import Mesa 11.0.6

1 files changed, 573 insertions, 0 deletions

diff --git a/lib/mesa/src/gallium/auxiliary/draw/draw_pt.c b/lib/mesa/src/gallium/auxiliary/draw/draw_pt.c
new file mode 100644
index 000000000..3236e523a
--- /dev/null
+++ b/lib/mesa/src/gallium/auxiliary/draw/draw_pt.c
@@ -0,0 +1,573 @@
+/**************************************************************************
+ * 
+ * Copyright 2007 VMware, Inc.
+ * All Rights Reserved.
+ * 
+ * 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, sub license, 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 NON-INFRINGEMENT.
+ * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS 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:
+  *   Keith Whitwell <keithw@vmware.com>
+  */
+
+#include "draw/draw_context.h"
+#include "draw/draw_gs.h"
+#include "draw/draw_private.h"
+#include "draw/draw_pt.h"
+#include "draw/draw_vbuf.h"
+#include "draw/draw_vs.h"
+#include "tgsi/tgsi_dump.h"
+#include "util/u_math.h"
+#include "util/u_prim.h"
+#include "util/u_format.h"
+#include "util/u_draw.h"
+
+
+DEBUG_GET_ONCE_BOOL_OPTION(draw_fse, "DRAW_FSE", FALSE)
+DEBUG_GET_ONCE_BOOL_OPTION(draw_no_fse, "DRAW_NO_FSE", FALSE)
+
+/* Overall we split things into:
+ *     - frontend -- prepare fetch_elts, draw_elts - eg vsplit
+ *     - middle   -- fetch, shade, cliptest, viewport
+ *     - pipeline -- the prim pipeline: clipping, wide lines, etc 
+ *     - backend  -- the vbuf_render provided by the driver.
+ */
+static boolean
+draw_pt_arrays(struct draw_context *draw,
+               unsigned prim,
+               unsigned start, 
+               unsigned count)
+{
+   struct draw_pt_front_end *frontend = NULL;
+   struct draw_pt_middle_end *middle = NULL;
+   unsigned opt = 0;
+
+   /* Sanitize primitive length:
+    */
+   {
+      unsigned first, incr;
+      draw_pt_split_prim(prim, &first, &incr);
+      count = draw_pt_trim_count(count, first, incr);
+      if (count < first)
+         return TRUE;
+   }
+
+   if (!draw->force_passthrough) {
+      unsigned gs_out_prim = (draw->gs.geometry_shader ? 
+                              draw->gs.geometry_shader->output_primitive :
+                              prim);
+
+      if (!draw->render) {
+         opt |= PT_PIPELINE;
+      }
+
+      if (draw_need_pipeline(draw,
+                             draw->rasterizer,
+                             gs_out_prim)) {
+         opt |= PT_PIPELINE;
+      }
+
+      if ((draw->clip_xy ||
+           draw->clip_z ||
+           draw->clip_user) && !draw->pt.test_fse) {
+         opt |= PT_CLIPTEST;
+      }
+
+      opt |= PT_SHADE;
+   }
+
+   if (draw->pt.middle.llvm) {
+      middle = draw->pt.middle.llvm;
+   } else {
+      if (opt == 0)
+         middle = draw->pt.middle.fetch_emit;
+      else if (opt == PT_SHADE && !draw->pt.no_fse)
+         middle = draw->pt.middle.fetch_shade_emit;
+      else
+         middle = draw->pt.middle.general;
+   }
+
+   frontend = draw->pt.frontend;
+
+   if (frontend ) {
+      if (draw->pt.prim != prim || draw->pt.opt != opt) {
+         /* In certain conditions switching primitives requires us to flush
+          * and validate the different stages. One example is when smooth
+          * lines are active but first drawn with triangles and then with
+          * lines.
+          */
+         draw_do_flush( draw, DRAW_FLUSH_STATE_CHANGE );
+         frontend = NULL;
+      } else if (draw->pt.eltSize != draw->pt.user.eltSize) {
+         /* Flush draw state if eltSize changed.
+          * This could be improved so only the frontend is flushed since it
+          * converts all indices to ushorts and the fetch part of the middle
+          * always prepares both linear and indexed.
+          */
+         frontend->flush( frontend, DRAW_FLUSH_STATE_CHANGE );
+         frontend = NULL;
+      }
+   }
+
+   if (!frontend) {
+      frontend = draw->pt.front.vsplit;
+
+      frontend->prepare( frontend, prim, middle, opt );
+
+      draw->pt.frontend = frontend;
+      draw->pt.eltSize = draw->pt.user.eltSize;
+      draw->pt.prim = prim;
+      draw->pt.opt = opt;
+   }
+
+   if (draw->pt.rebind_parameters) {
+      /* update constants, viewport dims, clip planes, etc */
+      middle->bind_parameters(middle);
+      draw->pt.rebind_parameters = FALSE;
+   }
+
+   frontend->run( frontend, start, count );
+
+   return TRUE;
+}
+
+void draw_pt_flush( struct draw_context *draw, unsigned flags )
+{
+   assert(flags);
+
+   if (draw->pt.frontend) {
+      draw->pt.frontend->flush( draw->pt.frontend, flags );
+
+      /* don't prepare if we only are flushing the backend */
+      if (flags & DRAW_FLUSH_STATE_CHANGE)
+         draw->pt.frontend = NULL;
+   }
+
+   if (flags & DRAW_FLUSH_PARAMETER_CHANGE) {
+      draw->pt.rebind_parameters = TRUE;
+   }
+}
+
+
+
+boolean draw_pt_init( struct draw_context *draw )
+{
+   draw->pt.test_fse = debug_get_option_draw_fse();
+   draw->pt.no_fse = debug_get_option_draw_no_fse();
+
+   draw->pt.front.vsplit = draw_pt_vsplit(draw);
+   if (!draw->pt.front.vsplit)
+      return FALSE;
+
+   draw->pt.middle.fetch_emit = draw_pt_fetch_emit( draw );
+   if (!draw->pt.middle.fetch_emit)
+      return FALSE;
+
+   draw->pt.middle.fetch_shade_emit = draw_pt_middle_fse( draw );
+   if (!draw->pt.middle.fetch_shade_emit)
+      return FALSE;
+
+   draw->pt.middle.general = draw_pt_fetch_pipeline_or_emit( draw );
+   if (!draw->pt.middle.general)
+      return FALSE;
+
+#if HAVE_LLVM
+   if (draw->llvm)
+      draw->pt.middle.llvm = draw_pt_fetch_pipeline_or_emit_llvm( draw );
+#endif
+
+   return TRUE;
+}
+
+
+void draw_pt_destroy( struct draw_context *draw )
+{
+   if (draw->pt.middle.llvm) {
+      draw->pt.middle.llvm->destroy( draw->pt.middle.llvm );
+      draw->pt.middle.llvm = NULL;
+   }
+
+   if (draw->pt.middle.general) {
+      draw->pt.middle.general->destroy( draw->pt.middle.general );
+      draw->pt.middle.general = NULL;
+   }
+
+   if (draw->pt.middle.fetch_emit) {
+      draw->pt.middle.fetch_emit->destroy( draw->pt.middle.fetch_emit );
+      draw->pt.middle.fetch_emit = NULL;
+   }
+
+   if (draw->pt.middle.fetch_shade_emit) {
+      draw->pt.middle.fetch_shade_emit->destroy( draw->pt.middle.fetch_shade_emit );
+      draw->pt.middle.fetch_shade_emit = NULL;
+   }
+
+   if (draw->pt.front.vsplit) {
+      draw->pt.front.vsplit->destroy( draw->pt.front.vsplit );
+      draw->pt.front.vsplit = NULL;
+   }
+}
+
+
+/**
+ * Debug- print the first 'count' vertices.
+ */
+static void
+draw_print_arrays(struct draw_context *draw, uint prim, int start, uint count)
+{
+   uint i;
+
+   debug_printf("Draw arrays(prim = %u, start = %u, count = %u)\n",
+                prim, start, count);
+
+   for (i = 0; i < count; i++) {
+      uint ii = 0;
+      uint j;
+
+      if (draw->pt.user.eltSize) {
+         /* indexed arrays */
+
+         switch (draw->pt.user.eltSize) {
+         case 1:
+            {
+               const ubyte *elem = (const ubyte *) draw->pt.user.elts;
+               ii = elem[start + i];
+            }
+            break;
+         case 2:
+            {
+               const ushort *elem = (const ushort *) draw->pt.user.elts;
+               ii = elem[start + i];
+            }
+            break;
+         case 4:
+            {
+               const uint *elem = (const uint *) draw->pt.user.elts;
+               ii = elem[start + i];
+            }
+            break;
+         default:
+            assert(0);
+            return;
+         }
+         ii += draw->pt.user.eltBias;
+         debug_printf("Element[%u + %u] + %i -> Vertex %u:\n", start, i,
+                      draw->pt.user.eltBias, ii);
+      }
+      else {
+         /* non-indexed arrays */
+         ii = start + i;
+         debug_printf("Vertex %u:\n", ii);
+      }
+
+      for (j = 0; j < draw->pt.nr_vertex_elements; j++) {
+         uint buf = draw->pt.vertex_element[j].vertex_buffer_index;
+         ubyte *ptr = (ubyte *) draw->pt.user.vbuffer[buf].map;
+
+         if (draw->pt.vertex_element[j].instance_divisor) {
+            ii = draw->instance_id / draw->pt.vertex_element[j].instance_divisor;
+         }
+
+         ptr += draw->pt.vertex_buffer[buf].buffer_offset;
+         ptr += draw->pt.vertex_buffer[buf].stride * ii;
+         ptr += draw->pt.vertex_element[j].src_offset;
+
+         debug_printf("  Attr %u: ", j);
+         switch (draw->pt.vertex_element[j].src_format) {
+         case PIPE_FORMAT_R32_FLOAT:
+            {
+               float *v = (float *) ptr;
+               debug_printf("R %f  @ %p\n", v[0], (void *) v);
+            }
+            break;
+         case PIPE_FORMAT_R32G32_FLOAT:
+            {
+               float *v = (float *) ptr;
+               debug_printf("RG %f %f  @ %p\n", v[0], v[1], (void *) v);
+            }
+            break;
+         case PIPE_FORMAT_R32G32B32_FLOAT:
+            {
+               float *v = (float *) ptr;
+               debug_printf("RGB %f %f %f  @ %p\n", v[0], v[1], v[2], (void *) v);
+            }
+            break;
+         case PIPE_FORMAT_R32G32B32A32_FLOAT:
+            {
+               float *v = (float *) ptr;
+               debug_printf("RGBA %f %f %f %f  @ %p\n", v[0], v[1], v[2], v[3],
+                            (void *) v);
+            }
+            break;
+         case PIPE_FORMAT_B8G8R8A8_UNORM:
+            {
+               ubyte *u = (ubyte *) ptr;
+               debug_printf("BGRA %d %d %d %d  @ %p\n", u[0], u[1], u[2], u[3],
+                            (void *) u);
+            }
+            break;
+         case PIPE_FORMAT_A8R8G8B8_UNORM:
+            {
+               ubyte *u = (ubyte *) ptr;
+               debug_printf("ARGB %d %d %d %d  @ %p\n", u[0], u[1], u[2], u[3],
+                            (void *) u);
+            }
+            break;
+         default:
+            debug_printf("other format %s (fix me)\n",
+                     util_format_name(draw->pt.vertex_element[j].src_format));
+         }
+      }
+   }
+}
+
+
+/** Helper code for below */
+#define PRIM_RESTART_LOOP(elements) \
+   do { \
+      for (j = 0; j < count; j++) {               \
+         i = draw_overflow_uadd(start, j, MAX_LOOP_IDX);  \
+         if (i < elt_max && elements[i] == info->restart_index) { \
+            if (cur_count > 0) { \
+               /* draw elts up to prev pos */ \
+               draw_pt_arrays(draw, prim, cur_start, cur_count); \
+            } \
+            /* begin new prim at next elt */ \
+            cur_start = i + 1; \
+            cur_count = 0; \
+         } \
+         else { \
+            cur_count++; \
+         } \
+      } \
+      if (cur_count > 0) { \
+         draw_pt_arrays(draw, prim, cur_start, cur_count); \
+      } \
+   } while (0)
+
+
+/**
+ * For drawing prims with primitive restart enabled.
+ * Scan for restart indexes and draw the runs of elements/vertices between
+ * the restarts.
+ */
+static void
+draw_pt_arrays_restart(struct draw_context *draw,
+                       const struct pipe_draw_info *info)
+{
+   const unsigned prim = info->mode;
+   const unsigned start = info->start;
+   const unsigned count = info->count;
+   const unsigned elt_max = draw->pt.user.eltMax;
+   unsigned i, j, cur_start, cur_count;
+   /* The largest index within a loop using the i variable as the index.
+    * Used for overflow detection */
+   const unsigned MAX_LOOP_IDX = 0xffffffff;
+
+   assert(info->primitive_restart);
+
+   if (draw->pt.user.eltSize) {
+      /* indexed prims (draw_elements) */
+      cur_start = start;
+      cur_count = 0;
+
+      switch (draw->pt.user.eltSize) {
+      case 1:
+         {
+            const ubyte *elt_ub = (const ubyte *) draw->pt.user.elts;
+            PRIM_RESTART_LOOP(elt_ub);
+         }
+         break;
+      case 2:
+         {
+            const ushort *elt_us = (const ushort *) draw->pt.user.elts;
+            PRIM_RESTART_LOOP(elt_us);
+         }
+         break;
+      case 4:
+         {
+            const uint *elt_ui = (const uint *) draw->pt.user.elts;
+            PRIM_RESTART_LOOP(elt_ui);
+         }
+         break;
+      default:
+         assert(0 && "bad eltSize in draw_arrays()");
+      }
+   }
+   else {
+      /* Non-indexed prims (draw_arrays).
+       * Primitive restart should have been handled in the state tracker.
+       */
+      draw_pt_arrays(draw, prim, start, count);
+   }
+}
+
+
+/**
+ * Resolve true values within pipe_draw_info.
+ * If we're rendering from transform feedback/stream output
+ * buffers both the count and max_index need to be computed
+ * from the attached stream output target. 
+ */
+static void
+resolve_draw_info(const struct pipe_draw_info *raw_info,
+                  struct pipe_draw_info *info,
+                  struct pipe_vertex_buffer *vertex_buffer)
+{
+   memcpy(info, raw_info, sizeof(struct pipe_draw_info));
+
+   if (raw_info->count_from_stream_output) {
+      struct draw_so_target *target =
+         (struct draw_so_target *)info->count_from_stream_output;
+      assert(vertex_buffer != NULL);
+      info->count = target->internal_offset / vertex_buffer->stride;
+
+      /* Stream output draw can not be indexed */
+      debug_assert(!info->indexed);
+      info->max_index = info->count - 1;
+   }
+}
+
+/**
+ * Draw vertex arrays.
+ * This is the main entrypoint into the drawing module.  If drawing an indexed
+ * primitive, the draw_set_indexes() function should have already been called
+ * to specify the element/index buffer information.
+ */
+void
+draw_vbo(struct draw_context *draw,
+         const struct pipe_draw_info *info)
+{
+   unsigned instance;
+   unsigned index_limit;
+   unsigned count;
+   unsigned fpstate = util_fpstate_get();
+   struct pipe_draw_info resolved_info;
+
+   /* Make sure that denorms are treated like zeros. This is 
+    * the behavior required by D3D10. OpenGL doesn't care.
+    */
+   util_fpstate_set_denorms_to_zero(fpstate);
+
+   resolve_draw_info(info, &resolved_info, &(draw->pt.vertex_buffer[0]));
+   info = &resolved_info;
+
+   assert(info->instance_count > 0);
+   if (info->indexed)
+      assert(draw->pt.user.elts);
+
+   count = info->count;
+
+   draw->pt.user.eltBias = info->index_bias;
+   draw->pt.user.min_index = info->min_index;
+   draw->pt.user.max_index = info->max_index;
+   draw->pt.user.eltSize = info->indexed ? draw->pt.user.eltSizeIB : 0;
+
+   if (0)
+      debug_printf("draw_vbo(mode=%u start=%u count=%u):\n",
+                   info->mode, info->start, count);
+
+   if (0)
+      tgsi_dump(draw->vs.vertex_shader->state.tokens, 0);
+
+   if (0) {
+      unsigned int i;
+      debug_printf("Elements:\n");
+      for (i = 0; i < draw->pt.nr_vertex_elements; i++) {
+         debug_printf("  %u: src_offset=%u  inst_div=%u   vbuf=%u  format=%s\n",
+                      i,
+                      draw->pt.vertex_element[i].src_offset,
+                      draw->pt.vertex_element[i].instance_divisor,
+                      draw->pt.vertex_element[i].vertex_buffer_index,
+                      util_format_name(draw->pt.vertex_element[i].src_format));
+      }
+      debug_printf("Buffers:\n");
+      for (i = 0; i < draw->pt.nr_vertex_buffers; i++) {
+         debug_printf("  %u: stride=%u offset=%u size=%d ptr=%p\n",
+                      i,
+                      draw->pt.vertex_buffer[i].stride,
+                      draw->pt.vertex_buffer[i].buffer_offset,
+                      (int) draw->pt.user.vbuffer[i].size,
+                      draw->pt.user.vbuffer[i].map);
+      }
+   }
+
+   if (0)
+      draw_print_arrays(draw, info->mode, info->start, MIN2(count, 20));
+
+   index_limit = util_draw_max_index(draw->pt.vertex_buffer,
+                                     draw->pt.vertex_element,
+                                     draw->pt.nr_vertex_elements,
+                                     info);
+#if HAVE_LLVM
+   if (!draw->llvm)
+#endif
+   {
+      if (index_limit == 0) {
+      /* one of the buffers is too small to do any valid drawing */
+         debug_warning("draw: VBO too small to draw anything\n");
+         util_fpstate_set(fpstate);
+         return;
+      }
+   }
+
+   /* If we're collecting stats then make sure we start from scratch */
+   if (draw->collect_statistics) {
+      memset(&draw->statistics, 0, sizeof(draw->statistics));
+   }
+
+   draw->pt.max_index = index_limit - 1;
+   draw->start_index = info->start;
+
+   /*
+    * TODO: We could use draw->pt.max_index to further narrow
+    * the min_index/max_index hints given by the state tracker.
+    */
+
+   for (instance = 0; instance < info->instance_count; instance++) {
+      unsigned instance_idx = instance + info->start_instance;
+      draw->start_instance = info->start_instance;
+      draw->instance_id = instance;
+      /* check for overflow */
+      if (instance_idx < instance ||
+          instance_idx < draw->start_instance) {
+         /* if we overflown just set the instance id to the max */
+         draw->instance_id = 0xffffffff;
+      }
+
+      draw_new_instance(draw);
+
+      if (info->primitive_restart) {
+         draw_pt_arrays_restart(draw, info);
+      }
+      else {
+         draw_pt_arrays(draw, info->mode, info->start, count);
+      }
+   }
+
+   /* If requested emit the pipeline statistics for this run */
+   if (draw->collect_statistics) {
+      draw->render->pipeline_statistics(draw->render, &draw->statistics);
+   }
+   util_fpstate_set(fpstate);
+}