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Add the discussed four lines to disable blending and enable backface culling.

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This commit is contained in:
Andrzej Kapolka 2013-05-20 11:32:32 -07:00
parent 85bca558f5
commit 0f2f4ee8f9
1 changed files with 7 additions and 0 deletions
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7
interface/src/VoxelSystem.cpp
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@ -638,11 +638,18 @@ void VoxelSystem::render() {
_perlinModulateProgram->bind(); _perlinModulateProgram->bind();
glBindTexture(GL_TEXTURE_2D, _permutationNormalTextureID); glBindTexture(GL_TEXTURE_2D, _permutationNormalTextureID);
// for performance, disable blending and enable backface culling
glDisable(GL_BLEND);
glEnable(GL_CULL_FACE);
// draw the number of voxels we have // draw the number of voxels we have
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, _vboIndicesID); glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, _vboIndicesID);
glScalef(TREE_SCALE, TREE_SCALE, TREE_SCALE); glScalef(TREE_SCALE, TREE_SCALE, TREE_SCALE);
glDrawElements(GL_TRIANGLES, 36 * _voxelsInReadArrays, GL_UNSIGNED_INT, 0); glDrawElements(GL_TRIANGLES, 36 * _voxelsInReadArrays, GL_UNSIGNED_INT, 0);
glEnable(GL_BLEND);
glDisable(GL_CULL_FACE);
_perlinModulateProgram->release(); _perlinModulateProgram->release();
glBindTexture(GL_TEXTURE_2D, 0); glBindTexture(GL_TEXTURE_2D, 0);