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From d8b34ab0604d80d0be22b8b78e9aa6bf4fac7db0 Mon Sep 17 00:00:00 2001
From: Sian Cao <yinshuiboy@gmail.com>
Date: Thu, 27 Oct 2016 15:19:32 +0800
Subject: texture: Support copy_sub_image
The patch is used to implement feature similar with kwin blur effect
by being abel to copy partial of framebuffer contents as texture and
do post blurring.
Signed-off-by:
Sian Cao <yinshuiboy@gmail.com>: initial
Bowen Li <sensor.wen@gmail.com>: fix coding style
---
cogl/cogl-atlas-texture.c | 1 +
cogl/cogl-driver.h | 10 ++++++++
cogl/cogl-sub-texture.c | 1 +
cogl/cogl-texture-2d-sliced.c | 1 +
cogl/cogl-texture-2d.c | 30 ++++++++++++++++++++++
cogl/cogl-texture-3d.c | 1 +
cogl/cogl-texture-private.h | 9 +++++++
cogl/cogl-texture-rectangle.c | 1 +
cogl/cogl-texture.c | 33 ++++++++++++++++++++++++
cogl/cogl-texture.h | 9 +++++++
cogl/driver/gl/cogl-texture-2d-gl-private.h | 9 +++++++
cogl/driver/gl/cogl-texture-2d-gl.c | 39 +++++++++++++++++++++++++++++
cogl/driver/gl/gl/cogl-driver-gl.c | 1 +
cogl/driver/gl/gles/cogl-driver-gles.c | 1 +
cogl/driver/nop/cogl-driver-nop.c | 1 +
cogl/winsys/cogl-texture-pixmap-x11.c | 1 +
16 files changed, 148 insertions(+)
diff --git a/cogl/cogl-atlas-texture.c b/cogl/cogl-atlas-texture.c
index 1c8b569..e411302 100644
--- a/cogl/cogl-atlas-texture.c
+++ b/cogl/cogl-atlas-texture.c
@@ -1027,6 +1027,7 @@ cogl_atlas_texture_vtable =
FALSE, /* not primitive */
_cogl_atlas_texture_allocate,
_cogl_atlas_texture_set_region,
+ NULL, /* copy_sub_image */
NULL, /* get_data */
_cogl_atlas_texture_foreach_sub_texture_in_region,
_cogl_atlas_texture_get_max_waste,
diff --git a/cogl/cogl-driver.h b/cogl/cogl-driver.h
index 648228c..4a0aeaf 100644
--- a/cogl/cogl-driver.h
+++ b/cogl/cogl-driver.h
@@ -192,6 +192,16 @@ struct _CoglDriverVtable
int level,
CoglError **error);
+ CoglBool
+ (* texture_2d_copy_sub_image) (CoglTexture2D *tex_2d,
+ GLint xoffset,
+ GLint yoffset,
+ GLint x,
+ GLint y,
+ GLsizei width,
+ GLsizei height,
+ CoglError **error);
+
/* Reads back the full contents of the given texture and write it to
* @data in the given @format and with the given @rowstride.
*
diff --git a/cogl/cogl-sub-texture.c b/cogl/cogl-sub-texture.c
index 7baf95e..0a16193 100644
--- a/cogl/cogl-sub-texture.c
+++ b/cogl/cogl-sub-texture.c
@@ -460,6 +460,7 @@ cogl_sub_texture_vtable =
FALSE, /* not primitive */
_cogl_sub_texture_allocate,
_cogl_sub_texture_set_region,
+ NULL, /* copy_sub_image */
NULL, /* get_data */
_cogl_sub_texture_foreach_sub_texture_in_region,
_cogl_sub_texture_get_max_waste,
diff --git a/cogl/cogl-texture-2d-sliced.c b/cogl/cogl-texture-2d-sliced.c
index e76bef6..b0b099f 100644
--- a/cogl/cogl-texture-2d-sliced.c
+++ b/cogl/cogl-texture-2d-sliced.c
@@ -1526,6 +1526,7 @@ cogl_texture_2d_sliced_vtable =
FALSE, /* not primitive */
_cogl_texture_2d_sliced_allocate,
_cogl_texture_2d_sliced_set_region,
+ NULL, /* copy_sub_image */
NULL, /* get_data */
_cogl_texture_2d_sliced_foreach_sub_texture_in_region,
_cogl_texture_2d_sliced_get_max_waste,
diff --git a/cogl/cogl-texture-2d.c b/cogl/cogl-texture-2d.c
index cc28cd9..d9ab188 100644
--- a/cogl/cogl-texture-2d.c
+++ b/cogl/cogl-texture-2d.c
@@ -628,6 +628,35 @@ _cogl_texture_2d_set_region (CoglTexture *tex,
}
static CoglBool
+_cogl_texture_2d_copy_sub_image (CoglTexture *tex,
+ GLint xoffset,
+ GLint yoffset,
+ GLint x,
+ GLint y,
+ GLsizei width,
+ GLsizei height,
+ CoglError **error)
+{
+ CoglContext *ctx = tex->context;
+ CoglTexture2D *tex_2d = COGL_TEXTURE_2D (tex);
+
+ cogl_texture_allocate (tex, NULL); /* (abort on error) */
+
+ ctx->driver_vtable->texture_2d_copy_sub_image (tex_2d,
+ xoffset,
+ yoffset,
+ x,
+ y,
+ width,
+ height,
+ error);
+
+ tex_2d->mipmaps_dirty = TRUE;
+
+ return TRUE;
+}
+
+static CoglBool
_cogl_texture_2d_get_data (CoglTexture *tex,
CoglPixelFormat format,
int rowstride,
@@ -675,6 +704,7 @@ cogl_texture_2d_vtable =
TRUE, /* primitive */
_cogl_texture_2d_allocate,
_cogl_texture_2d_set_region,
+ _cogl_texture_2d_copy_sub_image,
_cogl_texture_2d_get_data,
NULL, /* foreach_sub_texture_in_region */
_cogl_texture_2d_get_max_waste,
diff --git a/cogl/cogl-texture-3d.c b/cogl/cogl-texture-3d.c
index 8e2ff08..a59d386 100644
--- a/cogl/cogl-texture-3d.c
+++ b/cogl/cogl-texture-3d.c
@@ -741,6 +741,7 @@ cogl_texture_3d_vtable =
TRUE, /* primitive */
_cogl_texture_3d_allocate,
_cogl_texture_3d_set_region,
+ NULL, /* copy_sub_image */
_cogl_texture_3d_get_data,
NULL, /* foreach_sub_texture_in_region */
_cogl_texture_3d_get_max_waste,
diff --git a/cogl/cogl-texture-private.h b/cogl/cogl-texture-private.h
index 472c41d..34ff81c 100644
--- a/cogl/cogl-texture-private.h
+++ b/cogl/cogl-texture-private.h
@@ -90,6 +90,15 @@ struct _CoglTextureVtable
CoglBitmap *bitmap,
CoglError **error);
+ CoglBool (* copy_sub_image) (CoglTexture *texture,
+ GLint xoffset,
+ GLint yoffset,
+ GLint x,
+ GLint y,
+ GLsizei width,
+ GLsizei height,
+ CoglError **error);
+
/* This should copy the image data of the texture into @data. The
requested format will have been first passed through
ctx->texture_driver->find_best_gl_get_data_format so it should
diff --git a/cogl/cogl-texture-rectangle.c b/cogl/cogl-texture-rectangle.c
index 65d2f06..9f533c9 100644
--- a/cogl/cogl-texture-rectangle.c
+++ b/cogl/cogl-texture-rectangle.c
@@ -761,6 +761,7 @@ cogl_texture_rectangle_vtable =
TRUE, /* primitive */
_cogl_texture_rectangle_allocate,
_cogl_texture_rectangle_set_region,
+ NULL, /* copy_sub_image */
_cogl_texture_rectangle_get_data,
NULL, /* foreach_sub_texture_in_region */
_cogl_texture_rectangle_get_max_waste,
diff --git a/cogl/cogl-texture.c b/cogl/cogl-texture.c
index d93db22..1f4b43c 100644
--- a/cogl/cogl-texture.c
+++ b/cogl/cogl-texture.c
@@ -514,6 +514,39 @@ cogl_texture_set_region (CoglTexture *texture,
}
CoglBool
+cogl_texture_copy_sub_image (CoglTexture *texture,
+ int xoffset,
+ int yoffset,
+ int x,
+ int y,
+ size_t width,
+ size_t height)
+{
+ CoglError *ignore_error = NULL;
+ CoglBool status;
+
+ if (!texture->allocated)
+ cogl_texture_allocate (texture, NULL);
+
+ if (!texture->vtable->copy_sub_image)
+ return FALSE;
+
+ status = texture->vtable->copy_sub_image (texture,
+ xoffset,
+ yoffset,
+ x,
+ y,
+ width,
+ height,
+ &ignore_error);
+
+ if (!status)
+ cogl_error_free (ignore_error);
+ return status;
+}
+
+
+CoglBool
cogl_texture_set_data (CoglTexture *texture,
CoglPixelFormat format,
int rowstride,
diff --git a/cogl/cogl-texture.h b/cogl/cogl-texture.h
index 2718830..81657d1 100644
--- a/cogl/cogl-texture.h
+++ b/cogl/cogl-texture.h
@@ -399,6 +399,15 @@ cogl_texture_set_region (CoglTexture *texture,
unsigned int rowstride,
const uint8_t *data);
+CoglBool
+cogl_texture_copy_sub_image (CoglTexture *texture,
+ int xoffset,
+ int yoffset,
+ int x,
+ int y,
+ size_t width,
+ size_t height);
+
#if defined (COGL_ENABLE_EXPERIMENTAL_API)
/**
diff --git a/cogl/driver/gl/cogl-texture-2d-gl-private.h b/cogl/driver/gl/cogl-texture-2d-gl-private.h
index e5c6585..d2f9985 100644
--- a/cogl/driver/gl/cogl-texture-2d-gl-private.h
+++ b/cogl/driver/gl/cogl-texture-2d-gl-private.h
@@ -109,6 +109,15 @@ _cogl_texture_2d_gl_copy_from_bitmap (CoglTexture2D *tex_2d,
int dst_y,
int level,
CoglError **error);
+CoglBool
+_cogl_texture_2d_gl_copy_sub_image (CoglTexture2D *tex_2d,
+ GLint xoffset,
+ GLint yoffset,
+ GLint x,
+ GLint y,
+ GLsizei width,
+ GLsizei height,
+ CoglError **error);
void
_cogl_texture_2d_gl_get_data (CoglTexture2D *tex_2d,
diff --git a/cogl/driver/gl/cogl-texture-2d-gl.c b/cogl/driver/gl/cogl-texture-2d-gl.c
index 8675f52..bc15ac5 100644
--- a/cogl/driver/gl/cogl-texture-2d-gl.c
+++ b/cogl/driver/gl/cogl-texture-2d-gl.c
@@ -35,6 +35,7 @@
#include <config.h>
#include <string.h>
+#include <stdio.h>
#include "cogl-private.h"
#include "cogl-texture-private.h"
@@ -719,6 +720,44 @@ _cogl_texture_2d_gl_copy_from_bitmap (CoglTexture2D *tex_2d,
return status;
}
+CoglBool
+_cogl_texture_2d_gl_copy_sub_image (CoglTexture2D *tex_2d,
+ GLint xoffset,
+ GLint yoffset,
+ GLint x,
+ GLint y,
+ GLsizei width,
+ GLsizei height,
+ CoglError **error)
+{
+ CoglContext *ctx = COGL_TEXTURE (tex_2d)->context;
+
+ if (ctx->current_read_buffer == NULL)
+ return FALSE;
+
+ if (ctx->current_draw_buffer)
+ _cogl_framebuffer_flush_journal (ctx->current_draw_buffer);
+
+ if (ctx->current_read_buffer != NULL &&
+ ctx->current_read_buffer != ctx->current_draw_buffer)
+ _cogl_framebuffer_flush_journal (ctx->current_read_buffer);
+
+ _cogl_bind_gl_texture_transient (GL_TEXTURE_2D,
+ tex_2d->gl_texture,
+ tex_2d->is_foreign);
+
+ ctx->glCopyTexSubImage2D (GL_TEXTURE_2D,
+ 0,
+ xoffset,
+ yoffset,
+ x,
+ y,
+ width,
+ height);
+
+ return TRUE;
+}
+
void
_cogl_texture_2d_gl_get_data (CoglTexture2D *tex_2d,
CoglPixelFormat format,
diff --git a/cogl/driver/gl/gl/cogl-driver-gl.c b/cogl/driver/gl/gl/cogl-driver-gl.c
index f305b6a..f7f5020 100644
--- a/cogl/driver/gl/gl/cogl-driver-gl.c
+++ b/cogl/driver/gl/gl/cogl-driver-gl.c
@@ -695,6 +695,7 @@ _cogl_driver_gl =
_cogl_texture_2d_gl_get_gl_handle,
_cogl_texture_2d_gl_generate_mipmap,
_cogl_texture_2d_gl_copy_from_bitmap,
+ _cogl_texture_2d_gl_copy_sub_image,
_cogl_texture_2d_gl_get_data,
_cogl_gl_flush_attributes_state,
_cogl_clip_stack_gl_flush,
diff --git a/cogl/driver/gl/gles/cogl-driver-gles.c b/cogl/driver/gl/gles/cogl-driver-gles.c
index e94449f..f5ac771 100644
--- a/cogl/driver/gl/gles/cogl-driver-gles.c
+++ b/cogl/driver/gl/gles/cogl-driver-gles.c
@@ -476,6 +476,7 @@ _cogl_driver_gles =
_cogl_texture_2d_gl_get_gl_handle,
_cogl_texture_2d_gl_generate_mipmap,
_cogl_texture_2d_gl_copy_from_bitmap,
+ _cogl_texture_2d_gl_copy_sub_image,
NULL, /* texture_2d_get_data */
_cogl_gl_flush_attributes_state,
_cogl_clip_stack_gl_flush,
diff --git a/cogl/driver/nop/cogl-driver-nop.c b/cogl/driver/nop/cogl-driver-nop.c
index 53f5975..9d88955 100644
--- a/cogl/driver/nop/cogl-driver-nop.c
+++ b/cogl/driver/nop/cogl-driver-nop.c
@@ -80,6 +80,7 @@ _cogl_driver_nop =
_cogl_texture_2d_nop_get_gl_handle,
_cogl_texture_2d_nop_generate_mipmap,
_cogl_texture_2d_nop_copy_from_bitmap,
+ NULL, /* texture_2d_copy_from_image */
NULL, /* texture_2d_get_data */
_cogl_nop_flush_attributes_state,
_cogl_clip_stack_nop_flush,
diff --git a/cogl/winsys/cogl-texture-pixmap-x11.c b/cogl/winsys/cogl-texture-pixmap-x11.c
index 398c357..a44cdaf 100644
--- a/cogl/winsys/cogl-texture-pixmap-x11.c
+++ b/cogl/winsys/cogl-texture-pixmap-x11.c
@@ -1164,6 +1164,7 @@ cogl_texture_pixmap_x11_vtable =
FALSE, /* not primitive */
_cogl_texture_pixmap_x11_allocate,
_cogl_texture_pixmap_x11_set_region,
+ NULL, /* copy_sub_image */
_cogl_texture_pixmap_x11_get_data,
_cogl_texture_pixmap_x11_foreach_sub_texture_in_region,
_cogl_texture_pixmap_x11_get_max_waste,
--
2.9.5
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