Initial import.

1 files changed, 368 insertions, 0 deletions

diff --git a/src/mesa/tnl/t_vb_program.c b/src/mesa/tnl/t_vb_program.c
new file mode 100644
index 0000000..38b04b4
--- /dev/null
+++ b/src/mesa/tnl/t_vb_program.c
@@ -0,0 +1,368 @@
+/*
+ * Mesa 3-D graphics library
+ * Version:  6.1
+ *
+ * Copyright (C) 1999-2004  Brian Paul   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, 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 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
+ * BRIAN PAUL 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.
+ */
+
+
+/**
+ * \file tnl/t_vb_program.c
+ * \brief Pipeline stage for executing NVIDIA vertex programs.
+ * \author Brian Paul,  Keith Whitwell
+ */
+
+
+#include "glheader.h"
+#include "api_noop.h"
+#include "colormac.h"
+#include "context.h"
+#include "dlist.h"
+#include "hash.h"
+#include "light.h"
+#include "macros.h"
+#include "imports.h"
+#include "simple_list.h"
+#include "mtypes.h"
+#include "nvvertprog.h"
+#include "nvvertexec.h"
+#include "nvprogram.h"
+
+#include "math/m_translate.h"
+
+#include "t_context.h"
+#include "t_pipeline.h"
+
+
+/**
+ * \warning These values _MUST_ match the values in the OutputRegisters[]
+ * array in vpparse.c!!!
+ */
+#define VERT_RESULT_HPOS 0
+#define VERT_RESULT_COL0 1
+#define VERT_RESULT_COL1 2
+#define VERT_RESULT_BFC0 3
+#define VERT_RESULT_BFC1 4
+#define VERT_RESULT_FOGC 5
+#define VERT_RESULT_PSIZ 6
+#define VERT_RESULT_TEX0 7
+#define VERT_RESULT_TEX1 8
+#define VERT_RESULT_TEX2 9
+#define VERT_RESULT_TEX3 10
+#define VERT_RESULT_TEX4 11
+#define VERT_RESULT_TEX5 12
+#define VERT_RESULT_TEX6 13
+#define VERT_RESULT_TEX7 14
+
+
+/*!
+ * Private storage for the vertex program pipeline stage.
+ */
+struct vp_stage_data {
+   /** The results of running the vertex program go into these arrays. */
+   GLvector4f attribs[15];
+
+   GLvector4f ndcCoords;              /**< normalized device coords */
+   GLubyte *clipmask;                 /**< clip flags */
+   GLubyte ormask, andmask;           /**< for clipping */
+};
+
+
+#define VP_STAGE_DATA(stage) ((struct vp_stage_data *)(stage->privatePtr))
+
+
+/**
+ * This function executes vertex programs
+ */
+static GLboolean
+run_vp( GLcontext *ctx, struct tnl_pipeline_stage *stage )
+{
+   TNLcontext *tnl = TNL_CONTEXT(ctx);
+   struct vp_stage_data *store = VP_STAGE_DATA(stage);
+   struct vertex_buffer *VB = &tnl->vb;
+   struct vertex_program *program = ctx->VertexProgram.Current;
+   GLuint i;
+
+   /* load program parameter registers (they're read-only) */
+   _mesa_init_vp_per_primitive_registers(ctx);
+
+   for (i = 0; i < VB->Count; i++) {
+      GLuint attr;
+
+      _mesa_init_vp_per_vertex_registers(ctx);
+
+#if 0
+      printf("Input  %d: %f, %f, %f, %f\n", i,
+             VB->AttribPtr[0]->data[i][0],
+             VB->AttribPtr[0]->data[i][1],
+             VB->AttribPtr[0]->data[i][2],
+             VB->AttribPtr[0]->data[i][3]);
+      printf("   color: %f, %f, %f, %f\n",
+             VB->AttribPtr[3]->data[i][0],
+             VB->AttribPtr[3]->data[i][1],
+             VB->AttribPtr[3]->data[i][2],
+             VB->AttribPtr[3]->data[i][3]);
+      printf("  normal: %f, %f, %f, %f\n",
+             VB->AttribPtr[2]->data[i][0],
+             VB->AttribPtr[2]->data[i][1],
+             VB->AttribPtr[2]->data[i][2],
+             VB->AttribPtr[2]->data[i][3]);
+#endif
+
+      /* the vertex array case */
+      for (attr = 0; attr < VERT_ATTRIB_MAX; attr++) {
+	 if (program->InputsRead & (1 << attr)) {
+	    const GLubyte *ptr = (const GLubyte*) VB->AttribPtr[attr]->data;
+	    const GLuint size = VB->AttribPtr[attr]->size;
+	    const GLuint stride = VB->AttribPtr[attr]->stride;
+	    const GLfloat *data = (GLfloat *) (ptr + stride * i);
+	    ASSIGN_4V(ctx->VertexProgram.Inputs[attr], 0, 0, 0, 1);
+	    COPY_SZ_4V(ctx->VertexProgram.Inputs[attr], size, data);
+	 }
+      }
+
+      /* execute the program */
+      ASSERT(program);
+      _mesa_exec_vertex_program(ctx, program);
+
+      /* Fixup fog an point size results if needed */
+      if (ctx->Fog.Enabled &&
+          (program->OutputsWritten & (1 << VERT_RESULT_FOGC)) == 0) {
+         ctx->VertexProgram.Outputs[VERT_RESULT_FOGC][0] = 1.0;
+      }
+
+      if (ctx->VertexProgram.PointSizeEnabled &&
+          (program->OutputsWritten & (1 << VERT_RESULT_PSIZ)) == 0) {
+         ctx->VertexProgram.Outputs[VERT_RESULT_PSIZ][0] = ctx->Point.Size;
+      }
+
+      /* copy the output registers into the VB->attribs arrays */
+      /* XXX (optimize) could use a conditional and smaller loop limit here */
+      for (attr = 0; attr < 15; attr++) {
+         COPY_4V(store->attribs[attr].data[i],
+                 ctx->VertexProgram.Outputs[attr]);
+      }
+   }
+
+   /* Setup the VB pointers so that the next pipeline stages get
+    * their data from the right place (the program output arrays).
+    */
+   VB->ClipPtr = &store->attribs[VERT_RESULT_HPOS];
+   VB->ClipPtr->size = 4;
+   VB->ClipPtr->count = VB->Count;
+   VB->ColorPtr[0] = &store->attribs[VERT_RESULT_COL0];
+   VB->ColorPtr[1] = &store->attribs[VERT_RESULT_BFC0];
+   VB->SecondaryColorPtr[0] = &store->attribs[VERT_RESULT_COL1];
+   VB->SecondaryColorPtr[1] = &store->attribs[VERT_RESULT_BFC1];
+   VB->FogCoordPtr = &store->attribs[VERT_RESULT_FOGC];
+   VB->PointSizePtr = &store->attribs[VERT_RESULT_PSIZ];
+
+   VB->AttribPtr[VERT_ATTRIB_COLOR0] = VB->ColorPtr[0];
+   VB->AttribPtr[VERT_ATTRIB_COLOR1] = VB->SecondaryColorPtr[0];
+   VB->AttribPtr[VERT_ATTRIB_FOG] = VB->FogCoordPtr;
+   VB->AttribPtr[_TNL_ATTRIB_POINTSIZE] = &store->attribs[VERT_RESULT_PSIZ];
+
+   for (i = 0; i < ctx->Const.MaxTextureUnits; i++) {
+      VB->AttribPtr[VERT_ATTRIB_TEX0+i] = VB->TexCoordPtr[i] = 
+	 &store->attribs[VERT_RESULT_TEX0 + i];
+   }
+
+
+
+   /* Cliptest and perspective divide.  Clip functions must clear
+    * the clipmask.
+    */
+   store->ormask = 0;
+   store->andmask = CLIP_ALL_BITS;
+
+   if (tnl->NeedNdcCoords) {
+      VB->NdcPtr =
+         _mesa_clip_tab[VB->ClipPtr->size]( VB->ClipPtr,
+                                            &store->ndcCoords,
+                                            store->clipmask,
+                                            &store->ormask,
+                                            &store->andmask );
+   }
+   else {
+      VB->NdcPtr = 0;
+      _mesa_clip_np_tab[VB->ClipPtr->size]( VB->ClipPtr,
+                                            0,
+                                            store->clipmask,
+                                            &store->ormask,
+                                            &store->andmask );
+   }
+
+   if (store->andmask)  /* All vertices are outside the frustum */
+      return GL_FALSE;
+
+
+   /* This is where we'd do clip testing against the user-defined
+    * clipping planes, but they're not supported by vertex programs.
+    */
+
+   VB->ClipOrMask = store->ormask;
+   VB->ClipMask = store->clipmask;
+
+   return GL_TRUE;
+}
+
+
+/**
+ * This function validates stuff.
+ */
+static GLboolean run_validate_program( GLcontext *ctx,
+					struct tnl_pipeline_stage *stage )
+{
+#if 000
+   /* XXX do we need any validation for vertex programs? */
+   GLuint ind = 0;
+   light_func *tab;
+
+   if (ctx->Visual.rgbMode) {
+      if (ctx->Light._NeedVertices) {
+	 if (ctx->Light.Model.ColorControl == GL_SEPARATE_SPECULAR_COLOR)
+	    tab = _tnl_light_spec_tab;
+	 else
+	    tab = _tnl_light_tab;
+      }
+      else {
+	 if (ctx->Light.EnabledList.next == ctx->Light.EnabledList.prev)
+	    tab = _tnl_light_fast_single_tab;
+	 else
+	    tab = _tnl_light_fast_tab;
+      }
+   }
+   else
+      tab = _tnl_light_ci_tab;
+
+   if (ctx->Light.ColorMaterialEnabled)
+      ind |= LIGHT_COLORMATERIAL;
+
+   if (ctx->Light.Model.TwoSide)
+      ind |= LIGHT_TWOSIDE;
+
+   VP_STAGE_DATA(stage)->light_func_tab = &tab[ind];
+
+   /* This and the above should only be done on _NEW_LIGHT:
+    */
+   _mesa_validate_all_lighting_tables( ctx );
+#endif
+
+   /* Now run the stage...
+    */
+   stage->run = run_vp;
+   return stage->run( ctx, stage );
+}
+
+
+
+/**
+ * Called the first time stage->run is called.  In effect, don't
+ * allocate data until the first time the stage is run.
+ */
+static GLboolean run_init_vp( GLcontext *ctx,
+                              struct tnl_pipeline_stage *stage )
+{
+   TNLcontext *tnl = TNL_CONTEXT(ctx);
+   struct vertex_buffer *VB = &(tnl->vb);
+   struct vp_stage_data *store;
+   const GLuint size = VB->Size;
+   GLuint i;
+
+   stage->privatePtr = MALLOC(sizeof(*store));
+   store = VP_STAGE_DATA(stage);
+   if (!store)
+      return GL_FALSE;
+
+   /* Allocate arrays of vertex output values */
+   for (i = 0; i < 15; i++) {
+      _mesa_vector4f_alloc( &store->attribs[i], 0, size, 32 );
+      store->attribs[i].size = 4;
+   }
+
+   /* a few other misc allocations */
+   _mesa_vector4f_alloc( &store->ndcCoords, 0, size, 32 );
+   store->clipmask = (GLubyte *) ALIGN_MALLOC(sizeof(GLubyte)*size, 32 );
+
+   /* Now validate the stage derived data...
+    */
+   stage->run = run_validate_program;
+   return stage->run( ctx, stage );
+}
+
+
+
+/**
+ * Check if vertex program mode is enabled. 
+ * If so, configure the pipeline stage's type, inputs, and outputs.
+ */
+static void check_vp( GLcontext *ctx, struct tnl_pipeline_stage *stage )
+{
+   stage->active = ctx->VertexProgram._Enabled;
+
+   if (stage->active) {
+      /* Set stage->inputs equal to the bitmask of vertex attributes
+       * which the program needs for inputs.
+       */
+      stage->inputs = ctx->VertexProgram.Current->InputsRead;
+   }
+}
+
+
+/**
+ * Destructor for this pipeline stage.
+ */
+static void dtr( struct tnl_pipeline_stage *stage )
+{
+   struct vp_stage_data *store = VP_STAGE_DATA(stage);
+
+   if (store) {
+      GLuint i;
+
+      /* free the vertex program result arrays */
+      for (i = 0; i < 15; i++)
+         _mesa_vector4f_free( &store->attribs[i] );
+
+      /* free misc arrays */
+      _mesa_vector4f_free( &store->ndcCoords );
+      ALIGN_FREE( store->clipmask );
+
+      FREE( store );
+      stage->privatePtr = 0;
+   }
+}
+
+/**
+ * Public description of this pipeline stage.
+ */
+const struct tnl_pipeline_stage _tnl_vertex_program_stage =
+{
+   "vertex-program",
+   _NEW_ALL,	/*XXX FIX */	/* recheck */
+   _NEW_ALL,	/*XXX FIX */    /* recalc */
+   GL_FALSE,			/* active */
+   0,				/* inputs - calculated on the fly */
+   _TNL_BITS_PROG_ANY,		/* outputs -- could calculate */
+   0,				/* changed_inputs */
+   NULL,			/* private_data */
+   dtr,				/* destroy */
+   check_vp,			/* check */
+   run_init_vp			/* run -- initially set to ctr */
+};