Mesa (master): r300g: add "has HiZ" flag, add ZMask regs

[Marek Olšák]

Module: Mesa
Branch: master
Commit: 6b15a8d2afa1cdf8577d48b1f1644358f1e47b47
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=6b15a8d2afa1cdf8577d48b1f1644358f1e47b47

Author: Marek Olšák <maraeo at gmail.com>
Date:   Thu Jun 24 03:02:50 2010 +0200

r300g: add "has HiZ" flag, add ZMask regs

---

 src/gallium/drivers/r300/r300_chipset.c |    3 +++
 src/gallium/drivers/r300/r300_chipset.h |    2 ++
 src/gallium/drivers/r300/r300_reg.h     |   18 ++++++++++++++++++
 3 files changed, 23 insertions(+), 0 deletions(-)

diff --git a/src/gallium/drivers/r300/r300_chipset.c b/src/gallium/drivers/r300/r300_chipset.c
index e6dca66..511aa7e 100644
--- a/src/gallium/drivers/r300/r300_chipset.c
+++ b/src/gallium/drivers/r300/r300_chipset.c
@@ -36,6 +36,7 @@ void r300_parse_chipset(struct r300_capabilities* caps)
     caps->num_vert_fpus = 2;
     caps->num_tex_units = 16;
     caps->has_tcl = debug_get_bool_option("RADEON_NO_TCL", FALSE) ? FALSE : TRUE;
+    caps->has_hiz = TRUE;
     caps->is_r400 = FALSE;
     caps->is_r500 = FALSE;
     caps->high_second_pipe = FALSE;
@@ -76,6 +77,7 @@ void r300_parse_chipset(struct r300_capabilities* caps)
         case 0x4E54:
         case 0x4E56:
             caps->family = CHIP_FAMILY_RV350;
+            caps->has_hiz = FALSE;
             caps->high_second_pipe = TRUE;
             break;
 
@@ -106,6 +108,7 @@ void r300_parse_chipset(struct r300_capabilities* caps)
         case 0x5B64:
         case 0x5B65:
             caps->family = CHIP_FAMILY_RV370;
+            caps->has_hiz = FALSE;
             caps->high_second_pipe = TRUE;
             break;
 
diff --git a/src/gallium/drivers/r300/r300_chipset.h b/src/gallium/drivers/r300/r300_chipset.h
index ab649c3..65750f5 100644
--- a/src/gallium/drivers/r300/r300_chipset.h
+++ b/src/gallium/drivers/r300/r300_chipset.h
@@ -42,6 +42,8 @@ struct r300_capabilities {
     unsigned num_tex_units;
     /* Whether or not TCL is physically present */
     boolean has_tcl;
+    /* Some chipsets do not have HiZ RAM. */
+    boolean has_hiz;
     /* Whether or not this is RV350 or newer, including all r400 and r500
      * chipsets. The differences compared to the oldest r300 chips are:
      * - Blend LTE/GTE thresholds
diff --git a/src/gallium/drivers/r300/r300_reg.h b/src/gallium/drivers/r300/r300_reg.h
index c783998..1805601 100644
--- a/src/gallium/drivers/r300/r300_reg.h
+++ b/src/gallium/drivers/r300/r300_reg.h
@@ -2673,6 +2673,24 @@ USE OR OTHER DEALINGS IN THE SOFTWARE.
 /* Z Buffer Clear Value */
 #define R300_ZB_DEPTHCLEARVALUE                  0x4f28
 
+/* Z Mask RAM is a Z compression buffer.
+ * Each dword of the Z Mask contains compression info for 16 4x4 pixel blocks,
+ * that is 2 bits for each block.
+ * On chips with 2 Z pipes, every other dword maps to a different pipe.
+ */
+
+/* The dword offset into Z mask RAM (bits 18:4) */
+#define R300_ZB_ZMASK_OFFSET                     0x4f30
+
+/* Z Mask Pitch. */
+#define R300_ZB_ZMASK_PITCH                      0x4f34
+
+/* Access to Z Mask RAM in a manner similar to HiZ RAM.
+ * The indices are autoincrementing. */
+#define R300_ZB_ZMASK_WRINDEX                    0x4f38
+#define R300_ZB_ZMASK_DWORD                      0x4f3c
+#define R300_ZB_ZMASK_RDINDEX                    0x4f40
+
 /* Hierarchical Z Memory Offset */
 #define R300_ZB_HIZ_OFFSET                       0x4f44