Databases
StackOverflow2013
Postsdbo
POStrange black pixels on model
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POStrange black pixels on model
    primarykey
    data
    text
    <p>I tried to draw a model with 197 polygons but i have strange black pixels on it: </p> <p><a href="http://i.imagehost.org/0398/IMG_0172.png" rel="nofollow noreferrer">alt text http://i.imagehost.org/0398/IMG_0172.png</a></p> <p>When I run the code in the iPhone Simulator, it shows well without those black pixels, but on the device I have that problem.</p> <p>I set perspective:</p> <pre><code>const GLfloat zNear = 0.01, zFar = 1000.0, fieldOfView = 45.0; GLfloat size; glEnable(GL_DEPTH_TEST); glMatrixMode(GL_PROJECTION); size = zNear * tanf(DEGREES_TO_RADIANS(fieldOfView) / 2.0); CGRect rect = self.bounds; glFrustumf(-size, size, -size / (rect.size.width / rect.size.height), size / (rect.size.width / rect.size.height), zNear, zFar); glViewport(0, 0, rect.size.width, rect.size.height); glMatrixMode(GL_MODELVIEW); glLoadIdentity(); glClearColor(0.3f, 0.3f, 0.3f, 1.0f); glColor4f(0,0,0,0.5f); glEnable(GL_SMOOTH); glEnable(GL_LIGHTING); glEnable(GL_LIGHT0); glEnableClientState(GL_VERTEX_ARRAY); </code></pre> <p>And draw (model vertices, indexes and normals store in global arrays.):</p> <pre><code>glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT); [EAGLContext setCurrentContext:context]; glBindFramebufferOES(GL_FRAMEBUFFER_OES, viewFramebuffer); glTranslatef(1.0, -9, -22); glVertexPointer(3, GL_FLOAT, 0, vertices); glEnableClientState(GL_NORMAL_ARRAY); glNormalPointer(GL_FLOAT, 0, normals); glDrawElements(GL_TRIANGLES, 3*192, GL_UNSIGNED_BYTE, icosahedronFaces); glDisableClientState(GL_NORMAL_ARRAY); glTranslatef(-1.0, 9, 22); glBindRenderbufferOES(GL_RENDERBUFFER_OES, viewRenderbuffer); [context presentRenderbuffer:GL_RENDERBUFFER_OES]; </code></pre>
    singulars
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. USAlexey
    1. USAlexey
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    2. PO
      singulars
      1. PTAnswer
    1. VO
      singulars
      1. POStrange black pixels on model
      1. This table or related slice is empty.
      1. VTUpMod
    1. This table or related slice is empty.
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload