bbce77fcea
The vertex attribute API assumes that if there is a color array enabled then we can't determine if the colors are opaque so we have to enable blending. The journal always uses a color array to avoid switching color state between rectangles. Since the journal switched to using vertex attributes this means we effectively always enable blending from the journal. To fix this there is now a new flag for _cogl_draw_vertex_attributes to specify that the color array is known to only contain opaque colors which causes the draw function not to copy the pipeline. If the pipeline has blending disabled then the journal passes this flag. http://bugzilla.clutter-project.org/show_bug.cgi?id=2481
100 lines
3.1 KiB
C
100 lines
3.1 KiB
C
/*
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* Cogl
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*
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* An object oriented GL/GLES Abstraction/Utility Layer
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*
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* Copyright (C) 2010 Intel Corporation.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see
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* <http://www.gnu.org/licenses/>.
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*
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*
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*
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* Authors:
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* Robert Bragg <robert@linux.intel.com>
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*/
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#ifndef __COGL_VERTEX_ATTRIBUTE_PRIVATE_H
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#define __COGL_VERTEX_ATTRIBUTE_PRIVATE_H
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#include "cogl-object-private.h"
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#include "cogl-vertex-attribute.h"
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typedef enum
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{
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COGL_VERTEX_ATTRIBUTE_NAME_ID_POSITION_ARRAY,
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COGL_VERTEX_ATTRIBUTE_NAME_ID_COLOR_ARRAY,
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COGL_VERTEX_ATTRIBUTE_NAME_ID_TEXTURE_COORD_ARRAY,
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COGL_VERTEX_ATTRIBUTE_NAME_ID_NORMAL_ARRAY,
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COGL_VERTEX_ATTRIBUTE_NAME_ID_CUSTOM_ARRAY
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} CoglVertexAttributeNameID;
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struct _CoglVertexAttribute
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{
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CoglObject _parent;
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CoglVertexArray *array;
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char *name;
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CoglVertexAttributeNameID name_id;
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gsize stride;
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gsize offset;
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int n_components;
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CoglVertexAttributeType type;
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gboolean normalized;
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unsigned int texture_unit;
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int immutable_ref;
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};
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typedef enum
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{
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COGL_DRAW_SKIP_JOURNAL_FLUSH = 1 << 0,
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COGL_DRAW_SKIP_PIPELINE_VALIDATION = 1 << 1,
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COGL_DRAW_SKIP_FRAMEBUFFER_FLUSH = 1 << 2,
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/* By default the vertex attribute drawing code will assume that if
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there is a color attribute array enabled then we can't determine
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if the colors will be opaque so we need to enabling
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blending. However when drawing from the journal we know what the
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contents of the color array is so we can override this by passing
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this flag. */
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COGL_DRAW_COLOR_ATTRIBUTE_IS_OPAQUE = 1 << 3
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} CoglDrawFlags;
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CoglVertexAttribute *
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_cogl_vertex_attribute_immutable_ref (CoglVertexAttribute *vertex_attribute);
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void
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_cogl_vertex_attribute_immutable_unref (CoglVertexAttribute *vertex_attribute);
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void
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_cogl_draw_vertex_attributes_array (CoglVerticesMode mode,
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int first_vertex,
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int n_vertices,
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CoglVertexAttribute **attributes,
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CoglDrawFlags flags);
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void
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_cogl_draw_indexed_vertex_attributes_array (CoglVerticesMode mode,
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int first_vertex,
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int n_vertices,
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CoglIndices *indices,
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CoglVertexAttribute **attributes,
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CoglDrawFlags flags);
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void
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_cogl_vertex_attribute_disable_cached_arrays (void);
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#endif /* __COGL_VERTEX_ATTRIBUTE_PRIVATE_H */
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