92c3063014
This adds cogl_framebuffer_ apis for drawing attributes and primitives that replace corresponding apis that depend on the default CoglContext. This is part of the on going effort to adapt the Cogl api so it no longer depends on a global context variable. All the new drawing functions also take an explicit pipeline argument since we are also aiming to avoid being a stateful api like Cairo and OpenGL. Being stateless makes it easier for orthogonal components to share access to the GPU. Being stateless should also minimize any impedance miss-match for those wanting to build higher level stateless apis on top of Cogl. Note: none of the legacy, global state options such as cogl_set_depth_test_enabled(), cogl_set_backface_culling_enabled() or cogl_program_use() are supported by these new drawing apis and if set will simply be silently ignored. Reviewed-by: Neil Roberts <neil@linux.intel.com>
109 lines
3.1 KiB
C
109 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_ATTRIBUTE_PRIVATE_H
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#define __COGL_ATTRIBUTE_PRIVATE_H
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#include "cogl-object-private.h"
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#include "cogl-attribute.h"
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typedef enum
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{
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COGL_ATTRIBUTE_NAME_ID_POSITION_ARRAY,
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COGL_ATTRIBUTE_NAME_ID_COLOR_ARRAY,
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COGL_ATTRIBUTE_NAME_ID_TEXTURE_COORD_ARRAY,
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COGL_ATTRIBUTE_NAME_ID_NORMAL_ARRAY,
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COGL_ATTRIBUTE_NAME_ID_CUSTOM_ARRAY
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} CoglAttributeNameID;
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typedef struct _CoglAttributeNameState
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{
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char *name;
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CoglAttributeNameID name_id;
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int name_index;
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gboolean normalized_default;
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int texture_unit;
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} CoglAttributeNameState;
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struct _CoglAttribute
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{
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CoglObject _parent;
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CoglAttributeBuffer *attribute_buffer;
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const CoglAttributeNameState *name_state;
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gsize stride;
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gsize offset;
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int n_components;
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CoglAttributeType type;
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gboolean normalized;
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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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COGL_DRAW_SKIP_LEGACY_STATE = 1 << 3,
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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 << 4
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} CoglDrawFlags;
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/* During CoglContext initialization we register the "cogl_color_in"
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* attribute name so it gets a global name_index of 0. We need to know
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* the name_index for "cogl_color_in" in
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* _cogl_pipeline_flush_gl_state() */
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#define COGL_ATTRIBUTE_COLOR_NAME_INDEX 0
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CoglAttributeNameState *
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_cogl_attribute_register_attribute_name (CoglContext *context,
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const char *name);
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CoglAttribute *
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_cogl_attribute_immutable_ref (CoglAttribute *attribute);
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void
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_cogl_attribute_immutable_unref (CoglAttribute *attribute);
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void
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_cogl_attribute_disable_cached_arrays (void);
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void
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_cogl_flush_attributes_state (CoglFramebuffer *framebuffer,
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CoglPipeline *pipeline,
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CoglDrawFlags flags,
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CoglAttribute **attributes,
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int n_attributes);
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#endif /* __COGL_ATTRIBUTE_PRIVATE_H */
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