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Vertex decoder (non-JIT): Optimize 16-bit color decoders.

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Henrik Rydgård 2024-06-04 10:35:31 +02:00
parent 5b14cf9a3d
commit 9ac7054b01
1 changed files with 16 additions and 17 deletions
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33
GPU/Common/VertexDecoderCommon.cpp
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@ -506,40 +506,39 @@ void VertexDecoder::Step_ColorInvalid() const
void VertexDecoder::Step_Color565() const
{
u8 *c = decoded_ + decFmt.c0off;
u16 cdata = *(const u16_le *)(ptr_ + coloff);
c[0] = Convert5To8(cdata & 0x1f);
c[1] = Convert6To8((cdata >> 5) & 0x3f);
c[2] = Convert5To8((cdata >> 11) & 0x1f);
c[3] = 255;
// Always full alpha.
u32 *c = (u32 *)(decoded_ + decFmt.c0off);
*c = RGB565ToRGBA8888(cdata);
}
void VertexDecoder::Step_Color5551() const
{
u8 *c = decoded_ + decFmt.c0off;
u16 cdata = *(const u16_le *)(ptr_ + coloff);
gstate_c.vertexFullAlpha = gstate_c.vertexFullAlpha && (cdata >> 15) != 0;
c[0] = Convert5To8(cdata & 0x1f);
c[1] = Convert5To8((cdata >> 5) & 0x1f);
c[2] = Convert5To8((cdata >> 10) & 0x1f);
c[3] = (cdata >> 15) ? 255 : 0;
u32 *c = (u32 *)(decoded_ + decFmt.c0off);
int alpha = (cdata >> 15);
if (!alpha) {
gstate_c.vertexFullAlpha = false;
}
*c = RGBA5551ToRGBA8888(cdata);
}
void VertexDecoder::Step_Color4444() const
{
u8 *c = decoded_ + decFmt.c0off;
u16 cdata = *(const u16_le *)(ptr_ + coloff);
gstate_c.vertexFullAlpha = gstate_c.vertexFullAlpha && (cdata >> 12) == 0xF;
for (int j = 0; j < 4; j++)
c[j] = Convert4To8((cdata >> (j * 4)) & 0xF);
u32 *c = (u32 *)(decoded_ + decFmt.c0off);
if ((cdata >> 12) != 0xF) {
gstate_c.vertexFullAlpha = false;
}
*c = RGBA4444ToRGBA8888(cdata);
}
void VertexDecoder::Step_Color8888() const
{
u8 *c = decoded_ + decFmt.c0off;
const u8 *cdata = (const u8*)(ptr_ + coloff);
gstate_c.vertexFullAlpha = gstate_c.vertexFullAlpha && cdata[3] == 255;
if (cdata[3] != 255) {
gstate_c.vertexFullAlpha = false;
}
memcpy(c, cdata, sizeof(u8) * 4);
}