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Merge branch 'zcomploc-support' 

zcomploc is a feature of the GC/Wii GPU used to perform some depth operations.
It was previously not implemented in Dolphin. This commit adds support for it.

List of games fixed by this commit:

* 007: Everything or Nothing (Skybox in front of the map/models)
* Baten Kaitos (characters displayed in front of background objects)
* Tony Hawk's Pro Skater 3 (invisible skater)
* Ty the Tasmanian Tiger (floating floor)
* Super Smash Bros Brawl ("Link chasing pig" animation behind the score screen)

Fixes issue 4841.
This commit is contained in:
Pierre Bourdon 2012-03-24 20:49:39 +01:00
parent 7a1744575d c662b8ee2f
commit 0f2d31e727
2 changed files with 27 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
Source/Core/Common/Src/LinearDiskCache.h
View File

@ -24,7 +24,7 @@
// Increment this every time you change shader generation code.
enum
{
LINEAR_DISKCACHE_VER = 6973
LINEAR_DISKCACHE_VER = 6974
};
// On disk format:

29
Source/Core/VideoCommon/Src/PixelShaderGen.cpp
View File

@ -1181,10 +1181,31 @@ static bool WriteAlphaTest(char *&p, API_TYPE ApiType,DSTALPHA_MODE dstAlphaMode
compindex = bpmem.alphaFunc.comp1 % 8;
WRITE(p, tevAlphaFuncsTable[compindex],alphaRef[1]);//lookup the second component from the alpha function table
WRITE(p, ")){ocol0 = 0;%s%s discard;%s}\n",
dstAlphaMode == DSTALPHA_DUAL_SOURCE_BLEND ? "ocol1 = 0;" : "",
DepthTextureEnable ? "depth = 1.f;" : "",
(ApiType != API_D3D11) ? "return;" : "");
WRITE(p, ")) {\n");
WRITE(p, "ocol0 = 0;\n");
if (dstAlphaMode == DSTALPHA_DUAL_SOURCE_BLEND)
WRITE(p, "ocol1 = 0;\n");
if (DepthTextureEnable)
WRITE(p, "depth = 1.f;\n");
// HAXX: zcomploc is a way to control whether depth test is done before
// or after texturing and alpha test. PC GPU have no way to support this
// feature properly as of 2012: depth buffer and depth test are not
// programmable and the depth test is always done after texturing.
//
// We implement "depth test before texturing" by discarding the fragment
// when the alpha test fail. This is not a correct implementation because
// even if the depth test fails the fragment could be alpha blended, but
// we don't have a choice.
if (!(bpmem.zcontrol.zcomploc && bpmem.zmode.updateenable))
{
WRITE(p, "discard;\n");
if (ApiType != API_D3D11)
WRITE(p, "return;\n");
}
WRITE(p, "}\n");
return true;
}