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things are a lot less broken if we assume shaders preform the perspective divide...

This commit is contained in:
espes 2013-11-22 16:49:29 +11:00
parent c769f3de88
commit 7792a89829
1 changed files with 5 additions and 4 deletions
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9
hw/xbox/nv2a_vsh.c
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@ -682,7 +682,8 @@ QString* vsh_translate(uint16_t version,
"RCP R1.z, R1.z;\n"
"MUL R12.xyz, R12, R1;\n"
"MOV R12.w, 1;\n"
/* Z coord [0;1]->[-1;1] mapping, see comment in transform_projection
* in state.c
*
@ -691,9 +692,9 @@ QString* vsh_translate(uint16_t version,
* into account: z = ((z / w) * 2 - 1) * w, which is the same as
* z = z * 2 - w.
*/
"# Apply Z coord mapping\n"
"ADD R12.z, R12.z, R12.z;\n"
"ADD R12.z, R12.z, -R12.w;\n"
//"# Apply Z coord mapping\n"
//"ADD R12.z, R12.z, R12.z;\n"
//"ADD R12.z, R12.z, -R12.w;\n"
"# End of shader:\n"
"MOV oPos, R12;\n"