i915_vtbl.c

Mesa is an open-source implementation of the OpenGL specification - a system for rendering interacti

/**************************************************************************
 * 
 * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
 * 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 TUNGSTEN GRAPHICS 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.
 * 
 **************************************************************************/



#include "glheader.h"
#include "mtypes.h"
#include "imports.h"
#include "macros.h"
#include "colormac.h"

#include "tnl/t_context.h"
#include "tnl/t_vertex.h"

#include "intel_batchbuffer.h"
#include "intel_tex.h"
#include "intel_regions.h"

#include "i915_reg.h"
#include "i915_context.h"

#include "glapi.h"

static void
i915_render_prevalidate(struct intel_context *intel)
{
   struct i915_context *i915 = i915_context(&intel->ctx);

   if (!intel->Fallback)
       i915ValidateFragmentProgram(i915);
}

static void
i915_render_start(struct intel_context *intel)
{
}


static void
i915_reduced_primitive_state(struct intel_context *intel, GLenum rprim)
{
   struct i915_context *i915 = i915_context(&intel->ctx);
   GLuint st1 = i915->state.Stipple[I915_STPREG_ST1];

   st1 &= ~ST1_ENABLE;

   switch (rprim) {
   case GL_QUADS: /* from RASTERIZE(GL_QUADS) in t_dd_tritemp.h */
   case GL_TRIANGLES:
      if (intel->ctx.Polygon.StippleFlag && intel->hw_stipple)
         st1 |= ST1_ENABLE;
      break;
   case GL_LINES:
   case GL_POINTS:
   default:
      break;
   }

   i915->intel.reduced_primitive = rprim;

   if (st1 != i915->state.Stipple[I915_STPREG_ST1]) {
      INTEL_FIREVERTICES(intel);

      I915_STATECHANGE(i915, I915_UPLOAD_STIPPLE);
      i915->state.Stipple[I915_STPREG_ST1] = st1;
   }
}


/* Pull apart the vertex format registers and figure out how large a
 * vertex is supposed to be. 
 */
static GLboolean
i915_check_vertex_size(struct intel_context *intel, GLuint expected)
{
   struct i915_context *i915 = i915_context(&intel->ctx);
   int lis2 = i915->current->Ctx[I915_CTXREG_LIS2];
   int lis4 = i915->current->Ctx[I915_CTXREG_LIS4];
   int i, sz = 0;

   switch (lis4 & S4_VFMT_XYZW_MASK) {
   case S4_VFMT_XY:
      sz = 2;
      break;
   case S4_VFMT_XYZ:
      sz = 3;
      break;
   case S4_VFMT_XYW:
      sz = 3;
      break;
   case S4_VFMT_XYZW:
      sz = 4;
      break;
   default:
      fprintf(stderr, "no xyzw specified\n");
      return 0;
   }

   if (lis4 & S4_VFMT_SPEC_FOG)
      sz++;
   if (lis4 & S4_VFMT_COLOR)
      sz++;
   if (lis4 & S4_VFMT_DEPTH_OFFSET)
      sz++;
   if (lis4 & S4_VFMT_POINT_WIDTH)
      sz++;
   if (lis4 & S4_VFMT_FOG_PARAM)
      sz++;

   for (i = 0; i < 8; i++) {
      switch (lis2 & S2_TEXCOORD_FMT0_MASK) {
      case TEXCOORDFMT_2D:
         sz += 2;
         break;
      case TEXCOORDFMT_3D:
         sz += 3;
         break;
      case TEXCOORDFMT_4D:
         sz += 4;
         break;
      case TEXCOORDFMT_1D:
         sz += 1;
         break;
      case TEXCOORDFMT_2D_16:
         sz += 1;
         break;
      case TEXCOORDFMT_4D_16:
         sz += 2;
         break;
      case TEXCOORDFMT_NOT_PRESENT:
         break;
      default:
         fprintf(stderr, "bad texcoord fmt %d\n", i);
         return GL_FALSE;
      }
      lis2 >>= S2_TEXCOORD_FMT1_SHIFT;
   }

   if (sz != expected)
      fprintf(stderr, "vertex size mismatch %d/%d\n", sz, expected);

   return sz == expected;
}


static void
i915_emit_invarient_state(struct intel_context *intel)
{
   BATCH_LOCALS;

   BEGIN_BATCH(200, IGNORE_CLIPRECTS);

   OUT_BATCH(_3DSTATE_AA_CMD |
             AA_LINE_ECAAR_WIDTH_ENABLE |
             AA_LINE_ECAAR_WIDTH_1_0 |
             AA_LINE_REGION_WIDTH_ENABLE | AA_LINE_REGION_WIDTH_1_0);

   OUT_BATCH(_3DSTATE_DFLT_DIFFUSE_CMD);
   OUT_BATCH(0);

   OUT_BATCH(_3DSTATE_DFLT_SPEC_CMD);
   OUT_BATCH(0);

   OUT_BATCH(_3DSTATE_DFLT_Z_CMD);
   OUT_BATCH(0);

   /* Don't support texture crossbar yet */
   OUT_BATCH(_3DSTATE_COORD_SET_BINDINGS |
             CSB_TCB(0, 0) |
             CSB_TCB(1, 1) |
             CSB_TCB(2, 2) |
             CSB_TCB(3, 3) |
             CSB_TCB(4, 4) | CSB_TCB(5, 5) | CSB_TCB(6, 6) | CSB_TCB(7, 7));

   OUT_BATCH(_3DSTATE_RASTER_RULES_CMD |
             ENABLE_POINT_RASTER_RULE |
             OGL_POINT_RASTER_RULE |
             ENABLE_LINE_STRIP_PROVOKE_VRTX |
             ENABLE_TRI_FAN_PROVOKE_VRTX |
             LINE_STRIP_PROVOKE_VRTX(1) |
             TRI_FAN_PROVOKE_VRTX(2) | ENABLE_TEXKILL_3D_4D | TEXKILL_4D);

   /* Need to initialize this to zero.
    */
   OUT_BATCH(_3DSTATE_LOAD_STATE_IMMEDIATE_1 | I1_LOAD_S(3) | (0));
   OUT_BATCH(0);

   /* XXX: Use this */
   OUT_BATCH(_3DSTATE_SCISSOR_ENABLE_CMD | DISABLE_SCISSOR_RECT);

   OUT_BATCH(_3DSTATE_SCISSOR_RECT_0_CMD);
   OUT_BATCH(0);
   OUT_BATCH(0);

   OUT_BATCH(_3DSTATE_DEPTH_SUBRECT_DISABLE);

   OUT_BATCH(_3DSTATE_LOAD_INDIRECT | 0);       /* disable indirect state */
   OUT_BATCH(0);


   /* Don't support twosided stencil yet */
   OUT_BATCH(_3DSTATE_BACKFACE_STENCIL_OPS | BFO_ENABLE_STENCIL_TWO_SIDE | 0);
   OUT_BATCH(0);

   ADVANCE_BATCH();
}


#define emit(intel, state, size )		     \
   intel_batchbuffer_data(intel->batch, state, size, IGNORE_CLIPRECTS )

static GLuint
get_dirty(struct i915_hw_state *state)
{
   GLuint dirty;

   /* Workaround the multitex hang - if one texture unit state is
    * modified, emit all texture units.
    */
   dirty = state->active & ~state->emitted;
   if (dirty & I915_UPLOAD_TEX_ALL)
      state->emitted &= ~I915_UPLOAD_TEX_ALL;
   dirty = state->active & ~state->emitted;
   return dirty;
}


static GLuint
get_state_size(struct i915_hw_state *state)
{
   GLuint dirty = get_dirty(state);
   GLuint i;
   GLuint sz = 0;

   if (dirty & I915_UPLOAD_INVARIENT)
      sz += 30 * 4;

   if (dirty & I915_UPLOAD_CTX)
      sz += sizeof(state->Ctx);

   if (dirty & I915_UPLOAD_BUFFERS)
      sz += sizeof(state->Buffer);

   if (dirty & I915_UPLOAD_STIPPLE)
      sz += sizeof(state->Stipple);

   if (dirty & I915_UPLOAD_FOG)
      sz += sizeof(state->Fog);

   if (dirty & I915_UPLOAD_TEX_ALL) {
      int nr = 0;
      for (i = 0; i < I915_TEX_UNITS; i++)
         if (dirty & I915_UPLOAD_TEX(i))
            nr++;

      sz += (2 + nr * 3) * sizeof(GLuint) * 2;
   }

   if (dirty & I915_UPLOAD_CONSTANTS)
      sz += state->ConstantSize * sizeof(GLuint);

   if (dirty & I915_UPLOAD_PROGRAM)
      sz += state->ProgramSize * sizeof(GLuint);

   return sz;
}

/* Push the state into the sarea and/or texture memory.
 */
static void
i915_emit_state(struct intel_context *intel)
{
   struct i915_context *i915 = i915_context(&intel->ctx);
   struct i915_hw_state *state = i915->current;
   int i;
   int ret, count;
   GLuint dirty;
   GET_CURRENT_CONTEXT(ctx);
   BATCH_LOCALS;

   /* We don't hold the lock at this point, so want to make sure that
    * there won't be a buffer wrap between the state emits and the primitive
    * emit header.
    *
    * It might be better to talk about explicit places where
    * scheduling is allowed, rather than assume that it is whenever a
    * batchbuffer fills up.
    *
    * Set the space as LOOP_CLIPRECTS now, since that's what our primitives
    * will be emitted under.
    */
   intel_batchbuffer_require_space(intel->batch, get_state_size(state) + 8,
				   LOOP_CLIPRECTS);