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2008-06-14 Matthew Allum <mallum@openedhand.com>

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* README:
        Make needed GL version 1.4, note GLES2 support, add some notes
        for COGL.
This commit is contained in:
Matthew Allum 2008-06-13 23:03:45 +00:00
parent 7726b26cd3
commit 04bf04db4d
6 changed files with 108 additions and 18 deletions
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6
ChangeLog
View File

@ -1,3 +1,9 @@
2008-06-14 Matthew Allum <mallum@openedhand.com>
* README:
Make needed GL version 1.4, note GLES2 support, add some notes
for COGL.
2008-06-13 Emmanuele Bassi <ebassi@openedhand.com>
* configure.ac: Post release bump to 0.7.1.

13
README
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@ -9,7 +9,7 @@ Clutter currently requires:
* GLib >= 2.14.0
* GdkPixbuf
* Pango >= 1.18
* OpenGL >= 1.2 or OpenGL ES 1.1
* OpenGL >= 1.4, OpenGL ES 1.1 or OpenGL ES 2.0
* GLX, SDL, WGL or an EGL Implementation
The official website is:
@ -165,6 +165,10 @@ wanting to port to newer releases (See NEWS for general new feature info).
Release Notes for Clutter 0.8
-------------------------------
* The COGL GL wrapper API has been overhauled and now contains many
new features including new texture abstractions, path based
primitive drawing, improved FBO support and is now fully documented.
* The size negotiation API has been completely changed in order to allow
the creation of non-fixed layout managers. These functions have been
removed:
@ -205,11 +209,16 @@ Release Notes for Clutter 0.8
* Clutter now features support for multiple stages assuming supported
by the backend. See test-multistage.c for example of usage. This
does not change the automatic creation of the default stage.
A single GL context is used across all stages meaning GL resources
are shared.
* There is now an experimental native iPod Touch/iPhone backend.
* There is now an experimental native iPod Touch/iPhone UIKit backend.
* There is now an experimental native Win32 WGL backend.
* COGL (and therefor Clutter) now optionally features initial support for
OpenGL ES 2.0
* Some more focused timeline unit tests have been added and some tweaks to
timeline semantics were made; E.g. For a 10 frame timeline here are some
points about the semantics:

2
clutter/cogl/gl/cogl-defines.h.in
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@ -26,6 +26,8 @@
#ifndef __COGL_DEFINES_H__
#define __COGL_DEFINES_H__
#define GL_GLEXT_PROTOTYPES 1
#include <@CLUTTER_GL_HEADER@>
G_BEGIN_DECLS

71
clutter/cogl/gl/cogl-texture.c
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@ -38,6 +38,9 @@
#include <string.h>
#include <stdlib.h>
// #define HAVE_PBOS 1
#include <GL/glext.h>
/*
#define COGL_DEBUG 1
@ -244,7 +247,39 @@ _cogl_texture_upload_to_gl (CoglTexture *tex)
x_span->start,
y_span->start,
FALSE);
{
#if HAVE_PBOS
void *io_mem;
GLuint buf;
buf = g_array_index (tex->slice_buf_handles, GLuint,
y * tex->slice_x_spans->len + x);
glBindBuffer (GL_PIXEL_UNPACK_BUFFER_ARB, buf);
glBufferData (GL_PIXEL_UNPACK_BUFFER_ARB,
tex->bitmap.height * tex->bitmap.rowstride,
NULL,
GL_STREAM_DRAW);
io_mem = glMapBuffer (GL_PIXEL_UNPACK_BUFFER_ARB, GL_WRITE_ONLY);
g_assert (io_mem);
memcpy (io_mem, tex->bitmap.data,
tex->bitmap.height * tex->bitmap.rowstride);
GE( glUnmapBuffer(GL_PIXEL_UNPACK_BUFFER_ARB) );
GE( glBindTexture (tex->gl_target, gl_handle) );
GE( glTexSubImage2D (tex->gl_target, 0, 0, 0,
x_span->size - x_span->waste,
y_span->size - y_span->waste,
tex->gl_format, tex->gl_type,
(char *)NULL) );
GE( glBindBuffer(GL_PIXEL_UNPACK_BUFFER_ARB, 0) );
#else
/* Upload new image data */
GE( glBindTexture (tex->gl_target, gl_handle) );
@ -253,6 +288,8 @@ _cogl_texture_upload_to_gl (CoglTexture *tex)
y_span->size - y_span->waste,
tex->gl_format, tex->gl_type,
tex->bitmap.data) );
#endif
}
}
}
@ -568,6 +605,9 @@ _cogl_texture_slices_create (CoglTexture *tex)
gint max_width;
gint max_height;
GLuint *gl_handles;
#if HAVE_PBOS
GLuint *buf_handles;
#endif
gint n_x_slices;
gint n_y_slices;
gint n_slices;
@ -704,6 +744,16 @@ _cogl_texture_slices_create (CoglTexture *tex)
GE( glGenTextures (n_slices, gl_handles) );
#if HAVE_PBOS
tex->slice_buf_handles = g_array_sized_new (FALSE, FALSE,
sizeof (GLuint),
n_slices);
g_array_set_size (tex->slice_buf_handles, n_slices);
buf_handles = (GLuint*) tex->slice_buf_handles->data;
GE( glGenBuffers(n_slices, buf_handles) );
#endif
/* Init each GL texture object */
for (y = 0; y < n_y_slices; ++y)
@ -712,6 +762,9 @@ _cogl_texture_slices_create (CoglTexture *tex)
for (x = 0; x < n_x_slices; ++x)
{
#if HAVE_PBOS
glBindBuffer(GL_PIXEL_UNPACK_BUFFER_ARB, 0);
#endif
x_span = &g_array_index (tex->slice_x_spans, CoglTexSliceSpan, x);
#if COGL_DEBUG
@ -721,9 +774,12 @@ _cogl_texture_slices_create (CoglTexture *tex)
y_span->size - y_span->waste);
#endif
/* Setup texture parameters */
GE( glBindTexture (tex->gl_target, gl_handles[y * n_x_slices + x]) );
GE( glTexParameteri (tex->gl_target, GL_TEXTURE_MAG_FILTER, tex->mag_filter) );
GE( glTexParameteri (tex->gl_target, GL_TEXTURE_MIN_FILTER, tex->min_filter) );
GE( glBindTexture (tex->gl_target,
gl_handles[y * n_x_slices + x]) );
GE( glTexParameteri (tex->gl_target,
GL_TEXTURE_MAG_FILTER, tex->mag_filter) );
GE( glTexParameteri (tex->gl_target,
GL_TEXTURE_MIN_FILTER, tex->min_filter) );
GE( glTexParameteri (tex->gl_target, GL_TEXTURE_WRAP_S,
tex->wrap_mode) );
@ -768,6 +824,15 @@ _cogl_texture_slices_free (CoglTexture *tex)
g_array_free (tex->slice_gl_handles, TRUE);
}
#if HAVE_PBOS
if (tex->slice_buf_handles != NULL)
{
glDeleteBuffers(tex->slice_buf_handles->len,
(GLuint*) tex->slice_buf_handles->data);
}
#endif
}
static gboolean

1
clutter/cogl/gl/cogl-texture.h
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@ -51,6 +51,7 @@ struct _CoglTexture
GArray *slice_x_spans;
GArray *slice_y_spans;
GArray *slice_gl_handles;
GArray *slice_buf_handles;
gint max_waste;
COGLenum min_filter;
COGLenum mag_filter;

31
tests/test-textures.c
View File

@ -59,6 +59,8 @@ main (int argc, char *argv[])
ClutterActor *texture;
ClutterActor *stage;
gint i, j;
guchar *pixels;
int rowstride;
clutter_init (&argc, &argv);
@ -67,23 +69,27 @@ main (int argc, char *argv[])
SPIN();
pixels = make_rgba_data (1000, 1000, 4, TRUE, &rowstride);
texture = clutter_texture_new ();
clutter_container_add (CLUTTER_CONTAINER (stage), texture, NULL);
clutter_actor_set_size (texture, 400, 400);
clutter_actor_show (texture);
for (i=100; i<=5000; i += 100)
for (j=0; j<4; j++)
{
const int width = i+j;
const int height = i+j;
const int width = 1000;
const int height = 1000;
const gboolean has_alpha = TRUE;
const int bpp = has_alpha ? 4 : 3;
int rowstride;
guchar *pixels;
pixels = make_rgba_data (width, height, bpp, has_alpha, &rowstride);
if (!pixels)
g_error("No memory for %ix%i RGBA data failed", width, height);
printf("o %ix%i texture... ", width, height);
texture = clutter_texture_new ();
if (!clutter_texture_set_from_rgb_data (CLUTTER_TEXTURE (texture),
pixels,
has_alpha,
@ -93,21 +99,22 @@ main (int argc, char *argv[])
bpp,
0, NULL))
g_error("texture creation failed");
g_free(pixels);
// g_free(pixels);
printf("uploaded to texture...\n");
clutter_container_add (CLUTTER_CONTAINER (stage), texture, NULL);
clutter_actor_set_size (texture, 400, 400);
clutter_actor_show (texture);
/* Hide & show to unreaise then realise the texture */
clutter_actor_hide (texture);
clutter_actor_show (texture);
// clutter_actor_unrealize (texture);
SPIN();
clutter_container_remove (CLUTTER_CONTAINER (stage), texture, NULL);
// clutter_actor_destroy (texture);
// clutter_container_remove (CLUTTER_CONTAINER (stage), texture, NULL);
}
return EXIT_SUCCESS;