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glamor: Optimize glamor_finish_access.

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use pbo if possible when we load texture to a temporary tex.
And for the previous direct texture load function, it's not
correct and get removed in this commit.

Signed-off-by: Zhigang Gong <zhigang.gong@linux.intel.com>
This commit is contained in:
Zhigang Gong 2011-06-01 18:02:03 +08:00
parent b8ce483f58
commit 925fc9724f
1 changed files with 36 additions and 67 deletions
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103
glamor/glamor_core.c
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@ -295,7 +295,7 @@ glamor_prepare_access(DrawablePtr drawable, glamor_access_t access)
glamor_screen_private *glamor_priv =
glamor_get_screen_private(drawable->pScreen);
if (pixmap_priv == NULL)
if (!pixmap_priv)
return TRUE;
if (pixmap_priv->fb == 0) {
@ -425,53 +425,6 @@ glamor_init_finish_access_shaders(ScreenPtr screen)
}
}
/* Load the pixmap's data to the fbo's texutre directly.
* Only useful when the platform enable yInverted, for
* example MESA/EGL.
* */
void glamor_load_texture_pixmap_direct(PixmapPtr pixmap)
{
glamor_pixmap_private *pixmap_priv = glamor_get_pixmap_private(pixmap);
glamor_screen_private *glamor_priv =
glamor_get_screen_private(pixmap->drawable.pScreen);
unsigned int stride, row_length;
GLenum format, type;
stride = pixmap->devKind;
row_length = (stride * 8) / pixmap->drawable.bitsPerPixel;
switch (pixmap->drawable.depth) {
case 1:
format = GL_COLOR_INDEX;
type = GL_BITMAP;
row_length = stride;
break;
case 8:
format = GL_ALPHA;
type = GL_UNSIGNED_BYTE;
break;
case 24:
assert(pixmap->drawable.bitsPerPixel == 32);
/* FALLTHROUGH */
case 32:
format = GL_BGRA;
type = GL_UNSIGNED_INT_8_8_8_8_REV;
break;
default:
ErrorF("Unknown finishaccess depth %d\n", pixmap->drawable.depth);
return;
}
glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, pixmap_priv->fb);
glBindTexture(GL_TEXTURE_2D, pixmap_priv->tex);
glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
glPixelStorei(GL_UNPACK_ROW_LENGTH, row_length);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA,
pixmap->drawable.width, pixmap->drawable.height, 0,
format, type, pixmap->devPrivate.ptr);
glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);
}
/*
* Load texture from the pixmap's data pointer and then
* draw the texture to the fbo, and flip the y axis.
@ -493,8 +446,18 @@ glamor_load_texture_pixmap(PixmapPtr pixmap)
1, 1,
1, 0,
0, 0};
static float texcoords_inverted[8] = {0, 0,
1, 0,
1, 1,
0, 1};
float *ptexcoords;
void * texel;
GLuint tex;
if (glamor_priv->yInverted)
ptexcoords = texcoords_inverted;
stride = pixmap->devKind;
row_length = (stride * 8) / pixmap->drawable.bitsPerPixel;
switch (pixmap->drawable.depth) {
@ -523,7 +486,7 @@ glamor_load_texture_pixmap(PixmapPtr pixmap)
glEnableClientState(GL_VERTEX_ARRAY);
glClientActiveTexture(GL_TEXTURE0);
glTexCoordPointer(2, GL_FLOAT, sizeof(float) * 2, texcoords);
glTexCoordPointer(2, GL_FLOAT, sizeof(float) * 2, ptexcoords);
glEnableClientState(GL_TEXTURE_COORD_ARRAY);
glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, pixmap_priv->fb);
@ -535,9 +498,18 @@ glamor_load_texture_pixmap(PixmapPtr pixmap)
glGenTextures(1, &tex);
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, tex);
if (glamor_priv->yInverted || GLEW_MESA_pack_invert) {
texel = NULL;
glBindBufferARB(GL_PIXEL_UNPACK_BUFFER_EXT, pixmap_priv->pbo);
}
else
texel = pixmap->devPrivate.ptr;
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA,
pixmap->drawable.width, pixmap->drawable.height, 0,
format, type, pixmap->devPrivate.ptr);
format, type, texel);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glEnable(GL_TEXTURE_2D);
@ -560,13 +532,11 @@ glamor_finish_access(DrawablePtr drawable)
glamor_get_screen_private(drawable->pScreen);
PixmapPtr pixmap = glamor_get_drawable_pixmap(drawable);
glamor_pixmap_private *pixmap_priv = glamor_get_pixmap_private(pixmap);
unsigned int stride, row_length;
GLenum format, type;
/* Check if finish_access was already called once on this */
if (pixmap->devPrivate.ptr == NULL)
return;
if (pixmap_priv == NULL)
if (!pixmap_priv)
return;
if (pixmap_priv->fb == 0) {
@ -577,21 +547,20 @@ glamor_finish_access(DrawablePtr drawable)
return;
}
if (pixmap_priv->access_mode != GLAMOR_ACCESS_RO) {
if (glamor_priv->yInverted)
glamor_load_texture_pixmap_direct(pixmap);
else
glamor_load_texture_pixmap(pixmap);
}
if (GLEW_MESA_pack_invert || glamor_priv->yInverted) {
glBindBufferARB (GL_PIXEL_PACK_BUFFER_EXT, pixmap_priv->pbo);
glUnmapBufferARB (GL_PIXEL_PACK_BUFFER_EXT);
glBindBufferARB (GL_PIXEL_PACK_BUFFER_EXT, 0);
glDeleteBuffersARB (1, &pixmap_priv->pbo);
pixmap_priv->pbo = 0;
} else
free(pixmap->devPrivate.ptr);
if ( pixmap_priv->access_mode != GLAMOR_ACCESS_RO) {
glamor_load_texture_pixmap(pixmap);
}
if (GLEW_MESA_pack_invert || glamor_priv->yInverted) {
glBindBufferARB (GL_PIXEL_PACK_BUFFER_EXT, pixmap_priv->pbo);
glUnmapBufferARB (GL_PIXEL_PACK_BUFFER_EXT);
glBindBufferARB (GL_PIXEL_PACK_BUFFER_EXT, 0);
glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_EXT, 0);
glDeleteBuffersARB (1, &pixmap_priv->pbo);
pixmap_priv->pbo = 0;
} else
free(pixmap->devPrivate.ptr);
pixmap->devPrivate.ptr = NULL;
}