Mesa (master): gallium,st/mesa: don' t use blit-based transfers with software rasterizers
Marek Olšák
mareko at kemper.freedesktop.org
Sat Mar 23 13:01:58 UTC 2013
Module: Mesa
Branch: master
Commit: 3e10ab6b22341c06a9352b1e029b923f4d8405b9
URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=3e10ab6b22341c06a9352b1e029b923f4d8405b9
Author: Marek Olšák <maraeo at gmail.com>
Date: Thu Mar 14 17:18:43 2013 +0100
gallium,st/mesa: don't use blit-based transfers with software rasterizers
The blit-based paths for TexImage, GetTexImage, and ReadPixels aren't very
fast with software rasterizer. Now Gallium drivers have the ability to turn
them off.
Reviewed-by: Brian Paul <brianp at vmware.com>
Tested-by: Brian Paul <brianp at vmware.com>
---
src/gallium/docs/source/screen.rst | 4 ++++
src/gallium/drivers/llvmpipe/lp_screen.c | 2 ++
src/gallium/drivers/nv30/nv30_screen.c | 1 +
src/gallium/drivers/nv50/nv50_screen.c | 2 ++
src/gallium/drivers/nvc0/nvc0_screen.c | 2 ++
src/gallium/drivers/r300/r300_screen.c | 1 +
src/gallium/drivers/r600/r600_pipe.c | 1 +
src/gallium/drivers/radeonsi/radeonsi_pipe.c | 1 +
src/gallium/drivers/softpipe/sp_screen.c | 1 +
src/gallium/drivers/svga/svga_screen.c | 3 +++
src/gallium/include/pipe/p_defines.h | 3 ++-
src/mesa/state_tracker/st_cb_readpixels.c | 4 ++++
src/mesa/state_tracker/st_cb_texture.c | 8 ++++++++
src/mesa/state_tracker/st_context.c | 2 ++
src/mesa/state_tracker/st_context.h | 1 +
15 files changed, 35 insertions(+), 1 deletions(-)
diff --git a/src/gallium/docs/source/screen.rst b/src/gallium/docs/source/screen.rst
index 0550a30..9b87049 100644
--- a/src/gallium/docs/source/screen.rst
+++ b/src/gallium/docs/source/screen.rst
@@ -145,6 +145,10 @@ The integer capabilities:
TEXCOORD semantic.
Also, TGSI_SEMANTIC_PCOORD becomes available, which labels a fragment shader
input that will always be replaced with sprite coordinates.
+* ``PIPE_CAP_PREFER_BLIT_BASED_TEXTURE_TRANSFER``: Whether it is preferable
+ to use a blit to implement a texture transfer which needs format conversions
+ and swizzling in state trackers. Generally, all hardware drivers with
+ dedicated memory should return 1 and all software rasterizers should return 0.
.. _pipe_capf:
diff --git a/src/gallium/drivers/llvmpipe/lp_screen.c b/src/gallium/drivers/llvmpipe/lp_screen.c
index 6760db0..e8c6ab1 100644
--- a/src/gallium/drivers/llvmpipe/lp_screen.c
+++ b/src/gallium/drivers/llvmpipe/lp_screen.c
@@ -222,6 +222,8 @@ llvmpipe_get_param(struct pipe_screen *screen, enum pipe_cap param)
return 1;
case PIPE_CAP_TEXTURE_BUFFER_OFFSET_ALIGNMENT:
return 1;
+ case PIPE_CAP_PREFER_BLIT_BASED_TEXTURE_TRANSFER:
+ return 0;
}
/* should only get here on unhandled cases */
debug_printf("Unexpected PIPE_CAP %d query\n", param);
diff --git a/src/gallium/drivers/nv30/nv30_screen.c b/src/gallium/drivers/nv30/nv30_screen.c
index e17ee76..4084869 100644
--- a/src/gallium/drivers/nv30/nv30_screen.c
+++ b/src/gallium/drivers/nv30/nv30_screen.c
@@ -126,6 +126,7 @@ nv30_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
case PIPE_CAP_VERTEX_BUFFER_OFFSET_4BYTE_ALIGNED_ONLY:
case PIPE_CAP_VERTEX_BUFFER_STRIDE_4BYTE_ALIGNED_ONLY:
case PIPE_CAP_VERTEX_ELEMENT_SRC_OFFSET_4BYTE_ALIGNED_ONLY:
+ case PIPE_CAP_PREFER_BLIT_BASED_TEXTURE_TRANSFER:
return 1;
default:
debug_printf("unknown param %d\n", param);
diff --git a/src/gallium/drivers/nv50/nv50_screen.c b/src/gallium/drivers/nv50/nv50_screen.c
index fb29b22..0a20ae3 100644
--- a/src/gallium/drivers/nv50/nv50_screen.c
+++ b/src/gallium/drivers/nv50/nv50_screen.c
@@ -187,6 +187,8 @@ nv50_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
case PIPE_CAP_TGSI_TEXCOORD:
case PIPE_CAP_TEXTURE_MULTISAMPLE:
return 0;
+ case PIPE_CAP_PREFER_BLIT_BASED_TEXTURE_TRANSFER:
+ return 1;
default:
NOUVEAU_ERR("unknown PIPE_CAP %d\n", param);
return 0;
diff --git a/src/gallium/drivers/nvc0/nvc0_screen.c b/src/gallium/drivers/nvc0/nvc0_screen.c
index 73cf0af..b6cf2ca 100644
--- a/src/gallium/drivers/nvc0/nvc0_screen.c
+++ b/src/gallium/drivers/nvc0/nvc0_screen.c
@@ -179,6 +179,8 @@ nvc0_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
return 0;
case PIPE_CAP_COMPUTE:
return (class_3d >= NVE4_3D_CLASS) ? 1 : 0;
+ case PIPE_CAP_PREFER_BLIT_BASED_TEXTURE_TRANSFER:
+ return 1;
default:
NOUVEAU_ERR("unknown PIPE_CAP %d\n", param);
return 0;
diff --git a/src/gallium/drivers/r300/r300_screen.c b/src/gallium/drivers/r300/r300_screen.c
index 46fb869..bd16c3b 100644
--- a/src/gallium/drivers/r300/r300_screen.c
+++ b/src/gallium/drivers/r300/r300_screen.c
@@ -106,6 +106,7 @@ static int r300_get_param(struct pipe_screen* pscreen, enum pipe_cap param)
case PIPE_CAP_USER_INDEX_BUFFERS:
case PIPE_CAP_USER_CONSTANT_BUFFERS:
case PIPE_CAP_DEPTH_CLIP_DISABLE: /* XXX implemented, but breaks Regnum Online */
+ case PIPE_CAP_PREFER_BLIT_BASED_TEXTURE_TRANSFER:
return 1;
case PIPE_CAP_MIN_MAP_BUFFER_ALIGNMENT:
diff --git a/src/gallium/drivers/r600/r600_pipe.c b/src/gallium/drivers/r600/r600_pipe.c
index 7a84f3d..81448d4 100644
--- a/src/gallium/drivers/r600/r600_pipe.c
+++ b/src/gallium/drivers/r600/r600_pipe.c
@@ -564,6 +564,7 @@ static int r600_get_param(struct pipe_screen* pscreen, enum pipe_cap param)
case PIPE_CAP_START_INSTANCE:
case PIPE_CAP_MAX_DUAL_SOURCE_RENDER_TARGETS:
case PIPE_CAP_TEXTURE_BUFFER_OBJECTS:
+ case PIPE_CAP_PREFER_BLIT_BASED_TEXTURE_TRANSFER:
return 1;
case PIPE_CAP_TGSI_TEXCOORD:
return 0;
diff --git a/src/gallium/drivers/radeonsi/radeonsi_pipe.c b/src/gallium/drivers/radeonsi/radeonsi_pipe.c
index 8598438..672017a 100644
--- a/src/gallium/drivers/radeonsi/radeonsi_pipe.c
+++ b/src/gallium/drivers/radeonsi/radeonsi_pipe.c
@@ -329,6 +329,7 @@ static int r600_get_param(struct pipe_screen* pscreen, enum pipe_cap param)
case PIPE_CAP_USER_CONSTANT_BUFFERS:
case PIPE_CAP_START_INSTANCE:
case PIPE_CAP_NPOT_TEXTURES:
+ case PIPE_CAP_PREFER_BLIT_BASED_TEXTURE_TRANSFER:
return 1;
case PIPE_CAP_TGSI_TEXCOORD:
return 0;
diff --git a/src/gallium/drivers/softpipe/sp_screen.c b/src/gallium/drivers/softpipe/sp_screen.c
index 937035e..0261c69 100644
--- a/src/gallium/drivers/softpipe/sp_screen.c
+++ b/src/gallium/drivers/softpipe/sp_screen.c
@@ -174,6 +174,7 @@ softpipe_get_param(struct pipe_screen *screen, enum pipe_cap param)
case PIPE_CAP_TEXTURE_BUFFER_OFFSET_ALIGNMENT:
return 0;
case PIPE_CAP_TGSI_TEXCOORD:
+ case PIPE_CAP_PREFER_BLIT_BASED_TEXTURE_TRANSFER:
return 0;
}
/* should only get here on unhandled cases */
diff --git a/src/gallium/drivers/svga/svga_screen.c b/src/gallium/drivers/svga/svga_screen.c
index f0831b9..0558a46 100644
--- a/src/gallium/drivers/svga/svga_screen.c
+++ b/src/gallium/drivers/svga/svga_screen.c
@@ -224,6 +224,9 @@ svga_get_param(struct pipe_screen *screen, enum pipe_cap param)
case PIPE_CAP_GLSL_FEATURE_LEVEL:
return 120;
+ case PIPE_CAP_PREFER_BLIT_BASED_TEXTURE_TRANSFER:
+ return 1;
+
/* Unsupported features */
case PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION:
case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
diff --git a/src/gallium/include/pipe/p_defines.h b/src/gallium/include/pipe/p_defines.h
index 7f20b99..f59e78a 100644
--- a/src/gallium/include/pipe/p_defines.h
+++ b/src/gallium/include/pipe/p_defines.h
@@ -499,7 +499,8 @@ enum pipe_cap {
PIPE_CAP_CUBE_MAP_ARRAY = 76,
PIPE_CAP_TEXTURE_BUFFER_OBJECTS = 77,
PIPE_CAP_TEXTURE_BUFFER_OFFSET_ALIGNMENT = 78,
- PIPE_CAP_TGSI_TEXCOORD = 79
+ PIPE_CAP_TGSI_TEXCOORD = 79,
+ PIPE_CAP_PREFER_BLIT_BASED_TEXTURE_TRANSFER = 80
};
/**
diff --git a/src/mesa/state_tracker/st_cb_readpixels.c b/src/mesa/state_tracker/st_cb_readpixels.c
index b524738..bfed988 100644
--- a/src/mesa/state_tracker/st_cb_readpixels.c
+++ b/src/mesa/state_tracker/st_cb_readpixels.c
@@ -83,6 +83,10 @@ st_readpixels(struct gl_context *ctx, GLint x, GLint y,
st_validate_state(st);
st_flush_bitmap_cache(st);
+ if (!st->prefer_blit_based_texture_transfer) {
+ goto fallback;
+ }
+
/* This must be done after state validation. */
src = strb->texture;
diff --git a/src/mesa/state_tracker/st_cb_texture.c b/src/mesa/state_tracker/st_cb_texture.c
index 7307c60..94fbbf7 100644
--- a/src/mesa/state_tracker/st_cb_texture.c
+++ b/src/mesa/state_tracker/st_cb_texture.c
@@ -608,6 +608,10 @@ st_TexSubImage(struct gl_context *ctx, GLuint dims,
unsigned bind;
GLubyte *map;
+ if (!st->prefer_blit_based_texture_transfer) {
+ goto fallback;
+ }
+
if (!dst) {
goto fallback;
}
@@ -860,6 +864,10 @@ st_GetTexImage(struct gl_context * ctx,
ubyte *map = NULL;
boolean done = FALSE;
+ if (!st->prefer_blit_based_texture_transfer) {
+ goto fallback;
+ }
+
if (!stImage->pt) {
goto fallback;
}
diff --git a/src/mesa/state_tracker/st_context.c b/src/mesa/state_tracker/st_context.c
index e2d074d..cc87f2b 100644
--- a/src/mesa/state_tracker/st_context.c
+++ b/src/mesa/state_tracker/st_context.c
@@ -182,6 +182,8 @@ st_create_context_priv( struct gl_context *ctx, struct pipe_context *pipe,
st->has_stencil_export =
screen->get_param(screen, PIPE_CAP_SHADER_STENCIL_EXPORT);
st->has_shader_model3 = screen->get_param(screen, PIPE_CAP_SM3);
+ st->prefer_blit_based_texture_transfer = screen->get_param(screen,
+ PIPE_CAP_PREFER_BLIT_BASED_TEXTURE_TRANSFER);
st->needs_texcoord_semantic =
screen->get_param(screen, PIPE_CAP_TGSI_TEXCOORD);
diff --git a/src/mesa/state_tracker/st_context.h b/src/mesa/state_tracker/st_context.h
index c6c68ad..8786a03 100644
--- a/src/mesa/state_tracker/st_context.h
+++ b/src/mesa/state_tracker/st_context.h
@@ -84,6 +84,7 @@ struct st_context
boolean has_stencil_export; /**< can do shader stencil export? */
boolean has_time_elapsed;
boolean has_shader_model3;
+ boolean prefer_blit_based_texture_transfer;
boolean needs_texcoord_semantic;
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