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Try to do Z textures better. Z texturing does not work if early z or no z update. Corrected the Z texture bias used on 8 and 16 bit textures.

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git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@4596 8ced0084-cf51-0410-be5f-012b33b47a6e
This commit is contained in:
donkopunchstania
2009-11-21 02:49:46 +00:00
parent c9f5521d26
commit 6e7395cef1
3 changed files with 27 additions and 22 deletions
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23
Source/Core/VideoCommon/Src/PixelShaderGen.cpp
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@ -58,8 +58,11 @@ void GetPixelShaderId(PIXELSHADERUID &uid, u32 texturemask, u32 dstAlphaEnable)
uid.values[2] = texturemask;
u32 enableZTexture = (!bpmem.zcontrol.zcomploc && bpmem.zmode.testenable && bpmem.zmode.updateenable)?1:0;
uid.values[3] = (u32)bpmem.fog.c_proj_fsel.fsel |
((u32)bpmem.fog.c_proj_fsel.proj << 3);
((u32)bpmem.fog.c_proj_fsel.proj << 3) |
((u32)enableZTexture << 4);
int hdr = 4;
u32* pcurvalue = &uid.values[hdr];
@ -522,11 +525,19 @@ const char *GeneratePixelShader(u32 texture_mask, bool dstAlphaEnable, u32 HLSL)
// the screen space depth value = far z + (clip z / clip w) * z range
WRITE(p, "float zCoord = "I_ZBIAS"[1].x + (clipPos.z / clipPos.w) * "I_ZBIAS"[1].y;\n");
// use the texture input of the last texture stage (textemp), hopefully this has been read and is in correct format...
if (bpmem.ztex2.op == ZTEXTURE_ADD)
WRITE(p, "zCoord = frac(dot("I_ZBIAS"[0].xyzw, textemp.xyzw) + "I_ZBIAS"[1].w + zCoord);\n");
else if (bpmem.ztex2.op == ZTEXTURE_REPLACE)
WRITE(p, "zCoord = frac(dot("I_ZBIAS"[0].xyzw, textemp.xyzw) + "I_ZBIAS"[1].w);\n");
if (bpmem.ztex2.op != ZTEXTURE_DISABLE && !bpmem.zcontrol.zcomploc && bpmem.zmode.testenable && bpmem.zmode.updateenable)
{
// use the texture input of the last texture stage (textemp), hopefully this has been read and is in correct format...
if (bpmem.ztex2.op == ZTEXTURE_ADD)
WRITE(p, "zCoord = dot("I_ZBIAS"[0].xyzw, textemp.xyzw) + "I_ZBIAS"[1].w + zCoord;\n");
else
WRITE(p, "zCoord = dot("I_ZBIAS"[0].xyzw, textemp.xyzw) + "I_ZBIAS"[1].w;\n");
// scale to make result from frac correct
WRITE(p, "zCoord = zCoord * (16777215.0f/16777216.0f);\n");
WRITE(p, "zCoord = frac(zCoord);\n");
WRITE(p, "zCoord = zCoord * (16777216.0f/16777215.0f);\n");
}
WRITE(p, "depth = zCoord;\n");