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/*
* Copyright 2010 Inalogic® Inc.
*
* This program 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 2.1 or 3.0
* of the License.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranties of
* MERCHANTABILITY, SATISFACTORY QUALITY or FITNESS FOR A PARTICULAR
* PURPOSE. See the applicable version of the GNU Lesser General Public
* License for more details.
*
* You should have received a copy of both the GNU Lesser General Public
* License along with this program. If not, see <http://www.gnu.org/licenses/>
*
* Authored by: Jay Taoko <jaytaoko@inalogic.com>
*
*/
#ifndef GLTEXTURESTATES_H
#define GLTEXTURESTATES_H
#include "NuxCore/NuxCore.h"
namespace nux
{
enum
{
GFXTS_ADDRESSU, // GL_REPEAT
GFXTS_ADDRESSV, // GL_REPEAT
GFXTS_ADDRESSW, // GL_REPEAT
GFXTS_MINFILTER, // GL_NEAREST
GFXTS_MAGFILTER, // GL_NEAREST
GFXTS_MIPFILTER, // GL_NEAREST
GFXTS_MIP_BASE_LEVEL, // 0
GFXTS_MIP_MAX_LEVEL, // 1000
GFXTS_MIN_LOD, // -1000
GFXTS_MAX_LOD, // +1000
GFXTS_BORDERCOLOR, // 0x00000000
GFXTS_MAX_TEXTURESTATES,
};
struct TextureStateMap
{
bool Checked;
unsigned int State;
unsigned int Dirty;
unsigned int iValue;
float fValue;
TextureStateMap()
{
Dirty = true;
}
};
class GpuDevice;
class GLTextureStates
{
public:
GLTextureStates(GLuint Type = GL_TEXTURE_2D);
~GLTextureStates();
void ResetDefault();
void ResetStateChangeToDefault();
void SetRenderStates();
void SetType(GLuint Type);
void SetFiltering(
unsigned int MIN = GL_NEAREST,
unsigned int MAG = GL_NEAREST/*,
unsigned int MIP = GL_NEAREST*/);
void SetWrap(
unsigned int U = GL_REPEAT,
unsigned int V = GL_REPEAT,
unsigned int W = GL_REPEAT);
void SetLOD(
float MinLod = -1000.0f,
float MaxLod = +1000.0f);
void SetMipLevel(
unsigned int MinMip = 0,
unsigned int MaxMip = 1000);
void SetBorderColor(
float R,
float G,
float B,
float A);
private:
void HW_SetFiltering();
void HW_SetWrap();
void HW_SetLOD();
void HW_SetMipLevel();
void HW_SetBorderColor();
GLuint m_Type;
TextureStateMap m_TextureStateChanges[GFXTS_MAX_TEXTURESTATES];
friend class GpuDevice;
};
// #define SET_TS_VALUE(a, b) (a).iValue = (b); (a).Dirty = true;
// #define TS_VALUE(a, b) (a).iValue
//
// #define SET_TS_VALUE_FLOAT(a, b) (a).fValue = (b); (a).Dirty = true;
// #define TS_VALUE_FLOAT(a, b) (a).fValue
//
//
// inline void GLTextureStates::SetFiltering(
// unsigned int MIN,
// unsigned int MAG
// /*,unsigned int MIP*/)
// {
// nuxAssertMsg(
// (MIN == GL_LINEAR) ||
// (MIN == GL_NEAREST) ||
// (MIN == GL_NEAREST_MIPMAP_NEAREST) ||
// (MIN == GL_LINEAR_MIPMAP_NEAREST) ||
// (MIN == GL_NEAREST_MIPMAP_LINEAR) ||
// (MIN == GL_LINEAR_MIPMAP_LINEAR),
// "Error[GLTextureStates::SetFiltering]: Invalid Min. Filter State");
//
// nuxAssertMsg(
// (MAG == GL_LINEAR) ||
// (MAG == GL_NEAREST),
// "Error[GLTextureStates::SetFiltering]: Invalid Mag. Filter State");
//
// // nuxAssertMsg(
// // (MIP == GL_LINEAR) ||
// // (MIP == GL_NEAREST),
// // "Error[GLTextureStates::SetFiltering]: Invalid Mipmap Filter State");
//
// SET_TS_VALUE(m_TextureStateChanges[GFXTS_MINFILTER], MIN);
// SET_TS_VALUE(m_TextureStateChanges[GFXTS_MAGFILTER], MAG);
// //SET_TS_VALUE(m_TextureStateChanges[GFXTS_MIPFILTER], MIP);
// }
//
// inline void GLTextureStates::SetWrap(
// unsigned int U,
// unsigned int V,
// unsigned int W)
// {
// nuxAssertMsg(
// (U == GL_CLAMP) ||
// (U == GL_CLAMP_TO_EDGE) ||
// (U == GL_REPEAT),
// "Error[GLTextureStates::SetWrap]: Invalid U Wrap State");
// nuxAssertMsg(
// (V == GL_CLAMP) ||
// (V == GL_CLAMP_TO_EDGE) ||
// (V == GL_REPEAT),
// "Error[GLTextureStates::SetWrap]: Invalid V Wrap State");
// nuxAssertMsg(
// (W == GL_CLAMP) ||
// (W == GL_CLAMP_TO_EDGE) ||
// (W == GL_REPEAT),
// "Error[GLTextureStates::SetWrap]: Invalid W Wrap State");
//
// SET_TS_VALUE(m_TextureStateChanges[GFXTS_ADDRESSU], U);
// SET_TS_VALUE(m_TextureStateChanges[GFXTS_ADDRESSV], V);
// SET_TS_VALUE(m_TextureStateChanges[GFXTS_ADDRESSW], W);
//
//
// }
//
// inline void GLTextureStates::SetLOD(float MinLod,
// float MaxLod)
// {
// SET_TS_VALUE_FLOAT(m_TextureStateChanges[GFXTS_MIN_LOD], MinLod);
// SET_TS_VALUE_FLOAT(m_TextureStateChanges[GFXTS_MAX_LOD], MaxLod);
// }
//
// inline void GLTextureStates::SetMipLevel(
// unsigned int MinMip,
// unsigned int MaxMip)
// {
// SET_TS_VALUE(m_TextureStateChanges[GFXTS_MIP_BASE_LEVEL], MinMip);
// SET_TS_VALUE(m_TextureStateChanges[GFXTS_MIP_MAX_LEVEL], MaxMip);
// }
//
// inline void GLTextureStates::SetBorderColor(
// float R,
// float G,
// float B,
// float A)
// {
// unsigned int r, g, b, a;
// r = 255 * Clamp(R, 0.0f, 1.0f);
// g = 255 * Clamp(G, 0.0f, 1.0f);
// b = 255 * Clamp(B, 0.0f, 1.0f);
// a = 255 * Clamp(A, 0.0f, 1.0f);
// unsigned int color = (unsigned int) (((a) << 24) | ((r) << 16) | ((g) << 8) | (b));
//
// SET_TS_VALUE(m_TextureStateChanges[GFXTS_BORDERCOLOR], color);
// }
//
// #undef SET_TS_VALUE
// #undef TS_VALUE
//
// #undef SET_TS_VALUE_FLOAT
// #undef TS_VALUE_FLOAT
}
#endif // GLTEXTURESTATES_H
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