorm:
case PixelFormat::RGBA16Unorm:
case PixelFormat::R16Snorm:
case PixelFormat::RG16Snorm:
case PixelFormat::RGB16Snorm:
case PixelFormat::RGBA16Snorm:
case PixelFormat::R16UI:
case PixelFormat::RG16UI:
case PixelFormat::RGB16UI:
case PixelFormat::RGBA16UI:
case PixelFormat::R16I:
case PixelFormat::RG16I:
case PixelFormat::RGB16I:
case PixelFormat::RGBA16I:
case PixelFormat::R32UI:
case PixelFormat::RG32UI:
case PixelFormat::RGB32UI:
case PixelFormat::RGBA32UI:
case PixelFormat::R32I:
case PixelFormat::RG32I:
case PixelFormat::RGB32I:
case PixelFormat::RGBA32I:
case PixelFormat::R16F:
case PixelFormat::RG16F:
case PixelFormat::RGB16F:
case PixelFormat::RGBA16F:
case PixelFormat::R32F:
case PixelFormat::RG32F:
case PixelFormat::RGB32F:
case PixelFormat::RGBA32F:
case PixelFormat::Depth16Unorm:
case PixelFormat::Depth24Unorm:
case PixelFormat::Depth32F:
case PixelFormat::Stencil8UI:
case PixelFormat::Depth16UnormStencil8UI:
case PixelFormat::Depth24UnormStencil8UI:
case PixelFormat::Depth32FStencil8UI:
return false;
}
#ifdef CORRADE_TARGET_GCC
#pragma GCC diagnostic pop
#endif
CORRADE_ASSERT_UNREACHABLE("isPixelFormatSrgb(): invalid format" << format, {});
}
bool isPixelFormatDepthOrStencil(const PixelFormat format) {
CORRADE_ASSERT(!isPixelFormatImplementationSpecific(format),
"isPixelFormatDepthOrStencil(): can't determine type of an implementation-specific format" << reinterpret_cast<void*>(pixelFormatUnwrap(format)), {});
#ifdef CORRADE_TARGET_GCC
#pragma GCC diagnostic push
#pragma GCC diagnostic error "-Wswitch"
#endif
switch(format) {
case PixelFormat::R8Unorm:
case PixelFormat::RG8Unorm:
case PixelFormat::RGB8Unorm:
case PixelFormat::RGBA8Unorm:
case PixelFormat::R8Snorm:
case PixelFormat::RG8Snorm:
case PixelFormat::RGB8Snorm:
case PixelFormat::RGBA8Snorm:
case PixelFormat::R8Srgb:
case PixelFormat::RG8Srgb:
case PixelFormat::RGB8Srgb:
case PixelFormat::RGBA8Srgb:
case PixelFormat::R8UI:
case PixelFormat::RG8UI:
case PixelFormat::RGB8UI:
case PixelFormat::RGBA8UI:
case PixelFormat::R8I:
case PixelFormat::RG8I:
case PixelFormat::RGB8I:
case PixelFormat::RGBA8I:
case PixelFormat::R16Unorm:
case PixelFormat::RG16Unorm:
case PixelFormat::RGB16Unorm:
case PixelFormat::RGBA16Unorm:
case PixelFormat::R16Snorm:
case PixelFormat::RG16Snorm:
case PixelFormat::RGB16Snorm:
case PixelFormat::RGBA16Snorm:
case PixelFormat::R16UI:
case PixelFormat::RG16UI:
case PixelFormat::RGB16UI:
case PixelFormat::RGBA16UI:
case PixelFormat::R16I:
case PixelFormat::RG16I:
case PixelFormat::RGB16I:
case PixelFormat::RGBA16I:
case PixelFormat::R32UI:
case PixelFormat::RG32UI:
case PixelFormat::RGB32UI:
case PixelFormat::RGBA32UI:
case PixelFormat::R32I:
case PixelFormat::RG32I:
case PixelFormat::RGB32I:
case PixelFormat::RGBA32I:
case PixelFormat::R16F:
case PixelFormat::RG16F:
case PixelFormat::RGB16F:
case PixelFormat::RGBA16F:
case PixelFormat::R32F:
case PixelFormat::RG32F:
case PixelFormat::RGB32F:
case PixelFormat::RGBA32F:
return false;
case PixelFormat::Depth16Unorm:
case PixelFormat::Depth24Unorm:
case PixelFormat::Depth32F:
case PixelFormat::Stencil8UI:
case PixelFormat::Depth16UnormStencil8UI:
case PixelFormat::Depth24UnormStencil8UI:
case PixelFormat::Depth32FStencil8UI:
return true;
}
#ifdef CORRADE_TARGET_GCC
#pragma GCC diagnostic pop
#endif
CORRADE_ASSERT_UNREACHABLE("isPixelFormatDepthOrStencil(): invalid format" << format, {});
}
namespace {
#ifndef DOXYGEN_GENERATING_OUTPUT /* It gets *really* confused */

56
src/Magnum/PixelFormat.h
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@ -26,7 +26,7 @@
*/
/** @file
* @brief Enum @ref Magnum::PixelFormat, @ref Magnum::CompressedPixelFormat, function @ref Magnum::pixelFormatSize(), @ref Magnum::isPixelFormatImplementationSpecific(), @ref Magnum::pixelFormatWrap(), @ref Magnum::pixelFormatUnwrap(), @ref Magnum::compressedPixelFormatBlockSize(), @ref Magnum::compressedPixelFormatBlockDataSize(), @ref Magnum::isCompressedPixelFormatImplementationSpecific(), @ref Magnum::compressedPixelFormatWrap(), @ref Magnum::compressedPixelFormatUnwrap()
* @brief Enum @ref Magnum::PixelFormat, @ref Magnum::CompressedPixelFormat, function @ref Magnum::pixelFormatSize(), @ref Magnum::pixelFormatChannelFormat(), @ref Magnum::pixelFormatChannelCount(), @ref Magnum::isPixelFormatSrgb(), @ref Magnum::isPixelFormatDepthOrStencil(), @ref Magnum::isPixelFormatImplementationSpecific(), @ref Magnum::pixelFormatWrap(), @ref Magnum::pixelFormatUnwrap(), @ref Magnum::compressedPixelFormatBlockSize(), @ref Magnum::compressedPixelFormatBlockDataSize(), @ref Magnum::isCompressedPixelFormatImplementationSpecific(), @ref Magnum::compressedPixelFormatWrap(), @ref Magnum::compressedPixelFormatUnwrap()
*/
#include <Corrade/Utility/Assert.h>
@ -65,7 +65,9 @@ For D3D, corresponds to @m_class{m-doc-external} [DXGI_FORMAT](https://docs.micr
and import is provided by the @ref Trade::DdsImporter "DdsImporter" plugin; for
Metal, corresponds to @m_class{m-doc-external} [MTLPixelFormat](https://developer.apple.com/documentation/metal/mtlpixelformat?language=objc).
See documentation of each value for more information about the mapping.
@see @ref pixelFormatSize(), @ref CompressedPixelFormat, @ref Image,
@see @ref pixelFormatSize(), @ref pixelFormatChannelFormat(),
@ref pixelFormatChannelCount(), @ref isPixelFormatSrgb(),
@ref isPixelFormatDepthOrStencil(), @ref CompressedPixelFormat, @ref Image,
@ref ImageView, @ref VertexFormat
*/
enum class PixelFormat: UnsignedInt {
@ -776,10 +778,58 @@ enum class PixelFormat: UnsignedInt {
@m_since_latest
Expects that the pixel format is *not* implementation-specific.
@see @ref isPixelFormatImplementationSpecific(), @ref GL::pixelFormatSize()
@see @ref isPixelFormatImplementationSpecific(), @ref GL::pixelFormatSize(),
@ref vertexFormatSize()
*/
MAGNUM_EXPORT UnsignedInt pixelFormatSize(PixelFormat format);
/**
@brief Channel format of given pixel format
@m_since_latest
Returns for example @ref PixelFormat::R8Srgb for
@ref PixelFormat::RGB8Srgb or @ref PixelFormat::R16F for
@ref PixelFormat::RG16F. Calling @ref pixelFormatChannelCount() on the returned
value will always give @cpp 1 @ce. Expects that the pixel format is *not*
implementation-specific and not a depth/stencil format.
@see @ref isPixelFormatImplementationSpecific(),
@ref isPixelFormatDepthOrStencil(), @ref isPixelFormatSrgb(),
@ref vertexFormatComponentFormat()
*/
MAGNUM_EXPORT PixelFormat pixelFormatChannelFormat(PixelFormat format);
/**
@brief Channel count of given pixel format
@m_since_latest
Returns for example @cpp 1 @ce for @ref PixelFormat::R8Unorm or @cpp 3 @ce for
@ref PixelFormat::RGB32F. Expects that the pixel format is *not*
implementation-specific and not a depth/stencil format.
@see @ref isPixelFormatImplementationSpecific(),
@ref isPixelFormatDepthOrStencil(), @ref vertexFormatComponentCount()
*/
MAGNUM_EXPORT UnsignedInt pixelFormatChannelCount(PixelFormat format);
/**
@brief Whether given pixel format is sRGB
@m_since_latest
Returns @cpp true @ce for `*Srgb` formats, @cpp false @ce otherwise. Expects
that the pixel format is *not* implementation-specific.
@see @ref isPixelFormatImplementationSpecific()
*/
MAGNUM_EXPORT bool isPixelFormatSrgb(PixelFormat format);
/**
@brief Whether given pixel format is depth or stenil
@m_since_latest
Returns @cpp true @ce for `Depth*`, `Stencil*` and combined depth/stencil
formats, @cpp false @ce otherwise. Expects that the pixel format is *not* implementation-specific.
@see @ref isPixelFormatImplementationSpecific()
*/
MAGNUM_EXPORT bool isPixelFormatDepthOrStencil(PixelFormat format);
#ifdef MAGNUM_BUILD_DEPRECATED
/**
* @brief @copybrief pixelFormatSize()

151
src/Magnum/Test/PixelFormatTest.cpp
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@ -44,6 +44,18 @@ struct PixelFormatTest: TestSuite::Tester {
void sizeInvalid();
void sizeImplementationSpecific();
void channelFormatCount();
void channelFormatCountInvalid();
void channelFormatCountDepthStencilImplementationSpecific();
void isSrgb();
void isSrgbInvalid();
void isSrgbImplementationSpecific();
void isDepthOrStencil();
void isDepthOrStencilInvalid();
void isDepthOrStencilImplementationSpecific();
void compressedBlockSize();
void compressedBlockSizeInvalid();
void compressedBlockSizeImplementationSpecific();
@ -82,6 +94,18 @@ PixelFormatTest::PixelFormatTest() {
&PixelFormatTest::sizeInvalid,
&PixelFormatTest::sizeImplementationSpecific,
&PixelFormatTest::channelFormatCount,
&PixelFormatTest::channelFormatCountInvalid,
&PixelFormatTest::channelFormatCountDepthStencilImplementationSpecific,
&PixelFormatTest::isSrgb,
&PixelFormatTest::isSrgbInvalid,
&PixelFormatTest::isSrgbImplementationSpecific,
&PixelFormatTest::isDepthOrStencil,
&PixelFormatTest::isDepthOrStencilInvalid,
&PixelFormatTest::isDepthOrStencilImplementationSpecific,
&PixelFormatTest::compressedBlockSize,
&PixelFormatTest::compressedBlockSizeInvalid,
&PixelFormatTest::compressedBlockSizeImplementationSpecific,
@ -122,7 +146,9 @@ void PixelFormatTest::mapping() {
/* Each case verifies:
- that the entries are ordered by number by comparing a function to
expected result (so insertion here is done in proper place)
- that there was no gap (unhandled value inside the range) */
- that there was no gap (unhandled value inside the range)
- that channel count times size of a channel equals to size of the
format, unless it's a depth/stencil type */
#ifdef CORRADE_TARGET_GCC
#pragma GCC diagnostic push
#pragma GCC diagnostic error "-Wswitch"
@ -133,6 +159,8 @@ void PixelFormatTest::mapping() {
CORRADE_COMPARE(Utility::ConfigurationValue<PixelFormat>::toString(PixelFormat::format, {}), #format); \
CORRADE_COMPARE(nextHandled, i); \
CORRADE_COMPARE(firstUnhandled, 0xffff); \
if(!isPixelFormatDepthOrStencil(PixelFormat::format)) \
CORRADE_COMPARE(pixelFormatChannelCount(PixelFormat::format)*pixelFormatSize(pixelFormatChannelFormat(PixelFormat::format)), pixelFormatSize(PixelFormat::format)); \
++nextHandled; \
continue;
#include "Magnum/Implementation/pixelFormatMapping.hpp"
@ -240,6 +268,127 @@ void PixelFormatTest::sizeImplementationSpecific() {
CORRADE_COMPARE(out.str(), "pixelFormatSize(): can't determine size of an implementation-specific format 0xdead\n");
}
void PixelFormatTest::channelFormatCount() {
CORRADE_COMPARE(pixelFormatChannelFormat(PixelFormat::R8Unorm), PixelFormat::R8Unorm);
CORRADE_COMPARE(pixelFormatChannelFormat(PixelFormat::RG8Snorm), PixelFormat::R8Snorm);
CORRADE_COMPARE(pixelFormatChannelFormat(PixelFormat::RGB8Srgb), PixelFormat::R8Srgb);
CORRADE_COMPARE(pixelFormatChannelFormat(PixelFormat::RGBA8UI), PixelFormat::R8UI);
CORRADE_COMPARE(pixelFormatChannelFormat(PixelFormat::RG8I), PixelFormat::R8I);
CORRADE_COMPARE(pixelFormatChannelFormat(PixelFormat::RG16Unorm), PixelFormat::R16Unorm);
CORRADE_COMPARE(pixelFormatChannelFormat(PixelFormat::RGBA16Snorm), PixelFormat::R16Snorm);
CORRADE_COMPARE(pixelFormatChannelFormat(PixelFormat::RG16UI), PixelFormat::R16UI);
CORRADE_COMPARE(pixelFormatChannelFormat(PixelFormat::RGBA16I), PixelFormat::R16I);
CORRADE_COMPARE(pixelFormatChannelFormat(PixelFormat::RGB32UI), PixelFormat::R32UI);
CORRADE_COMPARE(pixelFormatChannelFormat(PixelFormat::RG32I), PixelFormat::R32I);
CORRADE_COMPARE(pixelFormatChannelFormat(PixelFormat::RGB16F), PixelFormat::R16F);
CORRADE_COMPARE(pixelFormatChannelFormat(PixelFormat::RGB32F), PixelFormat::R32F);
CORRADE_COMPARE(pixelFormatChannelCount(PixelFormat::R16UI), 1);
CORRADE_COMPARE(pixelFormatChannelCount(PixelFormat::RG8Unorm), 2);
CORRADE_COMPARE(pixelFormatChannelCount(PixelFormat::RGB16I), 3);
CORRADE_COMPARE(pixelFormatChannelCount(PixelFormat::RGBA16F), 4);
}
void PixelFormatTest::channelFormatCountInvalid() {
#ifdef CORRADE_NO_ASSERT
CORRADE_SKIP("CORRADE_NO_ASSERT defined, can't test assertions");
#endif
std::ostringstream out;
Error redirectError{&out};
pixelFormatChannelFormat(PixelFormat{});
pixelFormatChannelFormat(PixelFormat(0xdead));
pixelFormatChannelCount(PixelFormat{});
pixelFormatChannelCount(PixelFormat(0xdead));
CORRADE_COMPARE(out.str(),
"pixelFormatChannelFormat(): invalid format PixelFormat(0x0)\n"
"pixelFormatChannelFormat(): invalid format PixelFormat(0xdead)\n"
"pixelFormatChannelCount(): invalid format PixelFormat(0x0)\n"
"pixelFormatChannelCount(): invalid format PixelFormat(0xdead)\n");
}
void PixelFormatTest::channelFormatCountDepthStencilImplementationSpecific() {
#ifdef CORRADE_NO_ASSERT
CORRADE_SKIP("CORRADE_NO_ASSERT defined, can't test assertions");
#endif
std::ostringstream out;
Error redirectError{&out};
pixelFormatChannelFormat(pixelFormatWrap(0xdead));
pixelFormatChannelFormat(PixelFormat::Depth16Unorm);
pixelFormatChannelCount(pixelFormatWrap(0xdead));
pixelFormatChannelCount(PixelFormat::Depth16Unorm);
CORRADE_COMPARE(out.str(),
"pixelFormatChannelFormat(): can't determine channel format of an implementation-specific format 0xdead\n"
"pixelFormatChannelFormat(): can't determine channel format of PixelFormat::Depth16Unorm\n"
"pixelFormatChannelCount(): can't determine channel count of an implementation-specific format 0xdead\n"
"pixelFormatChannelCount(): can't determine channel count of PixelFormat::Depth16Unorm\n");
}
void PixelFormatTest::isSrgb() {
CORRADE_VERIFY(isPixelFormatSrgb(PixelFormat::RG8Srgb));
CORRADE_VERIFY(!isPixelFormatSrgb(PixelFormat::RGB16F));
CORRADE_VERIFY(!isPixelFormatSrgb(PixelFormat::Stencil8UI));
}
void PixelFormatTest::isSrgbInvalid() {
#ifdef CORRADE_NO_ASSERT
CORRADE_SKIP("CORRADE_NO_ASSERT defined, can't test assertions");
#endif
std::ostringstream out;
Error redirectError{&out};
isPixelFormatSrgb(PixelFormat{});
isPixelFormatSrgb(PixelFormat(0xdead));
CORRADE_COMPARE(out.str(),
"isPixelFormatSrgb(): invalid format PixelFormat(0x0)\n"
"isPixelFormatSrgb(): invalid format PixelFormat(0xdead)\n");
}
void PixelFormatTest::isSrgbImplementationSpecific() {
#ifdef CORRADE_NO_ASSERT
CORRADE_SKIP("CORRADE_NO_ASSERT defined, can't test assertions");
#endif
std::ostringstream out;
Error redirectError{&out};
isPixelFormatSrgb(pixelFormatWrap(0xdead));
CORRADE_COMPARE(out.str(),
"isPixelFormatSrgb(): can't determine colorspace of an implementation-specific format 0xdead\n");
}
void PixelFormatTest::isDepthOrStencil() {
CORRADE_VERIFY(!isPixelFormatDepthOrStencil(PixelFormat::RG8Srgb));
CORRADE_VERIFY(!isPixelFormatDepthOrStencil(PixelFormat::RGB16F));
CORRADE_VERIFY(isPixelFormatDepthOrStencil(PixelFormat::Stencil8UI));
}
void PixelFormatTest::isDepthOrStencilInvalid() {
#ifdef CORRADE_NO_ASSERT
CORRADE_SKIP("CORRADE_NO_ASSERT defined, can't test assertions");
#endif
std::ostringstream out;
Error redirectError{&out};
isPixelFormatDepthOrStencil(PixelFormat{});
isPixelFormatDepthOrStencil(PixelFormat(0xdead));
CORRADE_COMPARE(out.str(),
"isPixelFormatDepthOrStencil(): invalid format PixelFormat(0x0)\n"
"isPixelFormatDepthOrStencil(): invalid format PixelFormat(0xdead)\n");
}
void PixelFormatTest::isDepthOrStencilImplementationSpecific() {
#ifdef CORRADE_NO_ASSERT
CORRADE_SKIP("CORRADE_NO_ASSERT defined, can't test assertions");
#endif
std::ostringstream out;
Error redirectError{&out};
isPixelFormatDepthOrStencil(pixelFormatWrap(0xdead));
CORRADE_COMPARE(out.str(),
"isPixelFormatDepthOrStencil(): can't determine type of an implementation-specific format 0xdead\n");
}
void PixelFormatTest::compressedBlockSize() {
CORRADE_COMPARE(compressedPixelFormatBlockSize(CompressedPixelFormat::Etc2RGB8A1Srgb), (Vector3i{4, 4, 1}));
CORRADE_COMPARE(compressedPixelFormatBlockDataSize(CompressedPixelFormat::Etc2RGB8A1Srgb), 8);

7
src/Magnum/VertexFormat.h
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@ -1366,6 +1366,7 @@ template<class T = UnsignedInt> constexpr T vertexFormatUnwrap(VertexFormat form
To get size of a single component, call this function on a result of
@ref vertexFormatComponentFormat().
@see @ref pixelFormatSize()
*/
MAGNUM_EXPORT UnsignedInt vertexFormatSize(VertexFormat format);
@ -1380,7 +1381,8 @@ The function also removes the normalization aspect from the format --- use
Calling @ref vertexFormatComponentCount() on the returned value will always
give @cpp 1 @ce; calling @ref isVertexFormatNormalized() on the returned
value will always give @cpp false @ce.
@see @ref vertexFormat(VertexFormat, UnsignedInt, bool)
@see @ref vertexFormat(VertexFormat, UnsignedInt, bool),
@ref pixelFormatChannelFormat()
*/
MAGNUM_EXPORT VertexFormat vertexFormatComponentFormat(VertexFormat format);
@ -1390,7 +1392,8 @@ MAGNUM_EXPORT VertexFormat vertexFormatComponentFormat(VertexFormat format);
Returns @cpp 1 @ce for scalar formats and e.g. @cpp 3 @ce for
@ref VertexFormat::Vector3ub.
@see @ref vertexFormat(VertexFormat, UnsignedInt, bool)
@see @ref vertexFormat(VertexFormat, UnsignedInt, bool),
@ref pixelFormatChannelCount()
*/
MAGNUM_EXPORT UnsignedInt vertexFormatComponentCount(VertexFormat format);

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