Map renderer color write masks to OpenGL

src/renderer_gl/opengl_capabilities.cpp

@@ -803,6 +803,16 @@ std::uint8_t color_write_enabled() noexcept
     return gl_boolean_true;
 }
 
+OpenGlColorWriteMask color_write_mask_for_renderer_blend_state(pp::renderer::BlendState state) noexcept
+{
+    return OpenGlColorWriteMask {
+        .r = state.write_r ? gl_boolean_true : gl_boolean_false,
+        .g = state.write_g ? gl_boolean_true : gl_boolean_false,
+        .b = state.write_b ? gl_boolean_true : gl_boolean_false,
+        .a = state.write_a ? gl_boolean_true : gl_boolean_false,
+    };
+}
+
 std::uint32_t linear_texture_filter() noexcept
 {
     return gl_linear;

src/renderer_gl/opengl_capabilities.h

@@ -39,6 +39,13 @@ struct OpenGlEnumMapping {
     bool supported = false;
 };
 
+struct OpenGlColorWriteMask {
+    std::uint8_t r = 0;
+    std::uint8_t g = 0;
+    std::uint8_t b = 0;
+    std::uint8_t a = 0;
+};
+
 struct OpenGlReadbackFormat {
     std::uint32_t pixel_format = 0;
     std::uint32_t component_type = 0;
@@ -155,6 +162,8 @@ struct OpenGlWindowsWglContextConfig {
 [[nodiscard]] std::uint32_t rgba32f_internal_format() noexcept;
 [[nodiscard]] std::uint8_t color_write_disabled() noexcept;
 [[nodiscard]] std::uint8_t color_write_enabled() noexcept;
+[[nodiscard]] OpenGlColorWriteMask color_write_mask_for_renderer_blend_state(
+    pp::renderer::BlendState state) noexcept;
 [[nodiscard]] std::uint32_t linear_texture_filter() noexcept;
 [[nodiscard]] std::uint32_t linear_mipmap_linear_texture_filter() noexcept;
 [[nodiscard]] std::uint32_t nearest_texture_filter() noexcept;