backend now supports 1D, 2D, 3D, and Cubemap texture binding
authorhavoc <havoc@d7cf8633-e32d-0410-b094-e92efae38249>
Sat, 5 Oct 2002 19:32:43 +0000 (19:32 +0000)
committerhavoc <havoc@d7cf8633-e32d-0410-b094-e92efae38249>
Sat, 5 Oct 2002 19:32:43 +0000 (19:32 +0000)
git-svn-id: svn://svn.icculus.org/twilight/trunk/darkplaces@2503 d7cf8633-e32d-0410-b094-e92efae38249

gl_backend.c
gl_backend.h

index 2a77e87..2de66cd 100644 (file)
@@ -253,6 +253,15 @@ void GL_SetupView_Mode_Ortho (double x1, double y1, double x2, double y2, double
        GL_SetupView_Orientation_Identity();
 }
 
+typedef struct gltextureunit_s
+{
+       unsigned int t1d, t2d, t3d, tcubemap;
+       unsigned int arrayenabled;
+       float rgbscale;
+       // FIXME: add more combine stuff
+}
+gltextureunit_t;
+
 static struct
 {
        int blendfunc1;
@@ -262,8 +271,7 @@ static struct
        int depthdisable;
        int unit;
        int clientunit;
-       int texture[MAX_TEXTUREUNITS];
-       float texturergbscale[MAX_TEXTUREUNITS];
+       gltextureunit_t units[MAX_TEXTUREUNITS];
        int colorarray;
 }
 gl_state;
@@ -271,114 +279,81 @@ gl_state;
 void GL_SetupTextureState(void)
 {
        int i;
-       if (backendunits > 1)
+       gltextureunit_t *unit;
+       for (i = 0;i < backendunits;i++)
        {
-               for (i = 0;i < backendunits;i++)
-               {
+               if (qglActiveTexture)
                        qglActiveTexture(GL_TEXTURE0_ARB + (gl_state.unit = i));CHECKGLERROR
-                       qglBindTexture(GL_TEXTURE_2D, gl_state.texture[i]);CHECKGLERROR
-                       if (gl_combine.integer)
-                       {
-                               qglTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE_ARB);CHECKGLERROR
-                               qglTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_RGB_ARB, GL_MODULATE);CHECKGLERROR
-                               qglTexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_RGB_ARB, GL_TEXTURE);CHECKGLERROR
-                               qglTexEnvi(GL_TEXTURE_ENV, GL_SOURCE1_RGB_ARB, GL_PREVIOUS_ARB);CHECKGLERROR
-                               qglTexEnvi(GL_TEXTURE_ENV, GL_SOURCE2_RGB_ARB, GL_CONSTANT_ARB);CHECKGLERROR
-                               qglTexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_RGB_ARB, GL_SRC_COLOR);CHECKGLERROR
-                               qglTexEnvi(GL_TEXTURE_ENV, GL_OPERAND1_RGB_ARB, GL_SRC_COLOR);CHECKGLERROR
-                               qglTexEnvi(GL_TEXTURE_ENV, GL_OPERAND2_RGB_ARB, GL_SRC_ALPHA);CHECKGLERROR
-                               qglTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_ALPHA_ARB, GL_MODULATE);CHECKGLERROR
-                               qglTexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_ALPHA_ARB, GL_TEXTURE);CHECKGLERROR
-                               qglTexEnvi(GL_TEXTURE_ENV, GL_SOURCE1_ALPHA_ARB, GL_PREVIOUS_ARB);CHECKGLERROR
-                               qglTexEnvi(GL_TEXTURE_ENV, GL_SOURCE2_ALPHA_ARB, GL_CONSTANT_ARB);CHECKGLERROR
-                               qglTexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_ALPHA_ARB, GL_SRC_ALPHA);CHECKGLERROR
-                               qglTexEnvi(GL_TEXTURE_ENV, GL_OPERAND1_ALPHA_ARB, GL_SRC_ALPHA);CHECKGLERROR
-                               qglTexEnvi(GL_TEXTURE_ENV, GL_OPERAND2_ALPHA_ARB, GL_SRC_ALPHA);CHECKGLERROR
-                               qglTexEnvi(GL_TEXTURE_ENV, GL_RGB_SCALE_ARB, gl_state.texturergbscale[i]);CHECKGLERROR
-                               qglTexEnvi(GL_TEXTURE_ENV, GL_ALPHA_SCALE, 1);CHECKGLERROR
-                       }
-                       else
-                       {
-                               qglTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);CHECKGLERROR
-                       }
-                       if (gl_state.texture[i])
-                       {
-                               qglEnable(GL_TEXTURE_2D);CHECKGLERROR
-                       }
-                       else
-                       {
-                               qglDisable(GL_TEXTURE_2D);CHECKGLERROR
-                       }
+               if (qglClientActiveTexture)
                        qglClientActiveTexture(GL_TEXTURE0_ARB + (gl_state.clientunit = i));CHECKGLERROR
-                       if (gl_texture3d)
-                               qglTexCoordPointer(3, GL_FLOAT, sizeof(float[4]), varray_texcoord[i]);CHECKGLERROR
-                       else
-                               qglTexCoordPointer(2, GL_FLOAT, sizeof(float[4]), varray_texcoord[i]);CHECKGLERROR
-                       if (gl_state.texture[i])
-                       {
-                               qglEnableClientState(GL_TEXTURE_COORD_ARRAY);CHECKGLERROR
-                       }
-                       else
-                       {
-                               qglDisableClientState(GL_TEXTURE_COORD_ARRAY);CHECKGLERROR
-                       }
-               }
-       }
-       else
-       {
-               qglBindTexture(GL_TEXTURE_2D, gl_state.texture[0]);CHECKGLERROR
-               qglTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);CHECKGLERROR
-               if (gl_state.texture[0])
+               unit = gl_state.units + i;
+               unit->t1d = 0;
+               unit->t2d = 0;
+               unit->t3d = 0;
+               unit->tcubemap = 0;
+               unit->rgbscale = 1;
+               unit->arrayenabled = false;
+               qglDisableClientState(GL_TEXTURE_COORD_ARRAY);CHECKGLERROR
+               if (gl_texture3d)
+                       qglTexCoordPointer(3, GL_FLOAT, sizeof(float[4]), varray_texcoord[i]);CHECKGLERROR
+               else
+                       qglTexCoordPointer(2, GL_FLOAT, sizeof(float[4]), varray_texcoord[i]);CHECKGLERROR
+               qglDisable(GL_TEXTURE_1D);CHECKGLERROR
+               qglDisable(GL_TEXTURE_2D);CHECKGLERROR
+               if (gl_texture3d)
                {
-                       qglEnable(GL_TEXTURE_2D);CHECKGLERROR
+                       qglDisable(GL_TEXTURE_3D_EXT);CHECKGLERROR
                }
-               else
+               if (gl_texturecubemap)
                {
-                       qglDisable(GL_TEXTURE_2D);CHECKGLERROR
+                       qglDisable(GL_TEXTURE_CUBE_MAP_ARB);CHECKGLERROR
                }
-               if (gl_texture3d)
-                       qglTexCoordPointer(3, GL_FLOAT, sizeof(float[4]), varray_texcoord[0]);CHECKGLERROR
-               else
-                       qglTexCoordPointer(2, GL_FLOAT, sizeof(float[4]), varray_texcoord[0]);CHECKGLERROR
-               if (gl_state.texture[0])
+               if (gl_combine.integer)
                {
-                       qglEnableClientState(GL_TEXTURE_COORD_ARRAY);CHECKGLERROR
+                       qglTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE_ARB);CHECKGLERROR
+                       qglTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_RGB_ARB, GL_MODULATE);CHECKGLERROR
+                       qglTexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_RGB_ARB, GL_TEXTURE);CHECKGLERROR
+                       qglTexEnvi(GL_TEXTURE_ENV, GL_SOURCE1_RGB_ARB, GL_PREVIOUS_ARB);CHECKGLERROR
+                       qglTexEnvi(GL_TEXTURE_ENV, GL_SOURCE2_RGB_ARB, GL_CONSTANT_ARB);CHECKGLERROR
+                       qglTexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_RGB_ARB, GL_SRC_COLOR);CHECKGLERROR
+                       qglTexEnvi(GL_TEXTURE_ENV, GL_OPERAND1_RGB_ARB, GL_SRC_COLOR);CHECKGLERROR
+                       qglTexEnvi(GL_TEXTURE_ENV, GL_OPERAND2_RGB_ARB, GL_SRC_ALPHA);CHECKGLERROR
+                       qglTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_ALPHA_ARB, GL_MODULATE);CHECKGLERROR
+                       qglTexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_ALPHA_ARB, GL_TEXTURE);CHECKGLERROR
+                       qglTexEnvi(GL_TEXTURE_ENV, GL_SOURCE1_ALPHA_ARB, GL_PREVIOUS_ARB);CHECKGLERROR
+                       qglTexEnvi(GL_TEXTURE_ENV, GL_SOURCE2_ALPHA_ARB, GL_CONSTANT_ARB);CHECKGLERROR
+                       qglTexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_ALPHA_ARB, GL_SRC_ALPHA);CHECKGLERROR
+                       qglTexEnvi(GL_TEXTURE_ENV, GL_OPERAND1_ALPHA_ARB, GL_SRC_ALPHA);CHECKGLERROR
+                       qglTexEnvi(GL_TEXTURE_ENV, GL_OPERAND2_ALPHA_ARB, GL_SRC_ALPHA);CHECKGLERROR
+                       qglTexEnvi(GL_TEXTURE_ENV, GL_RGB_SCALE_ARB, 1);CHECKGLERROR
+                       qglTexEnvi(GL_TEXTURE_ENV, GL_ALPHA_SCALE, 1);CHECKGLERROR
                }
                else
                {
-                       qglDisableClientState(GL_TEXTURE_COORD_ARRAY);CHECKGLERROR
+                       qglTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);CHECKGLERROR
                }
        }
 }
 
 void GL_Backend_ResetState(void)
 {
-       int i;
-       gl_state.unit = 0;
-       gl_state.clientunit = 0;
+       memset(&gl_state, 0, sizeof(gl_state));
+       gl_state.depthdisable = false;
+       gl_state.blendfunc1 = GL_ONE;
+       gl_state.blendfunc2 = GL_ZERO;
+       gl_state.blend = false;
+       gl_state.depthmask = GL_TRUE;
+       gl_state.colorarray = false;
 
-       for (i = 0;i < backendunits;i++)
-       {
-               gl_state.texture[i] = 0;
-               gl_state.texturergbscale[i] = 1;
-       }
+       qglDisableClientState(GL_COLOR_ARRAY);CHECKGLERROR
+       qglDisableClientState(GL_VERTEX_ARRAY);CHECKGLERROR
 
        qglEnable(GL_CULL_FACE);CHECKGLERROR
        qglCullFace(GL_FRONT);CHECKGLERROR
-
-       gl_state.depthdisable = false;
        qglEnable(GL_DEPTH_TEST);CHECKGLERROR
-
-       gl_state.blendfunc1 = GL_ONE;
-       gl_state.blendfunc2 = GL_ZERO;
        qglBlendFunc(gl_state.blendfunc1, gl_state.blendfunc2);CHECKGLERROR
-
-       gl_state.blend = 0;
        qglDisable(GL_BLEND);CHECKGLERROR
-
-       gl_state.depthmask = GL_TRUE;
        qglDepthMask(gl_state.depthmask);CHECKGLERROR
-
        qglVertexPointer(3, GL_FLOAT, sizeof(float[4]), varray_vertex);CHECKGLERROR
        qglEnableClientState(GL_VERTEX_ARRAY);CHECKGLERROR
        if (gl_mesh_floatcolors.integer)
@@ -389,8 +364,6 @@ void GL_Backend_ResetState(void)
        {
                qglColorPointer(4, GL_UNSIGNED_BYTE, sizeof(qbyte[4]), varray_bcolor);CHECKGLERROR
        }
-       // LordHavoc: default to color array off
-       gl_state.colorarray = false;
        GL_Color(1, 1, 1, 1);
 
        GL_SetupTextureState();
@@ -467,33 +440,6 @@ void GL_ConvertColorsFloatToByte(int numverts)
        }
 }
 
-/*
-void GL_TransformVertices(int numverts)
-{
-       int i;
-       float m[12], tempv[4], *v;
-       m[0] = backendmatrix.m[0][0];
-       m[1] = backendmatrix.m[0][1];
-       m[2] = backendmatrix.m[0][2];
-       m[3] = backendmatrix.m[0][3];
-       m[4] = backendmatrix.m[1][0];
-       m[5] = backendmatrix.m[1][1];
-       m[6] = backendmatrix.m[1][2];
-       m[7] = backendmatrix.m[1][3];
-       m[8] = backendmatrix.m[2][0];
-       m[9] = backendmatrix.m[2][1];
-       m[10] = backendmatrix.m[2][2];
-       m[11] = backendmatrix.m[2][3];
-       for (i = 0, v = varray_vertex;i < numverts;i++, v += 4)
-       {
-               VectorCopy(v, tempv);
-               v[0] = tempv[0] * m[0] + tempv[1] * m[1] + tempv[2] * m[2] + m[3];
-               v[1] = tempv[0] * m[4] + tempv[1] * m[5] + tempv[2] * m[6] + m[7];
-               v[2] = tempv[0] * m[8] + tempv[1] * m[9] + tempv[2] * m[10] + m[11];
-       }
-}
-*/
-
 void GL_DrawRangeElements(int firstvert, int endvert, int indexcount, int *index)
 {
        int arraylocked = false;
@@ -538,7 +484,6 @@ void R_Mesh_Draw(int numverts, int numtriangles, int *elements)
 
        if (gl_state.colorarray && !gl_mesh_floatcolors.integer)
                GL_ConvertColorsFloatToByte(numverts);
-       //GL_TransformVertices(numverts);
        if (!r_render.integer)
                return;
        GL_DrawRangeElements(0, numverts, numtriangles * 3, elements);
@@ -550,35 +495,28 @@ void R_Mesh_Finish(void)
        int i;
        BACKENDACTIVECHECK
 
-       if (backendunits > 1)
+       for (i = backendunits - 1;i >= 0;i--)
        {
-               for (i = backendunits - 1;i >= 0;i--)
-               {
+               if (qglActiveTexture)
                        qglActiveTexture(GL_TEXTURE0_ARB + i);CHECKGLERROR
-                       qglTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);CHECKGLERROR
-                       if (gl_combine.integer)
-                       {
-                               qglTexEnvi(GL_TEXTURE_ENV, GL_RGB_SCALE_ARB, 1);CHECKGLERROR
-                       }
-                       if (i > 0)
-                       {
-                               qglDisable(GL_TEXTURE_2D);CHECKGLERROR
-                       }
-                       else
-                       {
-                               qglEnable(GL_TEXTURE_2D);CHECKGLERROR
-                       }
-                       qglBindTexture(GL_TEXTURE_2D, 0);CHECKGLERROR
-
+               if (qglClientActiveTexture)
                        qglClientActiveTexture(GL_TEXTURE0_ARB + i);CHECKGLERROR
-                       qglDisableClientState(GL_TEXTURE_COORD_ARRAY);CHECKGLERROR
+               qglDisableClientState(GL_TEXTURE_COORD_ARRAY);CHECKGLERROR
+               qglDisable(GL_TEXTURE_1D);CHECKGLERROR
+               qglDisable(GL_TEXTURE_2D);CHECKGLERROR
+               if (gl_texture3d)
+               {
+                       qglDisable(GL_TEXTURE_3D_EXT);CHECKGLERROR
+               }
+               if (gl_texturecubemap)
+               {
+                       qglDisable(GL_TEXTURE_CUBE_MAP_ARB);CHECKGLERROR
                }
-       }
-       else
-       {
                qglTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);CHECKGLERROR
-               qglEnable(GL_TEXTURE_2D);CHECKGLERROR
-               qglDisableClientState(GL_TEXTURE_COORD_ARRAY);CHECKGLERROR
+               if (gl_combine.integer)
+               {
+                       qglTexEnvi(GL_TEXTURE_ENV, GL_RGB_SCALE_ARB, 1);CHECKGLERROR
+               }
        }
        qglDisableClientState(GL_COLOR_ARRAY);CHECKGLERROR
        qglDisableClientState(GL_VERTEX_ARRAY);CHECKGLERROR
@@ -653,7 +591,8 @@ void R_Mesh_MainState(const rmeshstate_t *m)
 void R_Mesh_TextureState(const rmeshstate_t *m)
 {
        int i;
-       int texturergbscale[MAX_TEXTUREUNITS];
+       float rgbscale;
+       gltextureunit_t *unit;
 
        BACKENDACTIVECHECK
 
@@ -665,35 +604,30 @@ void R_Mesh_TextureState(const rmeshstate_t *m)
 
        for (i = 0;i < backendunits;i++)
        {
-               if (m->texrgbscale[i])
-                       texturergbscale[i] = m->texrgbscale[i];
-               else
-                       texturergbscale[i] = 1;
-       }
-
-       if (backendunits > 1)
-       {
-               for (i = 0;i < backendunits;i++)
+               unit = gl_state.units + i;
+               if (unit->t1d != m->tex1d[i] || unit->t2d != m->tex[i] || unit->t3d != m->tex3d[i] || unit->tcubemap != m->texcubemap[i])
                {
-                       if (gl_state.texture[i] != m->tex[i])
+                       if (gl_state.unit != i)
                        {
-                               if (gl_state.unit != i)
-                               {
-                                       qglActiveTexture(GL_TEXTURE0_ARB + (gl_state.unit = i));CHECKGLERROR
-                               }
-                               if (gl_state.texture[i] == 0)
+                               qglActiveTexture(GL_TEXTURE0_ARB + (gl_state.unit = i));CHECKGLERROR
+                       }
+                       if (m->tex1d[i] || m->tex[i] || m->tex3d[i] || m->texcubemap[i])
+                       {
+                               if (!unit->arrayenabled)
                                {
-                                       qglEnable(GL_TEXTURE_2D);CHECKGLERROR
+                                       unit->arrayenabled = true;
                                        if (gl_state.clientunit != i)
                                        {
                                                qglClientActiveTexture(GL_TEXTURE0_ARB + (gl_state.clientunit = i));CHECKGLERROR
                                        }
                                        qglEnableClientState(GL_TEXTURE_COORD_ARRAY);CHECKGLERROR
                                }
-                               qglBindTexture(GL_TEXTURE_2D, (gl_state.texture[i] = m->tex[i]));CHECKGLERROR
-                               if (gl_state.texture[i] == 0)
+                       }
+                       else
+                       {
+                               if (unit->arrayenabled)
                                {
-                                       qglDisable(GL_TEXTURE_2D);CHECKGLERROR
+                                       unit->arrayenabled = false;
                                        if (gl_state.clientunit != i)
                                        {
                                                qglClientActiveTexture(GL_TEXTURE0_ARB + (gl_state.clientunit = i));CHECKGLERROR
@@ -701,31 +635,71 @@ void R_Mesh_TextureState(const rmeshstate_t *m)
                                        qglDisableClientState(GL_TEXTURE_COORD_ARRAY);CHECKGLERROR
                                }
                        }
-                       if (gl_state.texturergbscale[i] != texturergbscale[i])
+                       if (unit->t1d != m->tex1d[i])
                        {
-                               if (gl_state.unit != i)
+                               if (m->tex1d[i])
+                               {
+                                       if (unit->t1d == 0)
+                                               qglEnable(GL_TEXTURE_1D);CHECKGLERROR
+                               }
+                               else
                                {
-                                       qglActiveTexture(GL_TEXTURE0_ARB + (gl_state.unit = i));CHECKGLERROR
+                                       if (unit->t1d)
+                                               qglDisable(GL_TEXTURE_1D);CHECKGLERROR
                                }
-                               qglTexEnvi(GL_TEXTURE_ENV, GL_RGB_SCALE_ARB, (gl_state.texturergbscale[i] = texturergbscale[i]));CHECKGLERROR
+                               qglBindTexture(GL_TEXTURE_1D, (unit->t1d = m->tex1d[i]));CHECKGLERROR
                        }
-               }
-       }
-       else
-       {
-               if (gl_state.texture[0] != m->tex[0])
-               {
-                       if (gl_state.texture[0] == 0)
+                       if (unit->t2d != m->tex[i])
+                       {
+                               if (m->tex[i])
+                               {
+                                       if (unit->t2d == 0)
+                                               qglEnable(GL_TEXTURE_2D);CHECKGLERROR
+                               }
+                               else
+                               {
+                                       if (unit->t2d)
+                                               qglDisable(GL_TEXTURE_2D);CHECKGLERROR
+                               }
+                               qglBindTexture(GL_TEXTURE_2D, (unit->t2d = m->tex[i]));CHECKGLERROR
+                       }
+                       if (unit->t3d != m->tex3d[i])
                        {
-                               qglEnable(GL_TEXTURE_2D);CHECKGLERROR
-                               qglEnableClientState(GL_TEXTURE_COORD_ARRAY);CHECKGLERROR
+                               if (m->tex3d[i])
+                               {
+                                       if (unit->t3d == 0)
+                                               qglEnable(GL_TEXTURE_3D_EXT);CHECKGLERROR
+                               }
+                               else
+                               {
+                                       if (unit->t3d)
+                                               qglDisable(GL_TEXTURE_3D_EXT);CHECKGLERROR
+                               }
+                               qglBindTexture(GL_TEXTURE_3D_EXT, (unit->t3d = m->tex3d[i]));CHECKGLERROR
                        }
-                       qglBindTexture(GL_TEXTURE_2D, (gl_state.texture[0] = m->tex[0]));CHECKGLERROR
-                       if (gl_state.texture[0] == 0)
+                       if (unit->tcubemap != m->texcubemap[i])
+                       {
+                               if (m->texcubemap[i])
+                               {
+                                       if (unit->tcubemap == 0)
+                                               qglEnable(GL_TEXTURE_CUBE_MAP_ARB);CHECKGLERROR
+                               }
+                               else
+                               {
+                                       if (unit->tcubemap)
+                                               qglDisable(GL_TEXTURE_CUBE_MAP_ARB);CHECKGLERROR
+                               }
+                               qglBindTexture(GL_TEXTURE_CUBE_MAP_ARB, (unit->tcubemap = m->texcubemap[i]));CHECKGLERROR
+                       }
+               }
+               rgbscale = max(m->texrgbscale[i], 1);
+               if (gl_state.units[i].rgbscale != rgbscale)
+               {
+                       if (gl_state.unit != i)
                        {
-                               qglDisable(GL_TEXTURE_2D);CHECKGLERROR
-                               qglDisableClientState(GL_TEXTURE_COORD_ARRAY);CHECKGLERROR
+                               qglActiveTexture(GL_TEXTURE0_ARB + (gl_state.unit = i));CHECKGLERROR
                        }
+                       qglTexEnvi(GL_TEXTURE_ENV, GL_RGB_SCALE_ARB, (gl_state.units[i].rgbscale = rgbscale));CHECKGLERROR
                }
        }
 }
index 6a65201..a8f904c 100644 (file)
@@ -29,7 +29,10 @@ typedef struct
        int blendfunc1;
        int blendfunc2;
        //int wantoverbright;
+       int tex1d[MAX_TEXTUREUNITS];
        int tex[MAX_TEXTUREUNITS];
+       int tex3d[MAX_TEXTUREUNITS];
+       int texcubemap[MAX_TEXTUREUNITS];
        int texrgbscale[MAX_TEXTUREUNITS]; // used only if COMBINE is present
 }
 rmeshstate_t;