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probably a more correct way to handle vsh output

This commit is contained in:
espes 2014-05-30 00:01:06 +10:00
parent 0772f947c9
commit c4e3b0fe62
1 changed files with 9 additions and 2 deletions
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11
hw/xbox/nv2a_vsh.c
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@ -778,11 +778,18 @@ QString* vsh_translate(uint16_t version,
* but they're not necessarily present...
*/
" /* Un-screenspace transform */\n"
" /* Un-screenspace transform */\n"
"oPos.x = (oPos.x - viewportOffset.x) / viewportScale.x;\n"
"oPos.y = (oPos.y - viewportOffset.y) / viewportScale.y;\n"
"oPos.z = (oPos.z - 0.5 * (clipRange.x + clipRange.y)) / (0.5 * (clipRange.y - clipRange.x));\n"
"oPos.w = sign(oPos.w);\n"
"if (oPos.w <= 0.0) {\n"
/* undo the perspective divide in the case where the point would be
* clipped so opengl can clip it correctly */
" oPos.xyz *= oPos.w;\n"
"} else {\n"
" oPos.w = 1.0;\n"
"}\n"
" /* Set outputs */\n"
" gl_Position = oPos;\n"