New Compute shader stage in OpenGL 4.3.

src/Shader.cpp

@@ -106,12 +106,11 @@ GLuint Shader::compile() {
             case Type::Vertex:      err << "vertex";        break;
             #ifndef MAGNUM_TARGET_GLES
             case Type::Geometry:    err << "geometry";      break;
-            #endif
-            case Type::Fragment:    err << "fragment";      break;
-            #ifndef MAGNUM_TARGET_GLES
             case Type::TessellationControl: err << "tessellation control"; break;
             case Type::TessellationEvaluation: err << "tessellation evaluation"; break;
+            case Type::Compute:     err << "compute";       break;
             #endif
+            case Type::Fragment:    err << "fragment";      break;
         }
 
         /* Show error log and delete shader */

src/Shader.h

@@ -65,6 +65,13 @@ class MAGNUM_EXPORT Shader {
              * @requires_gl32 Extension @extension{ARB,geometry_shader4}
              */
             Geometry = GL_GEOMETRY_SHADER,
+
+            /**
+             * Compute shader
+             * @requires_gl
+             * @requires_gl43 Extension @extension{ARB,compute_shader}
+             */
+            Compute = GL_COMPUTE_SHADER,
             #endif
 
             Fragment = GL_FRAGMENT_SHADER   /**< Fragment shader */