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Hopefully work around an nvidia graphics driver bug in OS X.

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Some nvidia GPUs in OS X fail to render geometry that uses an OpenGL index buffer and client-side vertex arrays. This affected ParticleSystems and love.graphics.print. The code for those has been changed to use a client-side index array instead of an OpenGL index buffer.
This commit is contained in:
Alex Szpakowski
2015-12-15 21:50:38 -04:00
parent aad3c0d4d9
commit 5460a5b872
6 changed files with 68 additions and 21 deletions
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src/modules/graphics/opengl/ParticleSystem.cpp
+8 -5
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@@ -141,11 +141,14 @@ void ParticleSystem::draw(float x, float y, float angle, float sx, float sy, flo
glVertexAttribPointer(ATTRIB_POS, 2, GL_FLOAT, GL_FALSE, sizeof(Vertex), &particleVerts[0].x);
glVertexAttribPointer(ATTRIB_TEXCOORD, 2, GL_FLOAT, GL_FALSE, sizeof(Vertex), &particleVerts[0].s);
{
GLsizei count = (GLsizei) quadIndices.getIndexCount(pCount);
GLBuffer::Bind ibo_bind(*quadIndices.getBuffer());
gl.drawElements(GL_TRIANGLES, count, quadIndices.getType(), quadIndices.getPointer(0));
}
GLsizei count = (GLsizei) quadIndices.getIndexCount(pCount);
GLenum gltype = quadIndices.getType();
// We use a client-side index array instead of an Index Buffers, because
// at least one graphics driver (the one for Kepler nvidia GPUs in OS X
// 10.11) fails to render geometry if an index buffer is used with
// client-side vertex arrays.
gl.drawElements(GL_TRIANGLES, count, gltype, quadIndices.getIndices(0));
}
} // opengl