116 lines
2.5 KiB
C
116 lines
2.5 KiB
C
#include "context.h"
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#include <string.h>
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// Return bits per pixel
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static inline size_t fmtSize(GPU_TEXCOLOR fmt)
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{
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switch (fmt)
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{
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case GPU_RGBA8:
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return 32;
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case GPU_RGB8:
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return 24;
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case GPU_RGBA5551:
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case GPU_RGB565:
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case GPU_RGBA4:
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case GPU_LA8:
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case GPU_HILO8:
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return 16;
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case GPU_L8:
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case GPU_A8:
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case GPU_LA4:
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case GPU_ETC1A4:
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return 8;
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case GPU_L4:
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case GPU_A4:
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case GPU_ETC1:
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return 4;
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default:
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return 0;
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}
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}
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static inline bool addrIsVRAM(const void* addr)
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{
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u32 vaddr = (u32)addr;
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return vaddr >= 0x1F000000 && vaddr < 0x1F600000;
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}
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static bool C3Di_TexInitCommon(C3D_Tex* tex, int width, int height, GPU_TEXCOLOR format, void* (*texAlloc)(size_t))
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{
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if (tex->data) return false;
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u32 size = fmtSize(format);
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if (!size) return false;
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size *= width * height / 8;
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tex->data = texAlloc(size);
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if (!tex->data) return false;
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tex->width = width;
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tex->height = height;
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tex->param = GPU_TEXTURE_MAG_FILTER(GPU_NEAREST) | GPU_TEXTURE_MIN_FILTER(GPU_NEAREST);
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if (format == GPU_ETC1)
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tex->param |= GPU_TEXTURE_ETC1_PARAM;
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tex->fmt = format;
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tex->size = size;
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return true;
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}
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bool C3D_TexInit(C3D_Tex* tex, int width, int height, GPU_TEXCOLOR format)
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{
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return C3Di_TexInitCommon(tex, width, height, format, linearAlloc);
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}
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bool C3D_TexInitVRAM(C3D_Tex* tex, int width, int height, GPU_TEXCOLOR format)
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{
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return C3Di_TexInitCommon(tex, width, height, format, vramAlloc);
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}
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void C3D_TexUpload(C3D_Tex* tex, const void* data)
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{
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if (tex->data && !addrIsVRAM(tex->data))
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memcpy(tex->data, data, tex->size);
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}
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void C3D_TexSetFilter(C3D_Tex* tex, GPU_TEXTURE_FILTER_PARAM magFilter, GPU_TEXTURE_FILTER_PARAM minFilter)
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{
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tex->param &= ~(GPU_TEXTURE_MAG_FILTER(GPU_LINEAR) | GPU_TEXTURE_MIN_FILTER(GPU_LINEAR));
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tex->param |= GPU_TEXTURE_MAG_FILTER(magFilter) | GPU_TEXTURE_MIN_FILTER(minFilter);
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}
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void C3D_TexSetWrap(C3D_Tex* tex, GPU_TEXTURE_WRAP_PARAM wrapS, GPU_TEXTURE_WRAP_PARAM wrapT)
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{
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tex->param &= ~(GPU_TEXTURE_WRAP_S(3) | GPU_TEXTURE_WRAP_T(3));
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tex->param |= GPU_TEXTURE_WRAP_S(wrapS) | GPU_TEXTURE_WRAP_T(wrapT);
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}
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void C3D_TexBind(int unitId, C3D_Tex* tex)
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{
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C3D_Context* ctx = C3Di_GetContext();
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if (!(ctx->flags & C3DiF_Active))
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return;
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ctx->flags |= C3DiF_Tex(unitId);
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ctx->tex[unitId] = tex;
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}
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void C3D_TexFlush(C3D_Tex* tex)
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{
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if (tex->data && !addrIsVRAM(tex->data))
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GSPGPU_FlushDataCache(tex->data, tex->size);
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}
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void C3D_TexDelete(C3D_Tex* tex)
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{
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if (!tex->data) return;
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if (addrIsVRAM(tex->data))
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vramFree(tex->data);
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else
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linearFree(tex->data);
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tex->data = NULL;
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}
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