]> de.git.xonotic.org Git - xonotic/darkplaces.git/blobdiff - gl_backend.c
fixed some dynamic lighting bugs related to glowing self
[xonotic/darkplaces.git] / gl_backend.c
index 2ec09f0bc95c0d97e1866405a9bba87fe4ce67c9..c8ab4bef026ce66120b07b5e86a05c5a2ab03763 100644 (file)
@@ -1,5 +1,6 @@
 
 #include "quakedef.h"
+#include "image.h"
 
 cvar_t gl_mesh_maxverts = {0, "gl_mesh_maxverts", "1024"};
 cvar_t gl_mesh_floatcolors = {0, "gl_mesh_floatcolors", "1"};
@@ -104,7 +105,7 @@ void GL_Backend_AllocArrays(void)
        varray_color = Mem_Alloc(gl_backend_mempool, mesh_maxverts * sizeof(float[4]));
        varray_bcolor = Mem_Alloc(gl_backend_mempool, mesh_maxverts * sizeof(qbyte[4]));
        for (i = 0;i < backendunits;i++)
-               varray_texcoord[i] = Mem_Alloc(gl_backend_mempool, mesh_maxverts * sizeof(float[2]));
+               varray_texcoord[i] = Mem_Alloc(gl_backend_mempool, mesh_maxverts * sizeof(float[4]));
        for (;i < MAX_TEXTUREUNITS;i++)
                varray_texcoord[i] = NULL;
 }
@@ -221,7 +222,7 @@ void GL_SetupView_Orientation_FromEntity (vec3_t origin, vec3_t angles)
        memset(&backend_modelmatrix, 0, sizeof(backend_modelmatrix));
 }
 
-void GL_SetupView_Mode_Perspective (double aspect, double fovx, double fovy, double zNear, double zFar)
+void GL_SetupView_Mode_Perspective (double fovx, double fovy, double zNear, double zFar)
 {
        double xmax, ymax;
 
@@ -240,6 +241,39 @@ void GL_SetupView_Mode_Perspective (double aspect, double fovx, double fovy, dou
        GL_SetupView_Orientation_Identity();
 }
 
+void GL_SetupView_Mode_PerspectiveInfiniteFarClip (double fovx, double fovy, double zNear)
+{
+       double nudge, m[16];
+
+       if (!r_render.integer)
+               return;
+
+       // set up viewpoint
+       qglMatrixMode(GL_PROJECTION);CHECKGLERROR
+       qglLoadIdentity ();CHECKGLERROR
+       // set view pyramid
+       nudge = 1.0 - 1.0 / (1<<23);
+       m[ 0] = 1.0 / tan(fovx * M_PI / 360.0);
+       m[ 1] = 0;
+       m[ 2] = 0;
+       m[ 3] = 0;
+       m[ 4] = 0;
+       m[ 5] = 1.0 / tan(fovy * M_PI / 360.0);
+       m[ 6] = 0;
+       m[ 7] = 0;
+       m[ 8] = 0;
+       m[ 9] = 0;
+       m[10] = -1 * nudge;
+       m[11] = -1 * nudge;
+       m[12] = 0;
+       m[13] = 0;
+       m[14] = -2 * zNear * nudge;
+       m[15] = 0;
+       qglLoadMatrixd(m);
+       qglMatrixMode(GL_MODELVIEW);CHECKGLERROR
+       GL_SetupView_Orientation_Identity();
+}
+
 void GL_SetupView_Mode_Ortho (double x1, double y1, double x2, double y2, double zNear, double zFar)
 {
        if (!r_render.integer)
@@ -253,6 +287,16 @@ 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, alphascale;
+       int combinergb, combinealpha;
+       // FIXME: add more combine stuff
+}
+gltextureunit_t;
+
 static struct
 {
        int blendfunc1;
@@ -262,8 +306,7 @@ 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;
@@ -271,108 +314,88 @@ 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
-                       qglTexCoordPointer(2, GL_FLOAT, sizeof(float[2]), 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->alphascale = 1;
+               unit->combinergb = GL_MODULATE;
+               unit->combinealpha = GL_MODULATE;
+               unit->arrayenabled = false;
+               qglDisableClientState(GL_TEXTURE_COORD_ARRAY);CHECKGLERROR
+               if (gl_texture3d)
                {
-                       qglEnable(GL_TEXTURE_2D);CHECKGLERROR
+                       qglTexCoordPointer(3, GL_FLOAT, sizeof(float[4]), varray_texcoord[i]);CHECKGLERROR
                }
                else
                {
-                       qglDisable(GL_TEXTURE_2D);CHECKGLERROR
+                       qglTexCoordPointer(2, GL_FLOAT, sizeof(float[4]), varray_texcoord[i]);CHECKGLERROR
+               }
+               qglDisable(GL_TEXTURE_1D);CHECKGLERROR
+               qglDisable(GL_TEXTURE_2D);CHECKGLERROR
+               if (gl_texture3d)
+               {
+                       qglDisable(GL_TEXTURE_3D);CHECKGLERROR
                }
-               qglTexCoordPointer(2, GL_FLOAT, sizeof(float[2]), varray_texcoord[0]);CHECKGLERROR
-               if (gl_state.texture[0])
+               if (gl_texturecubemap)
                {
-                       qglEnableClientState(GL_TEXTURE_COORD_ARRAY);CHECKGLERROR
+                       qglDisable(GL_TEXTURE_CUBE_MAP_ARB);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, 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)
@@ -383,8 +406,6 @@ 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();
@@ -461,38 +482,16 @@ 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)
+void GL_DrawRangeElements(int firstvert, int endvert, int indexcount, const int *index)
 {
        int arraylocked = false;
        c_meshs++;
        c_meshelements += indexcount;
+       if (indexcount == 0 || endvert == firstvert)
+       {
+               Con_Printf("GL_DrawRangeElements(%d, %d, %d, %08p);\n", firstvert, endvert, indexcount, index);
+               return;
+       }
        if (gl_supportslockarrays && gl_lockarrays.integer)
        {
                qglLockArraysEXT(firstvert, endvert - firstvert);
@@ -500,9 +499,9 @@ void GL_DrawRangeElements(int firstvert, int endvert, int indexcount, int *index
                arraylocked = true;
        }
        if (gl_mesh_drawrangeelements.integer && qglDrawRangeElements != NULL)
-               qglDrawRangeElements(GL_TRIANGLES, firstvert, endvert, indexcount, GL_UNSIGNED_INT, (GLuint *) index);
+               qglDrawRangeElements(GL_TRIANGLES, firstvert, endvert, indexcount, GL_UNSIGNED_INT, (const GLuint *) index);
        else
-               qglDrawElements(GL_TRIANGLES, indexcount, GL_UNSIGNED_INT, (GLuint *) index);
+               qglDrawElements(GL_TRIANGLES, indexcount, GL_UNSIGNED_INT, (const GLuint *) index);
        CHECKGLERROR
        if (arraylocked)
        {
@@ -524,7 +523,7 @@ void _R_Mesh_ResizeCheck(int numverts)
 }
 
 // renders the mesh
-void R_Mesh_Draw(int numverts, int numtriangles, int *elements)
+void R_Mesh_Draw(int numverts, int numtriangles, const int *elements)
 {
        BACKENDACTIVECHECK
 
@@ -532,7 +531,6 @@ 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);
@@ -544,35 +542,29 @@ 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);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
+                       qglTexEnvi(GL_TEXTURE_ENV, GL_ALPHA_SCALE, 1);CHECKGLERROR
+               }
        }
        qglDisableClientState(GL_COLOR_ARRAY);CHECKGLERROR
        qglDisableClientState(GL_VERTEX_ARRAY);CHECKGLERROR
@@ -646,8 +638,9 @@ void R_Mesh_MainState(const rmeshstate_t *m)
 
 void R_Mesh_TextureState(const rmeshstate_t *m)
 {
-       int i;
-       int texturergbscale[MAX_TEXTUREUNITS];
+       int i, combinergb, combinealpha;
+       float scale;
+       gltextureunit_t *unit;
 
        BACKENDACTIVECHECK
 
@@ -659,35 +652,30 @@ 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
@@ -695,31 +683,106 @@ void R_Mesh_TextureState(const rmeshstate_t *m)
                                        qglDisableClientState(GL_TEXTURE_COORD_ARRAY);CHECKGLERROR
                                }
                        }
-                       if (gl_state.texturergbscale[i] != texturergbscale[i])
+                       combinergb = m->texcombinergb[i];
+                       combinealpha = m->texcombinealpha[i];
+                       if (!combinergb)
+                               combinergb = GL_MODULATE;
+                       if (!combinealpha)
+                               combinealpha = GL_MODULATE;
+                       if (unit->combinergb != combinergb)
                        {
-                               if (gl_state.unit != i)
+                               unit->combinergb = combinergb;
+                               if (gl_combine.integer)
                                {
-                                       qglActiveTexture(GL_TEXTURE0_ARB + (gl_state.unit = i));CHECKGLERROR
+                                       qglTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_RGB_ARB, unit->combinergb);CHECKGLERROR
                                }
-                               qglTexEnvi(GL_TEXTURE_ENV, GL_RGB_SCALE_ARB, (gl_state.texturergbscale[i] = texturergbscale[i]));CHECKGLERROR
+                               else
+                               {
+                                       qglTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, unit->combinergb);CHECKGLERROR
+                               }
+                       }
+                       if (unit->combinealpha != combinealpha)
+                       {
+                               unit->combinealpha = combinealpha;
+                               if (gl_combine.integer)
+                               {
+                                       qglTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_ALPHA_ARB, unit->combinealpha);CHECKGLERROR
+                               }
+                       }
+                       if (unit->t1d != m->tex1d[i])
+                       {
+                               if (m->tex1d[i])
+                               {
+                                       if (unit->t1d == 0)
+                                               qglEnable(GL_TEXTURE_1D);CHECKGLERROR
+                               }
+                               else
+                               {
+                                       if (unit->t1d)
+                                               qglDisable(GL_TEXTURE_1D);CHECKGLERROR
+                               }
+                               qglBindTexture(GL_TEXTURE_1D, (unit->t1d = m->tex1d[i]));CHECKGLERROR
+                       }
+                       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])
+                       {
+                               if (m->tex3d[i])
+                               {
+                                       if (unit->t3d == 0)
+                                               qglEnable(GL_TEXTURE_3D);CHECKGLERROR
+                               }
+                               else
+                               {
+                                       if (unit->t3d)
+                                               qglDisable(GL_TEXTURE_3D);CHECKGLERROR
+                               }
+                               qglBindTexture(GL_TEXTURE_3D, (unit->t3d = m->tex3d[i]));CHECKGLERROR
+                       }
+                       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
                        }
                }
-       }
-       else
-       {
-               if (gl_state.texture[0] != m->tex[0])
+               scale = max(m->texrgbscale[i], 1);
+               if (gl_state.units[i].rgbscale != scale)
                {
-                       if (gl_state.texture[0] == 0)
+                       if (gl_state.unit != i)
                        {
-                               qglEnable(GL_TEXTURE_2D);CHECKGLERROR
-                               qglEnableClientState(GL_TEXTURE_COORD_ARRAY);CHECKGLERROR
+                               qglActiveTexture(GL_TEXTURE0_ARB + (gl_state.unit = i));CHECKGLERROR
                        }
-                       qglBindTexture(GL_TEXTURE_2D, (gl_state.texture[0] = m->tex[0]));CHECKGLERROR
-                       if (gl_state.texture[0] == 0)
+                       qglTexEnvi(GL_TEXTURE_ENV, GL_RGB_SCALE_ARB, (gl_state.units[i].rgbscale = scale));CHECKGLERROR
+               }
+               scale = max(m->texalphascale[i], 1);
+               if (gl_state.units[i].alphascale != scale)
+               {
+                       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_ALPHA_SCALE, (gl_state.units[i].alphascale = scale));CHECKGLERROR
                }
        }
 }
@@ -771,7 +834,7 @@ void R_ClearScreen(void)
                // clear to black
                qglClearColor(0,0,0,0);CHECKGLERROR
                // clear the screen
-               qglClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);CHECKGLERROR
+               qglClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | (gl_stencil ? GL_STENCIL_BUFFER_BIT : 0));CHECKGLERROR
                // set dithering mode
                if (gl_dither.integer)
                {