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path: root/src/gallium/drivers/i915/i915_state_emit.c
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/**************************************************************************
 * 
 * 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 "i915_reg.h"
#include "i915_context.h"
#include "i915_batch.h"
#include "i915_debug.h"
#include "i915_resource.h"

#include "pipe/p_context.h"
#include "pipe/p_defines.h"

#include "util/u_math.h"
#include "util/u_memory.h"

struct i915_tracked_hw_state {
   const char *name;
   void (*validate)(struct i915_context *);
   void (*emit)(struct i915_context *);
   unsigned dirty;
};


static void
validate_immediate(struct i915_context *i915)
{
   if (i915->immediate_dirty & (1 << I915_IMMEDIATE_S0))
      i915->validation_buffers[i915->num_validation_buffers++] = i915->vbo;
}

static void
validate_static(struct i915_context *i915)
{
   if (i915->current.cbuf_bo)
      i915->validation_buffers[i915->num_validation_buffers++]
         = i915->current.cbuf_bo;

   if (i915->current.depth_bo)
      i915->validation_buffers[i915->num_validation_buffers++]
         = i915->current.depth_bo;
}

static void
validate_map(struct i915_context *i915)
{
   const uint enabled = i915->current.sampler_enable_flags;
   uint unit;
   struct i915_texture *tex;


   for (unit = 0; unit < I915_TEX_UNITS; unit++) {
      if (enabled & (1 << unit)) {
	 tex = i915_texture(i915->fragment_sampler_views[unit]->texture);
	 i915->validation_buffers[i915->num_validation_buffers++] = tex->buffer;
      }
   }
}

const static struct i915_tracked_hw_state hw_atoms[] = {
   { "immediate", validate_immediate, NULL, I915_HW_IMMEDIATE },
   { "static", validate_static, NULL, I915_HW_STATIC },
   { "map", validate_map, NULL, I915_HW_MAP }
};

static boolean
i915_validate_state(struct i915_context *i915)
{
   int i;

   i915->num_validation_buffers = 0;

   for (i = 0; i < Elements(hw_atoms); i++)
      if ((i915->hardware_dirty & hw_atoms[i].dirty) && hw_atoms[i].validate)
	 hw_atoms[i].validate(i915);

   if (i915->num_validation_buffers == 0)
      return TRUE;

   if (!i915_winsys_validate_buffers(i915->batch, i915->validation_buffers,
				     i915->num_validation_buffers))
      return FALSE;

   return TRUE;
}

/* Push the state into the sarea and/or texture memory.
 */
void
i915_emit_hardware_state(struct i915_context *i915 )
{
   /* XXX: there must be an easier way */
   const unsigned dwords = ( 14 + 
                             7 + 
                             I915_MAX_DYNAMIC + 
                             8 + 
                             2 + I915_TEX_UNITS*3 + 
                             2 + I915_TEX_UNITS*3 +
                             2 + I915_MAX_CONSTANT*4 + 
#if 0
                             i915->current.program_len + 
#else
                             i915->fs->program_len + 
#endif
                             6 
                           ) * 3/2; /* plus 50% margin */
   const unsigned relocs = ( I915_TEX_UNITS +
                             3
                           ) * 3/2; /* plus 50% margin */

   uintptr_t save_ptr;
   size_t save_relocs;

   if (I915_DBG_ON(DBG_ATOMS))
      i915_dump_hardware_dirty(i915, __FUNCTION__);

   if (!i915_validate_state(i915)) {
      FLUSH_BATCH(NULL);
      assert(i915_validate_state(i915));
   }

   if(!BEGIN_BATCH(dwords, relocs)) {
      FLUSH_BATCH(NULL);
      assert(i915_validate_state(i915));
      assert(BEGIN_BATCH(dwords, relocs));
   }

   save_ptr = (uintptr_t)i915->batch->ptr;
   save_relocs = i915->batch->relocs;

   /* 14 dwords, 0 relocs */
   if (i915->hardware_dirty & I915_HW_INVARIANT)
   {
      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);

      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);

      OUT_BATCH(_3DSTATE_DEPTH_SUBRECT_DISABLE);

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

   /* 7 dwords, 1 relocs */
   if (i915->hardware_dirty & I915_HW_IMMEDIATE)
   {
      /* remove unwatned bits and S7 */
      unsigned dirty = (1 << I915_IMMEDIATE_S0 | 1 << I915_IMMEDIATE_S1 |
                        1 << I915_IMMEDIATE_S2 | 1 << I915_IMMEDIATE_S3 |
                        1 << I915_IMMEDIATE_S3 | 1 << I915_IMMEDIATE_S4 |
                        1 << I915_IMMEDIATE_S5 | 1 << I915_IMMEDIATE_S6) &
                       i915->immediate_dirty;
      int i, num = util_bitcount(dirty);
      assert(num && num <= I915_MAX_IMMEDIATE);

      OUT_BATCH(_3DSTATE_LOAD_STATE_IMMEDIATE_1 |
                dirty << 4 | (num - 1));

      if (i915->immediate_dirty & (1 << I915_IMMEDIATE_S0)) {
         if (i915->vbo)
            OUT_RELOC(i915->vbo, I915_USAGE_VERTEX,
                      i915->current.immediate[I915_IMMEDIATE_S0]);
         else
            OUT_BATCH(0);
      }

      for (i = 1; i < I915_MAX_IMMEDIATE; i++) {
         if (dirty & (1 << i))
            OUT_BATCH(i915->current.immediate[i]);
      }
   } 

#if 01
   /* I915_MAX_DYNAMIC dwords, 0 relocs */
   if (i915->hardware_dirty & I915_HW_DYNAMIC) 
   {
      int i;
      for (i = 0; i < I915_MAX_DYNAMIC; i++) {
         if (i915->dynamic_dirty & (1 << i))
            OUT_BATCH(i915->current.dynamic[i]);
      }
   }
#endif

#if 01
   /* 8 dwords, 2 relocs */
   if (i915->hardware_dirty & I915_HW_STATIC)
   {
      if (i915->current.cbuf_bo) {
         OUT_BATCH(_3DSTATE_BUF_INFO_CMD);
         OUT_BATCH(i915->current.cbuf_flags);
         OUT_RELOC(i915->current.cbuf_bo,
                   I915_USAGE_RENDER,
                   0);
      }

      /* What happens if no zbuf??
       */
      if (i915->current.depth_bo) {
         OUT_BATCH(_3DSTATE_BUF_INFO_CMD);
         OUT_BATCH(i915->current.depth_flags);
         OUT_RELOC(i915->current.depth_bo,
                   I915_USAGE_RENDER,
                   0);
      }

      {
         OUT_BATCH(_3DSTATE_DST_BUF_VARS_CMD);
         OUT_BATCH(i915->current.dst_buf_vars);
      }
   }
#endif

#if 01
      /* texture images */
      /* 2 + I915_TEX_UNITS*3 dwords, I915_TEX_UNITS relocs */
      if (i915->hardware_dirty & (I915_HW_MAP | I915_HW_SAMPLER))
      {
         const uint nr = i915->current.sampler_enable_nr;
         if (nr) {
            const uint enabled = i915->current.sampler_enable_flags;
            uint unit;
            uint count = 0;
            OUT_BATCH(_3DSTATE_MAP_STATE | (3 * nr));
            OUT_BATCH(enabled);
            for (unit = 0; unit < I915_TEX_UNITS; unit++) {
               if (enabled & (1 << unit)) {
                  struct i915_texture *texture = i915_texture(i915->fragment_sampler_views[unit]->texture);
                  struct i915_winsys_buffer *buf = texture->buffer;
                  assert(buf);

                  count++;

                  OUT_RELOC(buf, I915_USAGE_SAMPLER, 0);
                  OUT_BATCH(i915->current.texbuffer[unit][0]); /* MS3 */
                  OUT_BATCH(i915->current.texbuffer[unit][1]); /* MS4 */
               }
            }
            assert(count == nr);
         }
      }
#endif

#if 01
   /* samplers */
   /* 2 + I915_TEX_UNITS*3 dwords, 0 relocs */
   if (i915->hardware_dirty & I915_HW_SAMPLER) 
   {
      if (i915->current.sampler_enable_nr) {
         int i;

         OUT_BATCH( _3DSTATE_SAMPLER_STATE | 
                    (3 * i915->current.sampler_enable_nr) );

         OUT_BATCH( i915->current.sampler_enable_flags );

         for (i = 0; i < I915_TEX_UNITS; i++) {
            if (i915->current.sampler_enable_flags & (1<<i)) {
               OUT_BATCH( i915->current.sampler[i][0] );
               OUT_BATCH( i915->current.sampler[i][1] );
               OUT_BATCH( i915->current.sampler[i][2] );
            }
         }
      }
   }
#endif

#if 01
   /* constants */
   /* 2 + I915_MAX_CONSTANT*4 dwords, 0 relocs */
   if (i915->hardware_dirty & I915_HW_CONSTANTS)
   {
      /* Collate the user-defined constants with the fragment shader's
       * immediates according to the constant_flags[] array.
       */
      const uint nr = i915->fs->num_constants;
      if (nr) {
         uint i;

         OUT_BATCH( _3DSTATE_PIXEL_SHADER_CONSTANTS | (nr * 4) );
	 OUT_BATCH((1 << nr) - 1);

         for (i = 0; i < nr; i++) {
            const uint *c;
            if (i915->fs->constant_flags[i] == I915_CONSTFLAG_USER) {
               /* grab user-defined constant */
               c = (uint *) i915_buffer(i915->constants[PIPE_SHADER_FRAGMENT])->data;
               c += 4 * i;
            }
            else {
               /* emit program constant */
               c = (uint *) i915->fs->constants[i];
            }
#if 0 /* debug */
            {
               float *f = (float *) c;
               printf("Const %2d: %f %f %f %f %s\n", i, f[0], f[1], f[2], f[3],
                      (i915->fs->constant_flags[i] == I915_CONSTFLAG_USER
                       ? "user" : "immediate"));
            }
#endif
            OUT_BATCH(*c++);
            OUT_BATCH(*c++);
            OUT_BATCH(*c++);
            OUT_BATCH(*c++);
         }
      }
   }
#endif

#if 01
   /* Fragment program */
   /* i915->current.program_len dwords, 0 relocs */
   if (i915->hardware_dirty & I915_HW_PROGRAM)
   {
      uint i;
      /* we should always have, at least, a pass-through program */
      assert(i915->fs->program_len > 0);
      for (i = 0; i < i915->fs->program_len; i++) {
         OUT_BATCH(i915->fs->program[i]);
      }
   }
#endif

#if 01
   /* drawing surface size */
   /* 6 dwords, 0 relocs */
   if (i915->hardware_dirty & I915_HW_STATIC)
   {
      /* XXX flush only required when the draw_offset changes! */
      OUT_BATCH(MI_FLUSH | INHIBIT_FLUSH_RENDER_CACHE);
      OUT_BATCH(_3DSTATE_DRAW_RECT_CMD);
      OUT_BATCH(DRAW_RECT_DIS_DEPTH_OFS);
      OUT_BATCH(i915->current.draw_offset);
      OUT_BATCH(i915->current.draw_size);
      OUT_BATCH(i915->current.draw_offset);
   }
#endif

   I915_DBG(DBG_EMIT, "%s: used %d dwords, %d relocs\n", __FUNCTION__,
            ((uintptr_t)i915->batch->ptr - save_ptr) / 4,
            i915->batch->relocs - save_relocs);

   i915->hardware_dirty = 0;
   i915->immediate_dirty = 0;
   i915->dynamic_dirty = 0;
}