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Integer version of glReadBuffer with GL_DEPTH_COMPONENT...

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reported were errors with ati-linux on using float here.

Code is still there, and can be easily switched back (  if(0) or if(1) !)
This commit is contained in:
Ton Roosendaal 2004-09-25 16:38:51 +00:00
parent 9118fbd855
commit 8655cc40ad
1 changed files with 11 additions and 3 deletions
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14
source/blender/src/editmesh_mods.c
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@ -132,10 +132,18 @@ int EM_zbuffer_visible(float *co, short xs, short ys)
Mat4MulVec4fl(persmat, vec4);
vec4[2]/= vec4[3];
vec4[2]= 0.5 + vec4[2]/2;
if(1) {
unsigned int zvali;
glReadPixels(curarea->winrct.xmin+xs, curarea->winrct.ymin+ys, 1, 1, GL_DEPTH_COMPONENT, GL_UNSIGNED_INT, &zvali);
zval= ((float)zvali)/((float)0xFFFFFFFF);
// printf("my proj %f zbuf %x %f mydiff %f\n", vec4[2], zvali, zval, vec4[2]-zval);
}
else {
glReadPixels(curarea->winrct.xmin+xs, curarea->winrct.ymin+ys, 1, 1, GL_DEPTH_COMPONENT, GL_FLOAT, &zval);
// printf("my proj %f zbuf %f mydiff %f\n", vec4[2], zval, vec4[2]-zval);
}
glReadPixels(curarea->winrct.xmin+xs, curarea->winrct.ymin+ys, 1, 1, GL_DEPTH_COMPONENT, GL_FLOAT, &zval);
// printf("my proj %f zbuf %f mydiff %f\n", vec4[2], zval, vec4[2]-zval);
if( vec4[2] > zval) return 0;
return 1;
}