Add anaglyph stereoscopic modes into opengl runtime

Implement also anaglyph red-cyan & green-magenta stereoscopic modes
for opengl runtime. APIs for C++ and QML. Add options into viewer.

Task-number: QT3DS-3981
Change-Id: Idb9f659b3799e954253e37045c1a3b2a55fb2779
Reviewed-by: Miikka Heikkinen <miikka.heikkinen@qt.io>
Reviewed-by: Tomi Korpipää <tomi.korpipaa@qt.io>
Reviewed-by: Antti Määttä <antti.maatta@qt.io>

1 files changed, 2 insertions, 1 deletions

diff --git a/src/runtimerender/rendererimpl/Qt3DSRendererImplShaders.cpp b/src/runtimerender/rendererimpl/Qt3DSRendererImplShaders.cpp
index c33aaeb..d69e46e 100644
--- a/src/runtimerender/rendererimpl/Qt3DSRendererImplShaders.cpp
+++ b/src/runtimerender/rendererimpl/Qt3DSRendererImplShaders.cpp
@@ -2430,10 +2430,11 @@ namespace render {
         vertexGenerator.Append("}");
 
         fragmentGenerator.AddUniform("layer_image", "sampler2D");
+        fragmentGenerator.AddUniform("anaglyphColor", "vec4");
         fragmentGenerator.Append("void main() {");
         fragmentGenerator.Append("\tvec2 theCoords = uv_coords;\n");
         fragmentGenerator.Append("\tvec4 theLayerTexture = texture2D( layer_image, theCoords );\n");
-        fragmentGenerator.Append("\tfragOutput = theLayerTexture;\n");
+        fragmentGenerator.Append("\tfragOutput = theLayerTexture * anaglyphColor;\n");
         fragmentGenerator.Append("}");
         NVRenderShaderProgram *theShader = GetProgramGenerator().CompileGeneratedShader(
             "layer shader", SShaderCacheProgramFlags(), TShaderFeatureSet());