i915tex: Implement SetTexOffset hook.

Only build tested for I830 generation.

8 files changed, 103 insertions, 28 deletions

diff --git a/src/mesa/drivers/dri/i915tex/i830_reg.h b/src/mesa/drivers/dri/i915tex/i830_reg.h
index 24ac524500..41280bca7c 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 e3f34e3944..0d3f053226 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/i915_texstate.c b/src/mesa/drivers/dri/i915tex/i915_texstate.c
index e0ecdfde24..3d68187cf8 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 52db9a95e6..f80e8d6327 100644
--- a/src/mesa/drivers/dri/i915tex/i915_vtbl.c
+++ b/src/mesa/drivers/dri/i915tex/i915_vtbl.c
@@ -381,11 +381,13 @@ 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 44c20af7f8..bcbbb127b1 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 dd01161b5b..5e6df81950 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 6e9938fe53..b77d7a1d8a 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 42679ef9db..abab90cc06 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;
+}