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Do special handling of texture coordinate generation if there is only a position and texture coordinate present.

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git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@4801 8ced0084-cf51-0410-be5f-012b33b47a6e
This commit is contained in:
donkopunchstania 2010-01-11 00:44:40 +00:00
commit a19be73be3
5 changed files with 73 additions and 30 deletions
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36
Source/Core/VideoCommon/Src/VertexShaderGen.cpp
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@ -22,6 +22,7 @@
#include "NativeVertexFormat.h"
#include "BPMemory.h"
#include "CPMemory.h"
#include "VertexShaderGen.h"
VERTEXSHADERUID last_vertex_shader_uid;
@ -323,6 +324,12 @@ const char *GenerateVertexShader(u32 components, bool D3D)
for (int i = xfregs.nNumChans; i < 2; ++i)
WRITE(p, "o.colors[%d] = float4(0.0f,0.0f,0.0f,0.0f);\n", i);
// special case if only pos and tex coord 0 and tex coord input is AB11
bool texGenSpecialCase =
((g_VtxDesc.Hex & 0x60600L) == g_VtxDesc.Hex) && // only pos and tex coord 0
(g_VtxDesc.Tex0Coord != NOT_PRESENT) &&
(xfregs.texcoords[0].texmtxinfo.inputform == XF_TEXINPUT_AB11);
// transform texcoords
for (int i = 0; i < xfregs.numTexGens; ++i) {
TexMtxInfo& texinfo = xfregs.texcoords[i].texmtxinfo;
@ -404,16 +411,27 @@ const char *GenerateVertexShader(u32 components, bool D3D)
}
if(xfregs.bEnableDualTexTransform && texinfo.texgentype == XF_TEXGEN_REGULAR) { // only works for regular tex gen types?
if (xfregs.texcoords[i].postmtxinfo.normalize)
WRITE(p, "o.tex%d.xyz = normalize(o.tex%d.xyz);\n", i, i);
int postidx = xfregs.texcoords[i].postmtxinfo.index;
WRITE(p, "float4 P0 = "I_POSTTRANSFORMMATRICES".T[%d].t;\n"
"float4 P1 = "I_POSTTRANSFORMMATRICES".T[%d].t;\n"
"float4 P2 = "I_POSTTRANSFORMMATRICES".T[%d].t;\n",
postidx&0x3f, (postidx+1)&0x3f, (postidx+2)&0x3f);
//multiply by postmatrix
int postidx = xfregs.texcoords[i].postmtxinfo.index;
WRITE(p, "float4 P0 = "I_POSTTRANSFORMMATRICES".T[%d].t;\n"
"float4 P1 = "I_POSTTRANSFORMMATRICES".T[%d].t;\n"
"float4 P2 = "I_POSTTRANSFORMMATRICES".T[%d].t;\n",
postidx&0x3f, (postidx+1)&0x3f, (postidx+2)&0x3f);
WRITE(p, "o.tex%d.xyz = float3(dot(P0.xyz, o.tex%d.xyz) + P0.w, dot(P1.xyz, o.tex%d.xyz) + P1.w, dot(P2.xyz, o.tex%d.xyz) + P2.w);\n", i, i, i, i);
if (texGenSpecialCase) {
// no normalization
// q of input is 1
// q of output is unknown
//multiply by postmatrix
WRITE(p, "o.tex%d.xyz = float3(dot(P0.xy, o.tex%d.xy) + P0.z + P0.w, dot(P1.xy, o.tex%d.xy) + P1.z + P1.w, 0.0f);\n", i, i, i);
}
else {
if (xfregs.texcoords[i].postmtxinfo.normalize)
WRITE(p, "o.tex%d.xyz = normalize(o.tex%d.xyz);\n", i, i);
//multiply by postmatrix
WRITE(p, "o.tex%d.xyz = float3(dot(P0.xyz, o.tex%d.xyz) + P0.w, dot(P1.xyz, o.tex%d.xyz) + P1.w, dot(P2.xyz, o.tex%d.xyz) + P2.w);\n", i, i, i, i);
}
}
WRITE(p, "}\n");