07c0b9f89f
Instead of simply extending the cogl_pipeline_ namespace to add api for
controlling the depth testing state we now break the api out. This adds
a CoglDepthState type that can be stack allocated. The members of the
structure are private but we have the following API to setup the state:
cogl_depth_state_init
cogl_depth_state_set_test_enabled
cogl_depth_state_get_test_enabled
cogl_depth_state_set_test_function
cogl_depth_state_get_test_function
cogl_depth_state_set_writing_enabled
cogl_depth_state_get_writing_enabled
cogl_depth_state_set_range
cogl_depth_state_get_range
This removes the following experimental API which is now superseded:
cogl_material_set_depth_test_enabled
cogl_material_get_depth_test_enabled
cogl_material_set_depth_test_function
cogl_material_get_depth_test_function
cogl_material_set_depth_writing_enabled
cogl_material_get_depth_writing_enabled
cogl_material_set_depth_range
cogl_material_get_depth_range
Once a CoglDepthState structure is setup it can be set on a pipeline
using cogl_pipeline_set_depth_state().
109 lines
2.9 KiB
C
109 lines
2.9 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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* Authors:
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* Robert Bragg <robert@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 <cogl/cogl.h>
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#include "cogl-depth-state-private.h"
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void
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cogl_depth_state_init (CoglDepthState *state)
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{
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state->magic = COGL_DEPTH_STATE_MAGIC;
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state->test_enabled = FALSE;
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state->write_enabled = TRUE;
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state->test_function = COGL_DEPTH_TEST_FUNCTION_LESS;
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state->range_near = 0;
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state->range_far = 1;
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}
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void
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cogl_depth_state_set_test_enabled (CoglDepthState *state,
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gboolean enabled)
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{
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g_return_if_fail (state->magic == COGL_DEPTH_STATE_MAGIC);
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state->test_enabled = enabled;
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}
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gboolean
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cogl_depth_state_get_test_enabled (CoglDepthState *state)
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{
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g_return_val_if_fail (state->magic == COGL_DEPTH_STATE_MAGIC, FALSE);
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return state->test_enabled;
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}
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void
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cogl_depth_state_set_write_enabled (CoglDepthState *state,
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gboolean enabled)
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{
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g_return_if_fail (state->magic == COGL_DEPTH_STATE_MAGIC);
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state->write_enabled = enabled;
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}
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gboolean
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cogl_depth_state_get_write_enabled (CoglDepthState *state)
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{
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g_return_val_if_fail (state->magic == COGL_DEPTH_STATE_MAGIC, FALSE);
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return state->write_enabled;
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}
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void
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cogl_depth_state_set_test_function (CoglDepthState *state,
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CoglDepthTestFunction function)
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{
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g_return_if_fail (state->magic == COGL_DEPTH_STATE_MAGIC);
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state->test_function = function;
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}
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CoglDepthTestFunction
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cogl_depth_state_get_test_function (CoglDepthState *state)
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{
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g_return_val_if_fail (state->magic == COGL_DEPTH_STATE_MAGIC, FALSE);
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return state->test_function;
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}
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void
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cogl_depth_state_set_range (CoglDepthState *state,
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float near,
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float far)
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{
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g_return_if_fail (state->magic == COGL_DEPTH_STATE_MAGIC);
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state->range_near = near;
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state->range_far = far;
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}
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void
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cogl_depth_state_get_range (CoglDepthState *state,
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float *near_out,
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float *far_out)
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{
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g_return_if_fail (state->magic == COGL_DEPTH_STATE_MAGIC);
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*near_out = state->range_near;
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*far_out = state->range_far;
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}
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