[GPU] Texture integer scaling fetches; 8_8_8_8_GAMMA resolve

Integer num_format fetches now get their scale CPU-side instead of trying to guess in the shader. This is authoritative; no cvar. Both translators now use texture_integer_scale_bits after signs/gamma and before exponent bias. This alone fixes black screens and a bunch of rendering bugs across at least several dozen titles.

This new information lives in the updated FormatInfo table, including fixed component widths.

Resolve also has two new fixes.

8_8_8_8_GAMMA EDRAM sources can now decode through the PWL curve while still in linear space, before MSAA resolve or format conversion, then re-encoded for gamma destinations. This is also now default enabled via gamma_decode_pwl_resolve and has improved blowout in at least 4 titles, with no obvious regressions thus far.

Full resolve can also now pack fixed destinations according to copy_dest_number.

src/xenia/gpu/spirv_shader_translator.h

@@ -34,7 +34,7 @@ class SpirvShaderTranslator : public ShaderTranslator {
     // TODO(Triang3l): Change to 0xYYYYMMDD once it's out of the rapid
     // prototyping stage (easier to do small granular updates with an
     // incremental counter).
-    static constexpr uint32_t kVersion = 8;
+    static constexpr uint32_t kVersion = 9;
 
     enum class DepthStencilMode : uint32_t {
       kNoModifiers,
@@ -275,6 +275,13 @@ class SpirvShaderTranslator : public ShaderTranslator {
 
     // The constant blend factor for the respective modes.
     float edram_blend_constant[4];
+
+    // Integer num_format on fixed textures. Each dword packs the scale needed
+    // to turn normalized host samples back into guest integer values.
+    // bits 0:3 = component_bits - 1
+    // bit 4 = signed.
+    // Zero means no scale.
+    uint32_t texture_integer_scale_bits[32];
   };
 
   // Separate constant buffer for user clip planes
@@ -905,6 +912,7 @@ class SpirvShaderTranslator : public ShaderTranslator {
     kSystemConstantEdramRTKeepMask,
     kSystemConstantEdramRTClamp,
     kSystemConstantEdramBlendConstant,
+    kSystemConstantTextureIntegerScaleBits,
   };
   spv::Id uniform_system_constants_;
   spv::Id uniform_clip_plane_constants_;