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authorEric Anholt <eric@anholt.net>2010-06-09 13:54:24 -0700
committerEric Anholt <eric@anholt.net>2010-06-09 14:23:46 -0700
commit94731797c671d6e46e3e0c94c1a0cec5071c0ac3 (patch)
tree67535477faefe9441c8188a9aa2a5d0cb788b54e /src/mesa/drivers
parent503eb57a003f51c25687e9cf0ad6f7939a757f1b (diff)
intel: Use the blitter to upload TexSubImage data to busy textures.
This avoids many pipeline stalls in cairo-gl. [ # ] backend test min(s) median(s) stddev. count Before: [ 0] gl firefox-talos-gfx 36.799 36.851 2.34% 3/3 [ 0] gl firefox-talos-svg 33.429 35.360 3.46% 3/3 After: [ 0] gl firefox-talos-gfx 35.895 36.250 0.48% 3/3 [ 0] gl firefox-talos-svg 26.669 29.888 5.34% 3/3 This doesn't avoid all the pipeline stalls because the kernel reports !busy for buffers on the flushing list. That should be fixed in .36.
Diffstat (limited to 'src/mesa/drivers')
-rw-r--r--src/mesa/drivers/dri/intel/intel_tex_subimage.c77
1 files changed, 67 insertions, 10 deletions
diff --git a/src/mesa/drivers/dri/intel/intel_tex_subimage.c b/src/mesa/drivers/dri/intel/intel_tex_subimage.c
index 4f5c26acf2..af205732fd 100644
--- a/src/mesa/drivers/dri/intel/intel_tex_subimage.c
+++ b/src/mesa/drivers/dri/intel/intel_tex_subimage.c
@@ -35,6 +35,8 @@
#include "intel_context.h"
#include "intel_tex.h"
#include "intel_mipmap_tree.h"
+#include "intel_batchbuffer.h"
+#include "intel_blit.h"
#define FILE_DEBUG_FLAG DEBUG_TEXTURE
@@ -54,7 +56,9 @@ intelTexSubimage(GLcontext * ctx,
struct intel_context *intel = intel_context(ctx);
struct intel_texture_image *intelImage = intel_texture_image(texImage);
GLuint dstRowStride = 0;
-
+ drm_intel_bo *temp_bo = NULL, *dst_bo = NULL;
+ unsigned int blit_x = 0, blit_y = 0;
+
DBG("%s target %s level %d offset %d,%d %dx%d\n", __FUNCTION__,
_mesa_lookup_enum_by_nr(target),
level, xoffset, yoffset, width, height);
@@ -77,14 +81,45 @@ intelTexSubimage(GLcontext * ctx,
/* Map buffer if necessary. Need to lock to prevent other contexts
* from uploading the buffer under us.
*/
- if (intelImage->mt)
- texImage->Data = intel_miptree_image_map(intel,
- intelImage->mt,
- intelImage->face,
- intelImage->level,
- &dstRowStride,
- texImage->ImageOffsets);
- else {
+ if (intelImage->mt) {
+ dst_bo = intel_region_buffer(intel, intelImage->mt->region,
+ INTEL_WRITE_PART);
+
+ if (!compressed &&
+ intelImage->mt->region->tiling != I915_TILING_Y &&
+ intel->gen < 6 && target == GL_TEXTURE_2D &&
+ drm_intel_bo_busy(dst_bo))
+ {
+ unsigned long pitch;
+ uint32_t tiling_mode = I915_TILING_NONE;
+ temp_bo = drm_intel_bo_alloc_tiled(intel->bufmgr,
+ "subimage blit bo",
+ width, height,
+ intelImage->mt->cpp,
+ &tiling_mode,
+ &pitch,
+ 0);
+ drm_intel_gem_bo_map_gtt(temp_bo);
+ texImage->Data = temp_bo->virtual;
+ texImage->ImageOffsets[0] = 0;
+ dstRowStride = pitch;
+
+ intel_miptree_get_image_offset(intelImage->mt, level,
+ intelImage->face, 0,
+ &blit_x, &blit_y);
+ blit_x += xoffset;
+ blit_y += yoffset;
+ xoffset = 0;
+ yoffset = 0;
+ } else {
+ texImage->Data = intel_miptree_image_map(intel,
+ intelImage->mt,
+ intelImage->face,
+ intelImage->level,
+ &dstRowStride,
+ texImage->ImageOffsets);
+ }
+ } else {
if (_mesa_is_format_compressed(texImage->TexFormat)) {
dstRowStride =
_mesa_format_row_stride(texImage->TexFormat, width);
@@ -121,11 +156,33 @@ intelTexSubimage(GLcontext * ctx,
format, type, pixels, packing)) {
_mesa_error(ctx, GL_OUT_OF_MEMORY, "intelTexSubImage");
}
+
+ if (temp_bo) {
+ GLboolean ret;
+ unsigned int dst_pitch = intelImage->mt->region->pitch *
+ intelImage->mt->cpp;
+
+ drm_intel_gem_bo_unmap_gtt(temp_bo);
+ texImage->Data = NULL;
+
+ ret = intelEmitCopyBlit(intel,
+ intelImage->mt->cpp,
+ dstRowStride / intelImage->mt->cpp,
+ temp_bo, 0, GL_FALSE,
+ dst_pitch / intelImage->mt->cpp, dst_bo, 0,
+ intelImage->mt->region->tiling,
+ 0, 0, blit_x, blit_y, width, height,
+ GL_COPY);
+ assert(ret);
+ }
}
_mesa_unmap_teximage_pbo(ctx, packing);
- if (intelImage->mt) {
+ if (temp_bo) {
+ drm_intel_bo_unreference(temp_bo);
+ temp_bo = NULL;
+ } else if (intelImage->mt) {
intel_miptree_image_unmap(intel, intelImage->mt);
texImage->Data = NULL;
}