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Properly orphan polygon index buffer after binding (take 2) 

Follow-up to #34088, patch by @oeleo1 from
https://github.com/godotengine/godot/issues/34065#issuecomment-561530896
This commit is contained in:
Rémi Verschelde 2019-12-04 12:16:50 +01:00
parent e1dda5195c
commit 745a8915fc
1 changed files with 5 additions and 2 deletions
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7
drivers/gles3/rasterizer_canvas_gles3.cpp
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@ -479,9 +479,8 @@ void RasterizerCanvasGLES3::_draw_generic_indices(GLuint p_primitive, const int
glBindBuffer(GL_ARRAY_BUFFER, data.polygon_buffer);
#ifndef GLES_OVER_GL
// Orphan the buffers to avoid CPU/GPU sync points caused by glBufferSubData
// Orphan the buffer to avoid CPU/GPU sync points caused by glBufferSubData
glBufferData(GL_ARRAY_BUFFER, data.polygon_buffer_size, NULL, GL_DYNAMIC_DRAW);
glBufferData(GL_ELEMENT_ARRAY_BUFFER, data.polygon_index_buffer_size, NULL, GL_DYNAMIC_DRAW);
#endif
uint32_t buffer_ofs = 0;
@ -532,6 +531,10 @@ void RasterizerCanvasGLES3::_draw_generic_indices(GLuint p_primitive, const int
//bind the indices buffer.
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, data.polygon_index_buffer);
#ifndef GLES_OVER_GL
// Orphan the buffer to avoid CPU/GPU sync points caused by glBufferSubData
glBufferData(GL_ELEMENT_ARRAY_BUFFER, data.polygon_index_buffer_size, NULL, GL_DYNAMIC_DRAW);
#endif
glBufferSubData(GL_ELEMENT_ARRAY_BUFFER, 0, sizeof(int) * p_index_count, p_indices);
//draw the triangles.