From e0885b84a0e10d6a3c976c8dc52a5fdc175635bb Mon Sep 17 00:00:00 2001
From: Michel Dänzer <michel@tungstengraphics.com>
Date: Tue, 22 May 2007 14:08:11 +0200
Subject: i915tex: Implement SetTexOffset hook.

Only build tested for I830 generation.
---
 src/mesa/drivers/dri/i915tex/i830_texstate.c | 41 +++++++++++++++++++++-------
 1 file changed, 31 insertions(+), 10 deletions(-)

(limited to 'src/mesa/drivers/dri/i915tex/i830_texstate.c')

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)
-- 
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