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Diffstat (limited to 'Runtime/GfxDevice/ChannelAssigns.cpp')
| -rw-r--r-- | Runtime/GfxDevice/ChannelAssigns.cpp | 225 |
1 files changed, 225 insertions, 0 deletions
diff --git a/Runtime/GfxDevice/ChannelAssigns.cpp b/Runtime/GfxDevice/ChannelAssigns.cpp new file mode 100644 index 0000000..59ec758 --- /dev/null +++ b/Runtime/GfxDevice/ChannelAssigns.cpp @@ -0,0 +1,225 @@ +#include "UnityPrefix.h" +#include "ChannelAssigns.h" +//#include "ShaderLabErrors.h" + +// Channel names (strings for reading from ShaderLab) +static const char * const kShaderChannelName[kShaderChannelCount] = { + "VERTEX", + "NORMAL", + "COLOR", + "TEXCOORD", + "TEXCOORD1", + "TANGENT", +}; + + +ShaderChannel GetShaderChannelFromName( const std::string& name ) +{ + std::string nameUpper = ToUpper(name); + for( int i = 0; i < kShaderChannelCount; ++i ) + if( kShaderChannelName[i] == nameUpper ) + return (ShaderChannel)i; + + return kShaderChannelNone; +} + + + +ChannelAssigns::ChannelAssigns() +: m_TargetMap(0) +, m_SourceMap(0) +, m_DirectlyWired(true) +{ + for( int i = 0; i < kVertexCompCount; ++i ) + m_Channels[i] = kShaderChannelNone; +} + +void ChannelAssigns::MergeWith( const ChannelAssigns& additional ) +{ + for( int i = 0; i < kVertexCompCount; ++i ) + { + ShaderChannel source = additional.GetSourceForTarget(VertexComponent(i)); + if( source != kShaderChannelNone ) + Bind( source, (VertexComponent)i ); + } +} + +static bool IsChannelDirectlyWired (ShaderChannel source, VertexComponent target) +{ + switch (source) + { + case kShaderChannelVertex: + return (target == kVertexCompVertex); + case kShaderChannelNormal: + return (target == kVertexCompNormal); + case kShaderChannelColor: + return (target == kVertexCompColor); + case kShaderChannelTexCoord0: + return (target == kVertexCompTexCoord0); + case kShaderChannelTexCoord1: + return (target == kVertexCompTexCoord1); + case kShaderChannelTangent: + return (target == kVertexCompTexCoord2); + default: + break; + } + return false; +} + +void ChannelAssigns::Bind (ShaderChannel source, VertexComponent target) +{ + AssertIf( source == kShaderChannelNone ); + // TODO: skip kShaderChannelTexCoord ones here? + // TODO: filter duplicates somehow? + m_Channels[target] = source; + m_TargetMap |= (1<<target); + m_SourceMap |= (1<<source); + + if (m_DirectlyWired) + m_DirectlyWired = IsChannelDirectlyWired (source, target); +} + +void ChannelAssigns::Unbind( VertexComponent target ) +{ + m_TargetMap &= ~(1<<target); + m_Channels[target] = kShaderChannelNone; + + RecalculateIsDirectlyWired (); +} + +void ChannelAssigns::RecalculateIsDirectlyWired () +{ + m_DirectlyWired = true; + for (int i = 0; i < kVertexCompCount && m_DirectlyWired; ++i) + { + ShaderChannel source = GetSourceForTarget(VertexComponent(i)); + if( source != kShaderChannelNone ) + m_DirectlyWired &= IsChannelDirectlyWired (source, (VertexComponent)i); + } +} + +bool ChannelAssigns::operator== (const ChannelAssigns& other) const +{ + return m_SourceMap == other.m_SourceMap && + m_TargetMap == other.m_TargetMap && + memcmp(&m_Channels[0], &other.m_Channels[0], sizeof(m_Channels)) == 0; +} + + +#if ENABLE_UNIT_TESTS +#include "External/UnitTest++/src/UnitTest++.h" +#include "External/shaderlab/Library/SLParserData.h" +SUITE (ChanelAssignsTest) +{ +TEST(IsDirectlyWired) +{ + ChannelAssigns ch; + // usual binding + ch.Bind(kShaderChannelVertex, kVertexCompVertex); + CHECK(ch.IsDirectlyWired()); + ch.Bind(kShaderChannelNormal, kVertexCompNormal); + CHECK(ch.IsDirectlyWired()); + ch.Bind(kShaderChannelColor, kVertexCompColor); + CHECK(ch.IsDirectlyWired()); + ch.Bind(kShaderChannelTexCoord0, kVertexCompTexCoord0); + CHECK(ch.IsDirectlyWired()); + ch.Bind(kShaderChannelTexCoord1, kVertexCompTexCoord1); + CHECK(ch.IsDirectlyWired()); + ch.Bind(kShaderChannelTangent, kVertexCompTexCoord2); + CHECK(ch.IsDirectlyWired()); + + // bind twice + ch.Bind(kShaderChannelVertex, kVertexCompVertex); + ch.Bind(kShaderChannelNormal, kVertexCompNormal); + ch.Bind(kShaderChannelColor, kVertexCompColor); + ch.Bind(kShaderChannelTexCoord0, kVertexCompTexCoord0); + ch.Bind(kShaderChannelTexCoord1, kVertexCompTexCoord1); + ch.Bind(kShaderChannelTangent, kVertexCompTexCoord2); + CHECK(ch.IsDirectlyWired()); + + // cross-bar + ch.Bind(kShaderChannelTexCoord0, kVertexCompTexCoord2); + CHECK(!ch.IsDirectlyWired()); + + // unbinding cross-bar + ch.Unbind(kVertexCompTexCoord2); + CHECK(ch.IsDirectlyWired()); + + // rebinding + ch.Bind(kShaderChannelTexCoord0, kVertexCompTexCoord0); + ch.Bind(kShaderChannelTexCoord1, kVertexCompTexCoord1); + ch.Bind(kShaderChannelTangent, kVertexCompTexCoord2); + CHECK(ch.IsDirectlyWired()); + + // cross-bar 2 + ChannelAssigns ch2 = ch; + ch2.Bind(kShaderChannelVertex, kVertexCompNormal); + CHECK(!ch2.IsDirectlyWired()); + ch2 = ch; + ch2.Bind(kShaderChannelNormal, kVertexCompColor); + CHECK(!ch2.IsDirectlyWired()); + ch2 = ch; + ch2.Bind(kShaderChannelColor, kVertexCompTexCoord0); + CHECK(!ch2.IsDirectlyWired()); + ch2 = ch; + ch2.Bind(kShaderChannelTexCoord0, kVertexCompTexCoord2); + CHECK(!ch2.IsDirectlyWired()); + ch2 = ch; + ch2.Bind(kShaderChannelTexCoord1, kVertexCompVertex); + CHECK(!ch2.IsDirectlyWired()); + ch2 = ch; + ch2.Bind(kShaderChannelTangent, kVertexCompAttrib0); + CHECK(!ch2.IsDirectlyWired()); + ch2 = ch; + ch2.Bind(kShaderChannelTexCoord0, kVertexCompTexCoord1); + CHECK(!ch2.IsDirectlyWired()); + ch2 = ch; + ch2.Bind(kShaderChannelTexCoord0, kVertexCompTexCoord2); + CHECK(!ch2.IsDirectlyWired()); + ch2 = ch; + ch2.Bind(kShaderChannelTexCoord0, kVertexCompColor); + CHECK(!ch2.IsDirectlyWired()); + + // unbinding all + ch.Unbind(kVertexCompVertex); + ch.Unbind(kVertexCompNormal); + ch.Unbind(kVertexCompColor); + ch.Unbind(kVertexCompTexCoord0); + ch.Unbind(kVertexCompTexCoord1); + ch.Unbind(kVertexCompTexCoord2); + CHECK(ch.IsDirectlyWired()); + + // check empty/1channel + ch.Bind(kShaderChannelVertex, kVertexCompTexCoord0); + CHECK(!ch.IsDirectlyWired()); + + ch.Unbind(kVertexCompTexCoord0); + CHECK(ch.IsDirectlyWired()); + CHECK(ch.IsEmpty()); + + ch.Bind(kShaderChannelVertex, kVertexCompVertex); + CHECK(ch.IsDirectlyWired()); +} +TEST(IsDirectlyWiredXBar) +{ + ChannelAssigns ch; + // usual binding + ch.Bind(kShaderChannelVertex, kVertexCompVertex); + ch.Bind(kShaderChannelNormal, kVertexCompNormal); + CHECK(ch.IsDirectlyWired()); + ch.Bind(kShaderChannelTexCoord0, kVertexCompTexCoord1); + ch.Bind(kShaderChannelTexCoord1, kVertexCompTexCoord0); + CHECK(!ch.IsDirectlyWired()); +} +TEST(IsDirectlyWiredUpdatedWhenCreatingFromParserChannels) +{ + ShaderLab::ParserBindChannels pchn; + pchn.Bind(kShaderChannelTexCoord0, kVertexCompTexCoord1, false, NULL); + pchn.Bind(kShaderChannelTexCoord1, kVertexCompTexCoord0, false, NULL); + ChannelAssigns ch; + ch.FromParsedChannels (pchn); + CHECK(!ch.IsDirectlyWired()); +} +} + +#endif |