static void init_pixbuf_texture (GstGLContext * context, gpointer data) { GstGLDifferenceMatte *differencematte = GST_GL_DIFFERENCEMATTE (data); GstGLFilter *filter = GST_GL_FILTER (data); GstGLFuncs *gl = GST_GL_BASE_FILTER (filter)->context->gl_vtable; gl->DeleteTextures (1, &differencematte->newbgtexture); gl->GenTextures (1, &differencematte->newbgtexture); gl->BindTexture (GL_TEXTURE_2D, differencematte->newbgtexture); gl->TexImage2D (GL_TEXTURE_2D, 0, GL_RGBA, (gint) differencematte->pbuf_width, (gint) differencematte->pbuf_height, 0, GL_RGBA, GL_UNSIGNED_BYTE, differencematte->pixbuf); gl->TexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); gl->TexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); gl->TexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); gl->TexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); if (differencematte->savedbgtexture == 0) { gl->GenTextures (1, &differencematte->savedbgtexture); gl->BindTexture (GL_TEXTURE_2D, differencematte->savedbgtexture); gl->TexImage2D (GL_TEXTURE_2D, 0, GL_RGBA8, GST_VIDEO_INFO_WIDTH (&filter->out_info), GST_VIDEO_INFO_HEIGHT (&filter->out_info), 0, GL_RGBA, GL_UNSIGNED_BYTE, NULL); gl->TexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); gl->TexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); gl->TexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); gl->TexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); } }
/* init resources that need a gl context */ static void gst_gl_effects_init_gl_resources (GstGLFilter * filter) { GstGLEffects *effects = GST_GL_EFFECTS (filter); GstGLFuncs *gl = filter->context->gl_vtable; gint i = 0; for (i = 0; i < NEEDED_TEXTURES; i++) { gl->GenTextures (1, &effects->midtexture[i]); gl->BindTexture (GL_TEXTURE_2D, effects->midtexture[i]); gl->TexImage2D (GL_TEXTURE_2D, 0, GL_RGBA8, GST_VIDEO_INFO_WIDTH (&filter->out_info), GST_VIDEO_INFO_HEIGHT (&filter->out_info), 0, GL_RGBA, GL_UNSIGNED_BYTE, NULL); gl->TexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); gl->TexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); gl->TexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); gl->TexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); } }
void gst_gl_effects_luma_to_curve (GstGLEffects * effects, GstGLEffectsCurve curve, gint curve_index, gint width, gint height, GLuint texture) { GstGLShader *shader; GstGLFilter *filter = GST_GL_FILTER (effects); GstGLContext *context = filter->context; GstGLFuncs *gl = context->gl_vtable; shader = g_hash_table_lookup (effects->shaderstable, "lumamap0"); if (!shader) { shader = gst_gl_shader_new (context); g_hash_table_insert (effects->shaderstable, "lumamap0", shader); } if (!gst_gl_shader_compile_and_check (shader, luma_to_curve_fragment_source, GST_GL_SHADER_FRAGMENT_SOURCE)) { gst_gl_context_set_error (context, "Failed to initialize luma to curve shader"); GST_ELEMENT_ERROR (effects, RESOURCE, NOT_FOUND, ("%s", gst_gl_context_get_error ()), (NULL)); return; } gl->MatrixMode (GL_PROJECTION); gl->LoadIdentity (); gst_gl_shader_use (shader); if (effects->curve[curve_index] == 0) { /* this parameters are needed to have a right, predictable, mapping */ gl->GenTextures (1, &effects->curve[curve_index]); gl->Enable (GL_TEXTURE_1D); gl->BindTexture (GL_TEXTURE_1D, effects->curve[curve_index]); gl->TexParameteri (GL_TEXTURE_1D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); gl->TexParameteri (GL_TEXTURE_1D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); gl->TexParameteri (GL_TEXTURE_1D, GL_TEXTURE_WRAP_S, GL_CLAMP); gl->TexParameteri (GL_TEXTURE_1D, GL_TEXTURE_WRAP_T, GL_CLAMP); gl->TexImage1D (GL_TEXTURE_1D, 0, curve.bytes_per_pixel, curve.width, 0, GL_RGB, GL_UNSIGNED_BYTE, curve.pixel_data); gl->Disable (GL_TEXTURE_1D); } gl->ActiveTexture (GL_TEXTURE2); gl->Enable (GL_TEXTURE_2D); gl->BindTexture (GL_TEXTURE_2D, texture); gst_gl_shader_set_uniform_1i (shader, "tex", 2); gl->Disable (GL_TEXTURE_2D); gl->ActiveTexture (GL_TEXTURE1); gl->Enable (GL_TEXTURE_1D); gl->BindTexture (GL_TEXTURE_1D, effects->curve[curve_index]); gst_gl_shader_set_uniform_1i (shader, "curve", 1); gl->Disable (GL_TEXTURE_1D); gst_gl_filter_draw_texture (filter, texture, width, height); }
static gboolean _2d_texture_renderer_init_fbo (GstAmc2DTextureRenderer * renderer) { GstGLFuncs *gl; GLuint fake_texture = 0; guint out_width, out_height; out_width = GST_VIDEO_INFO_WIDTH (&renderer->info); out_height = GST_VIDEO_INFO_HEIGHT (&renderer->info); gl = renderer->context->gl_vtable; if (!gl->GenFramebuffers) { /* turn off the pipeline because Frame buffer object is a not present */ gst_gl_context_set_error (renderer->context, "Context, EXT_framebuffer_object supported: no"); return FALSE; } GST_INFO ("Context, EXT_framebuffer_object supported: yes"); /* setup FBO */ gl->GenFramebuffers (1, &renderer->fbo); gl->BindFramebuffer (GL_FRAMEBUFFER, renderer->fbo); /* setup the render buffer for depth */ gl->GenRenderbuffers (1, &renderer->depth_buffer); gl->BindRenderbuffer (GL_RENDERBUFFER, renderer->depth_buffer); gl->RenderbufferStorage (GL_RENDERBUFFER, GL_DEPTH_COMPONENT16, out_width, out_height); /* a fake texture is attached to the render FBO (cannot init without it) */ gl->GenTextures (1, &fake_texture); gl->BindTexture (GL_TEXTURE_2D, fake_texture); gl->TexImage2D (GL_TEXTURE_2D, 0, GL_RGBA8, out_width, out_height, 0, GL_RGBA, GL_UNSIGNED_BYTE, NULL); gl->TexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); gl->TexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); gl->TexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); gl->TexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); /* attach the texture to the FBO to renderer to */ gl->FramebufferTexture2D (GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, fake_texture, 0); /* attach the depth render buffer to the FBO */ gl->FramebufferRenderbuffer (GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, renderer->depth_buffer); if (!gst_gl_context_check_framebuffer_status (renderer->context)) { gst_gl_context_set_error (renderer->context, "GL framebuffer status incomplete"); return FALSE; } /* unbind the FBO */ gl->BindFramebuffer (GL_FRAMEBUFFER, 0); gl->DeleteTextures (1, &fake_texture); return TRUE; }