fix ios

Author: igagis

src/ruis/render/opengles/frame_buffer.cpp

@@ -68,7 +68,8 @@ frame_buffer::frame_buffer( //
 			// NOLINTNEXTLINE(cppcoreguidelines-pro-type-static-cast-downcast)
 			auto& tex = static_cast<texture_2d&>(*this->color);
 
-			glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, tex.tex, 0);
+			glFramebufferTexture2D(GL_FRAMEBUFFER,//
+				 GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, tex.tex, 0);
 			assert_opengl_no_error();
 		}
 
@@ -77,7 +78,8 @@ frame_buffer::frame_buffer( //
 			// NOLINTNEXTLINE(cppcoreguidelines-pro-type-static-cast-downcast)
 			auto& tex = static_cast<texture_depth&>(*this->depth);
 
-			glFramebufferTexture2D(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_TEXTURE_2D, tex.tex, 0);
+			glFramebufferTexture2D(GL_FRAMEBUFFER,//
+				 GL_DEPTH_ATTACHMENT, GL_TEXTURE_2D, tex.tex, 0);
 			assert_opengl_no_error();
 		}
 

src/ruis/render/opengles/texture_depth.cpp

@@ -41,13 +41,16 @@ texture_depth::texture_depth(
 	glTexImage2D( //
 		GL_TEXTURE_2D,
 		0, // 0th level, no mipmaps
-#if CFG_OS_NAME == CFG_OS_NAME_EMSCRIPTEN
+#if CFG_OS_NAME == CFG_OS_NAME_EMSCRIPTEN || CFG_OS_NAME == CFG_OS_NAME_IOS
 		// According to https://developer.mozilla.org/en-US/docs/Web/API/WEBGL_depth_texture
 		// WebGL needs GL_DEPTH_COMPONENT as internal format.
 		// Otherwise it doesn't work:
-		// - framebuffer with such depth attachment fails test for being complete.And WebGL prints warning
+		// - framebuffer with such depth attachment fails test for being complete. And WebGL prints warning.
 		// - WebGL texImage2D() prints warning: "Invalid internalformat: 0x81a5"
-		GL_DEPTH_COMPONENT, // internal format
+
+        // And iOS also needs this one instead of GL_DEPTH_COMPONENT16.
+
+        GL_DEPTH_COMPONENT, // internal format
 #else
 		GL_DEPTH_COMPONENT16, // internal format
 #endif
@@ -68,4 +71,4 @@ texture_depth::texture_depth(
 	assert_opengl_no_error();
 	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
 	assert_opengl_no_error();
-}
+}