[D3D12] Point sprites and color exponent bias

src/xenia/gpu/d3d12/shaders/xenos_draw.hlsli

@@ -0,0 +1,34 @@
+#ifndef XENIA_GPU_D3D12_SHADERS_XENOS_DRAW_HLSLI_
+#define XENIA_GPU_D3D12_SHADERS_XENOS_DRAW_HLSLI_
+
+cbuffer XeSystemConstants : register(b0) {
+  // vec4 0
+  float3 xe_mul_rcp_w;
+  uint xe_vertex_base_index;
+  // vec4 1
+  float3 xe_ndc_scale;
+  uint xe_vertex_index_endian;
+  // vec4 2
+  float3 xe_ndc_offset;
+  float xe_pixel_half_pixel_offset;
+  // vec4 3
+  float2 xe_point_size;
+  float2 xe_ssaa_inv_scale;
+  // vec4 4
+  uint xe_pixel_pos_reg;
+  int xe_alpha_test;
+  float2 xe_alpha_test_range;
+  // vec4 5
+  float4 xe_color_exp_bias;
+  // vec4 6
+  uint4 xe_color_output_map;
+};
+
+struct XeVertex {
+  float4 interpolators[16] : TEXCOORD0;
+  float2 point_coord : TEXCOORD16;
+  float4 position : SV_Position;
+  float point_size : PSIZE;
+};
+
+#endif  // XENIA_GPU_D3D12_SHADERS_XENOS_DRAW_HLSLI_