static void
gst_gl_filterblur_reset_resources (GstGLFilter * filter)
{
GstGLFilterBlur *filterblur = GST_GL_FILTERBLUR (filter);
glDeleteTextures (1, &filterblur->midtexture);
}
static void
gst_gl_filter_filterblur_reset (GstGLFilter * filter)
{
GstGLFilterBlur *filterblur = GST_GL_FILTERBLUR (filter);
//blocking call, wait the opengl thread has destroyed the shader
gst_gl_display_del_shader (filter->display, filterblur->shader0);
//blocking call, wait the opengl thread has destroyed the shader
gst_gl_display_del_shader (filter->display, filterblur->shader1);
}
static void
gst_gl_filterblur_init_shader (GstGLFilter * filter)
{
GstGLFilterBlur *blur_filter = GST_GL_FILTERBLUR (filter);
//blocking call, wait the opengl thread has compiled the shader
gst_gl_display_gen_shader (filter->display, 0, hconv7_fragment_source,
&blur_filter->shader0);
//blocking call, wait the opengl thread has compiled the shader
gst_gl_display_gen_shader (filter->display, 0, vconv7_fragment_source,
&blur_filter->shader1);
}
static gboolean
gst_gl_filterblur_filter (GstGLFilter * filter, GstGLBuffer * inbuf,
GstGLBuffer * outbuf)
{
GstGLFilterBlur *filterblur = GST_GL_FILTERBLUR (filter);
gst_gl_filter_render_to_target (filter, inbuf->texture,
filterblur->midtexture, gst_gl_filterblur_hcallback, filterblur);
gst_gl_filter_render_to_target (filter, filterblur->midtexture,
outbuf->texture, gst_gl_filterblur_vcallback, filterblur);
return TRUE;
}
static void
gst_gl_filterblur_init_resources (GstGLFilter * filter)
{
GstGLFilterBlur *filterblur = GST_GL_FILTERBLUR (filter);
glGenTextures (1, &filterblur->midtexture);
glBindTexture (GL_TEXTURE_RECTANGLE_ARB, filterblur->midtexture);
glTexImage2D (GL_TEXTURE_RECTANGLE_ARB, 0, GL_RGBA8,
filter->width, filter->height, 0, GL_RGBA, GL_UNSIGNED_BYTE, NULL);
glTexParameteri (GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri (GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri (GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_WRAP_S,
GL_CLAMP_TO_EDGE);
glTexParameteri (GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_WRAP_T,
GL_CLAMP_TO_EDGE);
}
static gboolean
gst_gl_filterblur_init_shader (GstGLFilter * filter)
{
GstGLFilterBlur *blur_filter = GST_GL_FILTERBLUR (filter);
//blocking call, wait the opengl thread has compiled the shader
if (!gst_gl_display_gen_shader (filter->display, 0, hconv7_fragment_source,
&blur_filter->shader0))
return FALSE;
//blocking call, wait the opengl thread has compiled the shader
if (!gst_gl_display_gen_shader (filter->display, 0, vconv7_fragment_source,
&blur_filter->shader1))
return FALSE;
return TRUE;
}
static void
gst_gl_filterblur_vcallback (gint width, gint height, guint texture,
gpointer stuff)
{
GstGLFilter *filter = GST_GL_FILTER (stuff);
GstGLFilterBlur *filterblur = GST_GL_FILTERBLUR (filter);
glMatrixMode (GL_PROJECTION);
glLoadIdentity ();
gst_gl_shader_use (filterblur->shader1);
glActiveTexture (GL_TEXTURE1);
glEnable (GL_TEXTURE_RECTANGLE_ARB);
glBindTexture (GL_TEXTURE_RECTANGLE_ARB, texture);
glDisable (GL_TEXTURE_RECTANGLE_ARB);
gst_gl_shader_set_uniform_1i (filterblur->shader1, "tex", 1);
gst_gl_shader_set_uniform_1fv (filterblur->shader1, "kernel", 7,
filterblur->gauss_kernel);
gst_gl_filter_draw_texture (filter, texture);
}
