6e379fb54e
This makes it possible to create vertex attributes that efficiently represent constant values without duplicating the constant for every vertex. This adds the following new constructors for constant attributes: cogl_attribute_new_const_1f cogl_attribute_new_const_2fv cogl_attribute_new_const_3fv cogl_attribute_new_const_4fv cogl_attribute_new_const_2f cogl_attribute_new_const_3f cogl_attribute_new_const_4f cogl_attribute_new_const_2x2fv cogl_attribute_new_const_3x3fv cogl_attribute_new_const_4x4fv Reviewed-by: Neil Roberts <neil@linux.intel.com> (cherry picked from commit 6507216f8030e84dcf2e63b8ecfe906ac47f2ca7)
131 lines
3.6 KiB
C
131 lines
3.6 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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#include "cogl-framebuffer.h"
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#include "cogl-pipeline-private.h"
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#include "cogl-boxed-value.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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CoglBool normalized_default;
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int layer_number;
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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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const CoglAttributeNameState *name_state;
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CoglBool normalized;
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CoglBool is_buffered;
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union {
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struct {
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CoglAttributeBuffer *attribute_buffer;
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size_t stride;
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size_t offset;
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int n_components;
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CoglAttributeType type;
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} buffered;
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struct {
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CoglContext *context;
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CoglBoxedValue boxed;
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} constant;
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} d;
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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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/* This forcibly disables the debug option to divert all drawing to
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* wireframes */
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COGL_DRAW_SKIP_DEBUG_WIREFRAME = 1 << 5
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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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typedef struct
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{
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int unit;
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CoglPipelineFlushOptions options;
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uint32_t fallback_layers;
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} CoglFlushLayerState;
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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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