Add renderer backend feature reporting

src/renderer_api/recording_renderer.cpp

@@ -654,6 +654,16 @@ const char* RecordingRenderDevice::backend_name() const noexcept
     return "recording";
 }
 
+RenderDeviceFeatures RecordingRenderDevice::features() const noexcept
+{
+    return RenderDeviceFeatures {
+        .explicit_texture_transitions = true,
+        .texture_copy = true,
+        .render_target_blit = true,
+        .frame_capture = true,
+    };
+}
+
 pp::foundation::Result<std::unique_ptr<ITexture2D>> RecordingRenderDevice::create_texture(
     TextureDesc desc) noexcept
 {

src/renderer_api/recording_renderer.h

@@ -199,6 +199,7 @@ public:
     RecordingRenderDevice() noexcept;
 
     [[nodiscard]] const char* backend_name() const noexcept override;
+    [[nodiscard]] RenderDeviceFeatures features() const noexcept override;
     [[nodiscard]] pp::foundation::Result<std::unique_ptr<ITexture2D>> create_texture(
         TextureDesc desc) noexcept override;
     [[nodiscard]] pp::foundation::Result<std::unique_ptr<IRenderTarget>> create_render_target(

src/renderer_api/renderer_api.h

@@ -226,6 +226,16 @@ struct ShaderProgramDesc {
     ShaderStageSource fragment;
 };
 
+struct RenderDeviceFeatures {
+    bool framebuffer_fetch = false;
+    bool explicit_texture_transitions = false;
+    bool texture_copy = false;
+    bool render_target_blit = false;
+    bool frame_capture = false;
+    bool float16_render_targets = false;
+    bool float32_render_targets = false;
+};
+
 class ITexture2D {
 public:
     virtual ~ITexture2D() = default;
@@ -321,6 +331,7 @@ class IRenderDevice {
 public:
     virtual ~IRenderDevice() = default;
     [[nodiscard]] virtual const char* backend_name() const noexcept = 0;
+    [[nodiscard]] virtual RenderDeviceFeatures features() const noexcept = 0;
     [[nodiscard]] virtual pp::foundation::Result<std::unique_ptr<ITexture2D>> create_texture(
         TextureDesc desc) noexcept = 0;
     [[nodiscard]] virtual pp::foundation::Result<std::unique_ptr<IRenderTarget>> create_render_target(

src/renderer_gl/opengl_capabilities.cpp

@@ -176,6 +176,18 @@ OpenGlCapabilities detect_opengl_capabilities(
     return capabilities;
 }
 
+pp::renderer::RenderDeviceFeatures render_device_features(OpenGlCapabilities capabilities) noexcept
+{
+    return pp::renderer::RenderDeviceFeatures {
+        .framebuffer_fetch = capabilities.framebuffer_fetch,
+        .texture_copy = true,
+        .render_target_blit = true,
+        .frame_capture = true,
+        .float16_render_targets = capabilities.float16_textures,
+        .float32_render_targets = capabilities.float32_textures,
+    };
+}
+
 std::uint32_t extension_count_query() noexcept
 {
     return gl_num_extensions;

src/renderer_gl/opengl_capabilities.h

@@ -1,5 +1,7 @@
 #pragma once
 
+#include "renderer_api/renderer_api.h"
+
 #include <array>
 #include <cstdint>
 #include <span>
@@ -46,6 +48,8 @@ struct OpenGlWindowsWglContextConfig {
 [[nodiscard]] OpenGlCapabilities detect_opengl_capabilities(
     std::span<const std::string_view> extensions,
     OpenGlRuntime runtime) noexcept;
+[[nodiscard]] pp::renderer::RenderDeviceFeatures render_device_features(
+    OpenGlCapabilities capabilities) noexcept;
 
 [[nodiscard]] std::uint32_t extension_count_query() noexcept;
 [[nodiscard]] std::uint32_t extension_string_name() noexcept;