Beispiel #1
0
bool
intel_winsys_can_submit_bo(struct intel_winsys *winsys,
                           struct intel_bo **bo_array,
                           int count)
{
   return !drm_intel_bufmgr_check_aperture_space((drm_intel_bo **) bo_array,
                                                 count);
}
Beispiel #2
0
/**
 * Used to initialize the alpha value of an ARGB8888 miptree after copying
 * into it from an XRGB8888 source.
 *
 * This is very common with glCopyTexImage2D().  Note that the coordinates are
 * relative to the start of the miptree, not relative to a slice within the
 * miptree.
 */
static void
intel_miptree_set_alpha_to_one(struct brw_context *brw,
                              struct intel_mipmap_tree *mt,
                              int x, int y, int width, int height)
{
   uint32_t BR13, CMD;
   int pitch, cpp;
   drm_intel_bo *aper_array[2];

   pitch = mt->pitch;
   cpp = mt->cpp;

   DBG("%s dst:buf(%p)/%d %d,%d sz:%dx%d\n",
       __FUNCTION__, mt->bo, pitch, x, y, width, height);

   BR13 = br13_for_cpp(cpp) | 0xf0 << 16;
   CMD = XY_COLOR_BLT_CMD;
   CMD |= XY_BLT_WRITE_ALPHA;

   if (mt->tiling != I915_TILING_NONE) {
      CMD |= XY_DST_TILED;
      pitch /= 4;
   }
   BR13 |= pitch;

   /* do space check before going any further */
   aper_array[0] = brw->batch.bo;
   aper_array[1] = mt->bo;

   if (drm_intel_bufmgr_check_aperture_space(aper_array,
					     ARRAY_SIZE(aper_array)) != 0) {
      intel_batchbuffer_flush(brw);
   }

   unsigned length = brw->gen >= 8 ? 7 : 6;
   bool dst_y_tiled = mt->tiling == I915_TILING_Y;

   BEGIN_BATCH_BLT_TILED(length, dst_y_tiled, false);
   OUT_BATCH(CMD | (length - 2));
   OUT_BATCH(BR13);
   OUT_BATCH(SET_FIELD(y, BLT_Y) | SET_FIELD(x, BLT_X));
   OUT_BATCH(SET_FIELD(y + height, BLT_Y) | SET_FIELD(x + width, BLT_X));
   if (brw->gen >= 8) {
      OUT_RELOC64(mt->bo,
                  I915_GEM_DOMAIN_RENDER, I915_GEM_DOMAIN_RENDER,
                  0);
   } else {
      OUT_RELOC(mt->bo,
                I915_GEM_DOMAIN_RENDER, I915_GEM_DOMAIN_RENDER,
                0);
   }
   OUT_BATCH(0xffffffff); /* white, but only alpha gets written */
   ADVANCE_BATCH_TILED(dst_y_tiled, false);

   intel_batchbuffer_emit_mi_flush(brw);
}
Beispiel #3
0
/**
 * Used to initialize the alpha value of an ARGB8888 miptree after copying
 * into it from an XRGB8888 source.
 *
 * This is very common with glCopyTexImage2D().  Note that the coordinates are
 * relative to the start of the miptree, not relative to a slice within the
 * miptree.
 */
static void
intel_miptree_set_alpha_to_one(struct brw_context *brw,
                              struct intel_mipmap_tree *mt,
                              int x, int y, int width, int height)
{
   struct intel_region *region = mt->region;
   uint32_t BR13, CMD;
   int pitch, cpp;
   drm_intel_bo *aper_array[2];

   pitch = region->pitch;
   cpp = region->cpp;

   DBG("%s dst:buf(%p)/%d %d,%d sz:%dx%d\n",
       __FUNCTION__, region->bo, pitch, x, y, width, height);

   BR13 = br13_for_cpp(cpp) | 0xf0 << 16;
   CMD = XY_COLOR_BLT_CMD;
   CMD |= XY_BLT_WRITE_ALPHA;

   if (region->tiling != I915_TILING_NONE) {
      CMD |= XY_DST_TILED;
      pitch /= 4;
   }
   BR13 |= pitch;

   /* do space check before going any further */
   aper_array[0] = brw->batch.bo;
   aper_array[1] = region->bo;

   if (drm_intel_bufmgr_check_aperture_space(aper_array,
					     ARRAY_SIZE(aper_array)) != 0) {
      intel_batchbuffer_flush(brw);
   }

   bool dst_y_tiled = region->tiling == I915_TILING_Y;

   BEGIN_BATCH_BLT_TILED(6, dst_y_tiled, false);
   OUT_BATCH(CMD | (6 - 2));
   OUT_BATCH(BR13);
   OUT_BATCH((y << 16) | x);
   OUT_BATCH(((y + height) << 16) | (x + width));
   OUT_RELOC_FENCED(region->bo,
		    I915_GEM_DOMAIN_RENDER, I915_GEM_DOMAIN_RENDER,
		    0);
   OUT_BATCH(0xffffffff); /* white, but only alpha gets written */
   ADVANCE_BATCH_TILED(dst_y_tiled, false);

   intel_batchbuffer_emit_mi_flush(brw);
}
Beispiel #4
0
Bool
intel_get_aperture_space(ScrnInfoPtr scrn, drm_intel_bo ** bo_table,
			 int num_bos)
{
	intel_screen_private *intel = intel_get_screen_private(scrn);

	if (intel->batch_bo == NULL) {
		intel_debug_fallback(scrn, "VT inactive\n");
		return FALSE;
	}

	bo_table[0] = intel->batch_bo;
	if (drm_intel_bufmgr_check_aperture_space(bo_table, num_bos) != 0) {
		intel_batch_submit(scrn);
		bo_table[0] = intel->batch_bo;
		if (drm_intel_bufmgr_check_aperture_space(bo_table, num_bos) !=
		    0) {
			intel_debug_fallback(scrn, "Couldn't get aperture "
					    "space for BOs\n");
			return FALSE;
		}
	}
	return TRUE;
}
Beispiel #5
0
/**
 * Used to initialize the alpha value of an ARGB8888 miptree after copying
 * into it from an XRGB8888 source.
 *
 * This is very common with glCopyTexImage2D().  Note that the coordinates are
 * relative to the start of the miptree, not relative to a slice within the
 * miptree.
 */
static void
intel_miptree_set_alpha_to_one(struct intel_context *intel,
                              struct intel_mipmap_tree *mt,
                              int x, int y, int width, int height)
{
   struct intel_region *region = mt->region;
   uint32_t BR13, CMD;
   int pitch, cpp;
   drm_intel_bo *aper_array[2];
   BATCH_LOCALS;

   pitch = region->pitch;
   cpp = region->cpp;

   DBG("%s dst:buf(%p)/%d %d,%d sz:%dx%d\n",
       __func__, region->bo, pitch, x, y, width, height);

   BR13 = br13_for_cpp(cpp) | 0xf0 << 16;
   CMD = XY_COLOR_BLT_CMD;
   CMD |= XY_BLT_WRITE_ALPHA;

   BR13 |= pitch;

   /* do space check before going any further */
   aper_array[0] = intel->batch.bo;
   aper_array[1] = region->bo;

   if (drm_intel_bufmgr_check_aperture_space(aper_array,
					     ARRAY_SIZE(aper_array)) != 0) {
      intel_batchbuffer_flush(intel);
   }

   BEGIN_BATCH(6);
   OUT_BATCH(CMD | (6 - 2));
   OUT_BATCH(BR13);
   OUT_BATCH((y << 16) | x);
   OUT_BATCH(((y + height) << 16) | (x + width));
   OUT_RELOC_FENCED(region->bo,
		    I915_GEM_DOMAIN_RENDER, I915_GEM_DOMAIN_RENDER,
		    0);
   OUT_BATCH(0xffffffff); /* white, but only alpha gets written */
   ADVANCE_BATCH();

   intel_batchbuffer_emit_mi_flush(intel);
}
Beispiel #6
0
/**
 * Use blitting to clear the renderbuffers named by 'flags'.
 * Note: we can't use the ctx->DrawBuffer->_ColorDrawBufferIndexes field
 * since that might include software renderbuffers or renderbuffers
 * which we're clearing with triangles.
 * \param mask  bitmask of BUFFER_BIT_* values indicating buffers to clear
 */
GLbitfield
intelClearWithBlit(struct gl_context *ctx, GLbitfield mask)
{
   struct intel_context *intel = intel_context(ctx);
   struct gl_framebuffer *fb = ctx->DrawBuffer;
   GLuint clear_depth_value, clear_depth_mask;
   GLint cx, cy, cw, ch;
   GLbitfield fail_mask = 0;
   BATCH_LOCALS;

   /* Note: we don't use this function on Gen7+ hardware, so we can safely
    * ignore fast color clear issues.
    */
   assert(intel->gen < 7);

   /*
    * Compute values for clearing the buffers.
    */
   clear_depth_value = 0;
   clear_depth_mask = 0;
   if (mask & BUFFER_BIT_DEPTH) {
      clear_depth_value = (GLuint) (fb->_DepthMax * ctx->Depth.Clear);
      clear_depth_mask = XY_BLT_WRITE_RGB;
   }
   if (mask & BUFFER_BIT_STENCIL) {
      clear_depth_value |= (ctx->Stencil.Clear & 0xff) << 24;
      clear_depth_mask |= XY_BLT_WRITE_ALPHA;
   }

   cx = fb->_Xmin;
   if (_mesa_is_winsys_fbo(fb))
      cy = ctx->DrawBuffer->Height - fb->_Ymax;
   else
      cy = fb->_Ymin;
   cw = fb->_Xmax - fb->_Xmin;
   ch = fb->_Ymax - fb->_Ymin;

   if (cw == 0 || ch == 0)
      return 0;

   /* Loop over all renderbuffers */
   mask &= (1 << BUFFER_COUNT) - 1;
   while (mask) {
      GLuint buf = ffs(mask) - 1;
      bool is_depth_stencil = buf == BUFFER_DEPTH || buf == BUFFER_STENCIL;
      struct intel_renderbuffer *irb;
      int x1, y1, x2, y2;
      uint32_t clear_val;
      uint32_t BR13, CMD;
      struct intel_region *region;
      int pitch, cpp;
      drm_intel_bo *aper_array[2];

      mask &= ~(1 << buf);

      irb = intel_get_renderbuffer(fb, buf);
      if (irb && irb->mt) {
	 region = irb->mt->region;
	 assert(region);
	 assert(region->bo);
      } else {
         fail_mask |= 1 << buf;
         continue;
      }

      /* OK, clear this renderbuffer */
      x1 = cx + irb->draw_x;
      y1 = cy + irb->draw_y;
      x2 = cx + cw + irb->draw_x;
      y2 = cy + ch + irb->draw_y;

      pitch = region->pitch;
      cpp = region->cpp;

      DBG("%s dst:buf(%p)/%d %d,%d sz:%dx%d\n",
	  __FUNCTION__,
	  region->bo, pitch,
	  x1, y1, x2 - x1, y2 - y1);

      BR13 = 0xf0 << 16;
      CMD = XY_COLOR_BLT_CMD;

      /* Setup the blit command */
      if (cpp == 4) {
	 if (is_depth_stencil) {
	    CMD |= clear_depth_mask;
	 } else {
	    /* clearing RGBA */
	    CMD |= XY_BLT_WRITE_ALPHA | XY_BLT_WRITE_RGB;
	 }
      }

      assert(region->tiling != I915_TILING_Y);

      BR13 |= pitch;

      if (is_depth_stencil) {
	 clear_val = clear_depth_value;
      } else {
	 uint8_t clear[4];
	 GLfloat *color = ctx->Color.ClearColor.f;

	 _mesa_unclamped_float_rgba_to_ubyte(clear, color);

	 switch (intel_rb_format(irb)) {
	 case MESA_FORMAT_ARGB8888:
	 case MESA_FORMAT_XRGB8888:
	    clear_val = PACK_COLOR_8888(clear[3], clear[0],
					clear[1], clear[2]);
	    break;
	 case MESA_FORMAT_RGB565:
	    clear_val = PACK_COLOR_565(clear[0], clear[1], clear[2]);
	    break;
	 case MESA_FORMAT_ARGB4444:
	    clear_val = PACK_COLOR_4444(clear[3], clear[0],
					clear[1], clear[2]);
	    break;
	 case MESA_FORMAT_ARGB1555:
	    clear_val = PACK_COLOR_1555(clear[3], clear[0],
					clear[1], clear[2]);
	    break;
	 case MESA_FORMAT_A8:
	    clear_val = PACK_COLOR_8888(clear[3], clear[3],
					clear[3], clear[3]);
	    break;
	 default:
	    fail_mask |= 1 << buf;
	    continue;
	 }
      }

      BR13 |= br13_for_cpp(cpp);

      assert(x1 < x2);
      assert(y1 < y2);

      /* do space check before going any further */
      aper_array[0] = intel->batch.bo;
      aper_array[1] = region->bo;

      if (drm_intel_bufmgr_check_aperture_space(aper_array,
						ARRAY_SIZE(aper_array)) != 0) {
	 intel_batchbuffer_flush(intel);
      }

      BEGIN_BATCH(6);
      OUT_BATCH(CMD | (6 - 2));
      OUT_BATCH(BR13);
      OUT_BATCH((y1 << 16) | x1);
      OUT_BATCH((y2 << 16) | x2);
      OUT_RELOC_FENCED(region->bo,
		       I915_GEM_DOMAIN_RENDER, I915_GEM_DOMAIN_RENDER,
		       0);
      OUT_BATCH(clear_val);
      ADVANCE_BATCH();

      if (intel->always_flush_cache)
	 intel_batchbuffer_emit_mi_flush(intel);

      if (buf == BUFFER_DEPTH || buf == BUFFER_STENCIL)
	 mask &= ~(BUFFER_BIT_DEPTH | BUFFER_BIT_STENCIL);
   }

   return fail_mask;
}
static void intel_blit(struct gralloc_drm_drv_t *drv,
		struct gralloc_drm_bo_t *dst,
		struct gralloc_drm_bo_t *src,
		uint16_t dst_x1, uint16_t dst_y1,
		uint16_t dst_x2, uint16_t dst_y2,
		uint16_t src_x1, uint16_t src_y1,
		uint16_t src_x2, uint16_t src_y2)
{
	struct intel_info *info = (struct intel_info *) drv;
	struct intel_buffer *dst_ib = (struct intel_buffer *) dst;
	struct intel_buffer *src_ib = (struct intel_buffer *) src;
	drm_intel_bo *bo_table[3];
	uint32_t cmd, br13, dst_pitch, src_pitch;

	/*
	 * XY_SRC_COPY_BLT_CMD does not support scaling,
	 * rectangle dimensions much match
	 */
	if (src_x2 - src_x1 != dst_x2 - dst_x1 ||
		src_y2 - src_y1 != dst_y2 - dst_y1) {
		ALOGE("%s, src and dst rect must match", __func__);
		return;
	}

	if (dst->handle->format != src->handle->format) {
		ALOGE("%s, src and dst format must match", __func__);
		return;
	}

	/* nothing to blit */
	if (src_x2 <= src_x1 || src_y2 <= src_y1)
		return;

	/* clamp x2, y2 to surface size */
	if (src_x2 > src->handle->width)
		src_x2 = src->handle->width;
	if (src_y2 > src->handle->height)
		src_y2 = src->handle->height;

	if (dst_x2 > dst->handle->width)
		dst_x2 = dst->handle->width;
	if (dst_y2 > dst->handle->height)
		dst_y2 = dst->handle->height;

	bo_table[0] = info->batch_ibo;
	bo_table[1] = src_ib->ibo;
	bo_table[2] = dst_ib->ibo;
	if (drm_intel_bufmgr_check_aperture_space(bo_table, 3)) {
		if (batch_flush(info))
			return;
		assert(!drm_intel_bufmgr_check_aperture_space(bo_table, 3));
	}

	cmd = XY_SRC_COPY_BLT_CMD;
	br13 = 0xcc << 16; /* ROP_S/GXcopy */
	dst_pitch = dst->handle->stride;
	src_pitch = src->handle->stride;

	/* Blit pitch must be dword-aligned.  Otherwise, the hardware appears to
	 * drop the low bits.
	 */
	if (src_pitch % 4 != 0 || dst_pitch % 4 != 0) {
		ALOGE("%s, src and dst pitch must be dword aligned", __func__);
		return;
	}

	switch (gralloc_drm_get_bpp(dst->handle->format)) {
	case 1:
		break;
	case 2:
		br13 |= (1 << 24);
		break;
	case 4:
		br13 |= (1 << 24) | (1 << 25);
		cmd |= XY_SRC_COPY_BLT_WRITE_ALPHA | XY_SRC_COPY_BLT_WRITE_RGB;
		break;
	default:
		ALOGE("%s, copy with unsupported format", __func__);
		return;
	}

	if (info->gen >= 40) {
		if (dst_ib->tiling != I915_TILING_NONE) {
			assert(dst_pitch % 512 == 0);
			dst_pitch >>= 2;
			cmd |= XY_SRC_COPY_BLT_DST_TILED;
		}
		if (src_ib->tiling != I915_TILING_NONE) {
			assert(src_pitch % 512 == 0);
			src_pitch >>= 2;
			cmd |= XY_SRC_COPY_BLT_SRC_TILED;
		}
Beispiel #8
0
/**
 * Used to initialize the alpha value of an ARGB8888 teximage after
 * loading it from an XRGB8888 source.
 *
 * This is very common with glCopyTexImage2D().
 */
void
intel_set_teximage_alpha_to_one(struct gl_context *ctx,
                                struct intel_texture_image *intel_image)
{
    struct intel_context *intel = intel_context(ctx);
    unsigned int image_x, image_y;
    uint32_t x1, y1, x2, y2;
    uint32_t BR13, CMD;
    int pitch, cpp;
    drm_intel_bo *aper_array[2];
    struct intel_region *region = intel_image->mt->region;
    BATCH_LOCALS;

    assert(intel_image->base.TexFormat == MESA_FORMAT_ARGB8888);

    /* get dest x/y in destination texture */
    intel_miptree_get_image_offset(intel_image->mt,
                                   intel_image->level,
                                   intel_image->face,
                                   0,
                                   &image_x, &image_y);

    x1 = image_x;
    y1 = image_y;
    x2 = image_x + intel_image->base.Width;
    y2 = image_y + intel_image->base.Height;

    pitch = region->pitch;
    cpp = region->cpp;

    DBG("%s dst:buf(%p)/%d %d,%d sz:%dx%d\n",
        __FUNCTION__,
        intel_image->mt->region->buffer, (pitch * cpp),
        x1, y1, x2 - x1, y2 - y1);

    BR13 = br13_for_cpp(cpp) | 0xf0 << 16;
    CMD = XY_COLOR_BLT_CMD;
    CMD |= XY_BLT_WRITE_ALPHA;

    assert(region->tiling != I915_TILING_Y);

#ifndef I915
    if (region->tiling != I915_TILING_NONE) {
        CMD |= XY_DST_TILED;
        pitch /= 4;
    }
#endif
    BR13 |= (pitch * cpp);

    /* do space check before going any further */
    aper_array[0] = intel->batch.bo;
    aper_array[1] = region->buffer;

    if (drm_intel_bufmgr_check_aperture_space(aper_array,
            ARRAY_SIZE(aper_array)) != 0) {
        intel_batchbuffer_flush(intel);
    }

    BEGIN_BATCH_BLT(6);
    OUT_BATCH(CMD);
    OUT_BATCH(BR13);
    OUT_BATCH((y1 << 16) | x1);
    OUT_BATCH((y2 << 16) | x2);
    OUT_RELOC_FENCED(region->buffer,
                     I915_GEM_DOMAIN_RENDER, I915_GEM_DOMAIN_RENDER,
                     0);
    OUT_BATCH(0xffffffff); /* white, but only alpha gets written */
    ADVANCE_BATCH();

    intel_batchbuffer_emit_mi_flush(intel);
}
Beispiel #9
0
/**
 * Use blitting to clear the renderbuffers named by 'flags'.
 * Note: we can't use the ctx->DrawBuffer->_ColorDrawBufferIndexes field
 * since that might include software renderbuffers or renderbuffers
 * which we're clearing with triangles.
 * \param mask  bitmask of BUFFER_BIT_* values indicating buffers to clear
 */
GLbitfield
intelClearWithBlit(struct gl_context *ctx, GLbitfield mask)
{
    struct intel_context *intel = intel_context(ctx);
    struct gl_framebuffer *fb = ctx->DrawBuffer;
    GLuint clear_depth_value, clear_depth_mask;
    GLboolean all;
    GLint cx, cy, cw, ch;
    GLbitfield fail_mask = 0;
    BATCH_LOCALS;

    /*
     * Compute values for clearing the buffers.
     */
    clear_depth_value = 0;
    clear_depth_mask = 0;
    if (mask & BUFFER_BIT_DEPTH) {
        clear_depth_value = (GLuint) (fb->_DepthMax * ctx->Depth.Clear);
        clear_depth_mask = XY_BLT_WRITE_RGB;
    }
    if (mask & BUFFER_BIT_STENCIL) {
        clear_depth_value |= (ctx->Stencil.Clear & 0xff) << 24;
        clear_depth_mask |= XY_BLT_WRITE_ALPHA;
    }

    cx = fb->_Xmin;
    if (fb->Name == 0)
        cy = ctx->DrawBuffer->Height - fb->_Ymax;
    else
        cy = fb->_Ymin;
    cw = fb->_Xmax - fb->_Xmin;
    ch = fb->_Ymax - fb->_Ymin;

    if (cw == 0 || ch == 0)
        return 0;

    all = (cw == fb->Width && ch == fb->Height);

    /* Loop over all renderbuffers */
    mask &= (1 << BUFFER_COUNT) - 1;
    while (mask) {
        GLuint buf = _mesa_ffs(mask) - 1;
        GLboolean is_depth_stencil = buf == BUFFER_DEPTH || buf == BUFFER_STENCIL;
        struct intel_renderbuffer *irb;
        drm_intel_bo *write_buffer;
        int x1, y1, x2, y2;
        uint32_t clear_val;
        uint32_t BR13, CMD;
        int pitch, cpp;
        drm_intel_bo *aper_array[2];

        mask &= ~(1 << buf);

        irb = intel_get_renderbuffer(fb, buf);
        if (irb == NULL || irb->region == NULL || irb->region->buffer == NULL) {
            fail_mask |= 1 << buf;
            continue;
        }

        /* OK, clear this renderbuffer */
        write_buffer = intel_region_buffer(intel, irb->region,
                                           all ? INTEL_WRITE_FULL :
                                           INTEL_WRITE_PART);
        x1 = cx + irb->draw_x;
        y1 = cy + irb->draw_y;
        x2 = cx + cw + irb->draw_x;
        y2 = cy + ch + irb->draw_y;

        pitch = irb->region->pitch;
        cpp = irb->region->cpp;

        DBG("%s dst:buf(%p)/%d %d,%d sz:%dx%d\n",
            __FUNCTION__,
            irb->region->buffer, (pitch * cpp),
            x1, y1, x2 - x1, y2 - y1);

        BR13 = 0xf0 << 16;
        CMD = XY_COLOR_BLT_CMD;

        /* Setup the blit command */
        if (cpp == 4) {
            if (is_depth_stencil) {
                CMD |= clear_depth_mask;
            } else {
                /* clearing RGBA */
                CMD |= XY_BLT_WRITE_ALPHA | XY_BLT_WRITE_RGB;
            }
        }

        assert(irb->region->tiling != I915_TILING_Y);

#ifndef I915
        if (irb->region->tiling != I915_TILING_NONE) {
            CMD |= XY_DST_TILED;
            pitch /= 4;
        }
#endif
        BR13 |= (pitch * cpp);

        if (is_depth_stencil) {
            clear_val = clear_depth_value;
        } else {
            uint8_t clear[4];
            GLclampf *color = ctx->Color.ClearColor;

            CLAMPED_FLOAT_TO_UBYTE(clear[0], color[0]);
            CLAMPED_FLOAT_TO_UBYTE(clear[1], color[1]);
            CLAMPED_FLOAT_TO_UBYTE(clear[2], color[2]);
            CLAMPED_FLOAT_TO_UBYTE(clear[3], color[3]);

            switch (irb->Base.Format) {
            case MESA_FORMAT_ARGB8888:
            case MESA_FORMAT_XRGB8888:
                clear_val = PACK_COLOR_8888(clear[3], clear[0],
                                            clear[1], clear[2]);
                break;
            case MESA_FORMAT_RGB565:
                clear_val = PACK_COLOR_565(clear[0], clear[1], clear[2]);
                break;
            case MESA_FORMAT_ARGB4444:
                clear_val = PACK_COLOR_4444(clear[3], clear[0],
                                            clear[1], clear[2]);
                break;
            case MESA_FORMAT_ARGB1555:
                clear_val = PACK_COLOR_1555(clear[3], clear[0],
                                            clear[1], clear[2]);
                break;
            case MESA_FORMAT_A8:
                clear_val = PACK_COLOR_8888(clear[3], clear[3],
                                            clear[3], clear[3]);
                break;
            default:
                fail_mask |= 1 << buf;
                continue;
            }
        }

        BR13 |= br13_for_cpp(cpp);

        assert(x1 < x2);
        assert(y1 < y2);

        /* do space check before going any further */
        aper_array[0] = intel->batch.bo;
        aper_array[1] = write_buffer;

        if (drm_intel_bufmgr_check_aperture_space(aper_array,
                ARRAY_SIZE(aper_array)) != 0) {
            intel_batchbuffer_flush(intel);
        }

        BEGIN_BATCH_BLT(6);
        OUT_BATCH(CMD);
        OUT_BATCH(BR13);
        OUT_BATCH((y1 << 16) | x1);
        OUT_BATCH((y2 << 16) | x2);
        OUT_RELOC_FENCED(write_buffer,
                         I915_GEM_DOMAIN_RENDER, I915_GEM_DOMAIN_RENDER,
                         0);
        OUT_BATCH(clear_val);
        ADVANCE_BATCH();

        if (intel->always_flush_cache)
            intel_batchbuffer_emit_mi_flush(intel);

        if (buf == BUFFER_DEPTH || buf == BUFFER_STENCIL)
            mask &= ~(BUFFER_BIT_DEPTH | BUFFER_BIT_STENCIL);
    }

    return fail_mask;
}