[engines, maxwell, video_core, texture_cache] Implement IsMethodExecutableConstexpr and refactor UpdateRenderTargets

src/video_core/engines/maxwell_3d.h

@@ -54,6 +54,23 @@ class DrawManager;
 
 #define MAXWELL3D_REG_INDEX(field_name) (offsetof(Maxwell3D::Regs, field_name) / sizeof(u32))
 
+constexpr bool IsMethodExecutableConstexpr(u32 method) {
+    if (method >= 0xE00) {
+        return true;
+    }
+    return method == 0x0585 || method == 0x0586 || method == 0x035D || method == 0x035E ||
+           method == 0x0364 || method == 0x0365 || method == 0x1296 || method == 0x163B ||
+           method == 0x163C || method == 0x163D || method == 0x1640 || method == 0x1641 ||
+           method == 0x1642 || method == 0x1646 || method == 0x1647 || method == 0x035F ||
+           method == 0x0586 || method == 0x0D61 || method == 0x031E || method == 0x0B07 ||
+           method == 0x0545 || method == 0x0546 || method == 0x0547 || method == 0x0830 ||
+           (method >= 0x02CB && method <= 0x02DA) || 
+           (method >= 0x0D00 && method <= 0x0D04) || 
+           method == 0x0D1C || method == 0x19D0 || method == 0x06C0 || method == 0x06C3 ||
+           method == 0x0A04 || method == 0x0DF0 || method == 0x1574 || method == 0x1608 ||
+           method == 0x1609 || method == 0x160A;
+}
+
 class Maxwell3D final : public EngineInterface {
 public:
     explicit Maxwell3D(Core::System& system, MemoryManager& memory_manager);

src/video_core/texture_cache/texture_cache.h

@@ -496,7 +496,7 @@ template <class P>
 void TextureCache<P>::UpdateRenderTargets(bool is_clear) {
     using namespace VideoCommon::Dirty;
     auto& flags = maxwell3d->dirty.flags;
-    if (is_clear || !flags[Dirty::RenderTargets]) {
+    if (!flags[Dirty::RenderTargets]) {
         for (size_t index = 0; index < NUM_RT; ++index) {
             ImageViewId& color_buffer_id = render_targets.color_buffer_ids[index];
             PrepareImageView(color_buffer_id, true, is_clear && IsFullClear(color_buffer_id));
@@ -506,11 +506,14 @@ void TextureCache<P>::UpdateRenderTargets(bool is_clear) {
         return;
     }
 
-    const bool rescaled = RescaleRenderTargets();
-    if (is_rescaling != rescaled) {
-        flags[Dirty::RescaleViewports] = true;
-        flags[Dirty::RescaleScissors] = true;
-        is_rescaling = rescaled;
+    bool rescaled = is_rescaling;
+    if (!is_clear) {
+        rescaled = RescaleRenderTargets();
+        if (is_rescaling != rescaled) {
+            flags[Dirty::RescaleViewports] = true;
+            flags[Dirty::RescaleScissors] = true;
+            is_rescaling = rescaled;
+        }
     }
 
     for (size_t index = 0; index < NUM_RT; ++index) {