X-Git-Url: http://de.git.xonotic.org/?a=blobdiff_plain;f=gl_backend.c;h=fd0cff613e8df66800017698f81f271da3ed2e52;hb=4dddc90545f4973249f1e0a0e1c0e81747866799;hp=07fcfdbb3e92c7ab2dfcf4f4876fcb8b6373f7bd;hpb=7b8f49385f919ad208c994f0bfd7c50de538b2b9;p=xonotic%2Fdarkplaces.git

diff --git a/gl_backend.c b/gl_backend.c
index 07fcfdbb..fd0cff61 100644
--- a/gl_backend.c
+++ b/gl_backend.c
@@ -14,14 +14,22 @@ cvar_t r_renderview = {0, "r_renderview", "1", "enables rendering 3D views (you
 cvar_t r_waterwarp = {CVAR_SAVE, "r_waterwarp", "1", "warp view while underwater"};
 cvar_t gl_polyblend = {CVAR_SAVE, "gl_polyblend", "1", "tints view while underwater, hurt, etc"};
 cvar_t gl_dither = {CVAR_SAVE, "gl_dither", "1", "enables OpenGL dithering (16bit looks bad with this off)"};
-cvar_t gl_lockarrays = {0, "gl_lockarrays", "0", "enables use of glLockArraysEXT, may cause glitches with some broken drivers, and may be slower than normal"};
-cvar_t gl_lockarrays_minimumvertices = {0, "gl_lockarrays_minimumvertices", "1", "minimum number of vertices required for use of glLockArraysEXT, setting this too low may reduce performance"};
 cvar_t gl_vbo = {CVAR_SAVE, "gl_vbo", "3", "make use of GL_ARB_vertex_buffer_object extension to store static geometry in video memory for faster rendering, 0 disables VBO allocation or use, 1 enables VBOs for vertex and triangle data, 2 only for vertex data, 3 for vertex data and triangle data of simple meshes (ones with only one surface)"};
 cvar_t gl_fbo = {CVAR_SAVE, "gl_fbo", "1", "make use of GL_ARB_framebuffer_object extension to enable shadowmaps and other features using pixel formats different from the framebuffer"};
 
 cvar_t v_flipped = {0, "v_flipped", "0", "mirror the screen (poor man's left handed mode)"};
 qboolean v_flipped_state = false;
 
+r_viewport_t gl_viewport;
+matrix4x4_t gl_modelmatrix;
+matrix4x4_t gl_viewmatrix;
+matrix4x4_t gl_modelviewmatrix;
+matrix4x4_t gl_projectionmatrix;
+matrix4x4_t gl_modelviewprojectionmatrix;
+float gl_modelview16f[16];
+float gl_modelviewprojection16f[16];
+qboolean gl_modelmatrixchanged;
+
 int gl_maxdrawrangeelementsvertices;
 int gl_maxdrawrangeelementsindices;
 
@@ -101,6 +109,7 @@ typedef struct gltextureunit_s
 	int arrayenabled;
 	unsigned int arraycomponents;
 	int rgbscale, alphascale;
+	int combine;
 	int combinergb, combinealpha;
 	// texmatrixenabled exists only to avoid unnecessary texmatrix compares
 	int texmatrixenabled;
@@ -137,17 +146,15 @@ typedef struct gl_state_s
 	size_t pointer_color_offset;
 	int pointer_vertex_buffer;
 	int pointer_color_buffer;
+
+	memexpandablearray_t bufferobjectinfoarray;
+
 	qboolean active;
 }
 gl_state_t;
 
 static gl_state_t gl_state;
 
-static memexpandablearray_t gl_bufferobjectinfoarray;
-
-static r_viewport_t backend_viewport;
-static matrix4x4_t backend_modelmatrix;
-static matrix4x4_t backend_modelviewmatrix;
 
 /*
 note: here's strip order for a terrain row:
@@ -217,44 +224,22 @@ static void GL_Backend_ResetState(void);
 
 static void gl_backend_start(void)
 {
-	CHECKGLERROR
-
-	if (qglDrawRangeElements != NULL)
-	{
-		CHECKGLERROR
-		qglGetIntegerv(GL_MAX_ELEMENTS_VERTICES, &gl_maxdrawrangeelementsvertices);
-		CHECKGLERROR
-		qglGetIntegerv(GL_MAX_ELEMENTS_INDICES, &gl_maxdrawrangeelementsindices);
-		CHECKGLERROR
-		Con_DPrintf("GL_MAX_ELEMENTS_VERTICES = %i\nGL_MAX_ELEMENTS_INDICES = %i\n", gl_maxdrawrangeelementsvertices, gl_maxdrawrangeelementsindices);
-	}
-
-	if (vid.support.arb_fragment_shader)
-	{
-		Con_DPrintf("GLSL shader support detected: texture units = %i texenv, %i image, %i array\n", vid.texunits, vid.teximageunits, vid.texarrayunits);
-		vid.teximageunits = bound(1, vid.teximageunits, MAX_TEXTUREUNITS);
-		vid.texarrayunits = bound(1, vid.texarrayunits, MAX_TEXTUREUNITS);
-	}
-	else
-		Con_DPrintf("GL_MAX_TEXTUREUNITS = %i\n", vid.texunits);
+	memset(&gl_state, 0, sizeof(gl_state));
 
-	Mem_ExpandableArray_NewArray(&gl_bufferobjectinfoarray, r_main_mempool, sizeof(gl_bufferobjectinfo_t), 128);
+	Mem_ExpandableArray_NewArray(&gl_state.bufferobjectinfoarray, r_main_mempool, sizeof(gl_bufferobjectinfo_t), 128);
 
 	Con_DPrintf("OpenGL backend started.\n");
 
 	CHECKGLERROR
 
-	gl_state.active = true;
 	GL_Backend_ResetState();
 }
 
 static void gl_backend_shutdown(void)
 {
-	gl_state.active = false;
-
 	Con_DPrint("OpenGL Backend shutting down\n");
 
-	Mem_ExpandableArray_FreeArray(&gl_bufferobjectinfoarray);
+	Mem_ExpandableArray_FreeArray(&gl_state.bufferobjectinfoarray);
 
 	memset(&gl_state, 0, sizeof(gl_state));
 }
@@ -295,8 +280,6 @@ void gl_backend_init(void)
 	Cvar_RegisterVariable(&gl_polyblend);
 	Cvar_RegisterVariable(&v_flipped);
 	Cvar_RegisterVariable(&gl_dither);
-	Cvar_RegisterVariable(&gl_lockarrays);
-	Cvar_RegisterVariable(&gl_lockarrays_minimumvertices);
 	Cvar_RegisterVariable(&gl_vbo);
 	Cvar_RegisterVariable(&gl_paranoid);
 	Cvar_RegisterVariable(&gl_printcheckerror);
@@ -325,10 +308,10 @@ void R_Viewport_TransformToScreen(const r_viewport_t *v, const vec4_t in, vec4_t
 	out[2] = v->z + (out[2] * iw + 1.0f) * v->depth * 0.5f;
 }
 
-static void R_Viewport_ApplyNearClipPlane(r_viewport_t *v, double normalx, double normaly, double normalz, double dist)
+static void R_Viewport_ApplyNearClipPlaneFloatGL(const r_viewport_t *v, float *m, float normalx, float normaly, float normalz, float dist)
 {
-	double q[4];
-	double d;
+	float q[4];
+	float d;
 	float clipPlane[4], v3[3], v4[3];
 	float normal[3];
 
@@ -346,7 +329,7 @@ static void R_Viewport_ApplyNearClipPlane(r_viewport_t *v, double normalx, doubl
 	// testing code for comparing results
 	float clipPlane2[4];
 	VectorCopy4(clipPlane, clipPlane2);
-	R_Mesh_Matrix(&identitymatrix);
+	R_EntityMatrix(&identitymatrix);
 	VectorSet(q, normal[0], normal[1], normal[2], -dist);
 	qglClipPlane(GL_CLIP_PLANE0, q);
 	qglGetClipPlane(GL_CLIP_PLANE0, q);
@@ -358,24 +341,25 @@ static void R_Viewport_ApplyNearClipPlane(r_viewport_t *v, double normalx, doubl
 	// as (sgn(clipPlane.x), sgn(clipPlane.y), 1, 1) and
 	// transform it into camera space by multiplying it
 	// by the inverse of the projection matrix
-	q[0] = ((clipPlane[0] < 0.0f ? -1.0f : clipPlane[0] > 0.0f ? 1.0f : 0.0f) + v->m[8]) / v->m[0];
-	q[1] = ((clipPlane[1] < 0.0f ? -1.0f : clipPlane[1] > 0.0f ? 1.0f : 0.0f) + v->m[9]) / v->m[5];
+	q[0] = ((clipPlane[0] < 0.0f ? -1.0f : clipPlane[0] > 0.0f ? 1.0f : 0.0f) + m[8]) / m[0];
+	q[1] = ((clipPlane[1] < 0.0f ? -1.0f : clipPlane[1] > 0.0f ? 1.0f : 0.0f) + m[9]) / m[5];
 	q[2] = -1.0f;
-	q[3] = (1.0f + v->m[10]) / v->m[14];
+	q[3] = (1.0f + m[10]) / m[14];
 
 	// Calculate the scaled plane vector
 	d = 2.0f / DotProduct4(clipPlane, q);
 
 	// Replace the third row of the projection matrix
-	v->m[2] = clipPlane[0] * d;
-	v->m[6] = clipPlane[1] * d;
-	v->m[10] = clipPlane[2] * d + 1.0f;
-	v->m[14] = clipPlane[3] * d;
+	m[2] = clipPlane[0] * d;
+	m[6] = clipPlane[1] * d;
+	m[10] = clipPlane[2] * d + 1.0f;
+	m[14] = clipPlane[3] * d;
 }
 
-void R_Viewport_InitOrtho(r_viewport_t *v, const matrix4x4_t *cameramatrix, int x, int y, int width, int height, double x1, double y1, double x2, double y2, double nearclip, double farclip, const double *nearplane)
+void R_Viewport_InitOrtho(r_viewport_t *v, const matrix4x4_t *cameramatrix, int x, int y, int width, int height, float x1, float y1, float x2, float y2, float nearclip, float farclip, const float *nearplane)
 {
 	float left = x1, right = x2, bottom = y2, top = y1, zNear = nearclip, zFar = farclip;
+	float m[16];
 	memset(v, 0, sizeof(*v));
 	v->type = R_VIEWPORTTYPE_ORTHO;
 	v->cameramatrix = *cameramatrix;
@@ -385,19 +369,23 @@ void R_Viewport_InitOrtho(r_viewport_t *v, const matrix4x4_t *cameramatrix, int
 	v->width = width;
 	v->height = height;
 	v->depth = 1;
-	v->m[0]  = 2/(right - left);
-	v->m[5]  = 2/(top - bottom);
-	v->m[10] = -2/(zFar - zNear);
-	v->m[12] = - (right + left)/(right - left);
-	v->m[13] = - (top + bottom)/(top - bottom);
-	v->m[14] = - (zFar + zNear)/(zFar - zNear);
-	v->m[15] = 1;
+	memset(m, 0, sizeof(m));
+	m[0]  = 2/(right - left);
+	m[5]  = 2/(top - bottom);
+	m[10] = -2/(zFar - zNear);
+	m[12] = - (right + left)/(right - left);
+	m[13] = - (top + bottom)/(top - bottom);
+	m[14] = - (zFar + zNear)/(zFar - zNear);
+	m[15] = 1;
+	v->screentodepth[0] = -farclip / (farclip - nearclip);
+	v->screentodepth[1] = farclip * nearclip / (farclip - nearclip);
 
 	Matrix4x4_Invert_Full(&v->viewmatrix, &v->cameramatrix);
-	Matrix4x4_FromArrayDoubleGL(&v->projectmatrix, v->m);
 
 	if (nearplane)
-		R_Viewport_ApplyNearClipPlane(v, nearplane[0], nearplane[1], nearplane[2], nearplane[3]);
+		R_Viewport_ApplyNearClipPlaneFloatGL(v, m, nearplane[0], nearplane[1], nearplane[2], nearplane[3]);
+
+	Matrix4x4_FromArrayFloatGL(&v->projectmatrix, m);
 
 #if 0
 	{
@@ -410,9 +398,10 @@ void R_Viewport_InitOrtho(r_viewport_t *v, const matrix4x4_t *cameramatrix, int
 #endif
 }
 
-void R_Viewport_InitPerspective(r_viewport_t *v, const matrix4x4_t *cameramatrix, int x, int y, int width, int height, double frustumx, double frustumy, double nearclip, double farclip, const double *nearplane)
+void R_Viewport_InitPerspective(r_viewport_t *v, const matrix4x4_t *cameramatrix, int x, int y, int width, int height, float frustumx, float frustumy, float nearclip, float farclip, const float *nearplane)
 {
 	matrix4x4_t tempmatrix, basematrix;
+	float m[16];
 	memset(v, 0, sizeof(*v));
 
 	if(v_flipped.integer)
@@ -426,27 +415,31 @@ void R_Viewport_InitPerspective(r_viewport_t *v, const matrix4x4_t *cameramatrix
 	v->width = width;
 	v->height = height;
 	v->depth = 1;
-	v->m[0]  = 1.0 / frustumx;
-	v->m[5]  = 1.0 / frustumy;
-	v->m[10] = -(farclip + nearclip) / (farclip - nearclip);
-	v->m[11] = -1;
-	v->m[14] = -2 * nearclip * farclip / (farclip - nearclip);
+	memset(m, 0, sizeof(m));
+	m[0]  = 1.0 / frustumx;
+	m[5]  = 1.0 / frustumy;
+	m[10] = -(farclip + nearclip) / (farclip - nearclip);
+	m[11] = -1;
+	m[14] = -2 * nearclip * farclip / (farclip - nearclip);
+	v->screentodepth[0] = -farclip / (farclip - nearclip);
+	v->screentodepth[1] = farclip * nearclip / (farclip - nearclip);
 
 	Matrix4x4_Invert_Full(&tempmatrix, &v->cameramatrix);
 	Matrix4x4_CreateRotate(&basematrix, -90, 1, 0, 0);
 	Matrix4x4_ConcatRotate(&basematrix, 90, 0, 0, 1);
 	Matrix4x4_Concat(&v->viewmatrix, &basematrix, &tempmatrix);
 
-	Matrix4x4_FromArrayDoubleGL(&v->projectmatrix, v->m);
-
 	if (nearplane)
-		R_Viewport_ApplyNearClipPlane(v, nearplane[0], nearplane[1], nearplane[2], nearplane[3]);
+		R_Viewport_ApplyNearClipPlaneFloatGL(v, m, nearplane[0], nearplane[1], nearplane[2], nearplane[3]);
+
+	Matrix4x4_FromArrayFloatGL(&v->projectmatrix, m);
 }
 
-void R_Viewport_InitPerspectiveInfinite(r_viewport_t *v, const matrix4x4_t *cameramatrix, int x, int y, int width, int height, double frustumx, double frustumy, double nearclip, const double *nearplane)
+void R_Viewport_InitPerspectiveInfinite(r_viewport_t *v, const matrix4x4_t *cameramatrix, int x, int y, int width, int height, float frustumx, float frustumy, float nearclip, const float *nearplane)
 {
 	matrix4x4_t tempmatrix, basematrix;
-	const double nudge = 1.0 - 1.0 / (1<<23);
+	const float nudge = 1.0 - 1.0 / (1<<23);
+	float m[16];
 	memset(v, 0, sizeof(*v));
 
 	if(v_flipped.integer)
@@ -460,21 +453,24 @@ void R_Viewport_InitPerspectiveInfinite(r_viewport_t *v, const matrix4x4_t *came
 	v->width = width;
 	v->height = height;
 	v->depth = 1;
-	v->m[ 0] = 1.0 / frustumx;
-	v->m[ 5] = 1.0 / frustumy;
-	v->m[10] = -nudge;
-	v->m[11] = -1;
-	v->m[14] = -2 * nearclip * nudge;
+	memset(m, 0, sizeof(m));
+	m[ 0] = 1.0 / frustumx;
+	m[ 5] = 1.0 / frustumy;
+	m[10] = -nudge;
+	m[11] = -1;
+	m[14] = -2 * nearclip * nudge;
+	v->screentodepth[0] = (m[10] + 1) * 0.5 - 1;
+	v->screentodepth[1] = m[14] * -0.5;
 
 	Matrix4x4_Invert_Full(&tempmatrix, &v->cameramatrix);
 	Matrix4x4_CreateRotate(&basematrix, -90, 1, 0, 0);
 	Matrix4x4_ConcatRotate(&basematrix, 90, 0, 0, 1);
 	Matrix4x4_Concat(&v->viewmatrix, &basematrix, &tempmatrix);
 
-	Matrix4x4_FromArrayDoubleGL(&v->projectmatrix, v->m);
-
 	if (nearplane)
-		R_Viewport_ApplyNearClipPlane(v, nearplane[0], nearplane[1], nearplane[2], nearplane[3]);
+		R_Viewport_ApplyNearClipPlaneFloatGL(v, m, nearplane[0], nearplane[1], nearplane[2], nearplane[3]);
+
+	Matrix4x4_FromArrayFloatGL(&v->projectmatrix, m);
 }
 
 float cubeviewmatrix[6][16] =
@@ -561,29 +557,33 @@ float rectviewmatrix[6][16] =
 void R_Viewport_InitCubeSideView(r_viewport_t *v, const matrix4x4_t *cameramatrix, int side, int size, float nearclip, float farclip, const float *nearplane)
 {
 	matrix4x4_t tempmatrix, basematrix;
+	float m[16];
 	memset(v, 0, sizeof(*v));
 	v->type = R_VIEWPORTTYPE_PERSPECTIVECUBESIDE;
 	v->cameramatrix = *cameramatrix;
 	v->width = size;
 	v->height = size;
 	v->depth = 1;
-	v->m[0] = v->m[5] = 1.0f;
-	v->m[10] = -(farclip + nearclip) / (farclip - nearclip);
-	v->m[11] = -1;
-	v->m[14] = -2 * nearclip * farclip / (farclip - nearclip);
+	memset(m, 0, sizeof(m));
+	m[0] = m[5] = 1.0f;
+	m[10] = -(farclip + nearclip) / (farclip - nearclip);
+	m[11] = -1;
+	m[14] = -2 * nearclip * farclip / (farclip - nearclip);
 
 	Matrix4x4_FromArrayFloatGL(&basematrix, cubeviewmatrix[side]);
 	Matrix4x4_Invert_Simple(&tempmatrix, &v->cameramatrix);
 	Matrix4x4_Concat(&v->viewmatrix, &basematrix, &tempmatrix);
-	Matrix4x4_FromArrayDoubleGL(&v->projectmatrix, v->m);
 
 	if (nearplane)
-		R_Viewport_ApplyNearClipPlane(v, nearplane[0], nearplane[1], nearplane[2], nearplane[3]);
+		R_Viewport_ApplyNearClipPlaneFloatGL(v, m, nearplane[0], nearplane[1], nearplane[2], nearplane[3]);
+
+	Matrix4x4_FromArrayFloatGL(&v->projectmatrix, m);
 }
 
 void R_Viewport_InitRectSideView(r_viewport_t *v, const matrix4x4_t *cameramatrix, int side, int size, int border, float nearclip, float farclip, const float *nearplane)
 {
 	matrix4x4_t tempmatrix, basematrix;
+	float m[16];
 	memset(v, 0, sizeof(*v));
 	v->type = R_VIEWPORTTYPE_PERSPECTIVECUBESIDE;
 	v->cameramatrix = *cameramatrix;
@@ -592,45 +592,60 @@ void R_Viewport_InitRectSideView(r_viewport_t *v, const matrix4x4_t *cameramatri
 	v->width = size;
 	v->height = size;
 	v->depth = 1;
-	v->m[0] = v->m[5] = 1.0f * ((float)size - border) / size;
-	v->m[10] = -(farclip + nearclip) / (farclip - nearclip);
-	v->m[11] = -1;
-	v->m[14] = -2 * nearclip * farclip / (farclip - nearclip);
+	memset(m, 0, sizeof(m));
+	m[0] = m[5] = 1.0f * ((float)size - border) / size;
+	m[10] = -(farclip + nearclip) / (farclip - nearclip);
+	m[11] = -1;
+	m[14] = -2 * nearclip * farclip / (farclip - nearclip);
 
 	Matrix4x4_FromArrayFloatGL(&basematrix, rectviewmatrix[side]);
 	Matrix4x4_Invert_Simple(&tempmatrix, &v->cameramatrix);
 	Matrix4x4_Concat(&v->viewmatrix, &basematrix, &tempmatrix);
-	Matrix4x4_FromArrayDoubleGL(&v->projectmatrix, v->m);
 
 	if (nearplane)
-		R_Viewport_ApplyNearClipPlane(v, nearplane[0], nearplane[1], nearplane[2], nearplane[3]);
+		R_Viewport_ApplyNearClipPlaneFloatGL(v, m, nearplane[0], nearplane[1], nearplane[2], nearplane[3]);
+
+	Matrix4x4_FromArrayFloatGL(&v->projectmatrix, m);
 }
 
 void R_SetViewport(const r_viewport_t *v)
 {
-	float glmatrix[16];
-	backend_viewport = *v;
+	float m[16];
+	gl_viewport = *v;
 
 	CHECKGLERROR
 	qglViewport(v->x, v->y, v->width, v->height);CHECKGLERROR
 
-	// Load the projection matrix into OpenGL
-	qglMatrixMode(GL_PROJECTION);CHECKGLERROR
-	qglLoadMatrixd(backend_viewport.m);CHECKGLERROR
-	qglMatrixMode(GL_MODELVIEW);CHECKGLERROR
-
 	// FIXME: v_flipped_state is evil, this probably breaks somewhere
 	GL_SetMirrorState(v_flipped.integer && (v->type == R_VIEWPORTTYPE_PERSPECTIVE || v->type == R_VIEWPORTTYPE_PERSPECTIVE_INFINITEFARCLIP));
 
-	// directly force an update of the modelview matrix
-	Matrix4x4_Concat(&backend_modelviewmatrix, &backend_viewport.viewmatrix, &backend_modelmatrix);
-	Matrix4x4_ToArrayFloatGL(&backend_modelviewmatrix, glmatrix);
-	qglLoadMatrixf(glmatrix);CHECKGLERROR
+	// copy over the matrices to our state
+	gl_viewmatrix = v->viewmatrix;
+	gl_projectionmatrix = v->projectmatrix;
+
+	switch(vid.renderpath)
+	{
+	case RENDERPATH_GL20:
+	case RENDERPATH_CGGL:
+//		break;
+	case RENDERPATH_GL13:
+	case RENDERPATH_GL11:
+		// Load the projection matrix into OpenGL
+		qglMatrixMode(GL_PROJECTION);CHECKGLERROR
+		Matrix4x4_ToArrayFloatGL(&gl_projectionmatrix, m);
+		qglLoadMatrixf(m);CHECKGLERROR
+		qglMatrixMode(GL_MODELVIEW);CHECKGLERROR
+		break;
+	}
+
+	// force an update of the derived matrices
+	gl_modelmatrixchanged = true;
+	R_EntityMatrix(&gl_modelmatrix);
 }
 
 void R_GetViewport(r_viewport_t *v)
 {
-	*v = backend_viewport;
+	*v = gl_viewport;
 }
 
 static void GL_BindVBO(int bufferobject)
@@ -658,8 +673,6 @@ static void GL_BindEBO(int bufferobject)
 static void GL_Backend_ResetState(void)
 {
 	unsigned int i;
-	gltextureunit_t *unit;
-	memset(&gl_state, 0, sizeof(gl_state));
 	gl_state.active = true;
 	gl_state.depthtest = true;
 	gl_state.alphatest = false;
@@ -713,88 +726,71 @@ static void GL_Backend_ResetState(void)
 
 	gl_state.unit = MAX_TEXTUREUNITS;
 	gl_state.clientunit = MAX_TEXTUREUNITS;
-	for (i = 0;i < MAX_TEXTUREUNITS;i++)
+	switch(vid.renderpath)
 	{
-		unit = gl_state.units + i;
-		unit->rgbscale = 1;
-		unit->alphascale = 1;
-		unit->combinergb = GL_MODULATE;
-		unit->combinealpha = GL_MODULATE;
-		unit->matrix = identitymatrix;
-	}
-
-	for (i = 0;i < vid.teximageunits;i++)
-	{
-		GL_ActiveTexture(i);
-		qglBindTexture(GL_TEXTURE_2D, 0);CHECKGLERROR
-		if (vid.support.ext_texture_3d)
+	case RENDERPATH_GL20:
+	case RENDERPATH_CGGL:
+		for (i = 0;i < vid.teximageunits;i++)
 		{
-			qglBindTexture(GL_TEXTURE_3D, 0);CHECKGLERROR
-		}
-		if (vid.support.arb_texture_cube_map)
-		{
-			qglBindTexture(GL_TEXTURE_CUBE_MAP_ARB, 0);CHECKGLERROR
-		}
-		if (vid.support.arb_texture_rectangle)
-		{
-			qglBindTexture(GL_TEXTURE_RECTANGLE_ARB, 0);CHECKGLERROR
+			GL_ActiveTexture(i);
+			qglBindTexture(GL_TEXTURE_2D, 0);CHECKGLERROR
+			if (vid.support.ext_texture_3d)
+			{
+				qglBindTexture(GL_TEXTURE_3D, 0);CHECKGLERROR
+			}
+			if (vid.support.arb_texture_cube_map)
+			{
+				qglBindTexture(GL_TEXTURE_CUBE_MAP_ARB, 0);CHECKGLERROR
+			}
+			if (vid.support.arb_texture_rectangle)
+			{
+				qglBindTexture(GL_TEXTURE_RECTANGLE_ARB, 0);CHECKGLERROR
+			}
 		}
-	}
 
-	for (i = 0;i < vid.texarrayunits;i++)
-	{
-		GL_ClientActiveTexture(i);
-		GL_BindVBO(0);
-		qglTexCoordPointer(2, GL_FLOAT, sizeof(float[2]), NULL);CHECKGLERROR
-		qglDisableClientState(GL_TEXTURE_COORD_ARRAY);CHECKGLERROR
-	}
-
-	for (i = 0;i < vid.texunits;i++)
-	{
-		GL_ActiveTexture(i);
-		qglDisable(GL_TEXTURE_2D);CHECKGLERROR
-		if (vid.support.ext_texture_3d)
-		{
-			qglDisable(GL_TEXTURE_3D);CHECKGLERROR
-		}
-		if (vid.support.arb_texture_cube_map)
-		{
-			qglDisable(GL_TEXTURE_CUBE_MAP_ARB);CHECKGLERROR
-		}
-		if (vid.support.arb_texture_rectangle)
-		{
-			qglDisable(GL_TEXTURE_RECTANGLE_ARB);CHECKGLERROR
-		}
-		qglMatrixMode(GL_TEXTURE);CHECKGLERROR
-		qglLoadIdentity();CHECKGLERROR
-		qglMatrixMode(GL_MODELVIEW);CHECKGLERROR
-		if (gl_combine.integer)
+		for (i = 0;i < vid.texarrayunits;i++)
 		{
-			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_TEXTURE);CHECKGLERROR // for GL_INTERPOLATE_ARB mode
-			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
+			GL_ClientActiveTexture(i);
+			GL_BindVBO(0);
+			qglTexCoordPointer(2, GL_FLOAT, sizeof(float[2]), NULL);CHECKGLERROR
+			qglDisableClientState(GL_TEXTURE_COORD_ARRAY);CHECKGLERROR
 		}
-		else
+		CHECKGLERROR
+		break;
+	case RENDERPATH_GL13:
+	case RENDERPATH_GL11:
+		for (i = 0;i < vid.texunits;i++)
 		{
+			GL_ActiveTexture(i);
+			GL_ClientActiveTexture(i);
+			qglDisable(GL_TEXTURE_2D);CHECKGLERROR
+			qglBindTexture(GL_TEXTURE_2D, 0);CHECKGLERROR
+			if (vid.support.ext_texture_3d)
+			{
+				qglDisable(GL_TEXTURE_3D);CHECKGLERROR
+				qglBindTexture(GL_TEXTURE_3D, 0);CHECKGLERROR
+			}
+			if (vid.support.arb_texture_cube_map)
+			{
+				qglDisable(GL_TEXTURE_CUBE_MAP_ARB);CHECKGLERROR
+				qglBindTexture(GL_TEXTURE_CUBE_MAP_ARB, 0);CHECKGLERROR
+			}
+			if (vid.support.arb_texture_rectangle)
+			{
+				qglDisable(GL_TEXTURE_RECTANGLE_ARB);CHECKGLERROR
+				qglBindTexture(GL_TEXTURE_RECTANGLE_ARB, 0);CHECKGLERROR
+			}
+			GL_BindVBO(0);
+			qglTexCoordPointer(2, GL_FLOAT, sizeof(float[2]), NULL);CHECKGLERROR
+			qglDisableClientState(GL_TEXTURE_COORD_ARRAY);CHECKGLERROR
+			qglMatrixMode(GL_TEXTURE);CHECKGLERROR
+			qglLoadIdentity();CHECKGLERROR
+			qglMatrixMode(GL_MODELVIEW);CHECKGLERROR
 			qglTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);CHECKGLERROR
 		}
 		CHECKGLERROR
+		break;
 	}
-	CHECKGLERROR
 }
 
 void GL_ActiveTexture(unsigned int num)
@@ -997,33 +993,6 @@ void GL_Color(float cr, float cg, float cb, float ca)
 	}
 }
 
-void GL_LockArrays(int first, int count)
-{
-	if (count < gl_lockarrays_minimumvertices.integer)
-	{
-		first = 0;
-		count = 0;
-	}
-	if (gl_state.lockrange_count != count || gl_state.lockrange_first != first)
-	{
-		if (gl_state.lockrange_count)
-		{
-			gl_state.lockrange_count = 0;
-			CHECKGLERROR
-			qglUnlockArraysEXT();
-			CHECKGLERROR
-		}
-		if (count && vid.support.ext_compiled_vertex_array && gl_lockarrays.integer)
-		{
-			gl_state.lockrange_first = first;
-			gl_state.lockrange_count = count;
-			CHECKGLERROR
-			qglLockArraysEXT(first, count);
-			CHECKGLERROR
-		}
-	}
-}
-
 void GL_Scissor (int x, int y, int width, int height)
 {
 	CHECKGLERROR
@@ -1074,14 +1043,14 @@ qboolean GL_Backend_CompileShader(int programobject, GLenum shadertypeenum, cons
 	qglCompileShaderARB(shaderobject);CHECKGLERROR
 	qglGetObjectParameterivARB(shaderobject, GL_OBJECT_COMPILE_STATUS_ARB, &shadercompiled);CHECKGLERROR
 	qglGetInfoLogARB(shaderobject, sizeof(compilelog), NULL, compilelog);CHECKGLERROR
-	if (compilelog[0] && developer.integer > 0)
+	if (compilelog[0] && (strstr(compilelog, "error") || strstr(compilelog, "ERROR") || strstr(compilelog, "Error") || strstr(compilelog, "WARNING") || strstr(compilelog, "warning") || strstr(compilelog, "Warning")))
 	{
 		int i, j, pretextlines = 0;
 		for (i = 0;i < numstrings - 1;i++)
 			for (j = 0;strings[i][j];j++)
 				if (strings[i][j] == '\n')
 					pretextlines++;
-		Con_DPrintf("%s shader compile log:\n%s\n(line offset for any above warnings/errors: %i)\n", shadertype, compilelog, pretextlines);
+		Con_Printf("%s shader compile log:\n%s\n(line offset for any above warnings/errors: %i)\n", shadertype, compilelog, pretextlines);
 	}
 	if (!shadercompiled)
 	{
@@ -1120,7 +1089,8 @@ unsigned int GL_Backend_CompileProgram(int vertexstrings_count, const char **ver
 	qglGetInfoLogARB(programobject, sizeof(linklog), NULL, linklog);CHECKGLERROR
 	if (linklog[0])
 	{
-		Con_DPrintf("program link log:\n%s\n", linklog);
+		if (strstr(linklog, "error") || strstr(linklog, "ERROR") || strstr(linklog, "Error") || strstr(linklog, "WARNING") || strstr(linklog, "warning") || strstr(linklog, "Warning"))
+			Con_DPrintf("program link log:\n%s\n", linklog);
 		// software vertex shader is ok but software fragment shader is WAY
 		// too slow, fail program if so.
 		// NOTE: this string might be ATI specific, but that's ok because the
@@ -1164,8 +1134,8 @@ void R_Mesh_Draw(int firstvertex, int numvertices, int firsttriangle, int numtri
 	unsigned int numelements = numtriangles * 3;
 	if (numvertices < 3 || numtriangles < 1)
 	{
-		if (numvertices < 0 || numtriangles < 0 || developer.integer >= 100)
-			Con_Printf("R_Mesh_Draw(%d, %d, %d, %d, %8p, %8p, %i, %i);\n", firstvertex, numvertices, firsttriangle, numtriangles, (void *)element3i, (void *)element3s, bufferobject3i, bufferobject3s);
+		if (numvertices < 0 || numtriangles < 0 || developer_extra.integer)
+			Con_DPrintf("R_Mesh_Draw(%d, %d, %d, %d, %8p, %8p, %i, %i);\n", firstvertex, numvertices, firsttriangle, numtriangles, (void *)element3i, (void *)element3s, bufferobject3i, bufferobject3s);
 		return;
 	}
 	if (!gl_mesh_prefer_short_elements.integer)
@@ -1429,7 +1399,7 @@ int R_Mesh_CreateStaticBufferObject(unsigned int target, void *data, size_t size
 	}
 	qglBufferDataARB(target, size, data, GL_STATIC_DRAW_ARB);
 
-	info = (gl_bufferobjectinfo_t *) Mem_ExpandableArray_AllocRecord(&gl_bufferobjectinfoarray);
+	info = (gl_bufferobjectinfo_t *) Mem_ExpandableArray_AllocRecord(&gl_state.bufferobjectinfoarray);
 	memset(info, 0, sizeof(*info));
 	info->target = target;
 	info->object = bufferobject;
@@ -1446,15 +1416,15 @@ void R_Mesh_DestroyBufferObject(int bufferobject)
 
 	qglDeleteBuffersARB(1, (GLuint *)&bufferobject);
 
-	endindex = Mem_ExpandableArray_IndexRange(&gl_bufferobjectinfoarray);
+	endindex = Mem_ExpandableArray_IndexRange(&gl_state.bufferobjectinfoarray);
 	for (i = 0;i < endindex;i++)
 	{
-		info = (gl_bufferobjectinfo_t *) Mem_ExpandableArray_RecordAtIndex(&gl_bufferobjectinfoarray, i);
+		info = (gl_bufferobjectinfo_t *) Mem_ExpandableArray_RecordAtIndex(&gl_state.bufferobjectinfoarray, i);
 		if (!info)
 			continue;
 		if (info->object == bufferobject)
 		{
-			Mem_ExpandableArray_FreeRecord(&gl_bufferobjectinfoarray, (void *)info);
+			Mem_ExpandableArray_FreeRecord(&gl_state.bufferobjectinfoarray, (void *)info);
 			break;
 		}
 	}
@@ -1466,10 +1436,10 @@ void GL_Mesh_ListVBOs(qboolean printeach)
 	size_t ebocount = 0, ebomemory = 0;
 	size_t vbocount = 0, vbomemory = 0;
 	gl_bufferobjectinfo_t *info;
-	endindex = Mem_ExpandableArray_IndexRange(&gl_bufferobjectinfoarray);
+	endindex = Mem_ExpandableArray_IndexRange(&gl_state.bufferobjectinfoarray);
 	for (i = 0;i < endindex;i++)
 	{
-		info = (gl_bufferobjectinfo_t *) Mem_ExpandableArray_RecordAtIndex(&gl_bufferobjectinfoarray, i);
+		info = (gl_bufferobjectinfo_t *) Mem_ExpandableArray_RecordAtIndex(&gl_state.bufferobjectinfoarray, i);
 		if (!info)
 			continue;
 		switch(info->target)
@@ -1482,19 +1452,6 @@ void GL_Mesh_ListVBOs(qboolean printeach)
 	Con_Printf("vertex buffers: %i element buffers totalling %i bytes (%.3f MB), %i vertex buffers totalling %i bytes (%.3f MB), combined %i bytes (%.3fMB)\n", (int)ebocount, (int)ebomemory, ebomemory / 1048576.0, (int)vbocount, (int)vbomemory, vbomemory / 1048576.0, (int)(ebomemory + vbomemory), (ebomemory + vbomemory) / 1048576.0);
 }
 
-void R_Mesh_Matrix(const matrix4x4_t *matrix)
-{
-	if (memcmp(matrix, &backend_modelmatrix, sizeof(matrix4x4_t)))
-	{
-		float glmatrix[16];
-		backend_modelmatrix = *matrix;
-		Matrix4x4_Concat(&backend_modelviewmatrix, &backend_viewport.viewmatrix, &backend_modelmatrix);
-		Matrix4x4_ToArrayFloatGL(&backend_modelviewmatrix, glmatrix);
-		CHECKGLERROR
-		qglLoadMatrixf(glmatrix);CHECKGLERROR
-	}
-}
-
 void R_Mesh_VertexPointer(const float *vertex3f, int bufferobject, size_t bufferoffset)
 {
 	if (!gl_vbo.integer || gl_mesh_testarrayelement.integer)
@@ -1592,17 +1549,75 @@ void R_Mesh_TexCoordPointer(unsigned int unitnum, unsigned int numcomponents, co
 	}
 }
 
-void R_Mesh_TexBindAll(unsigned int unitnum, int tex2d, int tex3d, int texcubemap, int texrectangle)
+int R_Mesh_TexBound(unsigned int unitnum, int id)
 {
 	gltextureunit_t *unit = gl_state.units + unitnum;
+	if (unitnum >= vid.teximageunits)
+		return 0;
+	if (id == GL_TEXTURE_2D)
+		return unit->t2d;
+	if (id == GL_TEXTURE_3D)
+		return unit->t3d;
+	if (id == GL_TEXTURE_CUBE_MAP_ARB)
+		return unit->tcubemap;
+	if (id == GL_TEXTURE_RECTANGLE_ARB)
+		return unit->trectangle;
+	return 0;
+}
+
+void R_Mesh_CopyToTexture(rtexture_t *tex, int tx, int ty, int sx, int sy, int width, int height)
+{
+	R_Mesh_TexBind(0, tex);
+	GL_ActiveTexture(0);CHECKGLERROR
+	qglCopyTexSubImage2D(GL_TEXTURE_2D, 0, tx, ty, sx, sy, width, height);CHECKGLERROR
+}
+
+void R_Mesh_TexBind(unsigned int unitnum, rtexture_t *tex)
+{
+	gltextureunit_t *unit = gl_state.units + unitnum;
+	int tex2d, tex3d, texcubemap, texnum;
 	if (unitnum >= vid.teximageunits)
 		return;
-	// update 2d texture binding
-	if (unit->t2d != tex2d)
-	{
-		GL_ActiveTexture(unitnum);
-		if (unitnum < vid.texunits)
+	switch(vid.renderpath)
+	{
+	case RENDERPATH_GL20:
+	case RENDERPATH_CGGL:
+		if (!tex)
+			tex = r_texture_white;
+		texnum = R_GetTexture(tex);
+		switch(tex->gltexturetypeenum)
 		{
+		case GL_TEXTURE_2D: if (unit->t2d != texnum) {GL_ActiveTexture(unitnum);unit->t2d = texnum;qglBindTexture(GL_TEXTURE_2D, unit->t2d);CHECKGLERROR}break;
+		case GL_TEXTURE_3D: if (unit->t3d != texnum) {GL_ActiveTexture(unitnum);unit->t3d = texnum;qglBindTexture(GL_TEXTURE_3D, unit->t3d);CHECKGLERROR}break;
+		case GL_TEXTURE_CUBE_MAP_ARB: if (unit->tcubemap != texnum) {GL_ActiveTexture(unitnum);unit->tcubemap = texnum;qglBindTexture(GL_TEXTURE_CUBE_MAP_ARB, unit->tcubemap);CHECKGLERROR}break;
+		case GL_TEXTURE_RECTANGLE_ARB: if (unit->trectangle != texnum) {GL_ActiveTexture(unitnum);unit->trectangle = texnum;qglBindTexture(GL_TEXTURE_RECTANGLE_ARB, unit->trectangle);CHECKGLERROR}break;
+		}
+		break;
+	case RENDERPATH_GL13:
+	case RENDERPATH_GL11:
+		tex2d = 0;
+		tex3d = 0;
+		texcubemap = 0;
+		if (tex)
+		{
+			texnum = R_GetTexture(tex);
+			switch(tex->gltexturetypeenum)
+			{
+			case GL_TEXTURE_2D:
+				tex2d = texnum;
+				break;
+			case GL_TEXTURE_3D:
+				tex3d = texnum;
+				break;
+			case GL_TEXTURE_CUBE_MAP_ARB:
+				texcubemap = texnum;
+				break;
+			}
+		}
+		// update 2d texture binding
+		if (unit->t2d != tex2d)
+		{
+			GL_ActiveTexture(unitnum);
 			if (tex2d)
 			{
 				if (unit->t2d == 0)
@@ -1617,16 +1632,13 @@ void R_Mesh_TexBindAll(unsigned int unitnum, int tex2d, int tex3d, int texcubema
 					qglDisable(GL_TEXTURE_2D);CHECKGLERROR
 				}
 			}
+			unit->t2d = tex2d;
+			qglBindTexture(GL_TEXTURE_2D, unit->t2d);CHECKGLERROR
 		}
-		unit->t2d = tex2d;
-		qglBindTexture(GL_TEXTURE_2D, unit->t2d);CHECKGLERROR
-	}
-	// update 3d texture binding
-	if (unit->t3d != tex3d)
-	{
-		GL_ActiveTexture(unitnum);
-		if (unitnum < vid.texunits)
+		// update 3d texture binding
+		if (unit->t3d != tex3d)
 		{
+			GL_ActiveTexture(unitnum);
 			if (tex3d)
 			{
 				if (unit->t3d == 0)
@@ -1641,16 +1653,13 @@ void R_Mesh_TexBindAll(unsigned int unitnum, int tex2d, int tex3d, int texcubema
 					qglDisable(GL_TEXTURE_3D);CHECKGLERROR
 				}
 			}
+			unit->t3d = tex3d;
+			qglBindTexture(GL_TEXTURE_3D, unit->t3d);CHECKGLERROR
 		}
-		unit->t3d = tex3d;
-		qglBindTexture(GL_TEXTURE_3D, unit->t3d);CHECKGLERROR
-	}
-	// update cubemap texture binding
-	if (unit->tcubemap != texcubemap)
-	{
-		GL_ActiveTexture(unitnum);
-		if (unitnum < vid.texunits)
+		// update cubemap texture binding
+		if (unit->tcubemap != texcubemap)
 		{
+			GL_ActiveTexture(unitnum);
 			if (texcubemap)
 			{
 				if (unit->tcubemap == 0)
@@ -1665,115 +1674,17 @@ void R_Mesh_TexBindAll(unsigned int unitnum, int tex2d, int tex3d, int texcubema
 					qglDisable(GL_TEXTURE_CUBE_MAP_ARB);CHECKGLERROR
 				}
 			}
+			unit->tcubemap = texcubemap;
+			qglBindTexture(GL_TEXTURE_CUBE_MAP_ARB, unit->tcubemap);CHECKGLERROR
 		}
-		unit->tcubemap = texcubemap;
-		qglBindTexture(GL_TEXTURE_CUBE_MAP_ARB, unit->tcubemap);CHECKGLERROR
-	}
-	// update rectangle texture binding
-	if (unit->trectangle != texrectangle)
-	{
-		GL_ActiveTexture(unitnum);
-		if (unitnum < vid.texunits)
-		{
-			if (texrectangle)
-			{
-				if (unit->trectangle == 0)
-				{
-					qglEnable(GL_TEXTURE_RECTANGLE_ARB);CHECKGLERROR
-				}
-			}
-			else
-			{
-				if (unit->trectangle)
-				{
-					qglDisable(GL_TEXTURE_RECTANGLE_ARB);CHECKGLERROR
-				}
-			}
-		}
-		unit->trectangle = texrectangle;
-		qglBindTexture(GL_TEXTURE_RECTANGLE_ARB, unit->trectangle);CHECKGLERROR
-	}
-}
-
-void R_Mesh_TexBind(unsigned int unitnum, int texnum)
-{
-	gltextureunit_t *unit = gl_state.units + unitnum;
-	if (unitnum >= vid.teximageunits)
-		return;
-	// update 2d texture binding
-	if (unit->t2d != texnum)
-	{
-		GL_ActiveTexture(unitnum);
-		if (unitnum < vid.texunits)
-		{
-			if (texnum)
-			{
-				if (unit->t2d == 0)
-				{
-					qglEnable(GL_TEXTURE_2D);CHECKGLERROR
-				}
-			}
-			else
-			{
-				if (unit->t2d)
-				{
-					qglDisable(GL_TEXTURE_2D);CHECKGLERROR
-				}
-			}
-		}
-		unit->t2d = texnum;
-		qglBindTexture(GL_TEXTURE_2D, unit->t2d);CHECKGLERROR
-	}
-	// update 3d texture binding
-	if (unit->t3d)
-	{
-		GL_ActiveTexture(unitnum);
-		if (unitnum < vid.texunits)
-		{
-			if (unit->t3d)
-			{
-				qglDisable(GL_TEXTURE_3D);CHECKGLERROR
-			}
-		}
-		unit->t3d = 0;
-		qglBindTexture(GL_TEXTURE_3D, unit->t3d);CHECKGLERROR
-	}
-	// update cubemap texture binding
-	if (unit->tcubemap != 0)
-	{
-		GL_ActiveTexture(unitnum);
-		if (unitnum < vid.texunits)
-		{
-			if (unit->tcubemap)
-			{
-				qglDisable(GL_TEXTURE_CUBE_MAP_ARB);CHECKGLERROR
-			}
-		}
-		unit->tcubemap = 0;
-		qglBindTexture(GL_TEXTURE_CUBE_MAP_ARB, unit->tcubemap);CHECKGLERROR
-	}
-	// update rectangle texture binding
-	if (unit->trectangle != 0)
-	{
-		GL_ActiveTexture(unitnum);
-		if (unitnum < vid.texunits)
-		{
-			if (unit->trectangle)
-			{
-				qglDisable(GL_TEXTURE_RECTANGLE_ARB);CHECKGLERROR
-			}
-		}
-		unit->trectangle = 0;
-		qglBindTexture(GL_TEXTURE_RECTANGLE_ARB, unit->trectangle);CHECKGLERROR
+		break;
 	}
 }
 
-static const float gl_identitymatrix[16] = {1,0,0,0, 0,1,0,0, 0,0,1,0, 0,0,0,1};
-
 void R_Mesh_TexMatrix(unsigned int unitnum, const matrix4x4_t *matrix)
 {
 	gltextureunit_t *unit = gl_state.units + unitnum;
-	if (matrix->m[3][3])
+	if (matrix && matrix->m[3][3])
 	{
 		// texmatrix specified, check if it is different
 		if (!unit->texmatrixenabled || memcmp(&unit->matrix, matrix, sizeof(matrix4x4_t)))
@@ -1809,8 +1720,13 @@ void R_Mesh_TexCombine(unsigned int unitnum, int combinergb, int combinealpha, i
 {
 	gltextureunit_t *unit = gl_state.units + unitnum;
 	CHECKGLERROR
-	if (gl_combine.integer)
+	switch(vid.renderpath)
 	{
+	case RENDERPATH_GL20:
+	case RENDERPATH_CGGL:
+		// do nothing
+		break;
+	case RENDERPATH_GL13:
 		// GL_ARB_texture_env_combine
 		if (!combinergb)
 			combinergb = GL_MODULATE;
@@ -1820,67 +1736,66 @@ void R_Mesh_TexCombine(unsigned int unitnum, int combinergb, int combinealpha, i
 			rgbscale = 1;
 		if (!alphascale)
 			alphascale = 1;
-		if (unit->combinergb != combinergb)
-		{
-			unit->combinergb = combinergb;
-			GL_ActiveTexture(unitnum);
-			qglTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_RGB_ARB, unit->combinergb);CHECKGLERROR
-		}
-		if (unit->combinealpha != combinealpha)
+		if (combinergb != combinealpha || rgbscale != 1 || alphascale != 1)
 		{
-			unit->combinealpha = combinealpha;
-			GL_ActiveTexture(unitnum);
-			qglTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_ALPHA_ARB, unit->combinealpha);CHECKGLERROR
-		}
-		if (unit->rgbscale != rgbscale)
-		{
-			GL_ActiveTexture(unitnum);
-			qglTexEnvi(GL_TEXTURE_ENV, GL_RGB_SCALE_ARB, (unit->rgbscale = rgbscale));CHECKGLERROR
+			if (combinergb == GL_DECAL)
+				combinergb = GL_INTERPOLATE_ARB;
+			if (unit->combine != GL_COMBINE_ARB)
+			{
+				unit->combine = GL_COMBINE_ARB;
+				GL_ActiveTexture(unitnum);
+				qglTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE_ARB);CHECKGLERROR
+				qglTexEnvi(GL_TEXTURE_ENV, GL_SOURCE2_RGB_ARB, GL_TEXTURE);CHECKGLERROR // for GL_INTERPOLATE_ARB mode
+			}
+			if (unit->combinergb != combinergb)
+			{
+				unit->combinergb = combinergb;
+				GL_ActiveTexture(unitnum);
+				qglTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_RGB_ARB, unit->combinergb);CHECKGLERROR
+			}
+			if (unit->combinealpha != combinealpha)
+			{
+				unit->combinealpha = combinealpha;
+				GL_ActiveTexture(unitnum);
+				qglTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_ALPHA_ARB, unit->combinealpha);CHECKGLERROR
+			}
+			if (unit->rgbscale != rgbscale)
+			{
+				unit->rgbscale = rgbscale;
+				GL_ActiveTexture(unitnum);
+				qglTexEnvi(GL_TEXTURE_ENV, GL_RGB_SCALE_ARB, unit->rgbscale);CHECKGLERROR
+			}
+			if (unit->alphascale != alphascale)
+			{
+				unit->alphascale = alphascale;
+				GL_ActiveTexture(unitnum);
+				qglTexEnvi(GL_TEXTURE_ENV, GL_ALPHA_SCALE, unit->alphascale);CHECKGLERROR
+			}
 		}
-		if (unit->alphascale != alphascale)
+		else
 		{
-			GL_ActiveTexture(unitnum);
-			qglTexEnvi(GL_TEXTURE_ENV, GL_ALPHA_SCALE, (unit->alphascale = alphascale));CHECKGLERROR
+			if (unit->combine != combinergb)
+			{
+				unit->combine = combinergb;
+				GL_ActiveTexture(unitnum);
+				qglTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, unit->combine);CHECKGLERROR
+			}
 		}
-	}
-	else
-	{
+		break;
+	case RENDERPATH_GL11:
 		// normal GL texenv
 		if (!combinergb)
 			combinergb = GL_MODULATE;
-		if (unit->combinergb != combinergb)
+		if (unit->combine != combinergb)
 		{
-			unit->combinergb = combinergb;
+			unit->combine = combinergb;
 			GL_ActiveTexture(unitnum);
-			qglTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, unit->combinergb);CHECKGLERROR
+			qglTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, unit->combine);CHECKGLERROR
 		}
+		break;
 	}
 }
 
-void R_Mesh_TextureState(const rmeshstate_t *m)
-{
-	unsigned int i;
-
-	BACKENDACTIVECHECK
-
-	CHECKGLERROR
-	for (i = 0;i < vid.teximageunits;i++)
-		R_Mesh_TexBindAll(i, m->tex[i], m->tex3d[i], m->texcubemap[i], m->texrectangle[i]);
-	for (i = 0;i < vid.texarrayunits;i++)
-	{
-		if (m->pointer_texcoord3f[i])
-			R_Mesh_TexCoordPointer(i, 3, m->pointer_texcoord3f[i], m->pointer_texcoord_bufferobject[i], m->pointer_texcoord_bufferoffset[i]);
-		else
-			R_Mesh_TexCoordPointer(i, 2, m->pointer_texcoord[i], m->pointer_texcoord_bufferobject[i], m->pointer_texcoord_bufferoffset[i]);
-	}
-	for (i = 0;i < vid.texunits;i++)
-	{
-		R_Mesh_TexMatrix(i, &m->texmatrix[i]);
-		R_Mesh_TexCombine(i, m->texcombinergb[i], m->texcombinealpha[i], m->texrgbscale[i], m->texalphascale[i]);
-	}
-	CHECKGLERROR
-}
-
 void R_Mesh_ResetTextureState(void)
 {
 	unsigned int unitnum;
@@ -1888,114 +1803,119 @@ void R_Mesh_ResetTextureState(void)
 	BACKENDACTIVECHECK
 
 	CHECKGLERROR
-	for (unitnum = 0;unitnum < vid.teximageunits;unitnum++)
+	switch(vid.renderpath)
 	{
-		gltextureunit_t *unit = gl_state.units + unitnum;
-		// update 2d texture binding
-		if (unit->t2d)
+	case RENDERPATH_GL20:
+	case RENDERPATH_CGGL:
+		for (unitnum = 0;unitnum < vid.teximageunits;unitnum++)
 		{
-			GL_ActiveTexture(unitnum);
-			if (unitnum < vid.texunits)
+			gltextureunit_t *unit = gl_state.units + unitnum;
+			if (unit->t2d)
 			{
-				qglDisable(GL_TEXTURE_2D);CHECKGLERROR
+				unit->t2d = 0;
+				GL_ActiveTexture(unitnum);
+				qglBindTexture(GL_TEXTURE_2D, unit->t2d);CHECKGLERROR
 			}
-			unit->t2d = 0;
-			qglBindTexture(GL_TEXTURE_2D, unit->t2d);CHECKGLERROR
-		}
-		// update 3d texture binding
-		if (unit->t3d)
-		{
-			GL_ActiveTexture(unitnum);
-			if (unitnum < vid.texunits)
+			if (unit->t3d)
 			{
-				qglDisable(GL_TEXTURE_3D);CHECKGLERROR
+				unit->t3d = 0;
+				GL_ActiveTexture(unitnum);
+				qglBindTexture(GL_TEXTURE_3D, unit->t3d);CHECKGLERROR
 			}
-			unit->t3d = 0;
-			qglBindTexture(GL_TEXTURE_3D, unit->t3d);CHECKGLERROR
-		}
-		// update cubemap texture binding
-		if (unit->tcubemap)
-		{
-			GL_ActiveTexture(unitnum);
-			if (unitnum < vid.texunits)
+			if (unit->tcubemap)
 			{
-				qglDisable(GL_TEXTURE_CUBE_MAP_ARB);CHECKGLERROR
+				unit->tcubemap = 0;
+				GL_ActiveTexture(unitnum);
+				qglBindTexture(GL_TEXTURE_CUBE_MAP_ARB, unit->tcubemap);CHECKGLERROR
 			}
-			unit->tcubemap = 0;
-			qglBindTexture(GL_TEXTURE_CUBE_MAP_ARB, unit->tcubemap);CHECKGLERROR
-		}
-		// update rectangle texture binding
-		if (unit->trectangle)
-		{
-			GL_ActiveTexture(unitnum);
-			if (unitnum < vid.texunits)
+			if (unit->trectangle)
 			{
-				qglDisable(GL_TEXTURE_RECTANGLE_ARB);CHECKGLERROR
+				unit->trectangle = 0;
+				GL_ActiveTexture(unitnum);
+				qglBindTexture(GL_TEXTURE_RECTANGLE_ARB, unit->trectangle);CHECKGLERROR
 			}
-			unit->trectangle = 0;
-			qglBindTexture(GL_TEXTURE_RECTANGLE_ARB, unit->trectangle);CHECKGLERROR
 		}
-	}
-	for (unitnum = 0;unitnum < vid.texarrayunits;unitnum++)
-	{
-		gltextureunit_t *unit = gl_state.units + unitnum;
-		// texture array unit is disabled, disable the array
-		if (unit->arrayenabled)
+		for (unitnum = 0;unitnum < vid.texarrayunits;unitnum++)
 		{
-			unit->arrayenabled = false;
-			GL_ClientActiveTexture(unitnum);
-			qglDisableClientState(GL_TEXTURE_COORD_ARRAY);CHECKGLERROR
+			gltextureunit_t *unit = gl_state.units + unitnum;
+			if (unit->arrayenabled)
+			{
+				unit->arrayenabled = false;
+				GL_ClientActiveTexture(unitnum);
+				qglDisableClientState(GL_TEXTURE_COORD_ARRAY);CHECKGLERROR
+			}
 		}
-	}
-	for (unitnum = 0;unitnum < vid.texunits;unitnum++)
-	{
-		gltextureunit_t *unit = gl_state.units + unitnum;
-		// no texmatrix specified, revert to identity
-		if (unit->texmatrixenabled)
+		for (unitnum = 0;unitnum < vid.texunits;unitnum++)
 		{
-			unit->texmatrixenabled = false;
-			unit->matrix = identitymatrix;
-			CHECKGLERROR
-			GL_ActiveTexture(unitnum);
-			qglMatrixMode(GL_TEXTURE);CHECKGLERROR
-			qglLoadIdentity();CHECKGLERROR
-			qglMatrixMode(GL_MODELVIEW);CHECKGLERROR
+			gltextureunit_t *unit = gl_state.units + unitnum;
+			if (unit->texmatrixenabled)
+			{
+				unit->texmatrixenabled = false;
+				unit->matrix = identitymatrix;
+				CHECKGLERROR
+				GL_ActiveTexture(unitnum);
+				qglMatrixMode(GL_TEXTURE);CHECKGLERROR
+				qglLoadIdentity();CHECKGLERROR
+				qglMatrixMode(GL_MODELVIEW);CHECKGLERROR
+			}
 		}
-		if (gl_combine.integer)
+		break;
+	case RENDERPATH_GL13:
+	case RENDERPATH_GL11:
+		for (unitnum = 0;unitnum < vid.texunits;unitnum++)
 		{
-			// GL_ARB_texture_env_combine
-			if (unit->combinergb != GL_MODULATE)
+			gltextureunit_t *unit = gl_state.units + unitnum;
+			if (unit->t2d)
 			{
-				unit->combinergb = GL_MODULATE;
+				unit->t2d = 0;
 				GL_ActiveTexture(unitnum);
-				qglTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_RGB_ARB, unit->combinergb);CHECKGLERROR
+				qglDisable(GL_TEXTURE_2D);CHECKGLERROR
+				qglBindTexture(GL_TEXTURE_2D, unit->t2d);CHECKGLERROR
 			}
-			if (unit->combinealpha != GL_MODULATE)
+			if (unit->t3d)
 			{
-				unit->combinealpha = GL_MODULATE;
+				unit->t3d = 0;
 				GL_ActiveTexture(unitnum);
-				qglTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_ALPHA_ARB, unit->combinealpha);CHECKGLERROR
+				qglDisable(GL_TEXTURE_3D);CHECKGLERROR
+				qglBindTexture(GL_TEXTURE_3D, unit->t3d);CHECKGLERROR
 			}
-			if (unit->rgbscale != 1)
+			if (unit->tcubemap)
 			{
+				unit->tcubemap = 0;
 				GL_ActiveTexture(unitnum);
-				qglTexEnvi(GL_TEXTURE_ENV, GL_RGB_SCALE_ARB, (unit->rgbscale = 1));CHECKGLERROR
+				qglDisable(GL_TEXTURE_CUBE_MAP_ARB);CHECKGLERROR
+				qglBindTexture(GL_TEXTURE_CUBE_MAP_ARB, unit->tcubemap);CHECKGLERROR
 			}
-			if (unit->alphascale != 1)
+			if (unit->trectangle)
 			{
+				unit->trectangle = 0;
 				GL_ActiveTexture(unitnum);
-				qglTexEnvi(GL_TEXTURE_ENV, GL_ALPHA_SCALE, (unit->alphascale = 1));CHECKGLERROR
+				qglDisable(GL_TEXTURE_RECTANGLE_ARB);CHECKGLERROR
+				qglBindTexture(GL_TEXTURE_RECTANGLE_ARB, unit->trectangle);CHECKGLERROR
 			}
-		}
-		else
-		{
-			// normal GL texenv
-			if (unit->combinergb != GL_MODULATE)
+			if (unit->arrayenabled)
 			{
-				unit->combinergb = GL_MODULATE;
+				unit->arrayenabled = false;
+				GL_ClientActiveTexture(unitnum);
+				qglDisableClientState(GL_TEXTURE_COORD_ARRAY);CHECKGLERROR
+			}
+			if (unit->texmatrixenabled)
+			{
+				unit->texmatrixenabled = false;
+				unit->matrix = identitymatrix;
+				CHECKGLERROR
 				GL_ActiveTexture(unitnum);
-				qglTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, unit->combinergb);CHECKGLERROR
+				qglMatrixMode(GL_TEXTURE);CHECKGLERROR
+				qglLoadIdentity();CHECKGLERROR
+				qglMatrixMode(GL_MODELVIEW);CHECKGLERROR
+			}
+			if (unit->combine != GL_MODULATE)
+			{
+				unit->combine = GL_MODULATE;
+				GL_ActiveTexture(unitnum);
+				qglTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, unit->combine);CHECKGLERROR
 			}
 		}
+		break;
 	}
 }