texenv.c

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#include "internal.h"
 
C3D_TexEnv* C3D_GetTexEnv(int id)
{
    C3D_Context* ctx = C3Di_GetContext();
 
    if (!(ctx->flags & C3DiF_Active))
        return NULL;
 
    ctx->flags |= C3DiF_TexEnv(id);
    return &ctx->texEnv[id];
}
 
void C3D_SetTexEnv(int id, C3D_TexEnv* env)
{
    C3D_Context* ctx = C3Di_GetContext();
 
    if (!(ctx->flags & C3DiF_Active))
        return;
 
    ctx->flags |= C3DiF_TexEnv(id);
    if (env)
        memcpy(&ctx->texEnv[id], env, sizeof(*env));
    else
        C3D_TexEnvInit(&ctx->texEnv[id]);
}
 
void C3D_DirtyTexEnv(C3D_TexEnv* env)
{
    C3D_Context* ctx = C3Di_GetContext();
 
    if (!(ctx->flags & C3DiF_Active))
        return;
 
    u32 id = env-ctx->texEnv;
    if (id < 6)
        ctx->flags |= C3DiF_TexEnv(id);
}
 
void C3Di_TexEnvBind(int id, C3D_TexEnv* env)
{
    if (id >= 4) id += 2;
    GPUCMD_AddIncrementalWrites(GPUREG_TEXENV0_SOURCE + id*8, (u32*)env, sizeof(C3D_TexEnv)/sizeof(u32));
}
 
void C3D_TexEnvBufUpdate(int mode, int mask)
{
    C3D_Context* ctx = C3Di_GetContext();
 
    if (!(ctx->flags & C3DiF_Active))
        return;
 
    u32 val = ctx->texEnvBuf;
    mask &= 0xF;
 
    if (mode & C3D_RGB)
    {
        val &= ~(0xF << 8);
        val |= mask << 8;
    }
 
    if (mode & C3D_Alpha)
    {
        val &= ~(0xF << 12);
        val |= mask << 12;
    }
 
    ctx->texEnvBuf = val;
    ctx->flags |= C3DiF_TexEnvBuf;
}
 
void C3D_TexEnvBufColor(u32 color)
{
    C3D_Context* ctx = C3Di_GetContext();
 
    if (!(ctx->flags & C3DiF_Active))
        return;
 
    ctx->texEnvBufClr = color;
    ctx->flags |= C3DiF_TexEnvBuf;
}