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[202/906] use fixed opengl pipeline for glpixbufoverlay (any drawback?)

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This commit is contained in:
Filippo Argiolas 2008-08-20 09:26:46 +02:00 committed by Matthew Waters
parent 9a25ffce4c
commit 52a7e2dc6b
1 changed files with 25 additions and 27 deletions
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52
gst/gl/gstglpixbufoverlay.c
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@ -37,8 +37,6 @@ struct _GstGLPixbufOverlay
{
GstGLFilter filter;
GstGLShader *shader;
gchar *location;
gboolean pbuf_has_changed;
@ -97,13 +95,7 @@ enum
static void
gst_gl_pixbufoverlay_init_gl_resources (GstGLFilter *filter)
{
GstGLPixbufOverlay *pixbufoverlay = GST_GL_PIXBUFOVERLAY (filter);
pixbufoverlay->shader = gst_gl_shader_new ();
g_return_if_fail (
gst_gl_shader_compile_and_check (pixbufoverlay->shader, interpolate_fragment_source,
GST_GL_SHADER_FRAGMENT_SOURCE));
// GstGLPixbufOverlay *pixbufoverlay = GST_GL_PIXBUFOVERLAY (filter);
}
/* free resources that need a gl context */
@ -113,7 +105,6 @@ gst_gl_pixbufoverlay_reset_gl_resources (GstGLFilter *filter)
GstGLPixbufOverlay *pixbufoverlay = GST_GL_PIXBUFOVERLAY (filter);
glDeleteTextures (1, &pixbufoverlay->pbuftexture);
g_object_unref (pixbufoverlay->shader);
}
static void
@ -168,13 +159,36 @@ gst_gl_pixbufoverlay_draw_texture (GstGLPixbufOverlay * pixbufoverlay, GLuint te
glVertex2f (-1.0, 1.0);
glEnd ();
if (pixbufoverlay->pbuftexture == 0) return;
glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
glEnable(GL_BLEND);
glEnable (GL_TEXTURE_RECTANGLE_ARB);
glBindTexture (GL_TEXTURE_RECTANGLE_ARB, pixbufoverlay->pbuftexture);
glBegin (GL_QUADS);
glTexCoord2f (0.0, 0.0);
glVertex2f (-1.0, -1.0);
glTexCoord2f ((gfloat)filter->width, 0.0);
glVertex2f (1.0, -1.0);
glTexCoord2f ((gfloat)filter->width, (gfloat)filter->height);
glVertex2f (1.0, 1.0);
glTexCoord2f (0.0, (gfloat)filter->height);
glVertex2f (-1.0, 1.0);
glEnd ();
glFlush ();
}
static void
gst_gl_pixbufoverlay_init (GstGLPixbufOverlay * pixbufoverlay,
GstGLPixbufOverlayClass * klass)
{
pixbufoverlay->shader = NULL;
pixbufoverlay->location = NULL;
pixbufoverlay->pixbuf = NULL;
pixbufoverlay->pbuftexture = 0;
@ -235,22 +249,6 @@ gst_gl_pixbufoverlay_callback (gint width, gint height, guint texture, gpointer
glMatrixMode (GL_PROJECTION);
glLoadIdentity ();
gst_gl_shader_use (pixbufoverlay->shader);
glActiveTexture (GL_TEXTURE0);
glEnable (GL_TEXTURE_RECTANGLE_ARB);
glBindTexture (GL_TEXTURE_RECTANGLE_ARB, texture);
glDisable(GL_TEXTURE_RECTANGLE_ARB);
gst_gl_shader_set_uniform_1i (pixbufoverlay->shader, "base", 0);
glActiveTexture (GL_TEXTURE3);
glEnable (GL_TEXTURE_RECTANGLE_ARB);
glBindTexture (GL_TEXTURE_RECTANGLE_ARB, pixbufoverlay->pbuftexture);
glDisable (GL_TEXTURE_RECTANGLE_ARB);
gst_gl_shader_set_uniform_1i (pixbufoverlay->shader, "blend", 3);
gst_gl_pixbufoverlay_draw_texture (pixbufoverlay, texture);
}