Merge branch 'mesa_7_0_branch' of git+ssh://brianp@git.freedesktop.org/git/mesa/mesa into mesa_7_0_branch

17 files changed, 205 insertions, 45 deletions

diff --git a/include/GL/internal/dri_interface.h b/include/GL/internal/dri_interface.h
index a3de2c6aab3..8d24e311f84 100644
--- a/include/GL/internal/dri_interface.h
+++ b/include/GL/internal/dri_interface.h
@@ -361,6 +361,18 @@ struct __DRIscreenRec {
     void * (*createNewContext)(__DRInativeDisplay *dpy, const __GLcontextModes *modes,
 			       int render_type,
 			       void *sharedPrivate, __DRIcontext *pctx);
+
+    /**
+     * Method to override base texture image with a driver specific 'offset'.
+     * The depth passed in allows e.g. to ignore the alpha channel of texture
+     * images where the non-alpha components don't occupy a whole texel.
+     *
+     * For GLX_EXT_texture_from_pixmap with AIGLX.
+     *
+     * \since Internal API version 20070121.
+     */
+    void (*setTexOffset)(__DRIcontext *pDRICtx, GLint texname,
+			 unsigned long long offset, GLint depth, GLuint pitch);
 };
 
 /**
diff --git a/src/mesa/drivers/dri/common/dri_util.c b/src/mesa/drivers/dri/common/dri_util.c
index 25d32894dc8..c30e66f1722 100644
--- a/src/mesa/drivers/dri/common/dri_util.c
+++ b/src/mesa/drivers/dri/common/dri_util.c
@@ -997,6 +997,9 @@ __driUtilCreateNewScreen(__DRInativeDisplay *dpy, int scrn, __DRIscreen *psc,
     psc->getMSC            = driGetMSC;
     psc->createNewContext  = driCreateNewContext;
 
+    if (internal_api_version >= 20070121)
+	psc->setTexOffset  = psp->DriverAPI.setTexOffset;
+
     if ( (psp->DriverAPI.InitDriver != NULL)
 	 && !(*psp->DriverAPI.InitDriver)(psp) ) {
 	_mesa_free( psp );
diff --git a/src/mesa/drivers/dri/common/dri_util.h b/src/mesa/drivers/dri/common/dri_util.h
index 8639535abb2..539d28d1149 100644
--- a/src/mesa/drivers/dri/common/dri_util.h
+++ b/src/mesa/drivers/dri/common/dri_util.h
@@ -189,6 +189,12 @@ struct __DriverAPIRec {
     /*@}*/
     void (*CopySubBuffer)(__DRIdrawablePrivate *driDrawPriv,
 			  int x, int y, int w, int h);
+
+    /**
+     * See corresponding field in \c __DRIscreenRec.
+     */
+    void (*setTexOffset)(__DRIcontext *pDRICtx, GLint texname,
+			 unsigned long long offset, GLint depth, GLuint pitch);
 };
 
 
diff --git a/src/mesa/drivers/dri/i915tex/i830_reg.h b/src/mesa/drivers/dri/i915tex/i830_reg.h
index 24ac5245005..41280bca7ce 100644
--- a/src/mesa/drivers/dri/i915tex/i830_reg.h
+++ b/src/mesa/drivers/dri/i915tex/i830_reg.h
@@ -575,6 +575,7 @@
 #define    MT_16BIT_DIB_RGB565_8888	   (7<<3)
 #define    MT_32BIT_ARGB8888		   (0<<3)       /* SURFACE_32BIT */
 #define    MT_32BIT_ABGR8888		   (1<<3)
+#define    MT_32BIT_XRGB8888		   (2<<3)       /* XXX: Guess from i915_reg.h */
 #define    MT_32BIT_BUMP_XLDVDU_8888	   (6<<3)
 #define    MT_32BIT_DIB_8888		   (7<<3)
 #define    MT_411_YUV411		   (0<<3)       /* SURFACE_411 */
diff --git a/src/mesa/drivers/dri/i915tex/i830_texstate.c b/src/mesa/drivers/dri/i915tex/i830_texstate.c
index e3f34e3944a..0d3f053226f 100644
--- a/src/mesa/drivers/dri/i915tex/i830_texstate.c
+++ b/src/mesa/drivers/dri/i915tex/i830_texstate.c
@@ -117,7 +117,7 @@ i830_update_tex_unit(struct intel_context *intel, GLuint unit, GLuint ss3)
    struct gl_texture_object *tObj = ctx->Texture.Unit[unit]._Current;
    struct intel_texture_object *intelObj = intel_texture_object(tObj);
    struct gl_texture_image *firstImage;
-   GLuint *state = i830->state.Tex[unit];
+   GLuint *state = i830->state.Tex[unit], format, pitch;
 
    memset(state, 0, sizeof(state));
 
@@ -128,7 +128,7 @@ i830_update_tex_unit(struct intel_context *intel, GLuint unit, GLuint ss3)
        i830->state.tex_buffer[unit] = NULL;
    }
 
-   if (!intel_finalize_mipmap_tree(intel, unit))
+   if (!intelObj->imageOverride && !intel_finalize_mipmap_tree(intel, unit))
       return GL_FALSE;
 
    /* Get first image here, since intelObj->firstLevel will get set in
@@ -136,11 +136,34 @@ i830_update_tex_unit(struct intel_context *intel, GLuint unit, GLuint ss3)
     */
    firstImage = tObj->Image[0][intelObj->firstLevel];
 
-   i830->state.tex_buffer[unit] = driBOReference(intelObj->mt->region->buffer);
-   i830->state.tex_offset[unit] = intel_miptree_image_offset(intelObj->mt, 0,
-                                                             intelObj->
-                                                             firstLevel);
+   if (intelObj->imageOverride) {
+      i830->state.tex_buffer[unit] = NULL;
+      i830->state.tex_offset[unit] = intelObj->textureOffset;
 
+      switch (intelObj->depthOverride) {
+      case 32:
+	 format = MAPSURF_32BIT | MT_32BIT_ARGB8888;
+	 break;
+      case 24:
+      default:
+	 format = MAPSURF_32BIT | MT_32BIT_XRGB8888;
+	 break;
+      case 16:
+	 format = MAPSURF_16BIT | MT_16BIT_RGB565;
+	 break;
+      }
+
+      pitch = intelObj->pitchOverride;
+   } else {
+      i830->state.tex_buffer[unit] = driBOReference(intelObj->mt->region->
+						    buffer);
+      i830->state.tex_offset[unit] = intel_miptree_image_offset(intelObj->mt,
+								0, intelObj->
+								firstLevel);
+
+      format = translate_texture_format(firstImage->TexFormat->MesaFormat);
+      pitch = intelObj->mt->pitch * intelObj->mt->cpp;
+   }
 
    state[I830_TEXREG_TM0LI] = (_3DSTATE_LOAD_STATE_IMMEDIATE_2 |
                                (LOAD_TEXTURE_MAP0 << unit) | 4);
@@ -151,12 +174,10 @@ i830_update_tex_unit(struct intel_context *intel, GLuint unit, GLuint ss3)
 
    state[I830_TEXREG_TM0S1] =
       (((firstImage->Height - 1) << TM0S1_HEIGHT_SHIFT) |
-       ((firstImage->Width - 1) << TM0S1_WIDTH_SHIFT) |
-       translate_texture_format(firstImage->TexFormat->MesaFormat));
+       ((firstImage->Width - 1) << TM0S1_WIDTH_SHIFT) | format);
 
    state[I830_TEXREG_TM0S2] =
-      (((((intelObj->mt->pitch * intelObj->mt->cpp) / 4) -
-         1) << TM0S2_PITCH_SHIFT) | TM0S2_CUBE_FACE_ENA_MASK);
+      ((((pitch / 4) - 1) << TM0S2_PITCH_SHIFT) | TM0S2_CUBE_FACE_ENA_MASK);
 
    {
       if (tObj->Target == GL_TEXTURE_CUBE_MAP)
diff --git a/src/mesa/drivers/dri/i915tex/i830_vtbl.c b/src/mesa/drivers/dri/i915tex/i830_vtbl.c
index dd0670dec37..e432648ada0 100644
--- a/src/mesa/drivers/dri/i915tex/i830_vtbl.c
+++ b/src/mesa/drivers/dri/i915tex/i830_vtbl.c
@@ -490,11 +490,13 @@ i830_emit_state(struct intel_context *intel)
                       DRM_BO_MASK_MEM | DRM_BO_FLAG_READ,
                       state->tex_offset[i] | TM0S0_USE_FENCE);
          }
-         else {
-            assert(i == 0);
-            assert(state == &i830->meta);
-            OUT_BATCH(0);
-         }
+	 else if (state == &i830->meta) {
+	    assert(i == 0);
+	    OUT_BATCH(0);
+	 }
+	 else {
+	    OUT_BATCH(state->tex_offset[i]);
+	 }
 
          OUT_BATCH(state->Tex[i][I830_TEXREG_TM0S1]);
          OUT_BATCH(state->Tex[i][I830_TEXREG_TM0S2]);
diff --git a/src/mesa/drivers/dri/i915tex/i915_texstate.c b/src/mesa/drivers/dri/i915tex/i915_texstate.c
index e0ecdfde24a..3d68187cf88 100644
--- a/src/mesa/drivers/dri/i915tex/i915_texstate.c
+++ b/src/mesa/drivers/dri/i915tex/i915_texstate.c
@@ -122,7 +122,7 @@ i915_update_tex_unit(struct intel_context *intel, GLuint unit, GLuint ss3)
    struct gl_texture_object *tObj = ctx->Texture.Unit[unit]._Current;
    struct intel_texture_object *intelObj = intel_texture_object(tObj);
    struct gl_texture_image *firstImage;
-   GLuint *state = i915->state.Tex[unit];
+   GLuint *state = i915->state.Tex[unit], format, pitch;
 
    memset(state, 0, sizeof(state));
 
@@ -133,7 +133,7 @@ i915_update_tex_unit(struct intel_context *intel, GLuint unit, GLuint ss3)
        i915->state.tex_buffer[unit] = NULL;
    }
 
-   if (!intel_finalize_mipmap_tree(intel, unit))
+   if (!intelObj->imageOverride && !intel_finalize_mipmap_tree(intel, unit))
       return GL_FALSE;
 
    /* Get first image here, since intelObj->firstLevel will get set in
@@ -141,24 +141,45 @@ i915_update_tex_unit(struct intel_context *intel, GLuint unit, GLuint ss3)
     */
    firstImage = tObj->Image[0][intelObj->firstLevel];
 
-   i915->state.tex_buffer[unit] = driBOReference(intelObj->mt->region->buffer);
-   i915->state.tex_offset[unit] = intel_miptree_image_offset(intelObj->mt, 0,
-                                                             intelObj->
-                                                             firstLevel);
+   if (intelObj->imageOverride) {
+      i915->state.tex_buffer[unit] = NULL;
+      i915->state.tex_offset[unit] = intelObj->textureOffset;
+
+      switch (intelObj->depthOverride) {
+      case 32:
+	 format = MAPSURF_32BIT | MT_32BIT_ARGB8888;
+	 break;
+      case 24:
+      default:
+	 format = MAPSURF_32BIT | MT_32BIT_XRGB8888;
+	 break;
+      case 16:
+	 format = MAPSURF_16BIT | MT_16BIT_RGB565;
+	 break;
+      }
+
+      pitch = intelObj->pitchOverride;
+   } else {
+      i915->state.tex_buffer[unit] = driBOReference(intelObj->mt->region->
+						    buffer);
+      i915->state.tex_offset[unit] =  intel_miptree_image_offset(intelObj->mt,
+								 0, intelObj->
+								 firstLevel);
+
+      format = translate_texture_format(firstImage->TexFormat->MesaFormat);
+      pitch = intelObj->mt->pitch * intelObj->mt->cpp;
+   }
 
    state[I915_TEXREG_MS3] =
       (((firstImage->Height - 1) << MS3_HEIGHT_SHIFT) |
-       ((firstImage->Width - 1) << MS3_WIDTH_SHIFT) |
-       translate_texture_format(firstImage->TexFormat->MesaFormat) |
+       ((firstImage->Width - 1) << MS3_WIDTH_SHIFT) | format |
        MS3_USE_FENCE_REGS);
 
    state[I915_TEXREG_MS4] =
-      (((((intelObj->mt->pitch * intelObj->mt->cpp) / 4) -
-         1) << MS4_PITCH_SHIFT) | MS4_CUBE_FACE_ENA_MASK |
-       ((((intelObj->lastLevel -
-           intelObj->firstLevel) *
-          4)) << MS4_MAX_LOD_SHIFT) | ((firstImage->Depth -
-                                        1) << MS4_VOLUME_DEPTH_SHIFT));
+     ((((pitch / 4) - 1) << MS4_PITCH_SHIFT) | MS4_CUBE_FACE_ENA_MASK |
+       ((((intelObj->lastLevel - intelObj->firstLevel) * 4)) <<
+	MS4_MAX_LOD_SHIFT) | ((firstImage->Depth - 1) <<
+			      MS4_VOLUME_DEPTH_SHIFT));
 
 
    {
diff --git a/src/mesa/drivers/dri/i915tex/i915_vtbl.c b/src/mesa/drivers/dri/i915tex/i915_vtbl.c
index 264cf0fd9f4..ad333b490b7 100644
--- a/src/mesa/drivers/dri/i915tex/i915_vtbl.c
+++ b/src/mesa/drivers/dri/i915tex/i915_vtbl.c
@@ -382,11 +382,13 @@ i915_emit_state(struct intel_context *intel)
                          DRM_BO_MASK_MEM | DRM_BO_FLAG_READ,
                          state->tex_offset[i]);
             }
-            else {
+            else if (state == &i915->meta) {
                assert(i == 0);
-               assert(state == &i915->meta);
                OUT_BATCH(0);
             }
+            else {
+               OUT_BATCH(state->tex_offset[i]);
+            }
 
             OUT_BATCH(state->Tex[i][I915_TEXREG_MS3]);
             OUT_BATCH(state->Tex[i][I915_TEXREG_MS4]);
diff --git a/src/mesa/drivers/dri/i915tex/intel_context.h b/src/mesa/drivers/dri/i915tex/intel_context.h
index 44c20af7f80..bcbbb127b12 100644
--- a/src/mesa/drivers/dri/i915tex/intel_context.h
+++ b/src/mesa/drivers/dri/i915tex/intel_context.h
@@ -92,6 +92,10 @@ struct intel_texture_object
     * regions will be copied to this region and the old storage freed.
     */
    struct intel_mipmap_tree *mt;
+
+   GLboolean imageOverride;
+   GLint depthOverride;
+   GLuint pitchOverride;
 };
 
 
diff --git a/src/mesa/drivers/dri/i915tex/intel_screen.c b/src/mesa/drivers/dri/i915tex/intel_screen.c
index dd01161b5bb..5e6df81950b 100644
--- a/src/mesa/drivers/dri/i915tex/intel_screen.c
+++ b/src/mesa/drivers/dri/i915tex/intel_screen.c
@@ -776,7 +776,8 @@ static const struct __DriverAPIRec intelAPI = {
    .WaitForMSC = driWaitForMSC32,
    .WaitForSBC = NULL,
    .SwapBuffersMSC = NULL,
-   .CopySubBuffer = intelCopySubBuffer
+   .CopySubBuffer = intelCopySubBuffer,
+   .setTexOffset = intelSetTexOffset,
 };
 
 
diff --git a/src/mesa/drivers/dri/i915tex/intel_tex.h b/src/mesa/drivers/dri/i915tex/intel_tex.h
index 6e9938fe534..b77d7a1d8af 100644
--- a/src/mesa/drivers/dri/i915tex/intel_tex.h
+++ b/src/mesa/drivers/dri/i915tex/intel_tex.h
@@ -135,6 +135,9 @@ void intelGetCompressedTexImage(GLcontext *ctx, GLenum target, GLint level,
 				const struct gl_texture_object *texObj,
 				const struct gl_texture_image *texImage);
 
+void intelSetTexOffset(__DRIcontext *pDRICtx, GLint texname,
+		       unsigned long long offset, GLint depth, GLuint pitch);
+
 GLuint intel_finalize_mipmap_tree(struct intel_context *intel, GLuint unit);
 
 void intel_tex_map_images(struct intel_context *intel,
diff --git a/src/mesa/drivers/dri/i915tex/intel_tex_image.c b/src/mesa/drivers/dri/i915tex/intel_tex_image.c
index 42679ef9db7..abab90cc066 100644
--- a/src/mesa/drivers/dri/i915tex/intel_tex_image.c
+++ b/src/mesa/drivers/dri/i915tex/intel_tex_image.c
@@ -378,6 +378,9 @@ intelTexImage(GLcontext * ctx,
       assert(!intelObj->mt);
    }
 
+   if (!pixels)
+      return;
+
    if (!intelObj->mt) {
       guess_and_alloc_mipmap_tree(intel, intelObj, intelImage);
       if (!intelObj->mt) {
@@ -385,7 +388,6 @@ intelTexImage(GLcontext * ctx,
       }
    }
 
-
    assert(!intelImage->mt);
 
    if (intelObj->mt &&
@@ -667,3 +669,23 @@ intelGetCompressedTexImage(GLcontext *ctx, GLenum target, GLint level,
 		       texObj, texImage, 1);
 
 }
+
+void
+intelSetTexOffset(__DRIcontext *pDRICtx, GLint texname,
+		  unsigned long long offset, GLint depth, GLuint pitch)
+{
+   struct intel_context *intel = (struct intel_context*)
+      ((__DRIcontextPrivate*)pDRICtx->private)->driverPrivate;
+   struct gl_texture_object *tObj = _mesa_lookup_texture(&intel->ctx, texname);
+   struct intel_texture_object *intelObj = intel_texture_object(tObj);
+
+   if (!intelObj)
+      return;
+
+   intelObj->imageOverride = GL_TRUE;
+   intelObj->depthOverride = depth;
+   intelObj->pitchOverride = pitch;
+
+   if (offset)
+      intelObj->textureOffset = offset;
+}
diff --git a/src/mesa/drivers/dri/r300/r300_context.h b/src/mesa/drivers/dri/r300/r300_context.h
index 13b943f75fc..41498678331 100644
--- a/src/mesa/drivers/dri/r300/r300_context.h
+++ b/src/mesa/drivers/dri/r300/r300_context.h
@@ -191,6 +191,8 @@ struct r300_tex_obj {
 	drm_radeon_tex_image_t image[6][RADEON_MAX_TEXTURE_LEVELS];
 	/* Six, for the cube faces */
 
+	GLboolean image_override;	/* Image overridden by GLX_EXT_tfp */
+
 	GLuint pitch;		/* this isn't sent to hardware just used in calculations */
 	/* hardware register values */
 	/* Note that R200 has 8 registers per texture and R300 only 7 */
diff --git a/src/mesa/drivers/dri/r300/r300_tex.h b/src/mesa/drivers/dri/r300/r300_tex.h
index 74fa08e97d9..f67a8e6ba65 100644
--- a/src/mesa/drivers/dri/r300/r300_tex.h
+++ b/src/mesa/drivers/dri/r300/r300_tex.h
@@ -35,6 +35,10 @@ WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #ifndef __r300_TEX_H__
 #define __r300_TEX_H__
 
+extern void r300SetTexOffset(__DRIcontext *pDRICtx, GLint texname,
+			     unsigned long long offset, GLint depth,
+			     GLuint pitch);
+
 extern void r300UpdateTextureState(GLcontext * ctx);
 
 extern int r300UploadTexImages(r300ContextPtr rmesa, r300TexObjPtr t,
diff --git a/src/mesa/drivers/dri/r300/r300_texmem.c b/src/mesa/drivers/dri/r300/r300_texmem.c
index 60e7dc967b1..e2e8355d275 100644
--- a/src/mesa/drivers/dri/r300/r300_texmem.c
+++ b/src/mesa/drivers/dri/r300/r300_texmem.c
@@ -508,6 +508,9 @@ int r300UploadTexImages(r300ContextPtr rmesa, r300TexObjPtr t, GLuint face)
 {
 	const int numLevels = t->base.lastLevel - t->base.firstLevel + 1;
 
+	if (t->image_override)
+		return 0;
+
 	if (RADEON_DEBUG & (DEBUG_TEXTURE | DEBUG_IOCTL)) {
 		fprintf(stderr, "%s( %p, %p ) sz=%d lvls=%d-%d\n", __FUNCTION__,
 			(void *)rmesa->radeon.glCtx, (void *)t->base.tObj,
diff --git a/src/mesa/drivers/dri/r300/r300_texstate.c b/src/mesa/drivers/dri/r300/r300_texstate.c
index 705502ebf2b..8203189b7f4 100644
--- a/src/mesa/drivers/dri/r300/r300_texstate.c
+++ b/src/mesa/drivers/dri/r300/r300_texstate.c
@@ -40,6 +40,8 @@ WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #include "context.h"
 #include "macros.h"
 #include "texformat.h"
+#include "teximage.h"
+#include "texobj.h"
 #include "enums.h"
 
 #include "r300_context.h"
@@ -66,7 +68,7 @@ WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  * identically.  -- paulus
  */
 
-static const struct {
+static const struct tx_table {
 	GLuint format, filter, flag;
 } tx_table_be[] = {
 	/* *INDENT-OFF* */
@@ -109,15 +111,13 @@ static const struct {
 	/* *INDENT-ON* */
 };
 
-static const struct {
-	GLuint format, filter, flag;
-} tx_table_le[] = {
+static const struct tx_table tx_table_le[] = {
 	/* *INDENT-OFF* */
 	_ASSIGN(RGBA8888, R300_EASY_TX_FORMAT(Y, Z, W, X, W8Z8Y8X8)),
 	_ASSIGN(RGBA8888_REV, R300_EASY_TX_FORMAT(Z, Y, X, W, W8Z8Y8X8)),
 	_ASSIGN(ARGB8888, R300_EASY_TX_FORMAT(X, Y, Z, W, W8Z8Y8X8)),
 	_ASSIGN(ARGB8888_REV, R300_EASY_TX_FORMAT(W, Z, Y, X, W8Z8Y8X8)),
-	_ASSIGN(RGB888, 0xffffffff),
+	_ASSIGN(RGB888, R300_EASY_TX_FORMAT(X, Y, Z, ONE, W8Z8Y8X8)),
 	_ASSIGN(RGB565, R300_EASY_TX_FORMAT(X, Y, Z, ONE, Z5Y6X5)),
 	_ASSIGN(RGB565_REV, R300_EASY_TX_FORMAT(X, Y, Z, ONE, Z5Y6X5)),
 	_ASSIGN(ARGB4444, R300_EASY_TX_FORMAT(X, Y, Z, W, W4Z4Y4X4)),
@@ -178,7 +178,7 @@ static void r300SetTexImages(r300ContextPtr rmesa,
 
 	/* Set the hardware texture format
 	 */
-	if (VALID_FORMAT(baseImage->TexFormat->MesaFormat)) {
+	if (!t->image_override && VALID_FORMAT(baseImage->TexFormat->MesaFormat)) {
 		if (_mesa_little_endian()) {
 			t->format =
 			    tx_table_le[baseImage->TexFormat->MesaFormat].
@@ -194,7 +194,7 @@ static void r300SetTexImages(r300ContextPtr rmesa,
 			    tx_table_be[baseImage->TexFormat->MesaFormat].
 			    filter;
 		}
-	} else {
+	} else if (!t->image_override) {
 		_mesa_problem(NULL, "unexpected texture format in %s",
 			      __FUNCTION__);
 		return;
@@ -382,9 +382,10 @@ static void r300SetTexImages(r300ContextPtr rmesa,
 		t->pitch = ((tObj->Image[0][t->base.firstLevel]->Width *
 			     texelBytes) + 63) & ~(63);
 		t->size |= R300_TX_SIZE_TXPITCH_EN;
-		t->pitch_reg =
-		    (((tObj->Image[0][t->base.firstLevel]->Width) +
-		      align) & ~align) - 1;
+		if (!t->image_override)
+			t->pitch_reg =
+			    (((tObj->Image[0][t->base.firstLevel]->Width) +
+			      align) & ~align) - 1;
 	} else {
 		t->pitch =
 		    ((tObj->Image[0][t->base.firstLevel]->Width *
@@ -411,9 +412,10 @@ static GLboolean r300EnableTexture2D(GLcontext * ctx, int unit)
 
 	if (t->base.dirty_images[0]) {
 		R300_FIREVERTICES(rmesa);
+
 		r300SetTexImages(rmesa, tObj);
 		r300UploadTexImages(rmesa, (r300TexObjPtr) tObj->DriverData, 0);
-		if (!t->base.memBlock)
+		if (!t->base.memBlock && !t->image_override)
 			return GL_FALSE;
 	}
 
@@ -492,9 +494,11 @@ static GLboolean r300EnableTextureRect(GLcontext * ctx, int unit)
 
 	if (t->base.dirty_images[0]) {
 		R300_FIREVERTICES(rmesa);
+
 		r300SetTexImages(rmesa, tObj);
 		r300UploadTexImages(rmesa, (r300TexObjPtr) tObj->DriverData, 0);
-		if (!t->base.memBlock && !rmesa->prefer_gart_client_texturing)
+		if (!t->base.memBlock && !t->image_override &&
+		    !rmesa->prefer_gart_client_texturing)
 			return GL_FALSE;
 	}
 
@@ -534,6 +538,51 @@ static GLboolean r300UpdateTexture(GLcontext * ctx, int unit)
 	return !t->border_fallback;
 }
 
+void r300SetTexOffset(__DRIcontext *pDRICtx, GLint texname,
+		      unsigned long long offset, GLint depth, GLuint pitch)
+{
+	r300ContextPtr rmesa =
+		(r300ContextPtr)((__DRIcontextPrivate*)pDRICtx->private)->driverPrivate;
+	struct gl_texture_object *tObj =
+		_mesa_lookup_texture(rmesa->radeon.glCtx, texname);
+	r300TexObjPtr t;
+	int idx;
+
+	if (!tObj)
+		return;
+
+	t = (r300TexObjPtr) tObj->DriverData;
+
+	t->image_override = GL_TRUE;
+
+	if (!offset)
+		return;
+
+	t->offset = offset;
+	t->pitch_reg = pitch;
+
+	switch (depth) {
+	case 32:
+		idx = 2;
+		t->pitch_reg /= 4;
+		break;
+	case 24:
+	default:
+		idx = 4;
+		t->pitch_reg /= 4;
+		break;
+	case 16:
+		idx = 5;
+		t->pitch_reg /= 2;
+		break;
+	}
+
+	t->pitch_reg--;
+
+	t->format = tx_table_le[idx].format;
+	t->filter |= tx_table_le[idx].filter;
+}
+
 static GLboolean r300UpdateTextureUnit(GLcontext * ctx, int unit)
 {
 	struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit];
diff --git a/src/mesa/drivers/dri/radeon/radeon_screen.c b/src/mesa/drivers/dri/radeon/radeon_screen.c
index b476864d035..aa7fb633dd1 100644
--- a/src/mesa/drivers/dri/radeon/radeon_screen.c
+++ b/src/mesa/drivers/dri/radeon/radeon_screen.c
@@ -56,6 +56,7 @@ WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #elif RADEON_COMMON && defined(RADEON_COMMON_FOR_R300)
 #include "r300_context.h"
 #include "r300_fragprog.h"
+#include "r300_tex.h"
 #include "radeon_span.h"
 #endif
 
@@ -952,6 +953,9 @@ static struct __DriverAPIRec radeonAPI = {
    .WaitForSBC      = NULL,
    .SwapBuffersMSC  = NULL,
    .CopySubBuffer   = radeonCopySubBuffer,
+#if RADEON_COMMON && defined(RADEON_COMMON_FOR_R300)
+   .setTexOffset    = r300SetTexOffset,
+#endif
 };
 #else
 static const struct __DriverAPIRec r200API = {