attribs.c

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#include "internal.h"
#include <c3d/attribs.h>
 
void AttrInfo_Init(C3D_AttrInfo* info)
{
    memset(info, 0, sizeof(*info));
    info->flags[1] = 0xFFF << 16;
}
 
int AttrInfo_AddLoader(C3D_AttrInfo* info, int regId, GPU_FORMATS format, int count)
{
    if (info->attrCount == 12) return -1;
    int id = info->attrCount++;
    if (regId < 0) regId = id;
    if (id < 8)
        info->flags[0] |= GPU_ATTRIBFMT(id, count, format);
    else
        info->flags[1] |= GPU_ATTRIBFMT(id-8, count, format);
 
    info->flags[1] = (info->flags[1] &~ (0xF0000000 | BIT(id+16))) | (id << 28);
    info->permutation |= regId << (id*4);
    return id;
}
 
int AttrInfo_AddFixed(C3D_AttrInfo* info, int regId)
{
    if (info->attrCount == 12) return -1;
    int id = info->attrCount++;
    if (regId < 0) regId = id;
 
    info->flags[1] = (info->flags[1] &~ 0xF0000000) | (id << 28);
    info->permutation |= regId << (id*4);
    return id;
}
 
C3D_AttrInfo* C3D_GetAttrInfo(void)
{
    C3D_Context* ctx = C3Di_GetContext();
 
    if (!(ctx->flags & C3DiF_Active))
        return NULL;
 
    ctx->flags |= C3DiF_AttrInfo;
    return &ctx->attrInfo;
}
 
void C3D_SetAttrInfo(C3D_AttrInfo* info)
{
    C3D_Context* ctx = C3Di_GetContext();
 
    if (!(ctx->flags & C3DiF_Active))
        return;
 
    if (info != &ctx->attrInfo)
        memcpy(&ctx->attrInfo, info, sizeof(*info));
    ctx->flags |= C3DiF_AttrInfo;
}
 
void C3Di_AttrInfoBind(C3D_AttrInfo* info)
{
    GPUCMD_AddIncrementalWrites(GPUREG_ATTRIBBUFFERS_FORMAT_LOW, (u32*)info->flags, sizeof(info->flags)/sizeof(u32));
    GPUCMD_AddMaskedWrite(GPUREG_VSH_INPUTBUFFER_CONFIG, 0xB, 0xA0000000 | (info->attrCount - 1));
    GPUCMD_AddWrite(GPUREG_VSH_NUM_ATTR, info->attrCount - 1);
    GPUCMD_AddIncrementalWrites(GPUREG_VSH_ATTRIBUTES_PERMUTATION_LOW, (u32*)&info->permutation, 2);
}