C++ OUT_RELOC函数代码示例

static void brw_emit_index_buffer(struct brw_context *brw)
{
   struct intel_context *intel = &brw->intel;
   const struct _mesa_index_buffer *index_buffer = brw->ib.ib;

   if (index_buffer == NULL)
      return;

   BEGIN_BATCH(3);
   OUT_BATCH(CMD_INDEX_BUFFER << 16 |
             /* cut index enable << 10 */
             get_index_type(index_buffer->type) << 8 |
             1);
   OUT_RELOC(brw->ib.bo,
             I915_GEM_DOMAIN_VERTEX, 0,
             0);
   OUT_RELOC(brw->ib.bo,
             I915_GEM_DOMAIN_VERTEX, 0,
	     brw->ib.bo->size - 1);
   ADVANCE_BATCH();
}

static void
occlusion_pause(struct fd_acc_query *aq, struct fd_batch *batch)
{
	struct fd_ringbuffer *ring = batch->draw;

	OUT_PKT7(ring, CP_MEM_WRITE, 4);
	OUT_RELOCW(ring, query_sample(aq, stop));
	OUT_RING(ring, 0xffffffff);
	OUT_RING(ring, 0xffffffff);

	OUT_PKT7(ring, CP_WAIT_MEM_WRITES, 0);

	OUT_PKT4(ring, REG_A5XX_RB_SAMPLE_COUNT_CONTROL, 1);
	OUT_RING(ring, A5XX_RB_SAMPLE_COUNT_CONTROL_COPY);

	OUT_PKT4(ring, REG_A5XX_RB_SAMPLE_COUNT_ADDR_LO, 2);
	OUT_RELOCW(ring, query_sample(aq, stop));

	OUT_PKT7(ring, CP_EVENT_WRITE, 1);
	OUT_RING(ring, ZPASS_DONE);
	fd_reset_wfi(batch);

	OUT_PKT7(ring, CP_WAIT_REG_MEM, 6);
	OUT_RING(ring, 0x00000014);   // XXX
	OUT_RELOC(ring, query_sample(aq, stop));
	OUT_RING(ring, 0xffffffff);
	OUT_RING(ring, 0xffffffff);
	OUT_RING(ring, 0x00000010);   // XXX

	/* result += stop - start: */
	OUT_PKT7(ring, CP_MEM_TO_MEM, 9);
	OUT_RING(ring, CP_MEM_TO_MEM_0_DOUBLE |
			CP_MEM_TO_MEM_0_NEG_C);
	OUT_RELOCW(ring, query_sample(aq, result));     /* dst */
	OUT_RELOC(ring, query_sample(aq, result));      /* srcA */
	OUT_RELOC(ring, query_sample(aq, stop));        /* srcB */
	OUT_RELOC(ring, query_sample(aq, start));       /* srcC */

	fd5_context(batch->ctx)->samples_passed_queries--;
}

/**
 * Emit a VERTEX_BUFFER_STATE entry (part of 3DSTATE_VERTEX_BUFFERS).
 */
static void
emit_vertex_buffer_state(struct brw_context *brw,
                         unsigned buffer_nr,
                         drm_intel_bo *bo,
                         unsigned bo_ending_address,
                         unsigned bo_offset,
                         unsigned stride,
                         unsigned step_rate)
{
   struct gl_context *ctx = &brw->ctx;
   uint32_t dw0;

   if (brw->gen >= 6) {
      dw0 = (buffer_nr << GEN6_VB0_INDEX_SHIFT) |
            (step_rate ? GEN6_VB0_ACCESS_INSTANCEDATA
                       : GEN6_VB0_ACCESS_VERTEXDATA);
   } else {
      dw0 = (buffer_nr << BRW_VB0_INDEX_SHIFT) |
            (step_rate ? BRW_VB0_ACCESS_INSTANCEDATA
                       : BRW_VB0_ACCESS_VERTEXDATA);
   }

   if (brw->gen >= 7)
      dw0 |= GEN7_VB0_ADDRESS_MODIFYENABLE;

   if (brw->gen == 7)
      dw0 |= GEN7_MOCS_L3 << 16;

   WARN_ONCE(stride >= (brw->gen >= 5 ? 2048 : 2047),
             "VBO stride %d too large, bad rendering may occur\n",
             stride);
   OUT_BATCH(dw0 | (stride << BRW_VB0_PITCH_SHIFT));
   OUT_RELOC(bo, I915_GEM_DOMAIN_VERTEX, 0, bo_offset);
   if (brw->gen >= 5) {
      OUT_RELOC(bo, I915_GEM_DOMAIN_VERTEX, 0, bo_ending_address);
   } else {
      OUT_BATCH(0);
   }
   OUT_BATCH(step_rate);
}

/**********************************************************************
 * Upload pointers to the per-stage state.
 *
 * The state pointers in this packet are all relative to the general state
 * base address set by CMD_STATE_BASE_ADDRESS, which is 0.
 */
static int upload_pipelined_state_pointers(struct brw_context *brw )
{
   BEGIN_BATCH(7, IGNORE_CLIPRECTS);
   OUT_BATCH(CMD_PIPELINED_STATE_POINTERS << 16 | (7 - 2));
   OUT_RELOC(brw->vs.state_bo, 
	     BRW_USAGE_STATE,
	     0);
   if (brw->gs.prog_active)
      OUT_RELOC(brw->gs.state_bo, 
		BRW_USAGE_STATE,
		1);
   else
      OUT_BATCH(0);
   OUT_RELOC(brw->clip.state_bo, 
	     BRW_USAGE_STATE,
	     1);
   OUT_RELOC(brw->sf.state_bo,
	     BRW_USAGE_STATE,
	     0);
   OUT_RELOC(brw->wm.state_bo,
	     BRW_USAGE_STATE,
	     0);
   OUT_RELOC(brw->cc.state_bo,
	     BRW_USAGE_STATE,
	     0);
   ADVANCE_BATCH();

   brw->state.dirty.brw |= BRW_NEW_PSP;
   return 0;
}

/**
 * Upload pointers to the per-stage state.
 *
 * The state pointers in this packet are all relative to the general state
 * base address set by CMD_STATE_BASE_ADDRESS, which is 0.
 */
static void upload_pipelined_state_pointers(struct brw_context *brw )
{
   struct intel_context *intel = &brw->intel;

   if (intel->gen == 5) {
      /* Need to flush before changing clip max threads for errata. */
      BEGIN_BATCH(1);
      OUT_BATCH(MI_FLUSH);
      ADVANCE_BATCH();
   }

   BEGIN_BATCH(7);
   OUT_BATCH(_3DSTATE_PIPELINED_POINTERS << 16 | (7 - 2));
   OUT_RELOC(intel->batch.bo, I915_GEM_DOMAIN_INSTRUCTION, 0,
	     brw->vs.state_offset);
   if (brw->gs.prog_active)
      OUT_RELOC(brw->intel.batch.bo, I915_GEM_DOMAIN_INSTRUCTION, 0,
		brw->gs.state_offset | 1);
   else
      OUT_BATCH(0);
   OUT_RELOC(brw->intel.batch.bo, I915_GEM_DOMAIN_INSTRUCTION, 0,
	     brw->clip.state_offset | 1);
   OUT_RELOC(brw->intel.batch.bo, I915_GEM_DOMAIN_INSTRUCTION, 0,
	     brw->sf.state_offset);
   OUT_RELOC(brw->intel.batch.bo, I915_GEM_DOMAIN_INSTRUCTION, 0,
	     brw->wm.state_offset);
   OUT_RELOC(brw->intel.batch.bo, I915_GEM_DOMAIN_INSTRUCTION, 0,
	     brw->cc.state_offset);
   ADVANCE_BATCH();

   brw->state.dirty.brw |= BRW_NEW_PSP;
}

static void
gen9_emit_state_base_address(struct intel_batchbuffer *batch)
{
	OUT_BATCH(GEN8_STATE_BASE_ADDRESS | (19 - 2));

	/* general */
	OUT_BATCH(0 | BASE_ADDRESS_MODIFY);
	OUT_BATCH(0);

	/* stateless data port */
	OUT_BATCH(0 | BASE_ADDRESS_MODIFY);

	/* surface */
	OUT_RELOC(batch->bo, I915_GEM_DOMAIN_SAMPLER, 0, BASE_ADDRESS_MODIFY);

	/* dynamic */
	OUT_RELOC(batch->bo, I915_GEM_DOMAIN_RENDER | I915_GEM_DOMAIN_INSTRUCTION,
		0, BASE_ADDRESS_MODIFY);

	/* indirect */
	OUT_BATCH(0);
	OUT_BATCH(0);

	/* instruction */
	OUT_RELOC(batch->bo, I915_GEM_DOMAIN_INSTRUCTION, 0, BASE_ADDRESS_MODIFY);

	/* general state buffer size */
	OUT_BATCH(0xfffff000 | 1);
	/* dynamic state buffer size */
	OUT_BATCH(1 << 12 | 1);
	/* indirect object buffer size */
	OUT_BATCH(0xfffff000 | 1);
	/* intruction buffer size, must set modify enable bit, otherwise it may result in GPU hang */
	OUT_BATCH(1 << 12 | 1);

	/* Bindless surface state base address */
	OUT_BATCH(0 | BASE_ADDRESS_MODIFY);
	OUT_BATCH(0);
	OUT_BATCH(0xfffff000);
}

void
intelEmitFillBlit(struct intel_context *intel,
		  GLuint cpp,
		  GLshort dst_pitch,
		  dri_bo *dst_buffer,
		  GLuint dst_offset,
		  GLboolean dst_tiled,
		  GLshort x, GLshort y,
		  GLshort w, GLshort h,
		  GLuint color)
{
   GLuint BR13, CMD;
   BATCH_LOCALS;

   dst_pitch *= cpp;

   switch (cpp) {
   case 1:
   case 2:
   case 3:
      BR13 = (0xF0 << 16) | (1 << 24);
      CMD = XY_COLOR_BLT_CMD;
      break;
   case 4:
      BR13 = (0xF0 << 16) | (1 << 24) | (1 << 25);
      CMD = XY_COLOR_BLT_CMD | XY_BLT_WRITE_ALPHA | XY_BLT_WRITE_RGB;
      break;
   default:
      return;
   }
#ifndef I915
   if (dst_tiled) {
      CMD |= XY_DST_TILED;
      dst_pitch /= 4;
   }
#endif

   DBG("%s dst:buf(%p)/%d+%d %d,%d sz:%dx%d\n",
       __FUNCTION__, dst_buffer, dst_pitch, dst_offset, x, y, w, h);

   assert(w > 0);
   assert(h > 0);

   BEGIN_BATCH(6, NO_LOOP_CLIPRECTS);
   OUT_BATCH(CMD);
   OUT_BATCH(BR13 | dst_pitch);
   OUT_BATCH((y << 16) | x);
   OUT_BATCH(((y + h) << 16) | (x + w));
   OUT_RELOC(dst_buffer, DRM_BO_FLAG_MEM_TT | DRM_BO_FLAG_WRITE, dst_offset);
   OUT_BATCH(color);
   ADVANCE_BATCH();
}

/**
 * Upload the binding table pointers, which point each stage's array of surface
 * state pointers.
 *
 * The binding table pointers are relative to the surface state base address,
 * which is 0.
 */
static void upload_binding_table_pointers(struct brw_context *brw)
{
   struct intel_context *intel = &brw->intel;

   BEGIN_BATCH(6, IGNORE_CLIPRECTS);
   OUT_BATCH(CMD_BINDING_TABLE_PTRS << 16 | (6 - 2));
   OUT_BATCH(0); /* vs */
   OUT_BATCH(0); /* gs */
   OUT_BATCH(0); /* clip */
   OUT_BATCH(0); /* sf */
   OUT_RELOC(brw->wm.bind_bo, DRM_BO_FLAG_MEM_TT | DRM_BO_FLAG_READ, 0);
   ADVANCE_BATCH();
}

static void
gen6_emit_state_base_address(struct intel_batchbuffer *batch)
{
	OUT_BATCH(GEN6_STATE_BASE_ADDRESS | (10 - 2));
	OUT_BATCH(0); /* general */
	OUT_RELOC(batch->bo, /* surface */
		  I915_GEM_DOMAIN_INSTRUCTION, 0,
		  BASE_ADDRESS_MODIFY);
	OUT_RELOC(batch->bo, /* instruction */
		  I915_GEM_DOMAIN_INSTRUCTION, 0,
		  BASE_ADDRESS_MODIFY);
	OUT_BATCH(0); /* indirect */
	OUT_RELOC(batch->bo, /* dynamic */
		  I915_GEM_DOMAIN_INSTRUCTION, 0,
		  BASE_ADDRESS_MODIFY);

	/* upper bounds, disable */
	OUT_BATCH(0);
	OUT_BATCH(BASE_ADDRESS_MODIFY);
	OUT_BATCH(0);
	OUT_BATCH(BASE_ADDRESS_MODIFY);
}

static void
draw_emit(struct fd_batch *batch, struct fd_ringbuffer *ring,
		  enum pc_di_primtype primtype,
		  enum pc_di_vis_cull_mode vismode,
		  const struct pipe_draw_info *info,
		  unsigned index_offset)
{
	if (info->index_size) {
		assert(!info->has_user_indices);

		struct pipe_resource *idx_buffer = info->index.resource;
		uint32_t idx_size = info->index_size * info->count;
		uint32_t idx_offset = index_offset + info->start * info->index_size;

		/* leave vis mode blank for now, it will be patched up when
		 * we know if we are binning or not
		 */
		uint32_t draw = CP_DRAW_INDX_OFFSET_0_PRIM_TYPE(primtype) |
			CP_DRAW_INDX_OFFSET_0_SOURCE_SELECT(DI_SRC_SEL_DMA) |
			CP_DRAW_INDX_OFFSET_0_INDEX_SIZE(fd4_size2indextype(info->index_size)) |
			0x2000;

		OUT_PKT7(ring, CP_DRAW_INDX_OFFSET, 7);
		if (vismode == USE_VISIBILITY) {
			OUT_RINGP(ring, draw, &batch->draw_patches);
		} else {
			OUT_RING(ring, draw);
		}
		OUT_RING(ring, info->instance_count);    /* NumInstances */
		OUT_RING(ring, info->count);             /* NumIndices */
		OUT_RING(ring, 0x0);           /* XXX */
		OUT_RELOC(ring, fd_resource(idx_buffer)->bo, idx_offset, 0, 0);
		OUT_RING (ring, idx_size);
	} else {
		/* leave vis mode blank for now, it will be patched up when
		 * we know if we are binning or not
		 */
		uint32_t draw = CP_DRAW_INDX_OFFSET_0_PRIM_TYPE(primtype) |
			CP_DRAW_INDX_OFFSET_0_SOURCE_SELECT(DI_SRC_SEL_AUTO_INDEX) |
			0x2000;

		OUT_PKT7(ring, CP_DRAW_INDX_OFFSET, 3);
		if (vismode == USE_VISIBILITY) {
			OUT_RINGP(ring, draw, &batch->draw_patches);
		} else {
			OUT_RING(ring, draw);
		}
		OUT_RING(ring, info->instance_count);    /* NumInstances */
		OUT_RING(ring, info->count);             /* NumIndices */
	}
}

void
next_ring(void)
{
	int idx = ring_idx++ % ARRAY_SIZE(rings);

	if (rings[idx]) {
		ring = rings[idx];
		fd_ringbuffer_reset(ring);
		return;
	}

	ring = rings[idx] = fd_ringbuffer_new(pipe, 0x5000);

	memcpy(ring->start, initial_state, STATE_SIZE * sizeof(uint32_t));
	ring->cur = &ring->start[120];
	OUT_RELOC (ring, context_bos[0]);
	ring->cur = &ring->start[122];
	OUT_RELOC (ring, context_bos[1]);
	ring->cur = &ring->start[124];
	OUT_RELOC (ring, context_bos[2]);

	fd_ringbuffer_reset(ring);
}

static void
timestamp_pause(struct fd_acc_query *aq, struct fd_batch *batch)
{
	struct fd_ringbuffer *ring = batch->draw;

	OUT_PKT7(ring, CP_EVENT_WRITE, 4);
	OUT_RING(ring, CP_EVENT_WRITE_0_EVENT(CACHE_FLUSH_AND_INV_EVENT) |
			CP_EVENT_WRITE_0_TIMESTAMP);
	OUT_RELOCW(ring, query_sample(aq, stop));
	OUT_RING(ring, 0x00000000);

	fd_reset_wfi(batch);
	fd_wfi(batch, ring);

	/* result += stop - start: */
	OUT_PKT7(ring, CP_MEM_TO_MEM, 9);
	OUT_RING(ring, CP_MEM_TO_MEM_0_DOUBLE |
			CP_MEM_TO_MEM_0_NEG_C);
	OUT_RELOCW(ring, query_sample(aq, result));     /* dst */
	OUT_RELOC(ring, query_sample(aq, result));      /* srcA */
	OUT_RELOC(ring, query_sample(aq, stop));        /* srcB */
	OUT_RELOC(ring, query_sample(aq, start));       /* srcC */
}

void
fd_emit_vertex_bufs(struct fd_ringbuffer *ring, uint32_t val,
		struct fd_vertex_buf *vbufs, uint32_t n)
{
	unsigned i;

	OUT_PKT3(ring, CP_SET_CONSTANT, 1 + (2 * n));
	OUT_RING(ring, (0x1 << 16) | (val & 0xffff));
	for (i = 0; i < n; i++) {
		struct fd_resource *rsc = fd_resource(vbufs[i].prsc);
		OUT_RELOC(ring, rsc->bo, vbufs[i].offset, 3);
		OUT_RING (ring, vbufs[i].size);
	}
}

static void
store_dword_loop(int fd)
{
    int i;
    int num_rings = gem_get_num_rings(fd);

    srandom(0xdeadbeef);

    for (i = 0; i < SLOW_QUICK(0x100000, 10); i++) {
        int ring, mindex;
        ring = random() % num_rings + 1;
        mindex = random() % NUM_FD;
        batch = mbatch[mindex];
        if (ring == I915_EXEC_RENDER) {
            BEGIN_BATCH(4, 1);
            OUT_BATCH(MI_COND_BATCH_BUFFER_END | MI_DO_COMPARE);
            OUT_BATCH(0xffffffff); /* compare dword */
            OUT_RELOC(mbuffer[mindex], I915_GEM_DOMAIN_RENDER,
                      I915_GEM_DOMAIN_RENDER, 0);
            OUT_BATCH(MI_NOOP);
            ADVANCE_BATCH();
        } else {
            BEGIN_BATCH(4, 1);
            OUT_BATCH(MI_FLUSH_DW | 1);
            OUT_BATCH(0); /* reserved */
            OUT_RELOC(mbuffer[mindex], I915_GEM_DOMAIN_RENDER,
                      I915_GEM_DOMAIN_RENDER, 0);
            OUT_BATCH(MI_NOOP | (1<<22) | (0xf));
            ADVANCE_BATCH();
        }
        intel_batchbuffer_flush_on_ring(batch, ring);
    }

    drm_intel_bo_map(target_buffer, 0);
    // map to force waiting on rendering
    drm_intel_bo_unmap(target_buffer);
}

static void
do_render(drm_intel_bufmgr *bufmgr, struct intel_batchbuffer *batch,
	  drm_intel_bo *dst_bo, int width, int height)
{
	uint32_t data[width * height];
	drm_intel_bo *src_bo;
	int i;
	static uint32_t seed = 1;

	/* Generate some junk.  Real workloads would be doing a lot more
	 * work to generate the junk.
	 */
	for (i = 0; i < width * height; i++) {
		data[i] = seed++;
	}

	/* Upload the junk. */
	src_bo = drm_intel_bo_alloc(bufmgr, "src", sizeof(data), 4096);
	drm_intel_bo_subdata(src_bo, 0, sizeof(data), data);

	/* Render the junk to the dst. */
	BLIT_COPY_BATCH_START(0);
	OUT_BATCH((3 << 24) | /* 32 bits */
		  (0xcc << 16) | /* copy ROP */
		  (width * 4) /* dst pitch */);
	OUT_BATCH(0); /* dst x1,y1 */
	OUT_BATCH((height << 16) | width); /* dst x2,y2 */
	OUT_RELOC(dst_bo, I915_GEM_DOMAIN_RENDER, I915_GEM_DOMAIN_RENDER, 0);
	OUT_BATCH(0); /* src x1,y1 */
	OUT_BATCH(width * 4); /* src pitch */
	OUT_RELOC(src_bo, I915_GEM_DOMAIN_RENDER, 0, 0);
	ADVANCE_BATCH();

	intel_batchbuffer_flush(batch);

	drm_intel_bo_unreference(src_bo);
}