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The number of material layers enabled when logging a quad in the journal
determines the stride of the corresponding vertex data (since we need a set
of texture coordinates for each layer.) By padding data in the case where we
have only one layer we can avoid a change in stride if we are mixing single
and double layer primitives in a scene (e.g. relevent for a composite
manager that may use 2 layers for all shaped windows) Avoiding stride
changes means we can minimize calls to gl{Vertex,Color}Pointer when flushing
the journal.
Since we need to update the texcoord pointers when the actual number of
layers changes, this adds another batch_and_call() stage to deal with
glTexCoordPointer and enabling/disabling the client arrays.
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| .. | ||
| common | ||
| gl | ||
| gles | ||
| cogl-bitmap.h | ||
| cogl-color.h | ||
| cogl-debug.h | ||
| cogl-deprecated.h | ||
| cogl-fixed.h | ||
| cogl-material.h | ||
| cogl-matrix.h | ||
| cogl-offscreen.h | ||
| cogl-path.h | ||
| cogl-shader.h | ||
| cogl-texture.h | ||
| cogl-types.h | ||
| cogl-vertex-buffer.h | ||
| cogl.h.in | ||
| cogl.pc.in | ||
| Makefile.am | ||
| TODO | ||