dali-scene-loader/public-api/renderer-state.cpp

   1 /*
   2  * Copyright (c) 2021 Samsung Electronics Co., Ltd.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  * http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  *
  16  */
  17 #include "dali-scene-loader/public-api/renderer-state.h"
  18 #include "dali-scene-loader/public-api/utils.h"
  19
  20 namespace Dali
  21 {
  22 namespace SceneLoader
  23 {
  24 namespace
  25 {
  26 // NOTE: values for BlendFactor aren't contiguous, hence we need a mapping.
  27 const Dali::BlendFactor::Type kBlendFactors[] = {
  28   Dali::BlendFactor::ZERO,
  29   Dali::BlendFactor::ONE,
  30   Dali::BlendFactor::SRC_COLOR,
  31   Dali::BlendFactor::ONE_MINUS_SRC_COLOR,
  32   Dali::BlendFactor::SRC_ALPHA,
  33   Dali::BlendFactor::ONE_MINUS_SRC_ALPHA,
  34   Dali::BlendFactor::DST_ALPHA,
  35   Dali::BlendFactor::ONE_MINUS_DST_ALPHA,
  36   Dali::BlendFactor::DST_COLOR,
  37   Dali::BlendFactor::ONE_MINUS_DST_COLOR,
  38   Dali::BlendFactor::SRC_ALPHA_SATURATE,
  39   Dali::BlendFactor::CONSTANT_COLOR,
  40   Dali::BlendFactor::ONE_MINUS_CONSTANT_COLOR,
  41   Dali::BlendFactor::CONSTANT_ALPHA,
  42   Dali::BlendFactor::ONE_MINUS_CONSTANT_ALPHA,
  43 };
  44 } // namespace
  45
  46 namespace RendererState
  47 {
  48 #define RENDERER_SET_PROPERTY(name, value) renderer.SetProperty(Renderer::Property::name, (value))
  49
  50 void Apply(Type rendererState, Renderer& renderer)
  51 {
  52   RENDERER_SET_PROPERTY(DEPTH_WRITE_MODE, MaskMatch(rendererState, DEPTH_WRITE) ? DepthWriteMode::ON : DepthWriteMode::OFF);
  53   RENDERER_SET_PROPERTY(DEPTH_TEST_MODE, MaskMatch(rendererState, DEPTH_TEST) ? DepthTestMode::ON : DepthTestMode::OFF);
  54
  55   RENDERER_SET_PROPERTY(BLEND_MODE, MaskMatch(rendererState, ALPHA_BLEND) ? BlendMode::ON : BlendMode::OFF);
  56
  57   const bool cullBack = MaskMatch(rendererState, CULL_BACK);
  58   RENDERER_SET_PROPERTY(FACE_CULLING_MODE, MaskMatch(rendererState, CULL_FRONT) ? (cullBack ? FaceCullingMode::FRONT_AND_BACK : FaceCullingMode::FRONT) : (cullBack ? FaceCullingMode::BACK : FaceCullingMode::NONE));
  59
  60   if(auto depthFunc = (rendererState & DEPTH_FUNCTION_MASK) >> DEPTH_FUNCTION_SHIFT)
  61   {
  62     RENDERER_SET_PROPERTY(DEPTH_FUNCTION, static_cast<DepthFunction::Type>(depthFunc - 1));
  63   }
  64
  65   if(auto blendFactors = (rendererState & BLEND_FACTOR_MASK) >> BLEND_FACTOR_BASE_SHIFT)
  66   {
  67     if(auto srcRgb = (blendFactors & BLEND_FACTOR_ITEM_MASK))
  68     {
  69       RENDERER_SET_PROPERTY(BLEND_FACTOR_SRC_RGB, kBlendFactors[static_cast<BlendFactor::Type>(srcRgb - 1)]);
  70     }
  71
  72     blendFactors >>= BLEND_FACTOR_ITEM_BITS;
  73     if(auto dstRgb = (blendFactors & BLEND_FACTOR_ITEM_MASK))
  74     {
  75       RENDERER_SET_PROPERTY(BLEND_FACTOR_DEST_RGB, kBlendFactors[static_cast<BlendFactor::Type>(dstRgb - 1)]);
  76     }
  77
  78     blendFactors >>= BLEND_FACTOR_ITEM_BITS;
  79     if(auto srcAlpha = (blendFactors & BLEND_FACTOR_ITEM_MASK))
  80     {
  81       RENDERER_SET_PROPERTY(BLEND_FACTOR_SRC_ALPHA, kBlendFactors[static_cast<BlendFactor::Type>(srcAlpha - 1)]);
  82     }
  83
  84     blendFactors >>= BLEND_FACTOR_ITEM_BITS;
  85     if(auto dstAlpha = (blendFactors & BLEND_FACTOR_ITEM_MASK))
  86     {
  87       RENDERER_SET_PROPERTY(BLEND_FACTOR_DEST_ALPHA, kBlendFactors[static_cast<BlendFactor::Type>(dstAlpha - 1)]);
  88     }
  89   }
  90
  91   if(auto bufferMode = (rendererState & BUFFER_MODE_MASK) >> BUFFER_MODE_SHIFT)
  92   {
  93     RENDERER_SET_PROPERTY(RENDER_MODE, static_cast<RenderMode::Type>(bufferMode - 1));
  94   }
  95 }
  96
  97 } // namespace RendererState
  98
  99 } // namespace SceneLoader
 100 } // namespace Dali