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some prepwork for 3dstuff, but it will be a lot of work for a really rainy day

This commit is contained in:
zeromus 2015-11-08 22:59:57 -06:00
parent 2bf48e3c86
commit 892a3fbf76
2 changed files with 47 additions and 67 deletions
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106
BizHawk.Emulation.Cores/Libretro/LibRetro.cs
View File

@ -337,6 +337,47 @@ namespace BizHawk.Emulation.Cores
EXPERIMENTAL = 0x10000
};
public enum retro_hw_context_type
{
RETRO_HW_CONTEXT_NONE = 0,
RETRO_HW_CONTEXT_OPENGL = 1,
RETRO_HW_CONTEXT_OPENGLES2 = 2,
RETRO_HW_CONTEXT_OPENGL_CORE = 3,
RETRO_HW_CONTEXT_OPENGLES3 = 4,
RETRO_HW_CONTEXT_OPENGLES_VERSION = 5,
RETRO_HW_CONTEXT_DUMMY = Int32.MaxValue
};
public struct retro_hw_render_callback
{
public uint context_type; //retro_hw_context_type
public IntPtr context_reset; //retro_hw_context_reset_t
public IntPtr get_current_framebuffer; //retro_hw_get_current_framebuffer_t
public IntPtr get_proc_address; //retro_hw_get_proc_address_t
[MarshalAs(UnmanagedType.U1)] public byte depth;
[MarshalAs(UnmanagedType.U1)] public bool stencil;
[MarshalAs(UnmanagedType.U1)] public bool bottom_left_origin;
public uint version_major;
public uint version_minor;
[MarshalAs(UnmanagedType.U1)] public bool cache_context;
public IntPtr context_destroy; //retro_hw_context_reset_t
[MarshalAs(UnmanagedType.U1)] public bool debug_context;
};
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
public delegate long retro_hw_context_reset_t();
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
public delegate IntPtr retro_hw_get_current_framebuffer_t();
//not used
//[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
//public delegate void retro_proc_address_t();
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
public delegate IntPtr retro_hw_get_proc_address_t(string sym);
struct retro_memory_map
{
public IntPtr descriptors; //retro_memory_descriptor *
@ -346,77 +387,12 @@ namespace BizHawk.Emulation.Cores
struct retro_memory_descriptor
{
ulong flags;
/* Pointer to the start of the relevant ROM or RAM chip.
* It's strongly recommended to use 'offset' if possible, rather than
* doing math on the pointer.
*
* If the same byte is mapped my multiple descriptors, their descriptors
* must have the same pointer.
* If 'start' does not point to the first byte in the pointer, put the
* difference in 'offset' instead.
*
* May be NULL if there's nothing usable here (e.g. hardware registers and
* open bus). No flags should be set if the pointer is NULL.
* It's recommended to minimize the number of descriptors if possible,
* but not mandatory. */
IntPtr ptr;
IntPtr offset; //size_t
/* This is the location in the emulated address space
* where the mapping starts. */
IntPtr start; //size_t
/* Which bits must be same as in 'start' for this mapping to apply.
* The first memory descriptor to claim a certain byte is the one
* that applies.
* A bit which is set in 'start' must also be set in this.
* Can be zero, in which case each byte is assumed mapped exactly once.
* In this case, 'len' must be a power of two. */
IntPtr select; //size_t
/* If this is nonzero, the set bits are assumed not connected to the
* memory chip's address pins. */
IntPtr disconnect; //size_t
/* This one tells the size of the current memory area.
* If, after start+disconnect are applied, the address is higher than
* this, the highest bit of the address is cleared.
*
* If the address is still too high, the next highest bit is cleared.
* Can be zero, in which case it's assumed to be infinite (as limited
* by 'select' and 'disconnect'). */
IntPtr len; //size_t
/* To go from emulated address to physical address, the following
* order applies:
* Subtract 'start', pick off 'disconnect', apply 'len', add 'offset'.
*
* The address space name must consist of only a-zA-Z0-9_-,
* should be as short as feasible (maximum length is 8 plus the NUL),
* and may not be any other address space plus one or more 0-9A-F
* at the end.
* However, multiple memory descriptors for the same address space is
* allowed, and the address space name can be empty. NULL is treated
* as empty.
*
* Address space names are case sensitive, but avoid lowercase if possible.
* The same pointer may exist in multiple address spaces.
*
* Examples:
* blank+blank - valid (multiple things may be mapped in the same namespace)
* 'Sp'+'Sp' - valid (multiple things may be mapped in the same namespace)
* 'A'+'B' - valid (neither is a prefix of each other)
* 'S'+blank - valid ('S' is not in 0-9A-F)
* 'a'+blank - valid ('a' is not in 0-9A-F)
* 'a'+'A' - valid (neither is a prefix of each other)
* 'AR'+blank - valid ('R' is not in 0-9A-F)
* 'ARB'+blank - valid (the B can't be part of the address either, because
* there is no namespace 'AR')
* blank+'B' - not valid, because it's ambigous which address space B1234
* would refer to.
* The length can't be used for that purpose; the frontend may want
* to append arbitrary data to an address, without a separator. */
string addrspace;
};

8
BizHawk.Emulation.Cores/Libretro/LibRetroEmulator.cs
View File

@ -154,8 +154,12 @@ namespace BizHawk.Emulation.Cores
case LibRetro.RETRO_ENVIRONMENT.SET_DISK_CONTROL_INTERFACE:
return false;
case LibRetro.RETRO_ENVIRONMENT.SET_HW_RENDER:
// this can be done in principle, but there's no reason to right now
return false;
{
//mupen64plus needs this, as well as 3dengine
LibRetro.retro_hw_render_callback* info = (LibRetro.retro_hw_render_callback*)data.ToPointer();
Console.WriteLine("SET_HW_RENDER: {0}, version={1}.{2}, dbg/cache={3}/{4}, depth/stencil = {5}/{6}{7}", info->context_type, info->version_minor, info->version_major, info->debug_context, info->cache_context, info->depth, info->stencil, info->bottom_left_origin ? " (bottomleft)" : "");
return true;
}
case LibRetro.RETRO_ENVIRONMENT.GET_VARIABLE:
{
void** variables = (void**)data.ToPointer();