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glamor: Don't map the vbo to system memory.

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Access mapped vbo address is too slow. And by use system memory
directly, rgb10text/aa10text increases from 980K/1160K to 117K/140K.

Signed-off-by: Zhigang Gong <zhigang.gong@linux.intel.com>
This commit is contained in:
Zhigang Gong 2011-06-28 17:17:23 +08:00
commit 8890b38857
2 changed files with 21 additions and 12 deletions
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31
glamor/glamor_render.c
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@ -285,10 +285,25 @@ glamor_lookup_composite_shader(ScreenPtr screen, struct shader_key *key)
return shader;
}
#define GLAMOR_COMPOSITE_VBO_SIZE 8192
static void
glamor_reset_composite_vbo(ScreenPtr screen)
{
glamor_screen_private *glamor_priv = glamor_get_screen_private(screen);
glamor_priv->vbo_offset = 0;
glamor_priv->vbo_size = GLAMOR_COMPOSITE_VBO_SIZE;
glamor_priv->render_nr_verts = 0;
}
void
glamor_init_composite_shaders(ScreenPtr screen)
{
glamor_screen_private *glamor_priv = glamor_get_screen_private(screen);
glamor_priv->vb = malloc(GLAMOR_COMPOSITE_VBO_SIZE);
assert(glamor_priv->vb != NULL);
glamor_reset_composite_vbo(screen);
}
static Bool
@ -599,13 +614,11 @@ glamor_flush_composite_rects(ScreenPtr screen)
if (!glamor_priv->render_nr_verts)
return;
glUnmapBufferARB(GL_ARRAY_BUFFER_ARB);
glamor_priv->vb = NULL;
glBufferDataARB(GL_ARRAY_BUFFER_ARB, glamor_priv->vbo_offset, glamor_priv->vb,
GL_STREAM_DRAW_ARB);
glDrawArrays(GL_QUADS, 0, glamor_priv->render_nr_verts);
glamor_priv->render_nr_verts = 0;
glamor_priv->vbo_size = 0;
glamor_reset_composite_vbo(screen);
}
static void
@ -622,16 +635,10 @@ glamor_emit_composite_rect(ScreenPtr screen,
glamor_flush_composite_rects(screen);
}
if (glamor_priv->vbo_size == 0) {
if (glamor_priv->vbo_offset == 0) {
if (glamor_priv->vbo == 0)
glGenBuffersARB(1, &glamor_priv->vbo);
glBindBufferARB(GL_ARRAY_BUFFER_ARB, glamor_priv->vbo);
glamor_priv->vbo_size = 4096;
glBufferDataARB(GL_ARRAY_BUFFER_ARB, glamor_priv->vbo_size, NULL,
GL_STREAM_DRAW_ARB);
glamor_priv->vbo_offset = 0;
glamor_priv->vb = glMapBufferARB(GL_ARRAY_BUFFER_ARB, GL_WRITE_ONLY_ARB);
glamor_setup_composite_vbo(screen);
}