| // Copyright 2016 The SwiftShader Authors. All Rights Reserved. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| #ifndef sw_TextureStage_hpp |
| #define sw_TextureStage_hpp |
| |
| #include "Common/Types.hpp" |
| #include "Common/Math.hpp" |
| #include "Renderer/Color.hpp" |
| |
| namespace sw |
| { |
| class Sampler; |
| class PixelRoutine; |
| class Context; |
| |
| class TextureStage |
| { |
| friend class Context; // FIXME |
| |
| public: |
| enum StageOperation |
| { |
| STAGE_DISABLE, |
| STAGE_SELECTARG1, |
| STAGE_SELECTARG2, |
| STAGE_SELECTARG3, |
| STAGE_MODULATE, |
| STAGE_MODULATE2X, |
| STAGE_MODULATE4X, |
| STAGE_ADD, |
| STAGE_ADDSIGNED, |
| STAGE_ADDSIGNED2X, |
| STAGE_SUBTRACT, |
| STAGE_ADDSMOOTH, |
| STAGE_MULTIPLYADD, |
| STAGE_LERP, |
| STAGE_DOT3, |
| STAGE_BLENDCURRENTALPHA, |
| STAGE_BLENDDIFFUSEALPHA, |
| STAGE_BLENDFACTORALPHA, |
| STAGE_BLENDTEXTUREALPHA, |
| STAGE_BLENDTEXTUREALPHAPM, |
| STAGE_PREMODULATE, |
| STAGE_MODULATEALPHA_ADDCOLOR, |
| STAGE_MODULATECOLOR_ADDALPHA, |
| STAGE_MODULATEINVALPHA_ADDCOLOR, |
| STAGE_MODULATEINVCOLOR_ADDALPHA, |
| STAGE_BUMPENVMAP, |
| STAGE_BUMPENVMAPLUMINANCE, |
| |
| STAGE_LAST = STAGE_BUMPENVMAPLUMINANCE |
| }; |
| |
| enum SourceArgument |
| { |
| SOURCE_TEXTURE, |
| SOURCE_CONSTANT, |
| SOURCE_CURRENT, |
| SOURCE_DIFFUSE, |
| SOURCE_SPECULAR, |
| SOURCE_TEMP, |
| SOURCE_TFACTOR, |
| |
| SOURCE_LAST = SOURCE_TFACTOR |
| }; |
| |
| enum DestinationArgument |
| { |
| DESTINATION_CURRENT, |
| DESTINATION_TEMP, |
| |
| DESTINATION_LAST = DESTINATION_TEMP |
| }; |
| |
| enum ArgumentModifier |
| { |
| MODIFIER_COLOR, |
| MODIFIER_INVCOLOR, |
| MODIFIER_ALPHA, |
| MODIFIER_INVALPHA, |
| |
| MODIFIER_LAST = MODIFIER_INVALPHA |
| }; |
| |
| struct State |
| { |
| State(); |
| |
| unsigned int stageOperation : BITS(STAGE_LAST); |
| unsigned int firstArgument : BITS(SOURCE_LAST); |
| unsigned int secondArgument : BITS(SOURCE_LAST); |
| unsigned int thirdArgument : BITS(SOURCE_LAST); |
| unsigned int stageOperationAlpha : BITS(STAGE_LAST); |
| unsigned int firstArgumentAlpha : BITS(SOURCE_LAST); |
| unsigned int secondArgumentAlpha : BITS(SOURCE_LAST); |
| unsigned int thirdArgumentAlpha : BITS(SOURCE_LAST); |
| unsigned int firstModifier : BITS(MODIFIER_LAST); |
| unsigned int secondModifier : BITS(MODIFIER_LAST); |
| unsigned int thirdModifier : BITS(MODIFIER_LAST); |
| unsigned int firstModifierAlpha : BITS(MODIFIER_LAST); |
| unsigned int secondModifierAlpha : BITS(MODIFIER_LAST); |
| unsigned int thirdModifierAlpha : BITS(MODIFIER_LAST); |
| unsigned int destinationArgument : BITS(DESTINATION_LAST); |
| unsigned int texCoordIndex : BITS(7); |
| |
| unsigned int cantUnderflow : 1; |
| unsigned int usesTexture : 1; |
| }; |
| |
| struct Uniforms |
| { |
| word4 constantColor4[4]; |
| float4 bumpmapMatrix4F[2][2]; |
| word4 bumpmapMatrix4W[2][2]; |
| word4 luminanceScale4; |
| word4 luminanceOffset4; |
| }; |
| |
| TextureStage(); |
| |
| ~TextureStage(); |
| |
| void init(int stage, const Sampler *sampler, const TextureStage *previousStage); |
| |
| State textureStageState() const; |
| |
| void setConstantColor(const Color<float> &constantColor); |
| void setBumpmapMatrix(int element, float value); |
| void setLuminanceScale(float value); |
| void setLuminanceOffset(float value); |
| |
| void setTexCoordIndex(unsigned int texCoordIndex); |
| void setStageOperation(StageOperation stageOperation); |
| void setFirstArgument(SourceArgument firstArgument); |
| void setSecondArgument(SourceArgument secondArgument); |
| void setThirdArgument(SourceArgument thirdArgument); |
| void setStageOperationAlpha(StageOperation stageOperationAlpha); |
| void setFirstArgumentAlpha(SourceArgument firstArgumentAlpha); |
| void setSecondArgumentAlpha(SourceArgument secondArgumentAlpha); |
| void setThirdArgumentAlpha(SourceArgument thirdArgumentAlpha); |
| void setFirstModifier(ArgumentModifier firstModifier); |
| void setSecondModifier(ArgumentModifier secondModifier); |
| void setThirdModifier(ArgumentModifier thirdModifier); |
| void setFirstModifierAlpha(ArgumentModifier firstModifierAlpha); |
| void setSecondModifierAlpha(ArgumentModifier secondModifierAlpha); |
| void setThirdModifierAlpha(ArgumentModifier thirdModifierAlpha); |
| void setDestinationArgument(DestinationArgument destinationArgument); |
| |
| Uniforms uniforms; // FIXME: Private |
| |
| private: |
| bool usesColor(SourceArgument source) const; |
| bool usesAlpha(SourceArgument source) const; |
| bool uses(SourceArgument source) const; |
| bool usesCurrent() const; |
| bool usesDiffuse() const; |
| bool usesSpecular() const; |
| bool usesTexture() const; |
| bool isStageDisabled() const; |
| bool writesCurrent() const; |
| |
| int stage; |
| |
| StageOperation stageOperation; |
| SourceArgument firstArgument; |
| SourceArgument secondArgument; |
| SourceArgument thirdArgument; |
| StageOperation stageOperationAlpha; |
| SourceArgument firstArgumentAlpha; |
| SourceArgument secondArgumentAlpha; |
| SourceArgument thirdArgumentAlpha; |
| ArgumentModifier firstModifier; |
| ArgumentModifier secondModifier; |
| ArgumentModifier thirdModifier; |
| ArgumentModifier firstModifierAlpha; |
| ArgumentModifier secondModifierAlpha; |
| ArgumentModifier thirdModifierAlpha; |
| DestinationArgument destinationArgument; |
| |
| int texCoordIndex; |
| const Sampler *sampler; |
| const TextureStage *previousStage; |
| }; |
| } |
| |
| #endif // sw_TextureStage_hpp |