1  namespace Ryujinx.Graphics.Gpu
 2  {
 3      /// <summary>
 4      /// Common Maxwell GPU constants.
 5      /// </summary>
 6      static class Constants
 7      {
 8          /// <summary>
 9          /// Maximum number of compute uniform buffers.
10          /// </summary>
11          /// <remarks>
12          /// This does not reflect the hardware count, the API will emulate some constant buffers using
13          /// global memory to make up for the low amount of compute constant buffers supported by hardware (only 8).
14          /// </remarks>
15          public const int TotalCpUniformBuffers = 17; // 8 hardware constant buffers + 9 emulated (14 available to the user).
16  
17          /// <summary>
18          /// Maximum number of compute storage buffers.
19          /// </summary>
20          /// <remarks>
21          /// The maximum number of storage buffers is API limited, the hardware supports an unlimited amount.
22          /// </remarks>
23          public const int TotalCpStorageBuffers = 16;
24  
25          /// <summary>
26          /// Maximum number of graphics uniform buffers.
27          /// </summary>
28          public const int TotalGpUniformBuffers = 18;
29  
30          /// <summary>
31          /// Maximum number of graphics storage buffers.
32          /// </summary>
33          /// <remarks>
34          /// The maximum number of storage buffers is API limited, the hardware supports an unlimited amount.
35          /// </remarks>
36          public const int TotalGpStorageBuffers = 16;
37  
38          /// <summary>
39          /// Maximum number of transform feedback buffers.
40          /// </summary>
41          public const int TotalTransformFeedbackBuffers = 4;
42  
43          /// <summary>
44          /// Maximum number of render target color buffers.
45          /// </summary>
46          public const int TotalRenderTargets = 8;
47  
48          /// <summary>
49          /// Number of shader stages.
50          /// </summary>
51          public const int ShaderStages = 5;
52  
53          /// <summary>
54          /// Maximum number of vertex attributes.
55          /// </summary>
56          public const int TotalVertexAttribs = 16; // FIXME: Should be 32, but OpenGL only supports 16.
57  
58          /// <summary>
59          /// Maximum number of vertex buffers.
60          /// </summary>
61          public const int TotalVertexBuffers = 16;
62  
63          /// <summary>
64          /// Maximum number of viewports.
65          /// </summary>
66          public const int TotalViewports = 16;
67  
68          /// <summary>
69          /// Maximum size of gl_ClipDistance array in shaders.
70          /// </summary>
71          public const int TotalClipDistances = 8;
72  
73          /// <summary>
74          /// Byte alignment for texture stride.
75          /// </summary>
76          public const int StrideAlignment = 32;
77  
78          /// <summary>
79          /// Byte alignment for block linear textures
80          /// </summary>
81          public const int GobAlignment = 64;
82  
83          /// <summary>
84          /// Number of the uniform buffer reserved by the driver to store the storage buffer base addresses.
85          /// </summary>
86          public const int DriverReservedUniformBuffer = 0;
87  
88          /// <summary>
89          /// Maximum size that an storage buffer is assumed to have when the correct size is unknown.
90          /// </summary>
91          public const ulong MaxUnknownStorageSize = 0x100000;
92  
93          /// <summary>
94          /// Size of a bindless texture handle as exposed by guest graphics APIs.
95          /// </summary>
96          public const int TextureHandleSizeInBytes = sizeof(ulong);
97      }
98  }