#include "intel_fbo.h"
#include "intel_tex.h"
#include "intel_blit.h"
+#ifndef I915
+#include "brw_context.h"
+#endif
#define FILE_DEBUG_FLAG DEBUG_TEXTURE
assert(region);
}
+ /* According to the Ivy Bridge PRM, Vol1 Part4, section 1.2.1.2 (Graphics
+ * Data Size Limitations):
+ *
+ * The BLT engine is capable of transferring very large quantities of
+ * graphics data. Any graphics data read from and written to the
+ * destination is permitted to represent a number of pixels that
+ * occupies up to 65,536 scan lines and up to 32,768 bytes per scan line
+ * at the destination. The maximum number of pixels that may be
+ * represented per scan line’s worth of graphics data depends on the
+ * color depth.
+ *
+ * Furthermore, intelEmitCopyBlit (which is called below) uses a signed
+ * 16-bit integer to represent buffer pitch, so it can only handle buffer
+ * pitches < 32k.
+ *
+ * As a result of these two limitations, we can only use the blitter to do
+ * this copy when the region's pitch is less than 32k.
+ */
+ if (region->pitch >= 32768)
+ return false;
+
if (intelImage->base.Base.TexObject->Target == GL_TEXTURE_1D_ARRAY ||
intelImage->base.Base.TexObject->Target == GL_TEXTURE_2D_ARRAY) {
perf_debug("no support for array textures\n");
}
if (!copy_supported && !copy_supported_with_alpha_override) {
- if (unlikely(INTEL_DEBUG & DEBUG_PERF))
- fprintf(stderr, "%s mismatched formats %s, %s\n",
+ perf_debug("%s mismatched formats %s, %s\n",
__FUNCTION__,
_mesa_get_format_name(intelImage->base.Base.TexFormat),
_mesa_get_format_name(intel_rb_format(irb)));
intel_miptree_get_image_offset(intelImage->mt,
intelImage->base.Base.Level,
intelImage->base.Base.Face,
- 0,
&image_x, &image_y);
/* The blitter can't handle Y-tiled buffers. */
GLint x, GLint y,
GLsizei width, GLsizei height)
{
- if (dims == 3 || !intel_copy_texsubimage(intel_context(ctx),
- intel_texture_image(texImage),
- xoffset, yoffset,
- intel_renderbuffer(rb), x, y, width, height)) {
- fallback_debug("%s - fallback to swrast\n", __FUNCTION__);
- _mesa_meta_CopyTexSubImage(ctx, dims, texImage,
- xoffset, yoffset, zoffset,
- rb, x, y, width, height);
+ struct intel_context *intel = intel_context(ctx);
+ if (dims != 3) {
+#ifndef I915
+ /* Try BLORP first. It can handle almost everything. */
+ if (brw_blorp_copytexsubimage(intel, rb, texImage, x, y,
+ xoffset, yoffset, width, height))
+ return;
+#endif
+
+ /* Next, try the BLT engine. */
+ if (intel_copy_texsubimage(intel,
+ intel_texture_image(texImage),
+ xoffset, yoffset,
+ intel_renderbuffer(rb), x, y, width, height))
+ return;
}
+
+ /* Finally, fall back to meta. This will likely be slow. */
+ perf_debug("%s - fallback to swrast\n", __FUNCTION__);
+ _mesa_meta_CopyTexSubImage(ctx, dims, texImage,
+ xoffset, yoffset, zoffset,
+ rb, x, y, width, height);
}