Checkpoint lifting of intel_mipmap_tree (intel_mipmap_tree -> pipe_mipmap_tree and move some code)

1 files changed, 357 insertions, 5 deletions

diff --git a/src/mesa/drivers/dri/intel/intel_tex_layout.c b/src/mesa/drivers/dri/intel/intel_tex_layout.c
index fcb5cc3906..bedd835cbb 100644
--- a/src/mesa/drivers/dri/intel/intel_tex_layout.c
+++ b/src/mesa/drivers/dri/intel/intel_tex_layout.c
@@ -30,17 +30,57 @@
   *   Michel Dänzer <michel@tungstengraphics.com>
   */
 
-#include "intel_mipmap_tree.h"
-#include "intel_tex_layout.h"
 #include "macros.h"
+#include "pipe/p_state.h"
+#include "intel_mipmap_tree.h"
+
 
+static GLuint minify( GLuint d )
+{
+   return MAX2(1, d>>1);
+}
 
 static int align(int value, int alignment)
 {
    return (value + alignment - 1) & ~(alignment - 1);
 }
 
-void i945_miptree_layout_2d( struct intel_mipmap_tree *mt )
+
+static void
+mipmaptree_set_level_info(struct pipe_mipmap_tree *mt,
+                          GLuint level,
+                          GLuint nr_images,
+                          GLuint x, GLuint y, GLuint w, GLuint h, GLuint d)
+{
+   assert(level < MAX_TEXTURE_LEVELS);
+
+   mt->level[level].width = w;
+   mt->level[level].height = h;
+   mt->level[level].depth = d;
+   mt->level[level].level_offset = (x + y * mt->pitch) * mt->cpp;
+   mt->level[level].nr_images = nr_images;
+
+   /*
+   DBG("%s level %d size: %d,%d,%d offset %d,%d (0x%x)\n", __FUNCTION__,
+       level, w, h, d, x, y, mt->level[level].level_offset);
+   */
+
+   /* Not sure when this would happen, but anyway: 
+    */
+   if (mt->level[level].image_offset) {
+      free(mt->level[level].image_offset);
+      mt->level[level].image_offset = NULL;
+   }
+
+   assert(nr_images);
+
+   mt->level[level].image_offset = malloc(nr_images * sizeof(GLuint));
+   mt->level[level].image_offset[0] = 0;
+}
+
+
+static void
+i945_miptree_layout_2d( struct pipe_mipmap_tree *mt )
 {
    GLint align_h = 2, align_w = 4;
    GLuint level;
@@ -73,8 +113,7 @@ void i945_miptree_layout_2d( struct intel_mipmap_tree *mt )
    for ( level = mt->first_level ; level <= mt->last_level ; level++ ) {
       GLuint img_height;
 
-      intel_miptree_set_level_info(mt, level, 1, x, y, width, 
-				   height, 1);
+      mipmaptree_set_level_info(mt, level, 1, x, y, width, height, 1);
 
       if (mt->compressed)
 	 img_height = MAX2(1, height/4);
@@ -100,3 +139,316 @@ void i945_miptree_layout_2d( struct intel_mipmap_tree *mt )
       height = minify(height);
    }
 }
+
+
+static const GLint initial_offsets[6][2] = {
+   {0, 0},
+   {0, 2},
+   {1, 0},
+   {1, 2},
+   {1, 1},
+   {1, 3}
+};
+
+static const GLint step_offsets[6][2] = {
+   {0, 2},
+   {0, 2},
+   {-1, 2},
+   {-1, 2},
+   {-1, 1},
+   {-1, 1}
+};
+
+
+GLboolean
+i915_miptree_layout(struct pipe_context *pipe, struct pipe_mipmap_tree * mt)
+{
+   GLint level;
+
+   switch (mt->target) {
+   case GL_TEXTURE_CUBE_MAP:{
+         const GLuint dim = mt->width0;
+         GLuint face;
+         GLuint lvlWidth = mt->width0, lvlHeight = mt->height0;
+
+         assert(lvlWidth == lvlHeight); /* cubemap images are square */
+
+         /* double pitch for cube layouts */
+         mt->pitch = ((dim * mt->cpp * 2 + 3) & ~3) / mt->cpp;
+         mt->total_height = dim * 4;
+
+         for (level = mt->first_level; level <= mt->last_level; level++) {
+            intel_miptree_set_level_info(mt, level, 6,
+                                         0, 0,
+                                         /*OLD: mt->pitch, mt->total_height,*/
+                                         lvlWidth, lvlHeight,
+                                         1);
+            lvlWidth /= 2;
+            lvlHeight /= 2;
+         }
+
+         for (face = 0; face < 6; face++) {
+            GLuint x = initial_offsets[face][0] * dim;
+            GLuint y = initial_offsets[face][1] * dim;
+            GLuint d = dim;
+
+            for (level = mt->first_level; level <= mt->last_level; level++) {
+               intel_miptree_set_image_offset(mt, level, face, x, y);
+
+               if (d == 0)
+                  _mesa_printf("cube mipmap %d/%d (%d..%d) is 0x0\n",
+                               face, level, mt->first_level, mt->last_level);
+
+               d >>= 1;
+               x += step_offsets[face][0] * d;
+               y += step_offsets[face][1] * d;
+            }
+         }
+         break;
+      }
+   case GL_TEXTURE_3D:{
+         GLuint width = mt->width0;
+         GLuint height = mt->height0;
+         GLuint depth = mt->depth0;
+         GLuint stack_height = 0;
+
+         /* Calculate the size of a single slice. 
+          */
+         mt->pitch = ((mt->width0 * mt->cpp + 3) & ~3) / mt->cpp;
+
+         /* XXX: hardware expects/requires 9 levels at minimum.
+          */
+         for (level = mt->first_level; level <= MAX2(8, mt->last_level);
+              level++) {
+            intel_miptree_set_level_info(mt, level, depth, 0, mt->total_height,
+                                         width, height, depth);
+
+
+            stack_height += MAX2(2, height);
+
+            width = minify(width);
+            height = minify(height);
+            depth = minify(depth);
+         }
+
+         /* Fixup depth image_offsets: 
+          */
+         depth = mt->depth0;
+         for (level = mt->first_level; level <= mt->last_level; level++) {
+            GLuint i;
+            for (i = 0; i < depth; i++) 
+               intel_miptree_set_image_offset(mt, level, i,
+                                              0, i * stack_height);
+
+            depth = minify(depth);
+         }
+
+
+         /* Multiply slice size by texture depth for total size.  It's
+          * remarkable how wasteful of memory the i915 texture layouts
+          * are.  They are largely fixed in the i945.
+          */
+         mt->total_height = stack_height * mt->depth0;
+         break;
+      }
+
+   default:{
+         GLuint width = mt->width0;
+         GLuint height = mt->height0;
+	 GLuint img_height;
+
+         mt->pitch = ((mt->width0 * mt->cpp + 3) & ~3) / mt->cpp;
+         mt->total_height = 0;
+
+         for (level = mt->first_level; level <= mt->last_level; level++) {
+            intel_miptree_set_level_info(mt, level, 1,
+                                         0, mt->total_height,
+                                         width, height, 1);
+
+            if (mt->compressed)
+               img_height = MAX2(1, height / 4);
+            else
+               img_height = (MAX2(2, height) + 1) & ~1;
+
+	    mt->total_height += img_height;
+
+            width = minify(width);
+            height = minify(height);
+         }
+         break;
+      }
+   }
+   /*
+   DBG("%s: %dx%dx%d - sz 0x%x\n", __FUNCTION__,
+       mt->pitch,
+       mt->total_height, mt->cpp, mt->pitch * mt->total_height * mt->cpp);
+   */
+
+   return GL_TRUE;
+}
+
+
+GLboolean
+i945_miptree_layout(struct pipe_context *pipe, struct pipe_mipmap_tree * mt)
+{
+   GLint level;
+
+   switch (mt->target) {
+   case GL_TEXTURE_CUBE_MAP:{
+         const GLuint dim = mt->width0;
+         GLuint face;
+         GLuint lvlWidth = mt->width0, lvlHeight = mt->height0;
+
+         assert(lvlWidth == lvlHeight); /* cubemap images are square */
+
+         /* Depending on the size of the largest images, pitch can be
+          * determined either by the old-style packing of cubemap faces,
+          * or the final row of 4x4, 2x2 and 1x1 faces below this. 
+          */
+         if (dim > 32)
+            mt->pitch = ((dim * mt->cpp * 2 + 3) & ~3) / mt->cpp;
+         else
+            mt->pitch = 14 * 8;
+
+         mt->total_height = dim * 4 + 4;
+
+         /* Set all the levels to effectively occupy the whole rectangular region. 
+          */
+         for (level = mt->first_level; level <= mt->last_level; level++) {
+            intel_miptree_set_level_info(mt, level, 6,
+                                         0, 0,
+                                         lvlWidth, lvlHeight, 1);
+	    lvlWidth /= 2;
+	    lvlHeight /= 2;
+	 }
+
+
+         for (face = 0; face < 6; face++) {
+            GLuint x = initial_offsets[face][0] * dim;
+            GLuint y = initial_offsets[face][1] * dim;
+            GLuint d = dim;
+
+            if (dim == 4 && face >= 4) {
+               y = mt->total_height - 4;
+               x = (face - 4) * 8;
+            }
+            else if (dim < 4 && (face > 0 || mt->first_level > 0)) {
+               y = mt->total_height - 4;
+               x = face * 8;
+            }
+
+            for (level = mt->first_level; level <= mt->last_level; level++) {
+               intel_miptree_set_image_offset(mt, level, face, x, y);
+
+               d >>= 1;
+
+               switch (d) {
+               case 4:
+                  switch (face) {
+                  case FACE_POS_X:
+                  case FACE_NEG_X:
+                     x += step_offsets[face][0] * d;
+                     y += step_offsets[face][1] * d;
+                     break;
+                  case FACE_POS_Y:
+                  case FACE_NEG_Y:
+                     y += 12;
+                     x -= 8;
+                     break;
+                  case FACE_POS_Z:
+                  case FACE_NEG_Z:
+                     y = mt->total_height - 4;
+                     x = (face - 4) * 8;
+                     break;
+                  }
+
+               case 2:
+                  y = mt->total_height - 4;
+                  x = 16 + face * 8;
+                  break;
+
+               case 1:
+                  x += 48;
+                  break;
+
+               default:
+                  x += step_offsets[face][0] * d;
+                  y += step_offsets[face][1] * d;
+                  break;
+               }
+            }
+         }
+         break;
+      }
+   case GL_TEXTURE_3D:{
+         GLuint width = mt->width0;
+         GLuint height = mt->height0;
+         GLuint depth = mt->depth0;
+         GLuint pack_x_pitch, pack_x_nr;
+         GLuint pack_y_pitch;
+         GLuint level;
+
+         mt->pitch = ((mt->width0 * mt->cpp + 3) & ~3) / mt->cpp;
+         mt->total_height = 0;
+
+         pack_y_pitch = MAX2(mt->height0, 2);
+         pack_x_pitch = mt->pitch;
+         pack_x_nr = 1;
+
+         for (level = mt->first_level; level <= mt->last_level; level++) {
+            GLuint nr_images = mt->target == GL_TEXTURE_3D ? depth : 6;
+            GLint x = 0;
+            GLint y = 0;
+            GLint q, j;
+
+            intel_miptree_set_level_info(mt, level, nr_images,
+                                         0, mt->total_height,
+                                         width, height, depth);
+
+            for (q = 0; q < nr_images;) {
+               for (j = 0; j < pack_x_nr && q < nr_images; j++, q++) {
+                  intel_miptree_set_image_offset(mt, level, q, x, y);
+                  x += pack_x_pitch;
+               }
+
+               x = 0;
+               y += pack_y_pitch;
+            }
+
+
+            mt->total_height += y;
+
+            if (pack_x_pitch > 4) {
+               pack_x_pitch >>= 1;
+               pack_x_nr <<= 1;
+               assert(pack_x_pitch * pack_x_nr <= mt->pitch);
+            }
+
+            if (pack_y_pitch > 2) {
+               pack_y_pitch >>= 1;
+            }
+
+            width = minify(width);
+            height = minify(height);
+            depth = minify(depth);
+         }
+         break;
+      }
+
+   case GL_TEXTURE_1D:
+   case GL_TEXTURE_2D:
+   case GL_TEXTURE_RECTANGLE_ARB:
+         i945_miptree_layout_2d(mt);
+         break;
+   default:
+      _mesa_problem(NULL, "Unexpected tex target in i945_miptree_layout()");
+   }
+
+   /*
+   DBG("%s: %dx%dx%d - sz 0x%x\n", __FUNCTION__,
+       mt->pitch,
+       mt->total_height, mt->cpp, mt->pitch * mt->total_height * mt->cpp);
+   */
+
+   return GL_TRUE;
+}