- Fixed problem with a wrong type of GL_DEPTH_COMPONENT on MacOSX.

git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/trunk@4326 dfc29bdd-3216-0410-991c-e03cc46cb475

source/Irrlicht/COpenGLDriver.cpp

@@ -4707,6 +4707,27 @@ GLenum COpenGLDriver::getGLBlend(E_BLEND_FACTOR factor) const
 	return r;
 }
 
+GLenum COpenGLDriver::getZBufferBits() const
+{
+	GLenum bits = 0;
+	switch (Params.ZBufferBits)
+	{
+	case 16:
+		bits = GL_DEPTH_COMPONENT16;
+		break;
+	case 24:
+		bits = GL_DEPTH_COMPONENT24;
+		break;
+	case 32:
+		bits = GL_DEPTH_COMPONENT32;
+		break;
+	default:
+		bits = GL_DEPTH_COMPONENT;
+		break;
+	}
+	return bits;
+}
+
 #ifdef _IRR_COMPILE_WITH_CG_
 const CGcontext& COpenGLDriver::getCgContext()
 {

source/Irrlicht/COpenGLDriver.h

@@ -402,6 +402,9 @@ namespace video
 		//! Convert E_BLEND_FACTOR to OpenGL equivalent
 		GLenum getGLBlend(E_BLEND_FACTOR factor) const;
 
+		//! Get ZBuffer bits.
+		GLenum getZBufferBits() const;
+
 		//! Get Cg context
 		#ifdef _IRR_COMPILE_WITH_CG_
 		const CGcontext& getCgContext();

source/Irrlicht/COpenGLTexture.cpp

@@ -797,7 +797,7 @@ COpenGLFBODepthTexture::COpenGLFBODepthTexture(
 #endif
 		{
 			// generate depth texture
-			glTexImage2D(GL_TEXTURE_2D, 0, GL_DEPTH_COMPONENT24, ImageSize.Width,
+			glTexImage2D(GL_TEXTURE_2D, 0, Driver->getZBufferBits(), ImageSize.Width,
 				ImageSize.Height, 0, GL_DEPTH_COMPONENT, GL_UNSIGNED_BYTE, 0);
 
 			// generate stencil texture
@@ -817,7 +817,7 @@ COpenGLFBODepthTexture::COpenGLFBODepthTexture(
 		Driver->extGlGenRenderbuffers(1, &DepthRenderBuffer);
 		Driver->extGlBindRenderbuffer(GL_RENDERBUFFER_EXT, DepthRenderBuffer);
 		Driver->extGlRenderbufferStorage(GL_RENDERBUFFER_EXT,
-				GL_DEPTH_COMPONENT, ImageSize.Width,
+				Driver->getZBufferBits(), ImageSize.Width,
 				ImageSize.Height);
 	}
 #endif