From 49330fc5ac13e25cb201e62995329cffaf5046f0 Mon Sep 17 00:00:00 2001
From: Marek Olšák <maraeo@gmail.com>
Date: Sat, 24 Jul 2010 23:05:40 +0200
Subject: r300g: do not use TXPITCH_EN if the width is POT and the height is
 NPOT

---
 src/gallium/drivers/r300/r300_context.h       | 13 ++++++-------
 src/gallium/drivers/r300/r300_fs.c            |  2 +-
 src/gallium/drivers/r300/r300_state.c         |  2 +-
 src/gallium/drivers/r300/r300_state_derived.c |  2 +-
 src/gallium/drivers/r300/r300_texture.c       |  3 ++-
 src/gallium/drivers/r300/r300_texture_desc.c  |  4 ++++
 6 files changed, 15 insertions(+), 11 deletions(-)

(limited to 'src/gallium/drivers/r300')

diff --git a/src/gallium/drivers/r300/r300_context.h b/src/gallium/drivers/r300/r300_context.h
index 06e4e12558..b4256c6278 100644
--- a/src/gallium/drivers/r300/r300_context.h
+++ b/src/gallium/drivers/r300/r300_context.h
@@ -361,13 +361,12 @@ struct r300_texture_desc {
      */
     unsigned stride_in_bytes_override;
 
-    /* Whether this texture has non-power-of-two dimensions
-     * or a user-specified stride.
-     * It can be either a regular texture or a rectangle one.
-     *
-     * This flag says that hardware must use the stride for addressing
-     * instead of the width.
-     */
+    /* Whether this texture has non-power-of-two dimensions.
+     * It can be either a regular texture or a rectangle one. */
+    boolean is_npot;
+
+    /* This flag says that hardware must use the stride for addressing
+     * instead of the width. */
     boolean uses_stride_addressing;
 
     /* Whether CBZB fast color clear is allowed on the miplevel. */
diff --git a/src/gallium/drivers/r300/r300_fs.c b/src/gallium/drivers/r300/r300_fs.c
index 6eac12bfb9..db5269912e 100644
--- a/src/gallium/drivers/r300/r300_fs.c
+++ b/src/gallium/drivers/r300/r300_fs.c
@@ -173,7 +173,7 @@ static void get_external_state(
             t = (struct r300_texture*)texstate->sampler_views[i]->base.texture;
 
             /* XXX this should probably take into account STR, not just S. */
-            if (t->desc.uses_stride_addressing) {
+            if (t->desc.is_npot) {
                 switch (s->state.wrap_s) {
                     case PIPE_TEX_WRAP_REPEAT:
                         state->unit[i].wrap_mode = RC_WRAP_REPEAT;
diff --git a/src/gallium/drivers/r300/r300_state.c b/src/gallium/drivers/r300/r300_state.c
index 6e2a6ca0e4..bbea7e1589 100644
--- a/src/gallium/drivers/r300/r300_state.c
+++ b/src/gallium/drivers/r300/r300_state.c
@@ -1296,7 +1296,7 @@ static void r300_set_fragment_sampler_views(struct pipe_context* pipe,
             /* Set the texrect factor in the fragment shader.
              * Needed for RECT and NPOT fallback. */
             texture = r300_texture(views[i]->texture);
-            if (texture->desc.uses_stride_addressing) {
+            if (texture->desc.is_npot) {
                 r300->fs_rc_constant_state.dirty = TRUE;
             }
 
diff --git a/src/gallium/drivers/r300/r300_state_derived.c b/src/gallium/drivers/r300/r300_state_derived.c
index e20d8d0fdf..48912e1555 100644
--- a/src/gallium/drivers/r300/r300_state_derived.c
+++ b/src/gallium/drivers/r300/r300_state_derived.c
@@ -583,7 +583,7 @@ static void r300_merge_textures_and_samplers(struct r300_context* r300)
                 texstate->filter0 |= R300_TX_WRAP_T(R300_TX_CLAMP_TO_EDGE);
             }
 
-            if (tex->desc.uses_stride_addressing) {
+            if (tex->desc.is_npot) {
                 /* NPOT textures don't support mip filter, unfortunately.
                  * This prevents incorrect rendering. */
                 texstate->filter0 &= ~R300_TX_MIN_FILTER_MIP_MASK;
diff --git a/src/gallium/drivers/r300/r300_texture.c b/src/gallium/drivers/r300/r300_texture.c
index e99a4630ee..f1118dfd7d 100644
--- a/src/gallium/drivers/r300/r300_texture.c
+++ b/src/gallium/drivers/r300/r300_texture.c
@@ -552,7 +552,8 @@ static void r300_texture_setup_immutable_state(struct r300_screen* screen,
         f->format0 |= R300_TX_PITCH_EN;
         f->format2 = (tex->desc.stride_in_pixels[0] - 1) & 0x1fff;
     } else {
-        /* power of two textures (3D, mipmaps, and no pitch) */
+        /* Power of two textures (3D, mipmaps, and no pitch),
+         * also NPOT textures with a width being POT. */
         f->format0 |= R300_TX_DEPTH(util_logbase2(pt->depth0) & 0xf);
     }
 
diff --git a/src/gallium/drivers/r300/r300_texture_desc.c b/src/gallium/drivers/r300/r300_texture_desc.c
index becaa59bea..02591aa01f 100644
--- a/src/gallium/drivers/r300/r300_texture_desc.c
+++ b/src/gallium/drivers/r300/r300_texture_desc.c
@@ -272,6 +272,10 @@ static void r300_setup_flags(struct r300_texture_desc *desc)
         (desc->stride_in_bytes_override &&
          stride_to_width(desc->b.b.format,
                          desc->stride_in_bytes_override) != desc->b.b.width0);
+
+    desc->is_npot =
+        desc->uses_stride_addressing ||
+        !util_is_power_of_two(desc->b.b.height0);
 }
 
 static void r300_setup_cbzb_flags(struct r300_screen *rscreen,
-- 
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