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277 lines
7.4 KiB
C
277 lines
7.4 KiB
C
#include <glib.h>
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#include <gmodule.h>
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#include <stdlib.h>
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#include <clutter/clutter.h>
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#include <cogl/cogl.h>
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#ifndef GL_UNPACK_ALIGNMENT
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#define GL_UNPACK_ALIGNMENT 0x0CF5
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#endif
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#ifndef GL_TEXTURE_BINDING_2D
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#define GL_TEXTURE_BINDING_2D 0x8069
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#endif
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#ifndef GL_TEXTURE_2D
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#define GL_TEXTURE_2D 0x0DE1
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#endif
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#ifndef GL_RGB
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#define GL_RGB 0x1907
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#endif
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#ifndef GL_UNSIGNED_BYTE
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#define GL_UNSIGNED_BYTE 0x1401
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#endif
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#ifndef GL_TEXTURE_MAG_FILTER
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#define GL_TEXTURE_MAG_FILTER 0x2800
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#endif
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#ifndef GL_LINEAR
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#define GL_LINEAR 0x1208
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#endif
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#ifndef GL_TEXTURE_MIN_FILTER
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#define GL_TEXTURE_MIN_FILTER 0x2801
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#endif
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/* Coglbox declaration
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*--------------------------------------------------*/
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G_BEGIN_DECLS
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#define TEST_TYPE_COGLBOX test_coglbox_get_type()
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#define TEST_COGLBOX(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST ((obj), \
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TEST_TYPE_COGLBOX, TestCoglboxClass))
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#define TEST_COGLBOX_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST ((klass), \
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TEST_TYPE_COGLBOX, TestCoglboxClass))
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#define TEST_IS_COGLBOX(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE ((obj), \
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TEST_TYPE_COGLBOX))
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#define TEST_IS_COGLBOX_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_TYPE ((klass), \
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TEST_TYPE_COGLBOX))
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#define TEST_COGLBOX_GET_CLASS(obj) \
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(G_TYPE_INSTANCE_GET_CLASS ((obj), \
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TEST_TYPE_COGLBOX, TestCoglboxClass))
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typedef struct _TestCoglbox TestCoglbox;
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typedef struct _TestCoglboxClass TestCoglboxClass;
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typedef struct _TestCoglboxPrivate TestCoglboxPrivate;
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const char *
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test_cogl_tex_foreign_describe (void);
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struct _TestCoglbox
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{
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ClutterActor parent;
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/*< private >*/
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TestCoglboxPrivate *priv;
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};
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struct _TestCoglboxClass
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{
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ClutterActorClass parent_class;
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/* padding for future expansion */
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void (*_test_coglbox1) (void);
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void (*_test_coglbox2) (void);
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void (*_test_coglbox3) (void);
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void (*_test_coglbox4) (void);
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};
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static GType test_coglbox_get_type (void) G_GNUC_CONST;
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G_END_DECLS
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/* Coglbox private declaration
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*--------------------------------------------------*/
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struct _TestCoglboxPrivate
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{
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guint gl_handle;
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CoglHandle cogl_handle;
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void
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(* glGetIntegerv) (guint pname, int *params);
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void
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(* glPixelStorei) (guint pname, int param);
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void
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(* glTexParameteri) (guint target, guint pname, int param);
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void
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(* glTexImage2D) (guint target, int level,
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int internalFormat,
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int width, int height,
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int border, guint format, guint type,
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const void *pixels);
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void
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(* glGenTextures) (int n, guint *textures);
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void
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(* glDeleteTextures) (int n, const guint *textures);
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void
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(* glBindTexture) (guint target, guint texture);
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};
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G_DEFINE_TYPE_WITH_PRIVATE (TestCoglbox, test_coglbox, CLUTTER_TYPE_ACTOR);
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#define TEST_COGLBOX_GET_PRIVATE(obj) \
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(G_TYPE_INSTANCE_GET_PRIVATE ((obj), TEST_TYPE_COGLBOX, TestCoglboxPrivate))
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int
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test_cogl_tex_foreign_main (int argc, char *argv[]);
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/* Coglbox implementation
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*--------------------------------------------------*/
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static void
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test_coglbox_paint(ClutterActor *self)
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{
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TestCoglboxPrivate *priv = TEST_COGLBOX_GET_PRIVATE (self);
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gfloat texcoords[4] = { 0.3f, 0.3f, 0.7f, 0.7f };
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cogl_set_source_color4ub (0x66, 0x66, 0xdd, 0xff);
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cogl_rectangle (0,0,400,400);
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cogl_push_matrix ();
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cogl_translate (100,100,0);
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cogl_set_source_texture (priv->cogl_handle);
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cogl_rectangle_with_texture_coords (0, 0, 200, 200,
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texcoords[0], texcoords[1],
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texcoords[2], texcoords[3]);
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cogl_pop_matrix();
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}
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static void
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test_coglbox_finalize (GObject *object)
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{
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G_OBJECT_CLASS (test_coglbox_parent_class)->finalize (object);
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}
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static void
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test_coglbox_dispose (GObject *object)
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{
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TestCoglboxPrivate *priv;
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priv = TEST_COGLBOX_GET_PRIVATE (object);
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cogl_handle_unref (priv->cogl_handle);
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priv->glDeleteTextures (1, &priv->gl_handle);
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G_OBJECT_CLASS (test_coglbox_parent_class)->dispose (object);
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}
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static void
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test_coglbox_init (TestCoglbox *self)
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{
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TestCoglboxPrivate *priv;
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guchar data[12];
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int prev_unpack_alignment;
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int prev_2d_texture_binding;
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self->priv = priv = TEST_COGLBOX_GET_PRIVATE(self);
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/* Prepare a 2x2 pixels texture */
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data[0] = 255; data[1] = 0; data[2] = 0;
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data[3] = 0; data[4] = 255; data[5] = 0;
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data[6] = 0; data[7] = 0; data[8] = 255;
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data[9] = 0; data[10] = 0; data[11] = 0;
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priv->glGetIntegerv = (void *) cogl_get_proc_address ("glGetIntegerv");
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priv->glPixelStorei = (void *) cogl_get_proc_address ("glPixelStorei");
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priv->glTexParameteri = (void *) cogl_get_proc_address ("glTexParameteri");
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priv->glTexImage2D = (void *) cogl_get_proc_address ("glTexImage2D");
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priv->glGenTextures = (void *) cogl_get_proc_address ("glGenTextures");
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priv->glDeleteTextures = (void *) cogl_get_proc_address ("glDeleteTextures");
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priv->glBindTexture = (void *) cogl_get_proc_address ("glBindTexture");
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/* We are about to use OpenGL directly to create a TEXTURE_2D
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* texture so we need to save the state that we modify so we can
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* restore it afterwards and be sure not to interfere with any state
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* caching that Cogl may do internally.
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*/
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priv->glGetIntegerv (GL_UNPACK_ALIGNMENT, &prev_unpack_alignment);
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priv->glGetIntegerv (GL_TEXTURE_BINDING_2D, &prev_2d_texture_binding);
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priv->glGenTextures (1, &priv->gl_handle);
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priv->glBindTexture (GL_TEXTURE_2D, priv->gl_handle);
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priv->glPixelStorei (GL_UNPACK_ALIGNMENT, 1);
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priv->glTexImage2D (GL_TEXTURE_2D, 0, GL_RGB,
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2, 2, 0, GL_RGB, GL_UNSIGNED_BYTE, data);
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/* Now restore the original GL state as Cogl had left it */
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priv->glPixelStorei (GL_UNPACK_ALIGNMENT, prev_unpack_alignment);
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priv->glBindTexture (GL_TEXTURE_2D, prev_2d_texture_binding);
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priv->glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
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priv->glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
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/* Create texture from foreign */
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priv->cogl_handle =
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cogl_texture_new_from_foreign (priv->gl_handle,
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GL_TEXTURE_2D,
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2, 2, 0, 0,
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COGL_PIXEL_FORMAT_RGB_888);
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if (priv->cogl_handle == COGL_INVALID_HANDLE)
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{
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printf ("Failed creating texture from foreign!\n");
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return;
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}
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}
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static void
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test_coglbox_class_init (TestCoglboxClass *klass)
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{
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GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
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ClutterActorClass *actor_class = CLUTTER_ACTOR_CLASS (klass);
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gobject_class->finalize = test_coglbox_finalize;
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gobject_class->dispose = test_coglbox_dispose;
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actor_class->paint = test_coglbox_paint;
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}
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static ClutterActor*
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test_coglbox_new (void)
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{
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return g_object_new (TEST_TYPE_COGLBOX, NULL);
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}
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G_MODULE_EXPORT int
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test_cogl_tex_foreign_main (int argc, char *argv[])
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{
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ClutterActor *stage;
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ClutterActor *coglbox;
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if (clutter_init (&argc, &argv) != CLUTTER_INIT_SUCCESS)
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return 1;
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/* Stage */
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stage = clutter_stage_new ();
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clutter_actor_set_size (stage, 400, 400);
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clutter_stage_set_title (CLUTTER_STAGE (stage), "Cogl Foreign Textures");
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g_signal_connect (stage, "destroy", G_CALLBACK (clutter_main_quit), NULL);
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/* Cogl Box */
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coglbox = test_coglbox_new ();
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clutter_container_add_actor (CLUTTER_CONTAINER (stage), coglbox);
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clutter_actor_show_all (stage);
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clutter_main ();
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return 0;
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}
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G_MODULE_EXPORT const char *
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test_cogl_tex_foreign_describe (void)
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{
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return "Foreign textures support in Cogl.";
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}
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