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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>
*
*/
#include "GLResource.h"
#include "GLTextureStates.h"
namespace nux
{
const struct TextureStateLookUpTable
{
TextureStateLookUpTable()
{
// setup render state map
#define UL_MAP(state__, default_value__, checked__) \
default_texture_state[GFXTS_##state__].iValue = default_value__; \
default_texture_state[GFXTS_##state__].Checked = checked__;
#define UL_MAP_FLOAT(state__, default_value__, checked__) \
default_texture_state[GFXTS_##state__].fValue = default_value__; \
default_texture_state[GFXTS_##state__].Checked = checked__;
UL_MAP(ADDRESSU , GL_REPEAT , 1);
UL_MAP(ADDRESSV , GL_REPEAT , 1);
UL_MAP(ADDRESSW , GL_REPEAT , 1);
UL_MAP(MINFILTER , GL_NEAREST , 1);
UL_MAP(MAGFILTER , GL_NEAREST , 1);
UL_MAP(MIPFILTER , GL_NEAREST , 1);
UL_MAP(MIP_BASE_LEVEL , 0 , 1);
UL_MAP(MIP_MAX_LEVEL , 1000 , 1);
UL_MAP_FLOAT(MIN_LOD , -1000 , 1);
UL_MAP_FLOAT(MAX_LOD , +1000 , 1);
UL_MAP(BORDERCOLOR , 0x0 , 1);
#undef UL_MAP
#undef UL_MAP_FLOAT
};
TextureStateMap default_texture_state[GFXTS_MAX_TEXTURESTATES];
} s_TextureStateLUT;
GLTextureStates::GLTextureStates(GLuint Type)
{
SetType(Type);
Memcpy(&m_TextureStateChanges, &s_TextureStateLUT.default_texture_state, sizeof(m_TextureStateChanges));
}
GLTextureStates::~GLTextureStates()
{
}
void GLTextureStates::SetType(GLuint Type)
{
#ifndef NUX_OPENGLES_20
nuxAssertMsg(
(Type == GL_TEXTURE_1D) ||
(Type == GL_TEXTURE_2D) ||
(Type == GL_TEXTURE_RECTANGLE_ARB) ||
(Type == GL_TEXTURE_3D) ||
(Type == GL_TEXTURE_CUBE_MAP_ARB),
"Error[GLTextureStates::GLTextureStates]: Invalid texture type.");
#else
nuxAssertMsg(
(Type == GL_TEXTURE_2D),
"Error[GLTextureStates::GLTextureStates]: Invalid texture type.");
#endif
m_Type = Type;
}
void GLTextureStates::ResetDefault()
{
}
void GLTextureStates::ResetStateChangeToDefault()
{
}
void GLTextureStates::SetRenderStates()
{
HW_SetFiltering();
HW_SetWrap();
HW_SetLOD();
HW_SetMipLevel();
}
#define SET_TS_VALUE(a, b) if (a.iValue != b){(a).iValue = (b); (a).Dirty = true;}
#define TS_VALUE(a, b) (a).iValue
#define SET_TS_VALUE_FLOAT(a, b) if (a.fValue != b){(a).fValue = (b); (a).Dirty = true;}
#define TS_VALUE_FLOAT(a, b) (a).fValue
void GLTextureStates::HW_SetFiltering()
{
if (m_TextureStateChanges[GFXTS_MINFILTER].Dirty || m_TextureStateChanges[GFXTS_MAGFILTER].Dirty)
{
CHECKGL(glTexParameteri(m_Type, GL_TEXTURE_MIN_FILTER, m_TextureStateChanges[GFXTS_MINFILTER].iValue ));
CHECKGL(glTexParameteri(m_Type, GL_TEXTURE_MAG_FILTER, m_TextureStateChanges[GFXTS_MAGFILTER].iValue));
m_TextureStateChanges[GFXTS_MINFILTER].Dirty = false;
m_TextureStateChanges[GFXTS_MAGFILTER].Dirty = false;
}
}
void GLTextureStates::HW_SetWrap()
{
if (m_TextureStateChanges[GFXTS_ADDRESSU].Dirty ||
m_TextureStateChanges[GFXTS_ADDRESSV].Dirty ||
m_TextureStateChanges[GFXTS_ADDRESSW].Dirty)
{
CHECKGL(glTexParameteri(m_Type, GL_TEXTURE_WRAP_S, m_TextureStateChanges[GFXTS_ADDRESSU].iValue));
CHECKGL(glTexParameteri(m_Type, GL_TEXTURE_WRAP_T, m_TextureStateChanges[GFXTS_ADDRESSV].iValue));
#ifndef NUX_OPENGLES_20
CHECKGL(glTexParameteri(m_Type, GL_TEXTURE_WRAP_R, m_TextureStateChanges[GFXTS_ADDRESSW].iValue));
#endif
m_TextureStateChanges[GFXTS_ADDRESSU].Dirty = false;
m_TextureStateChanges[GFXTS_ADDRESSV].Dirty = false;
m_TextureStateChanges[GFXTS_ADDRESSW].Dirty = false;
}
}
void GLTextureStates::HW_SetLOD()
{
#ifndef NUX_OPENGLES_20
if (m_Type == GL_TEXTURE_RECTANGLE_ARB)
{
// No support for mip LOP on rectangle texture.
// ATI seems to not generate and Error.
// Nvidia generates an error
m_TextureStateChanges[GFXTS_MIN_LOD].Dirty = false;
m_TextureStateChanges[GFXTS_MAX_LOD].Dirty = false;
return;
}
if (m_TextureStateChanges[GFXTS_MIN_LOD].Dirty || m_TextureStateChanges[GFXTS_MAX_LOD].Dirty)
{
CHECKGL(glTexParameteri(m_Type, GL_TEXTURE_MIN_LOD, m_TextureStateChanges[GFXTS_MIN_LOD].fValue));
CHECKGL(glTexParameteri(m_Type, GL_TEXTURE_MAX_LOD, m_TextureStateChanges[GFXTS_MAX_LOD].fValue));
m_TextureStateChanges[GFXTS_MIN_LOD].Dirty = false;
m_TextureStateChanges[GFXTS_MAX_LOD].Dirty = false;
}
#endif
}
void GLTextureStates::HW_SetMipLevel()
{
#ifndef NUX_OPENGLES_20
if (m_TextureStateChanges[GFXTS_MIN_LOD].Dirty || m_TextureStateChanges[GFXTS_MAX_LOD].Dirty)
{
CHECKGL(glTexParameteri(m_Type, GL_TEXTURE_MIN_LOD, m_TextureStateChanges[GFXTS_MIN_LOD].fValue));
CHECKGL(glTexParameteri(m_Type, GL_TEXTURE_MAX_LOD, m_TextureStateChanges[GFXTS_MAX_LOD].fValue));
m_TextureStateChanges[GFXTS_MIN_LOD].Dirty = false;
m_TextureStateChanges[GFXTS_MAX_LOD].Dirty = false;
}
#endif
}
void GLTextureStates::HW_SetBorderColor()
{
}
void GLTextureStates::SetFiltering(
unsigned int MinFilter,
unsigned int MagFilter
/*,unsigned int MIP*/)
{
nuxAssertMsg(
(MinFilter == GL_LINEAR) ||
(MinFilter == GL_NEAREST) ||
(MinFilter == GL_NEAREST_MIPMAP_NEAREST) ||
(MinFilter == GL_LINEAR_MIPMAP_NEAREST) ||
(MinFilter == GL_NEAREST_MIPMAP_LINEAR) ||
(MinFilter == GL_LINEAR_MIPMAP_LINEAR),
"Error[GLTextureStates::SetFiltering]: Invalid MinFilter state");
nuxAssertMsg(
(MagFilter == GL_LINEAR) ||
(MagFilter == GL_NEAREST),
"Error[GLTextureStates::SetFiltering]: Invalid MagFilter state");
// nuxAssertMsg(
// (MIP == GL_LINEAR) ||
// (MIP == GL_NEAREST),
// "Error[GLTextureStates::SetFiltering]: Invalid Mipmap Filter State");
#ifndef NUX_OPENGLES_20
if (m_Type == GL_TEXTURE_RECTANGLE_ARB)
{
if ((MinFilter != GL_NEAREST) && (MinFilter != GL_LINEAR))
{
nuxError("[GLTextureStates::SetFiltering] Incorrect MinFilter for rectangle texture.");
SET_TS_VALUE(m_TextureStateChanges[GFXTS_MINFILTER], GL_LINEAR);
}
else
{
SET_TS_VALUE(m_TextureStateChanges[GFXTS_MINFILTER], MinFilter);
}
if ((MagFilter != GL_NEAREST) && (MagFilter != GL_LINEAR))
{
nuxError("[GLTextureStates::SetFiltering] Incorrect MagFilter for rectangle texture.");
SET_TS_VALUE(m_TextureStateChanges[GFXTS_MAGFILTER], GL_LINEAR);
}
else
{
SET_TS_VALUE(m_TextureStateChanges[GFXTS_MAGFILTER], MagFilter);
}
}
else
{
SET_TS_VALUE(m_TextureStateChanges[GFXTS_MINFILTER], MinFilter);
SET_TS_VALUE(m_TextureStateChanges[GFXTS_MAGFILTER], MagFilter);
}
#else
SET_TS_VALUE(m_TextureStateChanges[GFXTS_MINFILTER], MinFilter);
SET_TS_VALUE(m_TextureStateChanges[GFXTS_MAGFILTER], MagFilter);
#endif
//SET_TS_VALUE(m_TextureStateChanges[GFXTS_MIPFILTER], MIP);
}
void GLTextureStates::SetWrap(
unsigned int U,
unsigned int V,
unsigned int W)
{
#ifndef NUX_OPENGLES_20
nuxAssertMsg(
(U == GL_CLAMP) ||
(U == GL_CLAMP_TO_EDGE) ||
(U == GL_CLAMP_TO_BORDER) ||
(U == GL_MIRRORED_REPEAT) ||
(U == GL_MIRROR_CLAMP_EXT) ||
(U == GL_MIRROR_CLAMP_TO_EDGE_EXT) ||
(U == GL_MIRROR_CLAMP_TO_BORDER_EXT) ||
(U == GL_REPEAT),
"Error[GLTextureStates::SetWrap]: Invalid U Wrap State");
nuxAssertMsg(
(V == GL_CLAMP) ||
(V == GL_CLAMP_TO_EDGE) ||
(V == GL_CLAMP_TO_BORDER) ||
(V == GL_MIRRORED_REPEAT) ||
(V == GL_MIRROR_CLAMP_EXT) ||
(V == GL_MIRROR_CLAMP_TO_EDGE_EXT) ||
(V == GL_MIRROR_CLAMP_TO_BORDER_EXT) ||
(V == GL_REPEAT),
"Error[GLTextureStates::SetWrap]: Invalid V Wrap State");
nuxAssertMsg(
(W == GL_CLAMP) ||
(W == GL_CLAMP_TO_EDGE) ||
(W == GL_CLAMP_TO_BORDER) ||
(W == GL_MIRRORED_REPEAT) ||
(W == GL_MIRROR_CLAMP_EXT) ||
(W == GL_MIRROR_CLAMP_TO_EDGE_EXT) ||
(W == GL_MIRROR_CLAMP_TO_BORDER_EXT) ||
(W == GL_REPEAT),
"Error[GLTextureStates::SetWrap]: Invalid W Wrap State");
if (m_Type == GL_TEXTURE_RECTANGLE_ARB)
{
if ((U != GL_CLAMP) && (U != GL_CLAMP_TO_BORDER) && (U != GL_CLAMP_TO_EDGE))
{
nuxError("[GLTextureStates::SetFiltering] Incorrect warp for rectangle texture.");
SET_TS_VALUE(m_TextureStateChanges[GFXTS_ADDRESSU], GL_CLAMP_TO_EDGE);
}
else
{
SET_TS_VALUE(m_TextureStateChanges[GFXTS_ADDRESSU], U);
}
if ((V != GL_CLAMP) && (V != GL_CLAMP_TO_BORDER) && (V != GL_CLAMP_TO_EDGE))
{
nuxError("[GLTextureStates::SetFiltering] Incorrect warp for rectangle texture.");
SET_TS_VALUE(m_TextureStateChanges[GFXTS_ADDRESSV], GL_CLAMP_TO_EDGE);
}
else
{
SET_TS_VALUE(m_TextureStateChanges[GFXTS_ADDRESSV], V);
}
if ((W != GL_CLAMP) && (W != GL_CLAMP_TO_BORDER) && (W != GL_CLAMP_TO_EDGE))
{
nuxError("[GLTextureStates::SetFiltering] Incorrect warp for rectangle texture.");
SET_TS_VALUE(m_TextureStateChanges[GFXTS_ADDRESSW], GL_CLAMP_TO_EDGE);
}
else
{
SET_TS_VALUE(m_TextureStateChanges[GFXTS_ADDRESSW], W);
}
}
else
{
SET_TS_VALUE(m_TextureStateChanges[GFXTS_ADDRESSU], U);
SET_TS_VALUE(m_TextureStateChanges[GFXTS_ADDRESSV], V);
SET_TS_VALUE(m_TextureStateChanges[GFXTS_ADDRESSW], W);
}
#else
nuxAssertMsg(
(U == GL_CLAMP) ||
(U == GL_CLAMP_TO_EDGE) ||
(U == GL_CLAMP_TO_BORDER) ||
(U == GL_MIRRORED_REPEAT) ||
(U == GL_REPEAT),
"Error[GLTextureStates::SetWrap]: Invalid U Wrap State");
nuxAssertMsg(
(V == GL_CLAMP) ||
(V == GL_CLAMP_TO_EDGE) ||
(V == GL_CLAMP_TO_BORDER) ||
(V == GL_MIRRORED_REPEAT) ||
(V == GL_REPEAT),
"Error[GLTextureStates::SetWrap]: Invalid V Wrap State");
SET_TS_VALUE(m_TextureStateChanges[GFXTS_ADDRESSU], U);
SET_TS_VALUE(m_TextureStateChanges[GFXTS_ADDRESSV], V);
#endif
}
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);
}
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);
}
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
}
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