HD77620: GSD: THE RESULT OF THE DRAFT ANALYSIS IS DIFFERENT FOR EACH GRA PHIC CARD

APAR status

• Closed as Permanent restriction.

Error description

• GSD: The result of the Draft Analysis is different
  for each Graphic Card
  .
  Preparation:
  Set option : Highlight faces and edges : OFF
  .
  Scenario:
  1. Open the "XXX.CATPart" (Open attached part)
  2. Click on the "Shading with material" icon.
  3. Click on the "Draft Analysis" and select Face.
  Problem: The result is different for each Graphic
  Card
  .
  Expected Result:
  The result should be same even if Graphic Card is
  different.
  .
  

Local fix

Problem summary

• GSD: The result of the Draft Analysis is different for each Gra
  phic Card
  GSD: The result of the Draft Analysis is different
  for each Graphic Card
  .
  Preparation:
  Set option : Highlight faces and edges : OFF
  .
  Scenario:
  1. Open the "XXX.CATPart" (Open attached part)
  2. Click on the "Shading with material" icon.
  3. Click on the "Draft Analysis" and select Face.
  Problem: The result is different for each Graphic
  Card
  .
  Expected Result:
  The result should be same even if Graphic Card is
  different.
  .
  

Problem conclusion

• THIS PROBLEM IS PERMANENT RESTRICTION IN
  CATIA
  Incident Diagnosis
  The result of the draft analysis is different between
  FX1400 and FX1700.
  .
  Restriction Explanation
  FX1700 is a more powerful card than FX1400. It
  can manage a maximum texture image of 8192
  pixels whereas the maximum texture size is 4096
  pixels with FX1400. Since the precision of the
  command is related to the maximum texture size
  (the bigger, the more precise), draft analysis with
  FX1700 is more precise than with a FX1400.
  Since FX1700 is more precise than FX1400, it
  cannot give the same result otherwise it would
  logically not be more precise.
  .
  Draft Analysis was always presented as having a
  precision of 0.1deg and it is even written in the
  documentation.
  .
  So for the example of the face that has a draft
  angle of 0, the analysis will give a result between -
  0.1 and +0.1 so it can be red or blue.
  .
  By-Pass
  If the user wants to be sure that a face is greater
  than 0, the limit can be modified to 0.1.
  .
  Turn the shader mode ON by checking
  Tools/Options/Display/Performance/Enable OpenGL
  Shader This mode does not use a texture image so
  it will not be impacted if 2 cards have different
  maximum texture size.
  .
  

Temporary fix

Comments

APAR Information

• APAR is sysrouted FROM one or more of the following:

• APAR is sysrouted TO one or more of the following:

Fix information

Applicable component levels