Merge branch 'upstream-gallium-0.1' into nouveau-gallium-0.1

1 files changed, 89 insertions, 111 deletions

diff --git a/src/gallium/auxiliary/draw/draw_vs_exec.c b/src/gallium/auxiliary/draw/draw_vs_exec.c
index 5c88c2e24e..54a2b2ab04 100644
--- a/src/gallium/auxiliary/draw/draw_vs_exec.c
+++ b/src/gallium/auxiliary/draw/draw_vs_exec.c
@@ -40,145 +40,118 @@
 
 #include "tgsi/util/tgsi_parse.h"
 
-#define MAX_TGSI_VERTICES 4
 
+struct exec_vertex_shader {
+   struct draw_vertex_shader base;
+   struct tgsi_exec_machine *machine;
+};
+
+static struct exec_vertex_shader *exec_vertex_shader( struct draw_vertex_shader *vs )
+{
+   return (struct exec_vertex_shader *)vs;
+}
+
+
+/* Not required for run_linear.
+ */
 static void
 vs_exec_prepare( struct draw_vertex_shader *shader,
 		 struct draw_context *draw )
 {
+   struct exec_vertex_shader *evs = exec_vertex_shader(shader);
+
    /* specify the vertex program to interpret/execute */
-   tgsi_exec_machine_bind_shader(&draw->machine,
+   tgsi_exec_machine_bind_shader(evs->machine,
 				 shader->state.tokens,
 				 PIPE_MAX_SAMPLERS,
 				 NULL /*samplers*/ );
 
-   draw_update_vertex_fetch( draw );
 }
 
 
-/**
- * Transform vertices with the current vertex program/shader
- * Up to four vertices can be shaded at a time.
- * \param vbuffer  the input vertex data
- * \param elts  indexes of four input vertices
- * \param count  number of vertices to shade [1..4]
- * \param vOut  array of pointers to four output vertices
+
+
+/* Simplified vertex shader interface for the pt paths.  Given the
+ * complexity of code-generating all the above operations together,
+ * it's time to try doing all the other stuff separately.
  */
-static boolean
-vs_exec_run( struct draw_vertex_shader *shader,
-	     struct draw_context *draw,
-	     const unsigned *elts, 
-	     unsigned count,
-	     void *vOut,
-             unsigned vertex_size)
+static void
+vs_exec_run_linear( struct draw_vertex_shader *shader,
+		    const float (*input)[4],
+		    float (*output)[4],
+		    const float (*constants)[4],
+		    unsigned count,
+		    unsigned input_stride,
+		    unsigned output_stride )
 {
-   struct tgsi_exec_machine *machine = &draw->machine;
+   struct exec_vertex_shader *evs = exec_vertex_shader(shader);
+   struct tgsi_exec_machine *machine = evs->machine;
    unsigned int i, j;
-   unsigned int clipped = 0;
+   unsigned slot;
 
-   ALIGN16_DECL(struct tgsi_exec_vector, inputs, PIPE_MAX_ATTRIBS);
-   ALIGN16_DECL(struct tgsi_exec_vector, outputs, PIPE_MAX_ATTRIBS);
-   const float *scale = draw->viewport.scale;
-   const float *trans = draw->viewport.translate;
-
-   assert(draw->vertex_shader->info.output_semantic_name[0]
-          == TGSI_SEMANTIC_POSITION);
-
-   machine->Consts = (float (*)[4]) draw->user.constants;
-   machine->Inputs = ALIGN16_ASSIGN(inputs);
-   if (draw->rasterizer->bypass_vs) {
-      /* outputs are just the inputs */
-      machine->Outputs = machine->Inputs;
-   }
-   else {
-      machine->Outputs = ALIGN16_ASSIGN(outputs);
-   }
+   machine->Consts = constants;
 
    for (i = 0; i < count; i += MAX_TGSI_VERTICES) {
       unsigned int max_vertices = MIN2(MAX_TGSI_VERTICES, count - i);
-      draw->vertex_fetch.fetch_func( draw, machine, &elts[i], max_vertices );
-
-      if (!draw->rasterizer->bypass_vs) {
-         /* run interpreter */
-         tgsi_exec_machine_run( machine );
-      }
 
-      /* store machine results */
+      /* Swizzle inputs.  
+       */
       for (j = 0; j < max_vertices; j++) {
-         unsigned slot;
-         float x, y, z, w;
-         struct vertex_header *out =
-            draw_header_from_block(vOut, vertex_size, i + j);
-
-         /* Handle attr[0] (position) specially:
-          *
-          * XXX: Computing the clipmask should be done in the vertex
-          * program as a set of DP4 instructions appended to the
-          * user-provided code.
-          */
-         x = out->clip[0] = machine->Outputs[0].xyzw[0].f[j];
-         y = out->clip[1] = machine->Outputs[0].xyzw[1].f[j];
-         z = out->clip[2] = machine->Outputs[0].xyzw[2].f[j];
-         w = out->clip[3] = machine->Outputs[0].xyzw[3].f[j];
-
-         if (!draw->rasterizer->bypass_clipping) {
-            out->clipmask = compute_clipmask(out->clip, draw->plane,
-                                             draw->nr_planes);
-            clipped += out->clipmask;
-
-            /* divide by w */
-            w = 1.0f / w;
-            x *= w;
-            y *= w;
-            z *= w;
+#if 0
+         debug_printf("%d) Input vert:\n", i + j);
+         for (slot = 0; slot < shader->info.num_inputs; slot++) {
+            debug_printf("\t%d: %f %f %f %f\n", slot,
+			 input[slot][0],
+			 input[slot][1],
+			 input[slot][2],
+			 input[slot][3]);
          }
-         else {
-            out->clipmask = 0;
-         }
-         out->edgeflag = 1;
-	 out->vertex_id = UNDEFINED_VERTEX_ID;
-
-         if (!draw->identity_viewport) {
-            /* Viewport mapping */
-            out->data[0][0] = x * scale[0] + trans[0];
-            out->data[0][1] = y * scale[1] + trans[1];
-            out->data[0][2] = z * scale[2] + trans[2];
-            out->data[0][3] = w;
-         }
-         else {
-            out->data[0][0] = x;
-            out->data[0][1] = y;
-            out->data[0][2] = z;
-            out->data[0][3] = w;
+#endif
+
+         for (slot = 0; slot < shader->info.num_inputs; slot++) {
+            machine->Inputs[slot].xyzw[0].f[j] = input[slot][0];
+            machine->Inputs[slot].xyzw[1].f[j] = input[slot][1];
+            machine->Inputs[slot].xyzw[2].f[j] = input[slot][2];
+            machine->Inputs[slot].xyzw[3].f[j] = input[slot][3];
          }
 
-         /* Remaining attributes are packed into sequential post-transform
-          * vertex attrib slots.
-          */
-         for (slot = 1; slot < draw->num_vs_outputs; slot++) {
-            out->data[slot][0] = machine->Outputs[slot].xyzw[0].f[j];
-            out->data[slot][1] = machine->Outputs[slot].xyzw[1].f[j];
-            out->data[slot][2] = machine->Outputs[slot].xyzw[2].f[j];
-            out->data[slot][3] = machine->Outputs[slot].xyzw[3].f[j];
+	 input = (const float (*)[4])((const char *)input + input_stride);
+      } 
+
+      /* run interpreter */
+      tgsi_exec_machine_run( machine );
+
+      /* Unswizzle all output results.  
+       */
+      for (j = 0; j < max_vertices; j++) {
+         for (slot = 0; slot < shader->info.num_outputs; slot++) {
+            output[slot][0] = machine->Outputs[slot].xyzw[0].f[j];
+            output[slot][1] = machine->Outputs[slot].xyzw[1].f[j];
+            output[slot][2] = machine->Outputs[slot].xyzw[2].f[j];
+            output[slot][3] = machine->Outputs[slot].xyzw[3].f[j];
+
          }
 
-#if 0 /*DEBUG*/
-         printf("%d) Post xform vert:\n", i + j);
-         for (slot = 0; slot < draw->num_vs_outputs; slot++) {
-            printf("\t%d: %f %f %f %f\n", slot,
-                   out->data[slot][0],
-                   out->data[slot][1],
-                   out->data[slot][2],
-                   out->data[slot][3]);
+#if 0
+	 debug_printf("%d) Post xform vert:\n", i + j);
+	 for (slot = 0; slot < shader->info.num_outputs; slot++) {
+	    debug_printf("\t%d: %f %f %f %f\n", slot,
+			 output[slot][0],
+			 output[slot][1],
+			 output[slot][2],
+			 output[slot][3]);
          }
 #endif
-      } /* loop over vertices */
+
+	 output = (float (*)[4])((char *)output + output_stride);
+      } 
+
    }
-   return clipped != 0;
 }
 
 
 
+
 static void
 vs_exec_delete( struct draw_vertex_shader *dvs )
 {
@@ -191,17 +164,22 @@ struct draw_vertex_shader *
 draw_create_vs_exec(struct draw_context *draw,
 		    const struct pipe_shader_state *state)
 {
-   struct draw_vertex_shader *vs = CALLOC_STRUCT( draw_vertex_shader );
+   struct exec_vertex_shader *vs = CALLOC_STRUCT( exec_vertex_shader );
    uint nt = tgsi_num_tokens(state->tokens);
 
    if (vs == NULL) 
       return NULL;
 
    /* we make a private copy of the tokens */
-   vs->state.tokens = mem_dup(state->tokens, nt * sizeof(state->tokens[0]));
-   vs->prepare = vs_exec_prepare;
-   vs->run = vs_exec_run;
-   vs->delete = vs_exec_delete;
+   vs->base.state.tokens = mem_dup(state->tokens, nt * sizeof(state->tokens[0]));
+   tgsi_scan_shader(state->tokens, &vs->base.info);
+
+
+   vs->base.prepare = vs_exec_prepare;
+   vs->base.run_linear = vs_exec_run_linear;
+   vs->base.delete = vs_exec_delete;
+   vs->machine = &draw->machine;
+
 
-   return vs;
+   return &vs->base;
 }