119 lines
3.9 KiB
C++
119 lines
3.9 KiB
C++
// Copyright (c) 2006, Tobias Sargeant
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions
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// are met:
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//
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// Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// Redistributions in binary form must reproduce the above copyright
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// notice, this list of conditions and the following disclaimer in the
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// documentation and/or other materials provided with the
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// distribution. The names of its contributors may be used to endorse
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// or promote products derived from this software without specific
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// prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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// FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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// COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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// INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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// HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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// OF THE POSSIBILITY OF SUCH DAMAGE.
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#pragma once
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#include <gloop/gloopgl.hpp>
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#include "exceptions.hpp"
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namespace gloop {
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struct TextureParam {
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static GLfloat s_max_anisotropy;
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enum {
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FILTER = 1,
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LOD = 2,
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MIPMAP = 4,
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WRAP = 8,
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BORDER = 16,
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PRIORITY = 32,
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ALL = 63
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};
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GLenum min_filter;
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GLenum mag_filter;
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GLfloat min_lod;
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GLfloat max_lod;
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GLint min_mipmap;
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GLint max_mipmap;
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GLenum wrap_s;
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GLenum wrap_t;
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GLenum wrap_r;
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GLfloat priority;
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GLfloat anisotropy;
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GLfloat border_colour[4];
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TextureParam(GLenum _wrap = GL_REPEAT, GLenum _filter = GL_LINEAR, GLenum _min_filter = 0) {
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if (s_max_anisotropy == 0.0f) {
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if (GLEW_EXT_texture_filter_anisotropic) {
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glGetFloatv(GL_TEXTURE_MAX_ANISOTROPY_EXT, &s_max_anisotropy);
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} else {
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s_max_anisotropy = 1.0f;
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}
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}
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if (_min_filter == 0) _min_filter = _filter;
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min_filter = _min_filter;
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mag_filter = _filter;
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min_lod = -1000;
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max_lod = 1000;
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min_mipmap = 0;
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max_mipmap = 1000;
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wrap_s = wrap_t = wrap_r = _wrap;
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priority = 0.0f;
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anisotropy = 1.0f;
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border_colour[0] = border_colour[1] = border_colour[2] = border_colour[3] = 0.0f;
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}
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~TextureParam() {
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}
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void apply(GLenum target, int flags = ALL) {
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if (flags & FILTER) {
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glTexParameteri(target, GL_TEXTURE_MIN_FILTER, min_filter);
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glTexParameteri(target, GL_TEXTURE_MAG_FILTER, mag_filter);
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if (s_max_anisotropy > 1.0f) {
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glTexParameterf(target, GL_TEXTURE_MAX_ANISOTROPY_EXT, anisotropy);
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}
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}
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if (flags & LOD) {
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glTexParameterf(target, GL_TEXTURE_MIN_LOD, min_lod);
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glTexParameterf(target, GL_TEXTURE_MAX_LOD, max_lod);
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}
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if (flags & MIPMAP) {
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glTexParameteri(target, GL_TEXTURE_BASE_LEVEL, min_mipmap);
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glTexParameteri(target, GL_TEXTURE_MAX_LEVEL, max_mipmap);
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}
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if (flags & WRAP) {
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glTexParameteri(target, GL_TEXTURE_WRAP_S, wrap_s);
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glTexParameteri(target, GL_TEXTURE_WRAP_T, wrap_t);
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glTexParameteri(target, GL_TEXTURE_WRAP_R, wrap_r);
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}
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if (flags & BORDER) {
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glTexParameterfv(target, GL_TEXTURE_BORDER_COLOR, border_colour);
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}
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if (flags & PRIORITY) {
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glTexParameterf(target, GL_TEXTURE_PRIORITY, priority);
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}
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}
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};
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}
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