Compute shader support detected at runtime.

src/graphics/irr_driver.cpp

@@ -497,6 +497,7 @@ void IrrDriver::initDevice()
     hasBaseInstance = false;
     hasBuffserStorage = false;
     hasDrawIndirect = false;
+    hasComputeShaders = false;
     // Default false value for hasVSLayer if --no-graphics argument is used
     if (!ProfileWorld::isNoGraphics())
     {
@@ -516,6 +517,10 @@ void IrrDriver::initDevice()
             hasDrawIndirect = true;
             Log::info("GLDriver", "ARB Draw Indirect enabled");
         }
+        if (GLEW_ARB_compute_shader) {
+            hasComputeShaders = true;
+            Log::info("GLDriver", "ARB Compute Shader enabled");
+        }
     }
 
 

src/graphics/irr_driver.hpp

@@ -203,6 +203,7 @@ private:
     bool hasBaseInstance;
     bool hasDrawIndirect;
     bool hasBuffserStorage;
+    bool hasComputeShaders;
     bool m_need_ubo_workaround;
     bool m_need_rh_workaround;
     bool m_need_srgb_workaround;
@@ -324,6 +325,11 @@ public:
         return hasBuffserStorage;
     }
 
+    bool hasARBComputeShaders() const
+    {
+        return hasComputeShaders;
+    }
+
     video::SColorf getAmbientLight() const;
 
     struct GlowData {

src/graphics/post_processing.cpp

@@ -337,15 +337,12 @@ void PostProcessing::renderGaussian17TapBlur(FrameBuffer &in_fbo, FrameBuffer &a
     assert(in_fbo.getWidth() == auxiliary.getWidth() && in_fbo.getHeight() == auxiliary.getHeight());
     float inv_width = 1.0f / in_fbo.getWidth(), inv_height = 1.0f / in_fbo.getHeight();
     {
-#if WIN32
-        if (irr_driver->getGLSLVersion() < 430)
-#endif
+        if (irr_driver->hasARBComputeShaders())
         {
             auxiliary.Bind();
             FullScreenShader::Gaussian17TapHShader::getInstance()->SetTextureUnits(createVector<GLuint>(in_fbo.getRTT()[0], irr_driver->getFBO(FBO_LINEAR_DEPTH).getRTT()[0]));
             DrawFullScreenEffect<FullScreenShader::Gaussian17TapHShader>(core::vector2df(inv_width, inv_height));
         }
-#if WIN32
         else
         {
 
@@ -356,19 +353,15 @@ void PostProcessing::renderGaussian17TapBlur(FrameBuffer &in_fbo, FrameBuffer &a
             FullScreenShader::ComputeGaussian17TapHShader::getInstance()->setUniforms();
             glDispatchCompute(in_fbo.getWidth() / 8, in_fbo.getHeight() / 8, 1);
         }
-#endif
     }
     {
-#if WIN32
-        if (irr_driver->getGLSLVersion() < 430)
-#endif
+        if (irr_driver->hasARBComputeShaders())
         {
             in_fbo.Bind();
 
             FullScreenShader::Gaussian17TapVShader::getInstance()->SetTextureUnits(createVector<GLuint>(auxiliary.getRTT()[0], irr_driver->getFBO(FBO_LINEAR_DEPTH).getRTT()[0]));
             DrawFullScreenEffect<FullScreenShader::Gaussian17TapVShader>(core::vector2df(inv_width, inv_height));
         }
-#if WIN32
         else
         {
             glUseProgram(FullScreenShader::ComputeGaussian17TapVShader::getInstance()->Program);
@@ -378,7 +371,6 @@ void PostProcessing::renderGaussian17TapBlur(FrameBuffer &in_fbo, FrameBuffer &a
             FullScreenShader::ComputeGaussian17TapVShader::getInstance()->setUniforms();
             glDispatchCompute(in_fbo.getWidth() / 8, in_fbo.getHeight() / 8, 1);
         }
-#endif
     }
 }
 

src/graphics/shaders.cpp

@@ -1727,8 +1727,8 @@ namespace FullScreenShader
 
     ComputeGaussian17TapHShader::ComputeGaussian17TapHShader()
     {
-#if WIN32
-        if (irr_driver->getGLSLVersion() < 420)
+
+        if (irr_driver->hasARBComputeShaders())
             return;
         Program = LoadProgram(
             GL_COMPUTE_SHADER, file_manager->getAsset("shaders/bilateralH.comp").c_str());
@@ -1737,7 +1737,6 @@ namespace FullScreenShader
         TU_dest = 2;
         AssignUniforms();
         AssignTextureUnit(Program, TexUnit(TU_source, "source"), TexUnit(TU_depth, "depth"), TexUnit(TU_dest, "dest"));
-#endif
     }
 
     Gaussian6HBlurShader::Gaussian6HBlurShader()
@@ -1772,8 +1771,7 @@ namespace FullScreenShader
 
     ComputeGaussian17TapVShader::ComputeGaussian17TapVShader()
     {
-#if WIN32
-        if (irr_driver->getGLSLVersion() < 420)
+        if (irr_driver->hasARBComputeShaders())
             return;
         Program = LoadProgram(
             GL_COMPUTE_SHADER, file_manager->getAsset("shaders/bilateralV.comp").c_str());
@@ -1781,7 +1779,6 @@ namespace FullScreenShader
         TU_depth = 1;
         TU_dest = 2;
         AssignTextureUnit(Program, TexUnit(TU_source, "source"), TexUnit(TU_depth, "depth"), TexUnit(TU_dest, "dest"));
-#endif
     }
 
     Gaussian6VBlurShader::Gaussian6VBlurShader()