34658ea057
This adds a table of driver descriptions to cogl-renderer.c in order of preference and when choosing what driver to use we now iterate the table instead of repeating boilerplate checks. For handling the "default driver" that can be specified when building cogl and handling driver overrides there is a foreach_driver_description() that will make sure to iterate the default driver first or if an override has been set then nothing but the override will be considered. This patch introduces some driver flags that let us broadly categorize what kind of GL driver we are currently running on. Since there are numerous OpenGL apis with different broad feature sets and new apis may be introduced in the future by Khronos then we should tend to avoid using the driver id to do runtime feature checking. These flags provide a more stable quantity for broad feature checks. Reviewed-by: Neil Roberts <neil@linux.intel.com> (cherry picked from commit e07d0fc7441dddc3f0a2bc33a6a37d62ddc3efc0)
106 lines
3.2 KiB
C
106 lines
3.2 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) 2011 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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* Neil Roberts <neil@linux.intel.com>
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <string.h>
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#include "cogl-pipeline-private.h"
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#include "cogl-pipeline-state-private.h"
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#ifdef COGL_PIPELINE_PROGEND_FIXED
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#include "cogl-context.h"
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#include "cogl-context-private.h"
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#include "cogl-framebuffer-private.h"
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static CoglBool
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_cogl_pipeline_progend_fixed_start (CoglPipeline *pipeline)
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{
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_COGL_GET_CONTEXT (ctx, FALSE);
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if (G_UNLIKELY (COGL_DEBUG_ENABLED (COGL_DEBUG_DISABLE_FIXED)))
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return FALSE;
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if (!(ctx->private_feature_flags & COGL_PRIVATE_FEATURE_GL_FIXED))
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return FALSE;
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/* Vertex snippets are only supported in the GLSL fragend */
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if (_cogl_pipeline_has_vertex_snippets (pipeline))
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return FALSE;
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/* Fragment snippets are only supported in the GLSL fragend */
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if (_cogl_pipeline_has_fragment_snippets (pipeline))
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return FALSE;
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/* If there is a user program then the appropriate backend for that
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* language should handle it. */
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if (cogl_pipeline_get_user_program (pipeline))
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return FALSE;
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/* The fixed progend can't handle the per-vertex point size
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* attribute */
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if (cogl_pipeline_get_per_vertex_point_size (pipeline))
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return FALSE;
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return TRUE;
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}
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static void
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_cogl_pipeline_progend_fixed_pre_paint (CoglPipeline *pipeline,
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CoglFramebuffer *framebuffer)
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{
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CoglContext *ctx = framebuffer->context;
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if (ctx->current_projection_entry)
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_cogl_matrix_entry_flush_to_gl_builtins (ctx,
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ctx->current_projection_entry,
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COGL_MATRIX_PROJECTION,
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framebuffer,
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FALSE /* enable flip */);
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if (ctx->current_modelview_entry)
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_cogl_matrix_entry_flush_to_gl_builtins (ctx,
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ctx->current_modelview_entry,
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COGL_MATRIX_MODELVIEW,
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framebuffer,
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FALSE /* enable flip */);
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}
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const CoglPipelineProgend _cogl_pipeline_fixed_progend =
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{
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COGL_PIPELINE_VERTEND_FIXED,
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COGL_PIPELINE_FRAGEND_FIXED,
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_cogl_pipeline_progend_fixed_start,
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NULL, /* end */
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NULL, /* pre_change_notify */
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NULL, /* layer_pre_change_notify */
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_cogl_pipeline_progend_fixed_pre_paint
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};
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#endif /* COGL_PIPELINE_PROGEND_FIXED */
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