Move 965 textured-video out to a separate file.

1 files changed, 827 insertions, 0 deletions

diff --git a/src/i965_video.c b/src/i965_video.c
new file mode 100644
index 00000000..3677d9d3
--- /dev/null
+++ b/src/i965_video.c
@@ -0,0 +1,827 @@
+/*
+ * Copyright © 2006 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ * Authors:
+ *    Eric Anholt <eric@anholt.net>
+ *    Keith Packard <keithp@keithp.com>
+ *
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "xf86.h"
+#include "xf86_OSproc.h"
+#include "xf86xv.h"
+#include "fourcc.h"
+
+#include "i830.h"
+#include "i830_video.h"
+#include "brw_defines.h"
+#include "brw_structs.h"
+
+static const CARD32 sip_kernel_static[][4] = {
+/*    wait (1) a0<1>UW a145<0,1,0>UW { align1 +  } */
+    { 0x00000030, 0x20000108, 0x00001220, 0x00000000 },
+/*    nop (4) g0<1>UD { align1 +  } */
+    { 0x0040007e, 0x20000c21, 0x00690000, 0x00000000 },
+/*    nop (4) g0<1>UD { align1 +  } */
+    { 0x0040007e, 0x20000c21, 0x00690000, 0x00000000 },
+/*    nop (4) g0<1>UD { align1 +  } */
+    { 0x0040007e, 0x20000c21, 0x00690000, 0x00000000 },
+/*    nop (4) g0<1>UD { align1 +  } */
+    { 0x0040007e, 0x20000c21, 0x00690000, 0x00000000 },
+/*    nop (4) g0<1>UD { align1 +  } */
+    { 0x0040007e, 0x20000c21, 0x00690000, 0x00000000 },
+/*    nop (4) g0<1>UD { align1 +  } */
+    { 0x0040007e, 0x20000c21, 0x00690000, 0x00000000 },
+/*    nop (4) g0<1>UD { align1 +  } */
+    { 0x0040007e, 0x20000c21, 0x00690000, 0x00000000 },
+/*    nop (4) g0<1>UD { align1 +  } */
+    { 0x0040007e, 0x20000c21, 0x00690000, 0x00000000 },
+/*    nop (4) g0<1>UD { align1 +  } */
+    { 0x0040007e, 0x20000c21, 0x00690000, 0x00000000 },
+};
+   
+/*
+ * this program computes dA/dx and dA/dy for the texture coordinates along
+ * with the base texture coordinate. It was extracted from the Mesa driver.
+ * It uses about 10 GRF registers.
+ */
+
+#define SF_KERNEL_NUM_GRF  16
+#define SF_MAX_THREADS	   1
+
+static const CARD32 sf_kernel_static[][4] = {
+#include "sf_prog.h"
+};
+
+/*
+ * Ok, this kernel picks up the required data flow values in g0 and g1
+ * and passes those along in m0 and m1. In m2-m9, it sticks constant
+ * values (bright pink).
+ */
+
+/* Our PS kernel uses less than 32 GRF registers (about 20) */
+#define PS_KERNEL_NUM_GRF   32
+#define PS_MAX_THREADS	   32
+
+#define BRW_GRF_BLOCKS(nreg)	((nreg + 15) / 16 - 1)
+
+static const CARD32 ps_kernel_static[][4] = {
+#include "wm_prog.h"
+};
+
+#define ALIGN(i,m)    (((i) + (m) - 1) & ~((m) - 1))
+#define MIN(a,b) ((a) < (b) ? (a) : (b))
+
+#define WM_BINDING_TABLE_ENTRIES    2
+
+static CARD32 float_to_uint (float f) {
+   union {CARD32 i; float f;} x;
+   x.f = f;
+   return x.i;
+}
+
+#if 0
+static struct {
+   CARD32   svg_ctl;
+   char	    *name;
+} svg_ctl_bits[] = {
+   { BRW_SVG_CTL_GS_BA, "General State Base Address" },
+   { BRW_SVG_CTL_SS_BA, "Surface State Base Address" },
+   { BRW_SVG_CTL_IO_BA, "Indirect Object Base Address" },
+   { BRW_SVG_CTL_GS_AUB, "Generate State Access Upper Bound" },
+   { BRW_SVG_CTL_IO_AUB, "Indirect Object Access Upper Bound" },
+   { BRW_SVG_CTL_SIP, "System Instruction Pointer" },
+   { 0, 0 },
+};
+
+static void
+brw_debug (ScrnInfoPtr pScrn, char *when)
+{
+   I830Ptr pI830 = I830PTR(pScrn);
+   int	    i;
+   CARD32   v;
+   
+   I830Sync (pScrn);
+   ErrorF("brw_debug: %s\n", when);
+   for (i = 0; svg_ctl_bits[i].name; i++) {
+      OUTREG(BRW_SVG_CTL, svg_ctl_bits[i].svg_ctl);
+      v = INREG(BRW_SVG_RDATA);
+      ErrorF("\t%34.34s: 0x%08x\n", svg_ctl_bits[i].name, v);
+   }
+}
+#endif
+
+#define WATCH_SF 0
+#define WATCH_WIZ 0
+#define WATCH_STATS 0
+
+void
+I965DisplayVideoTextured(ScrnInfoPtr pScrn, I830PortPrivPtr pPriv, int id,
+			 RegionPtr dstRegion,
+			 short width, short height, int video_pitch,
+			 int x1, int y1, int x2, int y2,
+			 short src_w, short src_h,
+			 short drw_w, short drw_h,
+			 DrawablePtr pDraw)
+{
+   I830Ptr pI830 = I830PTR(pScrn);
+   BoxPtr pbox;
+   int nbox, dxo, dyo;
+   int urb_vs_start, urb_vs_size;
+   int urb_gs_start, urb_gs_size;
+   int urb_clip_start, urb_clip_size;
+   int urb_sf_start, urb_sf_size;
+   int urb_cs_start, urb_cs_size;
+   struct brw_surface_state *dest_surf_state;
+   struct brw_surface_state *src_surf_state;
+   struct brw_sampler_state *src_sampler_state;
+   struct brw_vs_unit_state *vs_state;
+   struct brw_sf_unit_state *sf_state;
+   struct brw_wm_unit_state *wm_state;
+   struct brw_cc_unit_state *cc_state;
+   struct brw_cc_viewport *cc_viewport;
+   struct brw_instruction *sf_kernel;
+   struct brw_instruction *ps_kernel;
+   struct brw_instruction *sip_kernel;
+   float *vb;
+    CARD32 *binding_table;
+   Bool first_output = TRUE;
+   int dest_surf_offset, src_surf_offset, src_sampler_offset, vs_offset;
+   int sf_offset, wm_offset, cc_offset, vb_offset, cc_viewport_offset;
+   int wm_scratch_offset;
+   int sf_kernel_offset, ps_kernel_offset, sip_kernel_offset;
+   int binding_table_offset;
+   int next_offset, total_state_size;
+   int vb_size = (4 * 4) * 4; /* 4 DWORDS per vertex */
+   char *state_base;
+   int state_base_offset;
+
+#if 0
+   ErrorF("BroadwaterDisplayVideoTextured: %dx%d (pitch %d)\n", width, height,
+	  video_pitch);
+#endif
+
+   /* enable debug */
+   OUTREG (INST_PM,
+	   (1 << (16 + 4)) |
+	   (1 << 4));
+#if 0
+   ErrorF ("INST_PM 0x%08x\n", INREG(INST_PM));
+#endif
+   
+   assert((id == FOURCC_UYVY) || (id == FOURCC_YUY2));
+
+   /* Tell the rotation code that we have stomped its invariant state by
+    * setting a high bit.  We don't use any invariant 3D state for video, so we
+    * don't have to worry about it ourselves.
+    */
+   *pI830->used3D |= 1 << 30;
+
+#ifdef XF86DRI
+   /* Tell the DRI that we're smashing its state. */
+   if (pI830->directRenderingEnabled) {
+     drmI830Sarea *pSAREAPriv = DRIGetSAREAPrivate(pScrn->pScreen);
+
+     pSAREAPriv->ctxOwner = DRIGetContext(pScrn->pScreen);
+   }
+#endif /* XF86DRI */
+
+   next_offset = 0;
+
+   /* Set up our layout of state in framebuffer.  First the general state: */
+   vs_offset = ALIGN(next_offset, 64);
+   next_offset = vs_offset + sizeof(*vs_state);
+   sf_offset = ALIGN(next_offset, 32);
+   next_offset = sf_offset + sizeof(*sf_state);
+   wm_offset = ALIGN(next_offset, 32);
+   next_offset = wm_offset + sizeof(*wm_state);
+   wm_scratch_offset = ALIGN(next_offset, 1024);
+   next_offset = wm_scratch_offset + 1024 * PS_MAX_THREADS;
+   cc_offset = ALIGN(next_offset, 32);
+   next_offset = cc_offset + sizeof(*cc_state);
+
+   sf_kernel_offset = ALIGN(next_offset, 64);
+   next_offset = sf_kernel_offset + sizeof (sf_kernel_static);
+   ps_kernel_offset = ALIGN(next_offset, 64);
+   next_offset = ps_kernel_offset + sizeof (ps_kernel_static);
+   sip_kernel_offset = ALIGN(next_offset, 64);
+   next_offset = sip_kernel_offset + sizeof (sip_kernel_static);
+   cc_viewport_offset = ALIGN(next_offset, 32);
+   next_offset = cc_viewport_offset + sizeof(*cc_viewport);
+
+   src_sampler_offset = ALIGN(next_offset, 32);
+   next_offset = src_sampler_offset + sizeof(*src_sampler_state);
+
+   /* Align VB to native size of elements, for safety */
+   vb_offset = ALIGN(next_offset, 8);
+   next_offset = vb_offset + vb_size;
+
+   /* And then the general state: */
+   dest_surf_offset = ALIGN(next_offset, 32);
+   next_offset = dest_surf_offset + sizeof(*dest_surf_state);
+   src_surf_offset = ALIGN(next_offset, 32);
+   next_offset = src_surf_offset + sizeof(*src_surf_state);
+   binding_table_offset = ALIGN(next_offset, 32);
+   next_offset = binding_table_offset + (WM_BINDING_TABLE_ENTRIES * 4);
+
+   /* Allocate an area in framebuffer for our state layout we just set up */
+   total_state_size = next_offset;
+   assert (total_state_size < BRW_LINEAR_EXTRA);
+
+   /*
+    * Use the extra space allocated at the end of the Xv buffer
+    */
+   state_base_offset = pPriv->extra_offset;
+   state_base_offset = ALIGN(state_base_offset, 64);
+
+   state_base = (char *)(pI830->FbBase + state_base_offset);
+   /* Set up our pointers to state structures in framebuffer.  It would probably
+    * be a good idea to fill these structures out in system memory and then dump
+    * them there, instead.
+    */
+   vs_state = (void *)(state_base + vs_offset);
+   sf_state = (void *)(state_base + sf_offset);
+   wm_state = (void *)(state_base + wm_offset);
+   cc_state = (void *)(state_base + cc_offset);
+   sf_kernel = (void *)(state_base + sf_kernel_offset);
+   ps_kernel = (void *)(state_base + ps_kernel_offset);
+   sip_kernel = (void *)(state_base + sip_kernel_offset);
+   
+   cc_viewport = (void *)(state_base + cc_viewport_offset);
+   dest_surf_state = (void *)(state_base + dest_surf_offset);
+   src_surf_state = (void *)(state_base + src_surf_offset);
+   src_sampler_state = (void *)(state_base + src_sampler_offset);
+   binding_table = (void *)(state_base + binding_table_offset);
+   vb = (void *)(state_base + vb_offset);
+
+   /* For 3D, the VS must have 8, 12, 16, 24, or 32 VUEs allocated to it.
+    * A VUE consists of a 256-bit vertex header followed by the vertex data,
+    * which in our case is 4 floats (128 bits), thus a single 512-bit URB
+    * entry.
+    */
+#define URB_VS_ENTRIES	      8
+#define URB_VS_ENTRY_SIZE     1
+   
+#define URB_GS_ENTRIES	      0
+#define URB_GS_ENTRY_SIZE     0
+   
+#define URB_CLIP_ENTRIES      0
+#define URB_CLIP_ENTRY_SIZE   0
+   
+   /* The SF kernel we use outputs only 4 256-bit registers, leading to an
+    * entry size of 2 512-bit URBs.  We don't need to have many entries to
+    * output as we're generally working on large rectangles and don't care
+    * about having WM threads running on different rectangles simultaneously.
+    */
+#define URB_SF_ENTRIES	      1
+#define URB_SF_ENTRY_SIZE     2
+
+#define URB_CS_ENTRIES	      0
+#define URB_CS_ENTRY_SIZE     0
+   
+   urb_vs_start = 0;
+   urb_vs_size = URB_VS_ENTRIES * URB_VS_ENTRY_SIZE;
+   urb_gs_start = urb_vs_start + urb_vs_size;
+   urb_gs_size = URB_GS_ENTRIES * URB_GS_ENTRY_SIZE;
+   urb_clip_start = urb_gs_start + urb_gs_size;
+   urb_clip_size = URB_CLIP_ENTRIES * URB_CLIP_ENTRY_SIZE;
+   urb_sf_start = urb_clip_start + urb_clip_size;
+   urb_sf_size = URB_SF_ENTRIES * URB_SF_ENTRY_SIZE;
+   urb_cs_start = urb_sf_start + urb_sf_size;
+   urb_cs_size = URB_CS_ENTRIES * URB_CS_ENTRY_SIZE;
+
+   /* We'll be poking the state buffers that could be in use by the 3d hardware
+    * here, but we should have synced the 3D engine already in I830PutImage.
+    */
+
+   memset (cc_viewport, 0, sizeof (*cc_viewport));
+   cc_viewport->min_depth = -1.e35;
+   cc_viewport->max_depth = 1.e35;
+
+   /* Color calculator state */
+   memset(cc_state, 0, sizeof(*cc_state));
+   cc_state->cc0.stencil_enable = 0;   /* disable stencil */
+   cc_state->cc2.depth_test = 0;       /* disable depth test */
+   cc_state->cc2.logicop_enable = 1;   /* enable logic op */
+   cc_state->cc3.ia_blend_enable = 1;  /* blend alpha just like colors */
+   cc_state->cc3.blend_enable = 0;     /* disable color blend */
+   cc_state->cc3.alpha_test = 0;       /* disable alpha test */
+   cc_state->cc4.cc_viewport_state_offset = (state_base_offset + cc_viewport_offset) >> 5;
+   cc_state->cc5.dither_enable = 0;    /* disable dither */
+   cc_state->cc5.logicop_func = 0xc;   /* WHITE */
+   cc_state->cc5.statistics_enable = 1;
+   cc_state->cc5.ia_blend_function = BRW_BLENDFUNCTION_ADD;
+   cc_state->cc5.ia_src_blend_factor = BRW_BLENDFACTOR_ONE;
+   cc_state->cc5.ia_dest_blend_factor = BRW_BLENDFACTOR_ONE;
+
+   /* Upload system kernel */
+   memcpy (sip_kernel, sip_kernel_static, sizeof (sip_kernel_static));
+   
+   /* Set up the state buffer for the destination surface */
+   memset(dest_surf_state, 0, sizeof(*dest_surf_state));
+   dest_surf_state->ss0.surface_type = BRW_SURFACE_2D;
+   dest_surf_state->ss0.data_return_format = BRW_SURFACERETURNFORMAT_FLOAT32;
+   if (pI830->cpp == 2) {
+      dest_surf_state->ss0.surface_format = BRW_SURFACEFORMAT_B5G6R5_UNORM;
+   } else {
+      dest_surf_state->ss0.surface_format = BRW_SURFACEFORMAT_B8G8R8A8_UNORM;
+   }
+   dest_surf_state->ss0.writedisable_alpha = 0;
+   dest_surf_state->ss0.writedisable_red = 0;
+   dest_surf_state->ss0.writedisable_green = 0;
+   dest_surf_state->ss0.writedisable_blue = 0;
+   dest_surf_state->ss0.color_blend = 1;
+   dest_surf_state->ss0.vert_line_stride = 0;
+   dest_surf_state->ss0.vert_line_stride_ofs = 0;
+   dest_surf_state->ss0.mipmap_layout_mode = 0;
+   dest_surf_state->ss0.render_cache_read_mode = 0;
+   
+   dest_surf_state->ss1.base_addr = pI830->FrontBuffer.Start;
+   dest_surf_state->ss2.height = pScrn->virtualY - 1;
+   dest_surf_state->ss2.width = pScrn->virtualX - 1;
+   dest_surf_state->ss2.mip_count = 0;
+   dest_surf_state->ss2.render_target_rotation = 0;
+   dest_surf_state->ss3.pitch = (pI830->displayWidth * pI830->cpp) - 1;
+
+   /* Set up the source surface state buffer */
+   memset(src_surf_state, 0, sizeof(*src_surf_state));
+   src_surf_state->ss0.surface_type = BRW_SURFACE_2D;
+/*   src_surf_state->ss0.data_return_format = BRW_SURFACERETURNFORMAT_FLOAT32; */
+   switch (id) {
+   case FOURCC_YUY2:
+      src_surf_state->ss0.surface_format = BRW_SURFACEFORMAT_YCRCB_NORMAL;
+      break;
+   case FOURCC_UYVY:
+      src_surf_state->ss0.surface_format = BRW_SURFACEFORMAT_YCRCB_SWAPY;
+      break;
+   }
+   src_surf_state->ss0.writedisable_alpha = 0;
+   src_surf_state->ss0.writedisable_red = 0;
+   src_surf_state->ss0.writedisable_green = 0;
+   src_surf_state->ss0.writedisable_blue = 0;
+   src_surf_state->ss0.color_blend = 1;
+   src_surf_state->ss0.vert_line_stride = 0;
+   src_surf_state->ss0.vert_line_stride_ofs = 0;
+   src_surf_state->ss0.mipmap_layout_mode = 0;
+   src_surf_state->ss0.render_cache_read_mode = 0;
+   
+   src_surf_state->ss1.base_addr = pPriv->YBuf0offset;
+   src_surf_state->ss2.width = width - 1;
+   src_surf_state->ss2.height = height - 1;
+   src_surf_state->ss2.mip_count = 0;
+   src_surf_state->ss2.render_target_rotation = 0;
+   src_surf_state->ss3.pitch = video_pitch - 1;
+
+   /* Set up a binding table for our two surfaces.  Only the PS will use it */
+   /* XXX: are these offset from the right place? */
+   binding_table[0] = state_base_offset + dest_surf_offset;
+   binding_table[1] = state_base_offset + src_surf_offset;
+
+   /* Set up the packed YUV source sampler.  Doesn't do colorspace conversion.
+    */
+   memset(src_sampler_state, 0, sizeof(*src_sampler_state));
+   src_sampler_state->ss0.min_filter = BRW_MAPFILTER_LINEAR;
+   src_sampler_state->ss0.mag_filter = BRW_MAPFILTER_LINEAR;
+   src_sampler_state->ss1.r_wrap_mode = BRW_TEXCOORDMODE_CLAMP;
+   src_sampler_state->ss1.s_wrap_mode = BRW_TEXCOORDMODE_CLAMP;
+   src_sampler_state->ss1.t_wrap_mode = BRW_TEXCOORDMODE_CLAMP;
+
+   /* Set up the vertex shader to be disabled (passthrough) */
+   memset(vs_state, 0, sizeof(*vs_state));
+   vs_state->thread4.nr_urb_entries = URB_VS_ENTRIES;
+   vs_state->thread4.urb_entry_allocation_size = URB_VS_ENTRY_SIZE - 1;
+   vs_state->vs6.vs_enable = 0;
+   vs_state->vs6.vert_cache_disable = 1;
+
+   /* Set up the SF kernel to do coord interp: for each attribute,
+    * calculate dA/dx and dA/dy.  Hand these interpolation coefficients
+    * back to SF which then hands pixels off to WM.
+    */
+
+   memcpy (sf_kernel, sf_kernel_static, sizeof (sf_kernel_static));
+   memset(sf_state, 0, sizeof(*sf_state));
+#if 0
+   ErrorF ("sf kernel: 0x%08x\n", state_base_offset + sf_kernel_offset);
+#endif
+   sf_state->thread0.kernel_start_pointer = 
+	       (state_base_offset + sf_kernel_offset) >> 6;
+   sf_state->thread0.grf_reg_count = BRW_GRF_BLOCKS(SF_KERNEL_NUM_GRF);
+   sf_state->sf1.single_program_flow = 1; /* XXX */
+   sf_state->sf1.binding_table_entry_count = 0;
+   sf_state->sf1.thread_priority = 0;
+   sf_state->sf1.floating_point_mode = 0; /* Mesa does this */
+   sf_state->sf1.illegal_op_exception_enable = 1;
+   sf_state->sf1.mask_stack_exception_enable = 1;
+   sf_state->sf1.sw_exception_enable = 1;
+   sf_state->thread2.per_thread_scratch_space = 0;
+   sf_state->thread2.scratch_space_base_pointer = 0; /* not used in our kernel */
+   sf_state->thread3.const_urb_entry_read_length = 0; /* no const URBs */
+   sf_state->thread3.const_urb_entry_read_offset = 0; /* no const URBs */
+   sf_state->thread3.urb_entry_read_length = 1; /* 1 URB per vertex */
+   sf_state->thread3.urb_entry_read_offset = 0;
+   sf_state->thread3.dispatch_grf_start_reg = 3;
+   sf_state->thread4.max_threads = SF_MAX_THREADS - 1;
+   sf_state->thread4.urb_entry_allocation_size = URB_SF_ENTRY_SIZE - 1;
+   sf_state->thread4.nr_urb_entries = URB_SF_ENTRIES;
+   sf_state->thread4.stats_enable = 1;
+   sf_state->sf5.viewport_transform = FALSE; /* skip viewport */
+   sf_state->sf6.cull_mode = BRW_CULLMODE_NONE;
+   sf_state->sf6.scissor = 0;
+   sf_state->sf7.trifan_pv = 2;
+   sf_state->sf6.dest_org_vbias = 0x8;
+   sf_state->sf6.dest_org_hbias = 0x8;
+
+   memcpy (ps_kernel, ps_kernel_static, sizeof (ps_kernel_static));
+#if 0
+   ErrorF ("ps kernel: 0x%08x\n", state_base_offset + ps_kernel_offset);
+#endif
+   memset (wm_state, 0, sizeof (*wm_state));
+   wm_state->thread0.kernel_start_pointer = 
+	    (state_base_offset + ps_kernel_offset) >> 6;
+   wm_state->thread0.grf_reg_count = BRW_GRF_BLOCKS(PS_KERNEL_NUM_GRF);
+   wm_state->thread1.single_program_flow = 1; /* XXX */
+   wm_state->thread1.binding_table_entry_count = 2;
+   /* Though we never use the scratch space in our WM kernel, it has to be
+    * set, and the minimum allocation is 1024 bytes.
+    */
+   wm_state->thread2.scratch_space_base_pointer = (state_base_offset +
+						   wm_scratch_offset) >> 10;
+   wm_state->thread2.per_thread_scratch_space = 0; /* 1024 bytes */
+   wm_state->thread3.dispatch_grf_start_reg = 3; /* XXX */
+   wm_state->thread3.const_urb_entry_read_length = 0;
+   wm_state->thread3.const_urb_entry_read_offset = 0;
+   wm_state->thread3.urb_entry_read_length = 1; /* XXX */
+   wm_state->thread3.urb_entry_read_offset = 0; /* XXX */
+   wm_state->wm4.stats_enable = 1;
+   wm_state->wm4.sampler_state_pointer = (state_base_offset + src_sampler_offset) >> 5;
+   wm_state->wm4.sampler_count = 1; /* 1-4 samplers used */
+   wm_state->wm5.max_threads = PS_MAX_THREADS - 1;
+   wm_state->wm5.thread_dispatch_enable = 1;
+   wm_state->wm5.enable_16_pix = 1;
+   wm_state->wm5.enable_8_pix = 0;
+   wm_state->wm5.early_depth_test = 1;
+
+   {
+      BEGIN_LP_RING(2);
+      OUT_RING(MI_FLUSH | 
+	       MI_STATE_INSTRUCTION_CACHE_FLUSH |
+	       BRW_MI_GLOBAL_SNAPSHOT_RESET);
+      OUT_RING(MI_NOOP);
+      ADVANCE_LP_RING();
+   }
+   
+/*    brw_debug (pScrn, "before base address modify"); */
+   { BEGIN_LP_RING(12);
+   /* Match Mesa driver setup */
+   OUT_RING(BRW_PIPELINE_SELECT | PIPELINE_SELECT_3D);
+
+   /* Mesa does this. Who knows... */
+   OUT_RING(BRW_CS_URB_STATE | 0);
+   OUT_RING((0 << 4) |	/* URB Entry Allocation Size */
+	    (0 << 0));	/* Number of URB Entries */
+   
+   /* Zero out the two base address registers so all offsets are absolute */
+   OUT_RING(BRW_STATE_BASE_ADDRESS | 4);
+   OUT_RING(0 | BASE_ADDRESS_MODIFY);  /* Generate state base address */
+   OUT_RING(0 | BASE_ADDRESS_MODIFY);  /* Surface state base address */
+   OUT_RING(0 | BASE_ADDRESS_MODIFY);  /* media base addr, don't care */
+   OUT_RING(0x10000000 | BASE_ADDRESS_MODIFY);  /* general state max addr, disabled */
+   OUT_RING(0x10000000 | BASE_ADDRESS_MODIFY);  /* media object state max addr, disabled */
+
+   /* Set system instruction pointer */
+   OUT_RING(BRW_STATE_SIP | 0);
+   OUT_RING(state_base_offset + sip_kernel_offset); /* system instruction pointer */
+      
+   OUT_RING(MI_NOOP);
+   ADVANCE_LP_RING(); }
+   
+/*   brw_debug (pScrn, "after base address modify"); */
+
+   { BEGIN_LP_RING(42);
+   /* Enable VF statistics */
+   OUT_RING(BRW_3DSTATE_VF_STATISTICS | 1);
+   
+   /* Pipe control */
+   OUT_RING(BRW_PIPE_CONTROL |
+	    BRW_PIPE_CONTROL_NOWRITE |
+	    BRW_PIPE_CONTROL_IS_FLUSH |
+	    2);
+   OUT_RING(0);			       /* Destination address */
+   OUT_RING(0);			       /* Immediate data low DW */
+   OUT_RING(0);			       /* Immediate data high DW */
+
+   /* Binding table pointers */
+   OUT_RING(BRW_3DSTATE_BINDING_TABLE_POINTERS | 4);
+   OUT_RING(0); /* vs */
+   OUT_RING(0); /* gs */
+   OUT_RING(0); /* clip */
+   OUT_RING(0); /* sf */
+   /* Only the PS uses the binding table */
+   OUT_RING(state_base_offset + binding_table_offset); /* ps */
+   
+   /* Blend constant color (magenta is fun) */
+   OUT_RING(BRW_3DSTATE_CONSTANT_COLOR | 3);
+   OUT_RING(float_to_uint (1.0));
+   OUT_RING(float_to_uint (0.0));
+   OUT_RING(float_to_uint (1.0));
+   OUT_RING(float_to_uint (1.0));
+   
+   /* The drawing rectangle clipping is always on.  Set it to values that
+    * shouldn't do any clipping.
+    */
+   OUT_RING(BRW_3DSTATE_DRAWING_RECTANGLE | 2);	/* XXX 3 for BLC or CTG */
+   OUT_RING(0x00000000);	/* ymin, xmin */
+   OUT_RING((pScrn->virtualX - 1) |
+	    (pScrn->virtualY - 1) << 16); /* ymax, xmax */
+   OUT_RING(0x00000000);	/* yorigin, xorigin */
+
+   /* skip the depth buffer */
+   /* skip the polygon stipple */
+   /* skip the polygon stipple offset */
+   /* skip the line stipple */
+   
+   /* Set the pointers to the 3d pipeline state */
+   OUT_RING(BRW_3DSTATE_PIPELINED_POINTERS | 5);
+   OUT_RING(state_base_offset + vs_offset);  /* 32 byte aligned */
+   OUT_RING(BRW_GS_DISABLE);		     /* disable GS, resulting in passthrough */
+   OUT_RING(BRW_CLIP_DISABLE);		     /* disable CLIP, resulting in passthrough */
+   OUT_RING(state_base_offset + sf_offset);  /* 32 byte aligned */
+   OUT_RING(state_base_offset + wm_offset);  /* 32 byte aligned */
+   OUT_RING(state_base_offset + cc_offset);  /* 64 byte aligned */
+
+   /* URB fence */
+   OUT_RING(BRW_URB_FENCE |
+	    UF0_CS_REALLOC |
+	    UF0_SF_REALLOC |
+	    UF0_CLIP_REALLOC |
+	    UF0_GS_REALLOC |
+	    UF0_VS_REALLOC |
+	    1);
+   OUT_RING(((urb_clip_start + urb_clip_size) << UF1_CLIP_FENCE_SHIFT) |
+	    ((urb_gs_start + urb_gs_size) << UF1_GS_FENCE_SHIFT) |
+	    ((urb_vs_start + urb_vs_size) << UF1_VS_FENCE_SHIFT));
+   OUT_RING(((urb_cs_start + urb_cs_size) << UF2_CS_FENCE_SHIFT) |
+	    ((urb_sf_start + urb_sf_size) << UF2_SF_FENCE_SHIFT));
+
+   /* Constant buffer state */
+   OUT_RING(BRW_CS_URB_STATE | 0);
+   OUT_RING(((URB_CS_ENTRY_SIZE - 1) << 4) | /* URB Entry Allocation Size */
+	    (URB_CS_ENTRIES << 0));	     /* Number of URB Entries */
+   
+   /* Set up the pointer to our vertex buffer */
+   OUT_RING(BRW_3DSTATE_VERTEX_BUFFERS | 2);
+   OUT_RING((0 << VB0_BUFFER_INDEX_SHIFT) |
+	    VB0_VERTEXDATA |
+	    ((4 * 4) << VB0_BUFFER_PITCH_SHIFT)); /* four 32-bit floats per vertex */
+   OUT_RING(state_base_offset + vb_offset);
+   OUT_RING(3); /* four corners to our rectangle */
+
+   /* Set up our vertex elements, sourced from the single vertex buffer. */
+   OUT_RING(BRW_3DSTATE_VERTEX_ELEMENTS | 3);
+   /* offset 0: X,Y -> {X, Y, 1.0, 1.0} */
+   OUT_RING((0 << VE0_VERTEX_BUFFER_INDEX_SHIFT) |
+	    VE0_VALID |
+	    (BRW_SURFACEFORMAT_R32G32_FLOAT << VE0_FORMAT_SHIFT) |
+	    (0 << VE0_OFFSET_SHIFT));
+   OUT_RING((BRW_VFCOMPONENT_STORE_SRC << VE1_VFCOMPONENT_0_SHIFT) |
+	    (BRW_VFCOMPONENT_STORE_SRC << VE1_VFCOMPONENT_1_SHIFT) |
+	    (BRW_VFCOMPONENT_STORE_1_FLT << VE1_VFCOMPONENT_2_SHIFT) |
+	    (BRW_VFCOMPONENT_STORE_1_FLT << VE1_VFCOMPONENT_3_SHIFT) |
+	    (0 << VE1_DESTINATION_ELEMENT_OFFSET_SHIFT));
+   /* offset 8: S0, T0 -> {S0, T0, 1.0, 1.0} */
+   OUT_RING((0 << VE0_VERTEX_BUFFER_INDEX_SHIFT) |
+	    VE0_VALID |
+	    (BRW_SURFACEFORMAT_R32G32_FLOAT << VE0_FORMAT_SHIFT) |
+	    (8 << VE0_OFFSET_SHIFT));
+   OUT_RING((BRW_VFCOMPONENT_STORE_SRC << VE1_VFCOMPONENT_0_SHIFT) |
+	    (BRW_VFCOMPONENT_STORE_SRC << VE1_VFCOMPONENT_1_SHIFT) |
+	    (BRW_VFCOMPONENT_STORE_1_FLT << VE1_VFCOMPONENT_2_SHIFT) |
+	    (BRW_VFCOMPONENT_STORE_1_FLT << VE1_VFCOMPONENT_3_SHIFT) |
+	    (4 << VE1_DESTINATION_ELEMENT_OFFSET_SHIFT));
+
+   OUT_RING(MI_NOOP);			/* pad to quadword */
+   ADVANCE_LP_RING(); }
+
+   dxo = dstRegion->extents.x1;
+   dyo = dstRegion->extents.y1;
+
+   pbox = REGION_RECTS(dstRegion);
+   nbox = REGION_NUM_RECTS(dstRegion);
+   while (nbox--)
+   {
+      int box_x1 = pbox->x1;
+      int box_y1 = pbox->y1;
+      int box_x2 = pbox->x2;
+      int box_y2 = pbox->y2;
+      int i;
+      float src_scale_x, src_scale_y;
+
+      if (!first_output) {
+	 /* Since we use the same little vertex buffer over and over, sync for
+	  * subsequent rectangles.
+	  */
+	 if (pI830->AccelInfoRec && pI830->AccelInfoRec->NeedToSync) {
+	    (*pI830->AccelInfoRec->Sync)(pScrn);
+	    pI830->AccelInfoRec->NeedToSync = FALSE;
+	 }
+      }
+
+      pbox++;
+
+      /* Use normalized texture coordinates */
+      src_scale_x = (float)1.0 / (float)drw_w;
+      src_scale_y  = (float)1.0 / (float)drw_h;
+
+      i = 0;
+      vb[i++] = (box_x2 - dxo) * src_scale_x;
+      vb[i++] = (box_y2 - dyo) * src_scale_y;
+      vb[i++] = (float) box_x2;
+      vb[i++] = (float) box_y2;
+
+      vb[i++] = (box_x1 - dxo) * src_scale_x;
+      vb[i++] = (box_y2 - dyo) * src_scale_y;
+      vb[i++] = (float) box_x1;
+      vb[i++] = (float) box_y2;
+
+      vb[i++] = (box_x1 - dxo) * src_scale_x;
+      vb[i++] = (box_y1 - dyo) * src_scale_y;
+      vb[i++] = (float) box_x1;
+      vb[i++] = (float) box_y1;
+
+#if 0
+      ErrorF ("before EU_ATT 0x%08x%08x EU_ATT_DATA 0x%08x%08x\n",
+	      INREG(BRW_EU_ATT_1), INREG(BRW_EU_ATT_0),
+	      INREG(BRW_EU_ATT_DATA_1), INREG(BRW_EU_ATT_DATA_0));
+
+      OUTREG(BRW_VF_CTL,
+	     BRW_VF_CTL_SNAPSHOT_MUX_SELECT_THREADID |
+	     BRW_VF_CTL_SNAPSHOT_TYPE_VERTEX_INDEX |
+	     BRW_VF_CTL_SNAPSHOT_ENABLE);
+      OUTREG(BRW_VF_STRG_VAL, 0);
+#endif
+      
+#if 0
+      OUTREG(BRW_VS_CTL,
+	     BRW_VS_CTL_SNAPSHOT_ALL_THREADS |
+	     BRW_VS_CTL_SNAPSHOT_MUX_VALID_COUNT |
+	     BRW_VS_CTL_THREAD_SNAPSHOT_ENABLE);
+      
+      OUTREG(BRW_VS_STRG_VAL, 0);
+#endif
+      
+#if WATCH_SF
+      OUTREG(BRW_SF_CTL,
+	     BRW_SF_CTL_SNAPSHOT_MUX_VERTEX_COUNT |
+	     BRW_SF_CTL_SNAPSHOT_ALL_THREADS |
+	     BRW_SF_CTL_THREAD_SNAPSHOT_ENABLE);
+      OUTREG(BRW_SF_STRG_VAL, 0);
+#endif
+
+#if WATCH_WIZ
+      OUTREG(BRW_WIZ_CTL,
+	     BRW_WIZ_CTL_SNAPSHOT_MUX_SUBSPAN_INSTANCE |
+	     BRW_WIZ_CTL_SNAPSHOT_ALL_THREADS |
+	     BRW_WIZ_CTL_SNAPSHOT_ENABLE);
+      OUTREG(BRW_WIZ_STRG_VAL,
+	     (box_x1) | (box_y1 << 16));
+#endif
+      
+#if 0
+      OUTREG(BRW_TS_CTL,
+	     BRW_TS_CTL_SNAPSHOT_MESSAGE_ERROR |
+	     BRW_TS_CTL_SNAPSHOT_ALL_CHILD_THREADS |
+	     BRW_TS_CTL_SNAPSHOT_ALL_ROOT_THREADS |
+	     BRW_TS_CTL_SNAPSHOT_ENABLE);
+#endif
+
+      BEGIN_LP_RING(6);
+      OUT_RING(BRW_3DPRIMITIVE | 
+	       BRW_3DPRIMITIVE_VERTEX_SEQUENTIAL |
+	       (_3DPRIM_RECTLIST << BRW_3DPRIMITIVE_TOPOLOGY_SHIFT) | 
+	       (0 << 9) |  /* CTG - indirect vertex count */
+	       4);
+      OUT_RING(3); /* vertex count per instance */
+      OUT_RING(0); /* start vertex offset */
+      OUT_RING(1); /* single instance */
+      OUT_RING(0); /* start instance location */
+      OUT_RING(0); /* index buffer offset, ignored */
+      ADVANCE_LP_RING();
+
+#if 0
+      for (j = 0; j < 100000; j++) {
+	ctl = INREG(BRW_VF_CTL);
+	 if (ctl & BRW_VF_CTL_SNAPSHOT_COMPLETE)
+	    break;
+      }
+      
+      rdata = INREG(BRW_VF_RDATA);
+      OUTREG(BRW_VF_CTL, 0);
+      ErrorF ("VF_CTL: 0x%08x VF_RDATA: 0x%08x\n", ctl, rdata);
+#endif
+
+#if 0
+      for (j = 0; j < 1000000; j++) {
+	ctl = INREG(BRW_VS_CTL);
+	 if (ctl & BRW_VS_CTL_SNAPSHOT_COMPLETE)
+	    break;
+      }
+
+      rdata = INREG(BRW_VS_RDATA);
+      for (k = 0; k <= 3; k++) {
+	 OUTREG(BRW_VS_CTL,
+		BRW_VS_CTL_SNAPSHOT_COMPLETE |
+		(k << 8));
+	 rdata = INREG(BRW_VS_RDATA);
+	 ErrorF ("VS_CTL: 0x%08x VS_RDATA(%d): 0x%08x\n", ctl, k, rdata);
+      }
+      
+      OUTREG(BRW_VS_CTL, 0);
+#endif
+
+#if WATCH_SF
+      for (j = 0; j < 1000000; j++) {
+	ctl = INREG(BRW_SF_CTL);
+	 if (ctl & BRW_SF_CTL_SNAPSHOT_COMPLETE)
+	    break;
+      }
+
+      for (k = 0; k <= 7; k++) {
+	 OUTREG(BRW_SF_CTL,
+		BRW_SF_CTL_SNAPSHOT_COMPLETE |
+		(k << 8));
+	 rdata = INREG(BRW_SF_RDATA);
+	 ErrorF ("SF_CTL: 0x%08x SF_RDATA(%d): 0x%08x\n", ctl, k, rdata);
+      }
+      
+      OUTREG(BRW_SF_CTL, 0);
+#endif
+
+#if WATCH_WIZ
+      for (j = 0; j < 100000; j++) {
+	ctl = INREG(BRW_WIZ_CTL);
+	 if (ctl & BRW_WIZ_CTL_SNAPSHOT_COMPLETE)
+	    break;
+      }
+      
+      rdata = INREG(BRW_WIZ_RDATA);
+      OUTREG(BRW_WIZ_CTL, 0);
+      ErrorF ("WIZ_CTL: 0x%08x WIZ_RDATA: 0x%08x\n", ctl, rdata);
+#endif
+      
+#if 0
+      for (j = 0; j < 100000; j++) {
+	ctl = INREG(BRW_TS_CTL);
+	 if (ctl & BRW_TS_CTL_SNAPSHOT_COMPLETE)
+	    break;
+      }
+      
+      rdata = INREG(BRW_TS_RDATA);
+      OUTREG(BRW_TS_CTL, 0);
+      ErrorF ("TS_CTL: 0x%08x TS_RDATA: 0x%08x\n", ctl, rdata);
+      
+      ErrorF ("after EU_ATT 0x%08x%08x EU_ATT_DATA 0x%08x%08x\n",
+	      INREG(BRW_EU_ATT_1), INREG(BRW_EU_ATT_0),
+	      INREG(BRW_EU_ATT_DATA_1), INREG(BRW_EU_ATT_DATA_0));
+#endif
+
+#if 0
+      for (j = 0; j < 256; j++) {
+	 OUTREG(BRW_TD_CTL, j << BRW_TD_CTL_MUX_SHIFT);
+	 rdata = INREG(BRW_TD_RDATA);
+	 ErrorF ("TD_RDATA(%d): 0x%08x\n", j, rdata);
+      }
+#endif
+      first_output = FALSE;
+      if (pI830->AccelInfoRec)
+	 pI830->AccelInfoRec->NeedToSync = TRUE;
+   }
+
+   if (pI830->AccelInfoRec)
+      (*pI830->AccelInfoRec->Sync)(pScrn);
+#if WATCH_STATS
+   i830_dump_error_state (pScrn);
+#endif
+}