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GSdx-hw: SwSpriteRender, implement all ALPHA.C.

This commit is contained in:
Alessandro Vetere 2019-08-10 14:14:26 +02:00 committed by lightningterror
parent d648755d75
commit 09116d8964
1 changed files with 15 additions and 9 deletions
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24
plugins/GSdx/Renderers/HW/GSRendererHW.cpp
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@ -813,6 +813,8 @@ void GSRendererHW::SwSpriteRender()
uint8 tex0_tcc = m_context->TEX0.TCC;
uint8 alpha_b = m_context->ALPHA.B;
uint8 alpha_c = m_context->ALPHA.C;
uint8 alpha_fix = m_context->ALPHA.FIX;
for (int y = 0; y < h; y++, ++sy, ++dy)
{
@ -856,23 +858,27 @@ void GSRendererHW::SwSpriteRender()
// Blending
ASSERT(m_context->ALPHA.A == 0);
ASSERT(alpha_b == 1 || alpha_b == 2);
ASSERT(m_context->ALPHA.C == 0);
ASSERT(m_context->ALPHA.D == 1);
ASSERT(m_context->ALPHA.FIX == 0);
GSVector4i sc_alpha_vec =
sc.yyww() // 0x00AA00BB00AA00BB00aa00bb00aa00bb
.srl32(16) // 0x000000AA000000AA000000aa000000aa
.ps32() // 0x00AA00AA00aa00aa00AA00AA00aa00aa
.xxyy(); // 0x00AA00AA00AA00AA00aa00aa00aa00aa
// Flag C
GSVector4i sc_alpha_vec;
if (alpha_c == 2)
sc_alpha_vec = GSVector4i(alpha_fix).xxxx().ps32();
else
sc_alpha_vec = (alpha_c == 0 ? sc : dc0)
.yyww() // 0x00AA00BB00AA00BB00aa00bb00aa00bb
.srl32(16) // 0x000000AA000000AA000000aa000000aa
.ps32() // 0x00AA00AA00aa00aa00AA00AA00aa00aa
.xxyy(); // 0x00AA00AA00AA00AA00aa00aa00aa00aa
switch (alpha_b)
{
case 1:
dc = sc.sub16(dc0).mul16l(sc_alpha_vec).sra16(7).add16(dc0); // (((Cs - Cd) * As) >> 7) + Cd, must use sra16 due to signed 16 bit values
dc = sc.sub16(dc0).mul16l(sc_alpha_vec).sra16(7).add16(dc0); // (((Cs - Cd) * C) >> 7) + Cd, must use sra16 due to signed 16 bit values
break;
default:
dc = sc.mul16l(sc_alpha_vec).sra16(7).add16(dc0); // (((Cs - 0) * As) >> 7) + Cd, must use sra16 due to signed 16 bit values
dc = sc.mul16l(sc_alpha_vec).sra16(7).add16(dc0); // (((Cs - 0) * C) >> 7) + Cd, must use sra16 due to signed 16 bit values
break;
}
// dc alpha channels (dc.u16[3], dc.u16[7]) dirty