Added platform macros in GLSL shaders

Author: TheMostDiligent

Graphics/GraphicsEngineOpenGL/src/GLContextMacOS.mm

@@ -32,17 +32,17 @@
 
 static void glDrawArraysInstancedBaseInstance_stub(GLenum mode, GLint first, GLsizei count, GLsizei primcount, GLuint baseinstance)
 {
-    LOG_ERROR_MESSAGE_ONCE("glDrawArraysInstancedBaseInstance is not supported on MacOS");
+    LOG_ERROR_MESSAGE("glDrawArraysInstancedBaseInstance is not supported on MacOS");
 }
 
 static void glDrawElementsInstancedBaseInstance_stub(GLenum mode, GLsizei count, GLenum type, const void *indices, GLsizei primcount, GLuint baseinstance)
 {
-    LOG_ERROR_MESSAGE_ONCE("glDrawElementsInstancedBaseInstance is not supported on MacOS");
+    LOG_ERROR_MESSAGE("glDrawElementsInstancedBaseInstance is not supported on MacOS");
 }
 
 static void  glDrawElementsInstancedBaseVertexBaseInstance_stub(GLenum mode, GLsizei count, GLenum type, const void *indices, GLsizei primcount, GLint basevertex, GLuint baseinstance)
 {
-    LOG_ERROR_MESSAGE_ONCE("glDrawElementsInstancedBaseVertexBaseInstance is not supported on MacOS");
+    LOG_ERROR_MESSAGE("glDrawElementsInstancedBaseVertexBaseInstance is not supported on MacOS");
 }
 
 

Graphics/GraphicsEngineOpenGL/src/ShaderGLImpl.cpp

@@ -52,10 +52,18 @@ ShaderGLImpl::ShaderGLImpl(IReferenceCounters *pRefCounters, RenderDeviceGLImpl
         "#version 430 core\n"
         "#define DESKTOP_GL 1\n"
     );
+#   if PLATFORM_WIN32
+        Settings.append("#define PLATFORM_WIN32 1\n");
+#   elif PLATFORM_LINUX
+        Settings.append("#define PLATFORM_LINUX 1\n");
+#   else
+#       error Unexpected platform
+#   endif
 #elif PLATFORM_MACOS
     Settings.append(
         "#version 410 core\n"
         "#define DESKTOP_GL 1\n"
+        "#define PLATFORM_MACOS 1\n"
     );
 #elif PLATFORM_IOS
     Settings.append(
@@ -65,6 +73,8 @@ ShaderGLImpl::ShaderGLImpl(IReferenceCounters *pRefCounters, RenderDeviceGLImpl
         "#  define GL_ES 1\n"
         "#endif\n"
 
+        "#define PLATFORM_IOS 1\n"
+
         "precision highp float;\n"
         "precision highp int;\n"
         //"precision highp uint;\n"
@@ -92,7 +102,7 @@ ShaderGLImpl::ShaderGLImpl(IReferenceCounters *pRefCounters, RenderDeviceGLImpl
     if(m_Desc.ShaderType == SHADER_TYPE_VERTEX)
         Settings.append("out vec4 gl_Position;\n");
 
-#elif defined(ANDROID)
+#elif PLATFORM_ANDROID
     Settings.append(
         "#version 310 es\n"
     );
@@ -107,6 +117,8 @@ ShaderGLImpl::ShaderGLImpl(IReferenceCounters *pRefCounters, RenderDeviceGLImpl
         "#ifndef GL_ES\n"
         "#  define GL_ES 1\n"
         "#endif\n"
+ 
+        "#define PLATFORM_ANDROID 1\n"
 
         "precision highp float;\n"
         "precision highp int;\n"