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/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2012 Intel Corporation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see
* <http://www.gnu.org/licenses/>.
*
*
*
* Authors:
* Robert Bragg <robert@linux.intel.com>
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <string.h>
#include "cogl-pipeline-private.h"
#include "cogl-pipeline-state-private.h"
#ifdef COGL_PIPELINE_PROGEND_FIXED_ARBFP
#include "cogl-context.h"
#include "cogl-context-private.h"
#include "cogl-framebuffer-private.h"
#include "cogl-program-private.h"
static CoglBool
_cogl_pipeline_progend_fixed_arbfp_start (CoglPipeline *pipeline)
{
CoglHandle user_program;
_COGL_GET_CONTEXT (ctx, FALSE);
if (G_UNLIKELY (COGL_DEBUG_ENABLED (COGL_DEBUG_DISABLE_FIXED)))
return FALSE;
if (!_cogl_has_private_feature (ctx, COGL_PRIVATE_FEATURE_GL_FIXED))
return FALSE;
/* Vertex snippets are only supported in the GLSL fragend */
if (_cogl_pipeline_has_vertex_snippets (pipeline))
return FALSE;
/* Validate that we can handle the fragment state using ARBfp
*/
if (!cogl_has_feature (ctx, COGL_FEATURE_ID_ARBFP))
return FALSE;
/* Fragment snippets are only supported in the GLSL fragend */
if (_cogl_pipeline_has_fragment_snippets (pipeline))
return FALSE;
user_program = cogl_pipeline_get_user_program (pipeline);
if (user_program &&
_cogl_program_get_language (user_program) != COGL_SHADER_LANGUAGE_ARBFP)
return FALSE;
/* The ARBfp progend can't handle the per-vertex point size
* attribute */
if (cogl_pipeline_get_per_vertex_point_size (pipeline))
return FALSE;
return TRUE;
}
static void
_cogl_pipeline_progend_fixed_arbfp_pre_paint (CoglPipeline *pipeline,
CoglFramebuffer *framebuffer)
{
CoglContext *ctx = framebuffer->context;
if (ctx->current_projection_entry)
_cogl_matrix_entry_flush_to_gl_builtins (ctx,
ctx->current_projection_entry,
COGL_MATRIX_PROJECTION,
framebuffer,
FALSE /* enable flip */);
if (ctx->current_modelview_entry)
_cogl_matrix_entry_flush_to_gl_builtins (ctx,
ctx->current_modelview_entry,
COGL_MATRIX_MODELVIEW,
framebuffer,
FALSE /* enable flip */);
}
const CoglPipelineProgend _cogl_pipeline_fixed_arbfp_progend =
{
COGL_PIPELINE_VERTEND_FIXED,
COGL_PIPELINE_FRAGEND_ARBFP,
_cogl_pipeline_progend_fixed_arbfp_start,
NULL, /* end */
NULL, /* pre_change_notify */
NULL, /* layer_pre_change_notify */
_cogl_pipeline_progend_fixed_arbfp_pre_paint
};
#endif /* COGL_PIPELINE_PROGEND_FIXED_ARBFP */
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