draw: add stream output decomposition file
[mesa.git] / src / gallium / auxiliary / draw / draw_pt_vcache.c
index 16ffedf580c9b81f5d8a6e2ac3598faaec8bcfcb..914c87a9dc485a38c8d63c4a6a7f51d8431a8b57 100644 (file)
   *   Keith Whitwell <keith@tungstengraphics.com>
   */
 
-#include "pipe/p_util.h"
+#include "util/u_memory.h"
+#include "util/u_prim.h"
 #include "draw/draw_context.h"
 #include "draw/draw_private.h"
-//#include "draw/draw_vbuf.h"
-//#include "draw/draw_vertex.h"
 #include "draw/draw_pt.h"
 
 
-#define CACHE_MAX 32
-#define FETCH_MAX 128
+#define CACHE_MAX 256
+#define FETCH_MAX 256
 #define DRAW_MAX (16*1024)
 
 struct vcache_frontend {
@@ -54,30 +53,31 @@ struct vcache_frontend {
 
    unsigned draw_count;
    unsigned fetch_count;
-   
-   pt_elt_func elt_func;
-   const void *elt_ptr;
+   unsigned fetch_max;
 
    struct draw_pt_middle_end *middle;
+
+   unsigned input_prim;
    unsigned output_prim;
+
+   unsigned middle_prim;
+   unsigned opt;
 };
 
-static void vcache_flush( struct vcache_frontend *vcache )
+static INLINE void
+vcache_flush( struct vcache_frontend *vcache )
 {
-#if 0
-   /* Should always be true if output_prim == input_prim, otherwise
-    * not so much...
-    */
-   unsigned i;
-   for (i = 0; i < vcache->draw_count; i++) {
-      assert( vcache->fetch_elts[vcache->draw_elts[i]] == 
-              vcache->elt_func(vcache->elt_ptr, i) );
+   if (vcache->middle_prim != vcache->output_prim) {
+      vcache->middle_prim = vcache->output_prim;
+      vcache->middle->prepare( vcache->middle,
+                               vcache->input_prim,
+                               vcache->middle_prim,
+                               vcache->opt,
+                               &vcache->fetch_max );
    }
-#endif
 
    if (vcache->draw_count) {
       vcache->middle->run( vcache->middle,
-                           vcache->output_prim,
                            vcache->fetch_elts,
                            vcache->fetch_count,
                            vcache->draw_elts,
@@ -89,7 +89,8 @@ static void vcache_flush( struct vcache_frontend *vcache )
    vcache->draw_count = 0;
 }
 
-static void vcache_check_flush( struct vcache_frontend *vcache )
+static INLINE void 
+vcache_check_flush( struct vcache_frontend *vcache )
 {
    if ( vcache->draw_count + 6 >= DRAW_MAX ||
         vcache->fetch_count + 4 >= FETCH_MAX )
@@ -99,8 +100,10 @@ static void vcache_check_flush( struct vcache_frontend *vcache )
 }
 
 
-static void vcache_elt( struct vcache_frontend *vcache,
-                        unsigned felt )
+static INLINE void 
+vcache_elt( struct vcache_frontend *vcache,
+            unsigned felt,
+            ushort flags )
 {
    unsigned idx = felt % CACHE_MAX;
 
@@ -112,307 +115,405 @@ static void vcache_elt( struct vcache_frontend *vcache,
       vcache->fetch_elts[vcache->fetch_count++] = felt;
    }
 
-   vcache->draw_elts[vcache->draw_count++] = vcache->out[idx];
+   vcache->draw_elts[vcache->draw_count++] = vcache->out[idx] | flags;
 }
+
+
                    
-static void vcache_triangle( struct vcache_frontend *vcache,
-                             unsigned i0,
-                             unsigned i1,
-                             unsigned i2 )
+static INLINE void 
+vcache_triangle( struct vcache_frontend *vcache,
+                 unsigned i0,
+                 unsigned i1,
+                 unsigned i2 )
 {
-   /* TODO: encode edgeflags in draw_elts */
-   vcache_elt(vcache, i0);
-   vcache_elt(vcache, i1);
-   vcache_elt(vcache, i2);
+   vcache_elt(vcache, i0, 0);
+   vcache_elt(vcache, i1, 0);
+   vcache_elt(vcache, i2, 0);
    vcache_check_flush(vcache);
 }
 
-static void vcache_line( struct vcache_frontend *vcache,
-                         boolean reset,
-                         unsigned i0,
-                         unsigned i1 )
+                         
+static INLINE void 
+vcache_triangle_flags( struct vcache_frontend *vcache,
+                       ushort flags,
+                       unsigned i0,
+                       unsigned i1,
+                       unsigned i2 )
 {
-   /* TODO: encode reset-line-stipple in draw_elts */
-   (void) reset;
-   vcache_elt(vcache, i0);
-   vcache_elt(vcache, i1);
+   vcache_elt(vcache, i0, flags);
+   vcache_elt(vcache, i1, 0);
+   vcache_elt(vcache, i2, 0);
+   vcache_check_flush(vcache);
+}
+
+static INLINE void 
+vcache_line( struct vcache_frontend *vcache,
+             unsigned i0,
+             unsigned i1 )
+{
+   vcache_elt(vcache, i0, 0);
+   vcache_elt(vcache, i1, 0);
    vcache_check_flush(vcache);
 }
 
 
-static void vcache_point( struct vcache_frontend *vcache,
-                          unsigned i0 )
+static INLINE void 
+vcache_line_flags( struct vcache_frontend *vcache,
+                   ushort flags,
+                   unsigned i0,
+                   unsigned i1 )
 {
-   vcache_elt(vcache, i0);
+   vcache_elt(vcache, i0, flags);
+   vcache_elt(vcache, i1, 0);
    vcache_check_flush(vcache);
 }
 
-static void vcache_quad( struct vcache_frontend *vcache,
-                         unsigned i0,
-                         unsigned i1,
-                         unsigned i2,
-                         unsigned i3 )
+
+static INLINE void 
+vcache_point( struct vcache_frontend *vcache,
+              unsigned i0 )
 {
-   vcache_triangle( vcache, i0, i1, i3 );
-   vcache_triangle( vcache, i1, i2, i3 );
+   vcache_elt(vcache, i0, 0);
+   vcache_check_flush(vcache);
 }
 
+static INLINE void 
+vcache_quad( struct vcache_frontend *vcache,
+             unsigned i0,
+             unsigned i1,
+             unsigned i2,
+             unsigned i3 )
+{
+   if (vcache->draw->rasterizer->flatshade_first) {
+      /* pass last quad vertex as first triangle vertex */
+      vcache_triangle( vcache, i3, i0, i1 );
+      vcache_triangle( vcache, i3, i1, i2 );
+   }
+   else {
+      /* pass last quad vertex as last triangle vertex */
+      vcache_triangle( vcache, i0, i1, i3 );
+      vcache_triangle( vcache, i1, i2, i3 );
+   }
+}
 
-static unsigned reduced_prim[PIPE_PRIM_POLYGON + 1] = {
-   PIPE_PRIM_POINTS,
-   PIPE_PRIM_LINES,
-   PIPE_PRIM_LINES,
-   PIPE_PRIM_LINES,
-   PIPE_PRIM_TRIANGLES,
-   PIPE_PRIM_TRIANGLES,
-   PIPE_PRIM_TRIANGLES,
-   PIPE_PRIM_TRIANGLES,
-   PIPE_PRIM_TRIANGLES,
-   PIPE_PRIM_TRIANGLES
-};
+static INLINE void 
+vcache_ef_quad( struct vcache_frontend *vcache,
+                unsigned i0,
+                unsigned i1,
+                unsigned i2,
+                unsigned i3 )
+{
+   if (vcache->draw->rasterizer->flatshade_first) {
+      /* pass last quad vertex as first triangle vertex */
+      vcache_triangle_flags( vcache,
+                             ( DRAW_PIPE_RESET_STIPPLE |
+                               DRAW_PIPE_EDGE_FLAG_0 |
+                               DRAW_PIPE_EDGE_FLAG_1 ),
+                             i3, i0, i1 );
+
+      vcache_triangle_flags( vcache,
+                             ( DRAW_PIPE_EDGE_FLAG_1 |
+                               DRAW_PIPE_EDGE_FLAG_2 ),
+                             i3, i1, i2 );
+   }
+   else {
+      /* pass last quad vertex as last triangle vertex */
+      vcache_triangle_flags( vcache,
+                             ( DRAW_PIPE_RESET_STIPPLE |
+                               DRAW_PIPE_EDGE_FLAG_0 |
+                               DRAW_PIPE_EDGE_FLAG_2 ),
+                             i0, i1, i3 );
+
+      vcache_triangle_flags( vcache,
+                             ( DRAW_PIPE_EDGE_FLAG_0 |
+                               DRAW_PIPE_EDGE_FLAG_1 ),
+                             i1, i2, i3 );
+   }
+}
+
+/* At least for now, we're back to using a template include file for
+ * this.  The two paths aren't too different though - it may be
+ * possible to reunify them.
+ */
+#define TRIANGLE(vc,flags,i0,i1,i2) vcache_triangle_flags(vc,flags,i0,i1,i2)
+#define QUAD(vc,i0,i1,i2,i3)        vcache_ef_quad(vc,i0,i1,i2,i3)
+#define LINE(vc,flags,i0,i1)        vcache_line_flags(vc,flags,i0,i1)
+#define POINT(vc,i0)                vcache_point(vc,i0)
+#define FUNC vcache_run_extras
+#include "draw_pt_vcache_tmp.h"
+
+#define TRIANGLE(vc,flags,i0,i1,i2) vcache_triangle(vc,i0,i1,i2)
+#define QUAD(vc,i0,i1,i2,i3)        vcache_quad(vc,i0,i1,i2,i3)
+#define LINE(vc,flags,i0,i1)        vcache_line(vc,i0,i1)
+#define POINT(vc,i0)                vcache_point(vc,i0)
+#define FUNC vcache_run
+#include "draw_pt_vcache_tmp.h"
+
+static INLINE void 
+rebase_uint_elts( const unsigned *src,
+                  unsigned count,
+                  int delta,
+                  ushort *dest )
+{
+   unsigned i;
 
+   for (i = 0; i < count; i++) 
+      dest[i] = (ushort)(src[i] + delta);
+}
 
-static void vcache_run_pv2( struct draw_pt_front_end *frontend, 
-                            unsigned prim,
-                            pt_elt_func get_elt,
-                            const void *elts,
-                            unsigned count )
+static INLINE void 
+rebase_ushort_elts( const ushort *src,
+                    unsigned count,
+                    int delta,
+                                ushort *dest )
 {
-   struct vcache_frontend *vcache = (struct vcache_frontend *)frontend;
    unsigned i;
-   
-   /* These are for validation only:
-    */
-   vcache->elt_func = get_elt;
-   vcache->elt_ptr = elts;
-   vcache->output_prim = reduced_prim[prim];
-
-   switch (prim) {
-   case PIPE_PRIM_POINTS:
-      for (i = 0; i < count; i ++) {
-         vcache_point( vcache,
-                       get_elt(elts, i) );
-      }
-      break;
-
-   case PIPE_PRIM_LINES:
-      for (i = 0; i+1 < count; i += 2) {
-         vcache_line( vcache, 
-                      TRUE,
-                      get_elt(elts, i + 0),
-                      get_elt(elts, i + 1));
-      }
-      break;
-
-   case PIPE_PRIM_LINE_LOOP:  
-      if (count >= 2) {
-         for (i = 1; i < count; i++) {
-            vcache_line( vcache, 
-                         i == 1,       /* XXX: only if vb not split */
-                         get_elt(elts, i - 1),
-                         get_elt(elts, i) );
-         }
 
-         vcache_line( vcache, 
-                      0,
-                      get_elt(elts, count - 1),
-                      get_elt(elts, 0) );
-      }
-      break;
-
-   case PIPE_PRIM_LINE_STRIP:
-      for (i = 1; i < count; i++) {
-         vcache_line( vcache,
-                      i == 1,
-                      get_elt(elts, i - 1),
-                      get_elt(elts, i) );
-      }
-      break;
-
-   case PIPE_PRIM_TRIANGLES:
-      for (i = 0; i+2 < count; i += 3) {
-         vcache_triangle( vcache,
-                          get_elt(elts, i + 0),
-                          get_elt(elts, i + 1),
-                          get_elt(elts, i + 2) );
-      }
-      break;
-
-   case PIPE_PRIM_TRIANGLE_STRIP:
-      for (i = 0; i+2 < count; i++) {
-         if (i & 1) {
-            vcache_triangle( vcache,
-                             get_elt(elts, i + 1),
-                             get_elt(elts, i + 0),
-                             get_elt(elts, i + 2) );
-         }
-         else {
-            vcache_triangle( vcache,
-                             get_elt(elts, i + 0),
-                             get_elt(elts, i + 1),
-                             get_elt(elts, i + 2) );
-         }
-      }
-      break;
-
-   case PIPE_PRIM_TRIANGLE_FAN:
-      for (i = 0; i+2 < count; i++) {
-         vcache_triangle( vcache,
-                          get_elt(elts, 0),
-                          get_elt(elts, i + 1),
-                          get_elt(elts, i + 2) );
-      }
-      break;
+   for (i = 0; i < count; i++) 
+      dest[i] = (ushort)(src[i] + delta);
+}
 
+static INLINE void 
+rebase_ubyte_elts( const ubyte *src,
+                   unsigned count,
+                   int delta,
+                   ushort *dest )
+{
+   unsigned i;
 
-   case PIPE_PRIM_QUADS:
-      for (i = 0; i+3 < count; i += 4) {
-         vcache_quad( vcache,
-                      get_elt(elts, i + 0),
-                      get_elt(elts, i + 1),
-                      get_elt(elts, i + 2),
-                      get_elt(elts, i + 3));
-      }
-      break;
-
-   case PIPE_PRIM_QUAD_STRIP:
-      for (i = 0; i+3 < count; i += 2) {
-         vcache_quad( vcache,
-                      get_elt(elts, i + 2),
-                      get_elt(elts, i + 0),
-                      get_elt(elts, i + 1),
-                      get_elt(elts, i + 3));
-      }
-      break;
-
-   case PIPE_PRIM_POLYGON:
-      for (i = 0; i+2 < count; i++) {
-         vcache_triangle( vcache,
-                          get_elt(elts, i + 1),
-                          get_elt(elts, i + 2),
-                          get_elt(elts, 0));
-      }
-      break;
+   for (i = 0; i < count; i++) 
+      dest[i] = (ushort)(src[i] + delta);
+}
 
-   default:
-      assert(0);
-      break;
-   }
-   
-   vcache_flush( vcache );
+
+
+static INLINE void 
+translate_uint_elts( const unsigned *src,
+                     unsigned count,
+                     ushort *dest )
+{
+   unsigned i;
+
+   for (i = 0; i < count; i++) 
+      dest[i] = (ushort)(src[i]);
 }
 
+static INLINE void 
+translate_ushort_elts( const ushort *src,
+                       unsigned count,
+                       ushort *dest )
+{
+   unsigned i;
 
-static void vcache_run_pv0( struct draw_pt_front_end *frontend, 
-                            unsigned prim,
-                            pt_elt_func get_elt,
-                            const void *elts,
-                            unsigned count )
+   for (i = 0; i < count; i++) 
+      dest[i] = (ushort)(src[i]);
+}
+
+static INLINE void 
+translate_ubyte_elts( const ubyte *src,
+                      unsigned count,
+                      ushort *dest )
 {
-   struct vcache_frontend *vcache = (struct vcache_frontend *)frontend;
    unsigned i;
-   
-   /* These are for validation only:
-    */
-   vcache->elt_func = get_elt;
-   vcache->elt_ptr = elts;
-   vcache->output_prim = reduced_prim[prim];
-
-   switch (prim) {
-   case PIPE_PRIM_POINTS:
-      for (i = 0; i < count; i ++) {
-         vcache_point( vcache,
-                       get_elt(elts, i) );
-      }
-      break;
-
-   case PIPE_PRIM_LINES:
-      for (i = 0; i+1 < count; i += 2) {
-         vcache_line( vcache, 
-                      TRUE,
-                      get_elt(elts, i + 0),
-                      get_elt(elts, i + 1));
-      }
-      break;
-
-   case PIPE_PRIM_LINE_STRIP:
-      for (i = 1; i < count; i++) {
-         vcache_line( vcache,
-                      i == 1,
-                      get_elt(elts, i - 1),
-                      get_elt(elts, i) );
-      }
-      break;
-
-   case PIPE_PRIM_TRIANGLES:
-      for (i = 0; i+2 < count; i += 3) {
-         vcache_triangle( vcache,
-                          get_elt(elts, i + 0),
-                          get_elt(elts, i + 1),
-                          get_elt(elts, i + 2) );
-      }
-      break;
-
-   case PIPE_PRIM_TRIANGLE_STRIP:
-      for (i = 0; i+2 < count; i++) {
-         if (i & 1) {
-            vcache_triangle( vcache,
-                             get_elt(elts, i + 0),
-                             get_elt(elts, i + 2),
-                             get_elt(elts, i + 1) );
-         }
-         else {
-            vcache_triangle( vcache,
-                             get_elt(elts, i + 0),
-                             get_elt(elts, i + 1),
-                             get_elt(elts, i + 2) );
+
+   for (i = 0; i < count; i++) 
+      dest[i] = (ushort)(src[i]);
+}
+
+
+
+
+#if 0
+static INLINE enum pipe_format 
+format_from_get_elt( pt_elt_func get_elt )
+{
+   switch (draw->pt.user.eltSize) {
+   case 1: return PIPE_FORMAT_R8_UNORM;
+   case 2: return PIPE_FORMAT_R16_UNORM;
+   case 4: return PIPE_FORMAT_R32_UNORM;
+   default: return PIPE_FORMAT_NONE;
+   }
+}
+#endif
+
+static INLINE void 
+vcache_check_run( struct draw_pt_front_end *frontend, 
+                  pt_elt_func get_elt,
+                  const void *elts,
+                  int elt_bias,
+                  unsigned draw_count )
+{
+   struct vcache_frontend *vcache = (struct vcache_frontend *)frontend; 
+   struct draw_context *draw = vcache->draw;
+   unsigned min_index = draw->pt.user.min_index;
+   unsigned max_index = draw->pt.user.max_index;
+   unsigned index_size = draw->pt.user.eltSize;
+   unsigned fetch_count = max_index + 1 - min_index;
+   const ushort *transformed_elts;
+   ushort *storage = NULL;
+   boolean ok = FALSE;
+
+
+   if (0) debug_printf("fetch_count %d fetch_max %d draw_count %d\n", fetch_count, 
+                       vcache->fetch_max,
+                       draw_count);
+
+   if (elt_bias + max_index >= DRAW_PIPE_MAX_VERTICES ||
+       fetch_count >= UNDEFINED_VERTEX_ID ||
+       fetch_count > draw_count) {
+      if (0) debug_printf("fail\n");
+      goto fail;
+   }
+
+   if (vcache->middle_prim != vcache->input_prim) {
+      vcache->middle_prim = vcache->input_prim;
+      vcache->middle->prepare( vcache->middle,
+                               vcache->input_prim,
+                               vcache->middle_prim,
+                               vcache->opt,
+                               &vcache->fetch_max );
+   }
+
+
+   assert((elt_bias >= 0 && min_index + elt_bias >= min_index) ||
+          (elt_bias <  0 && min_index + elt_bias <  min_index));
+
+   if (min_index == 0 &&
+       index_size == 2)
+   {
+      transformed_elts = (const ushort *)elts;
+   }
+   else 
+   {
+      storage = MALLOC( draw_count * sizeof(ushort) );
+      if (!storage)
+         goto fail;
+      
+      if (min_index == 0) {
+         switch(index_size) {
+         case 1:
+            translate_ubyte_elts( (const ubyte *)elts,
+                                  draw_count,
+                                  storage );
+            break;
+
+         case 2:
+            translate_ushort_elts( (const ushort *)elts,
+                                   draw_count,
+                                   storage );
+            break;
+
+         case 4:
+            translate_uint_elts( (const uint *)elts,
+                                 draw_count,
+                                 storage );
+            break;
+
+         default:
+            assert(0);
+            FREE(storage);
+            return;
          }
       }
-      break;
-
-   case PIPE_PRIM_TRIANGLE_FAN:
-      for (i = 0; i+2 < count; i++) {
-         vcache_triangle( vcache,
-                          get_elt(elts, i + 1),
-                          get_elt(elts, i + 2),
-                          get_elt(elts, 0) );
+      else {
+         switch(index_size) {
+         case 1:
+            rebase_ubyte_elts( (const ubyte *)elts,
+                                  draw_count,
+                                  0 - (int)min_index,
+                                  storage );
+            break;
+
+         case 2:
+            rebase_ushort_elts( (const ushort *)elts,
+                                   draw_count,
+                                   0 - (int)min_index,
+                                   storage );
+            break;
+
+         case 4:
+            rebase_uint_elts( (const uint *)elts,
+                                 draw_count,
+                                 0 - (int)min_index,
+                                 storage );
+            break;
+
+         default:
+            assert(0);
+            FREE(storage);
+            return;
+         }
       }
-      break;
-
-
-   default:
-      assert(0);
-      break;
+      transformed_elts = storage;
    }
+
+   if (fetch_count < UNDEFINED_VERTEX_ID)
+      ok = vcache->middle->run_linear_elts( vcache->middle,
+                                            min_index + elt_bias, /* start */
+                                            fetch_count,
+                                            transformed_elts,
+                                            draw_count );
    
-   vcache_flush( vcache );
+   FREE(storage);
+
+   if (ok)
+      return;
+
+   debug_printf("failed to execute atomic draw elts for %d/%d, splitting up\n",
+                fetch_count, draw_count);
+
+ fail:
+   vcache_run( frontend, get_elt, elts, elt_bias, draw_count );
 }
 
-static void vcache_prepare( struct draw_pt_front_end *frontend,
-                            struct draw_pt_middle_end *middle )
+
+
+
+static void
+vcache_prepare( struct draw_pt_front_end *frontend,
+                unsigned in_prim,
+                unsigned out_prim,
+                struct draw_pt_middle_end *middle,
+                unsigned opt )
 {
    struct vcache_frontend *vcache = (struct vcache_frontend *)frontend;
 
-   if (vcache->draw->rasterizer->flatshade_first)
-      vcache->base.run = vcache_run_pv0;
+   if (opt & PT_PIPELINE)
+   {
+      vcache->base.run = vcache_run_extras;
+   }
    else
-      vcache->base.run = vcache_run_pv2;
-   
+   {
+      vcache->base.run = vcache_check_run;
+   }
+
+   vcache->input_prim = in_prim;
+   vcache->output_prim = u_reduced_prim(out_prim);
+
    vcache->middle = middle;
-   middle->prepare( middle );
+   vcache->opt = opt;
+
+   /* Have to run prepare here, but try and guess a good prim for
+    * doing so:
+    */
+   vcache->middle_prim = (opt & PT_PIPELINE) ? vcache->output_prim : vcache->input_prim;
+   middle->prepare( middle, vcache->input_prim,
+                    vcache->middle_prim, opt, &vcache->fetch_max );
 }
 
 
 
 
-static void vcache_finish( struct draw_pt_front_end *frontend )
+static void 
+vcache_finish( struct draw_pt_front_end *frontend )
 {
    struct vcache_frontend *vcache = (struct vcache_frontend *)frontend;
    vcache->middle->finish( vcache->middle );
    vcache->middle = NULL;
 }
 
-static void vcache_destroy( struct draw_pt_front_end *frontend )
+static void 
+vcache_destroy( struct draw_pt_front_end *frontend )
 {
    FREE(frontend);
 }
@@ -421,6 +522,8 @@ static void vcache_destroy( struct draw_pt_front_end *frontend )
 struct draw_pt_front_end *draw_pt_vcache( struct draw_context *draw )
 {
    struct vcache_frontend *vcache = CALLOC_STRUCT( vcache_frontend );
+   if (vcache == NULL)
+      return NULL;
  
    vcache->base.prepare = vcache_prepare;
    vcache->base.run     = NULL;