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Improve VBO rendering efficiency #1207

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Improve VBO rendering efficiency #1207

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13 changes: 7 additions & 6 deletions Cura/gui/util/openglHelpers.py
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Original file line number Diff line number Diff line change
Expand Up @@ -178,10 +178,11 @@ def __init__(self, renderType, vertexArray, normalArray = None, indicesArray = N

def render(self):
glEnableClientState(GL_VERTEX_ARRAY)
if self._hasNormals:
glEnableClientState(GL_NORMAL_ARRAY)
if self._buffers is None:
glVertexPointer(3, GL_FLOAT, 0, self._vertexArray)
if self._hasNormals:
glEnableClientState(GL_NORMAL_ARRAY)
glNormalPointer(GL_FLOAT, 0, self._normalArray)
if self._hasIndices:
glDrawElements(self._renderType, self._size, GL_UNSIGNED_INT, self._indicesArray)
Expand All @@ -193,23 +194,23 @@ def render(self):
glDrawArrays(self._renderType, i * batchSize, batchSize)
glDrawArrays(self._renderType, extraStartPos, extraCount)
else:
if self._hasIndices:
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, self._bufferIndices)
for info in self._buffers:
glBindBuffer(GL_ARRAY_BUFFER, info['buffer'])
if self._hasNormals:
glEnableClientState(GL_NORMAL_ARRAY)
glVertexPointer(3, GL_FLOAT, 2*3*4, c_void_p(0))
glNormalPointer(GL_FLOAT, 2*3*4, c_void_p(3 * 4))
else:
glVertexPointer(3, GL_FLOAT, 3*4, c_void_p(0))
if self._hasIndices:
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, self._bufferIndices)
glDrawElements(self._renderType, self._size, GL_UNSIGNED_INT, c_void_p(0))
else:
glDrawArrays(self._renderType, 0, info['size'])

glBindBuffer(GL_ARRAY_BUFFER, 0)
if self._hasIndices:
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0)
glBindBuffer(GL_ARRAY_BUFFER, 0)
if self._hasIndices:
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0)

glDisableClientState(GL_VERTEX_ARRAY)
if self._hasNormals:
Expand Down