[virglrenderer-devel] [PATCH v3 1/3] vrend: If available use glCopyImageSubData to execute memcopy like blits
Gert Wollny
gert.wollny at collabora.com
Thu Jul 12 10:36:59 UTC 2018
When the host is gles >= 3.2, gl >= 4.3, or when the extension
GL_(ARB|EXT|OES)_copy_image is available, memcopy like blitting and region
copying can be done for many color format combinations by using
glCopyImageSubData.
This fixes a number of tests from the subset
dEQP-GLES31.functional.copy_image.non_compressed.viewclass_*
v2: - Clean list of canonical formats (Gurchetan Singh)
- Use size of canonical formats to decide whether they can be copied via
gCopyImageSubData
- Also honour the render state when deciding whether glCopyImageSubData
will do, or whether we need to do a blit.
v3: - replace format size check by compatibility check (Gurchetan Singh) but
keep the check seperate because we need to add logic for compressed
texture later
Signed-off-by: Gert Wollny <gert.wollny at collabora.com>
---
src/vrend_formats.c | 17 ++++++++++++++
src/vrend_renderer.c | 55 ++++++++++++++++++++++++++++++++++++++++++--
src/vrend_renderer.h | 2 ++
3 files changed, 72 insertions(+), 2 deletions(-)
diff --git a/src/vrend_formats.c b/src/vrend_formats.c
index 82a1b5c..09edc43 100644
--- a/src/vrend_formats.c
+++ b/src/vrend_formats.c
@@ -487,3 +487,20 @@ unsigned vrend_renderer_query_multisample_caps(unsigned max_samples, struct virg
glDeleteFramebuffers(1, &fbo);
return max_samples_confirmed;
}
+
+boolean format_is_copy_compatible(enum pipe_format src, enum pipe_format dst)
+{
+ int r;
+
+ if (src == dst)
+ return true;
+
+ if (util_format_is_plain(src) && util_format_is_plain(dst)) {
+ const struct util_format_description *src_desc = util_format_description(src);
+ const struct util_format_description *dst_desc = util_format_description(dst);
+ return util_is_format_compatible(src_desc, dst_desc);
+ }
+
+ /* compressed formats will be supported later */
+ return false;
+}
\ No newline at end of file
diff --git a/src/vrend_renderer.c b/src/vrend_renderer.c
index cc99087..e659318 100644
--- a/src/vrend_renderer.c
+++ b/src/vrend_renderer.c
@@ -119,6 +119,7 @@ struct global_renderer_state {
bool have_texture_storage;
bool have_tessellation;
bool have_texture_view;
+ bool have_copy_image;
/* these appeared broken on at least one driver */
bool use_explicit_locations;
@@ -4534,6 +4535,12 @@ int vrend_renderer_init(struct vrend_if_cbs *cbs, uint32_t flags)
if (gl_ver >= 46 || epoxy_has_gl_extension("GL_ARB_polygon_offset_clamp"))
vrend_state.have_polygon_offset_clamp = true;
+ if (gl_ver >= 43 || (gles && gl_ver >= 32) ||
+ epoxy_has_gl_extension("GL_ARB_copy_image") ||
+ epoxy_has_gl_extension("GL_EXT_copy_image") ||
+ epoxy_has_gl_extension("GL_OES_copy_image"))
+ vrend_state.have_copy_image = true;
+
/* callbacks for when we are cleaning up the object table */
vrend_resource_set_destroy_callback(vrend_destroy_resource_object);
vrend_object_set_destroy_callback(VIRGL_OBJECT_QUERY, vrend_destroy_query_object);
@@ -6336,6 +6345,22 @@ static void vrend_resource_copy_fallback(struct vrend_resource *src_res,
free(tptr);
}
+
+static inline void
+vrend_copy_sub_image(struct vrend_resource* src_res, struct vrend_resource * dst_res,
+ uint32_t src_level, const struct pipe_box *src_box,
+ uint32_t dst_level, uint32_t dstx, uint32_t dsty, uint32_t dstz)
+{
+ glCopyImageSubData(src_res->id,
+ tgsitargettogltarget(src_res->base.target, src_res->base.nr_samples),
+ src_level, src_box->x, src_box->y, src_box->z,
+ dst_res->id,
+ tgsitargettogltarget(dst_res->base.target, dst_res->base.nr_samples),
+ dst_level, dstx, dsty, dstz,
+ src_box->width, src_box->height,src_box->depth);
+}
+
+
void vrend_renderer_resource_copy_region(struct vrend_context *ctx,
uint32_t dst_handle, uint32_t dst_level,
uint32_t dstx, uint32_t dsty, uint32_t dstz,
@@ -6368,11 +6393,19 @@ void vrend_renderer_resource_copy_region(struct vrend_context *ctx,
return;
}
+ if (vrend_state.have_copy_image) {
+ if (format_is_copy_compatible(src_res->base.format,dst_res->base.format) &&
+ src_res->base.nr_samples == dst_res->base.nr_samples) {
+ vrend_copy_sub_image(src_res, dst_res, src_level, src_box,
+ dst_level, dstx, dsty, dstz);
+ return;
+ }
+ }
+
if (!vrend_format_can_render(src_res->base.format) ||
!vrend_format_can_render(dst_res->base.format)) {
vrend_resource_copy_fallback(src_res, dst_res, dst_level, dstx,
dsty, dstz, src_level, src_box);
-
return;
}
@@ -6644,7 +6677,25 @@ void vrend_renderer_blit(struct vrend_context *ctx,
if (info->render_condition_enable == false)
vrend_pause_render_condition(ctx, true);
- vrend_renderer_blit_int(ctx, src_res, dst_res, info);
+ /* The gallium blit function can be called for a general blit that may
+ * scale, convert the data, and apply some rander states or if is called via
+ * glCopyImageSubData. For the latter case forward the call to the
+ * glCopyImageSubData function, otherwise use a framebuffer blit.
+ */
+ if (vrend_state.have_copy_image && !info->render_condition_enable &&
+ format_is_copy_compatible(info->src.format,info->dst.format) &&
+ !info->scissor_enable && (info->filter == PIPE_TEX_FILTER_NEAREST) &&
+ !info->alpha_blend && (info->mask == PIPE_MASK_RGBA) &&
+ (src_res->base.nr_samples == dst_res->base.nr_samples) &&
+ info->src.box.width == info->dst.box.width &&
+ info->src.box.height == info->dst.box.height &&
+ info->src.box.depth == info->dst.box.depth) {
+ vrend_copy_sub_image(src_res, dst_res, info->src.level, &info->src.box,
+ info->dst.level, info->dst.box.x, info->dst.box.y,
+ info->dst.box.z);
+ } else {
+ vrend_renderer_blit_int(ctx, src_res, dst_res, info);
+ }
if (info->render_condition_enable == false)
vrend_pause_render_condition(ctx, false);
diff --git a/src/vrend_renderer.h b/src/vrend_renderer.h
index f59d45f..8158ea6 100644
--- a/src/vrend_renderer.h
+++ b/src/vrend_renderer.h
@@ -380,6 +380,8 @@ void vrend_fb_bind_texture(struct vrend_resource *res,
uint32_t level, uint32_t layer);
bool vrend_is_ds_format(enum virgl_formats format);
bool vrend_format_is_emulated_alpha(enum virgl_formats format);
+boolean format_is_copy_compatible(enum pipe_format src, enum pipe_format dst);
+
/* blitter interface */
void vrend_renderer_blit_gl(struct vrend_context *ctx,
struct vrend_resource *src_res,
--
2.17.1
More information about the virglrenderer-devel
mailing list