+ ctx->NewState |= _NEW_BUFFERS;
+}
+
+void GLAPIENTRY
+_mesa_FramebufferParameteri(GLenum target, GLenum pname, GLint param)
+{
+ GET_CURRENT_CONTEXT(ctx);
+ struct gl_framebuffer *fb;
+
+ if (!ctx->Extensions.ARB_framebuffer_no_attachments) {
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "glFramebufferParameteriv not supported "
+ "(ARB_framebuffer_no_attachments not implemented)");
+ return;
+ }
+
+ fb = get_framebuffer_target(ctx, target);
+ if (!fb) {
+ _mesa_error(ctx, GL_INVALID_ENUM,
+ "glFramebufferParameteri(target=0x%x)", target);
+ return;
+ }
+
+ /* check framebuffer binding */
+ if (_mesa_is_winsys_fbo(fb)) {
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "glFramebufferParameteri");
+ return;
+ }
+
+ framebuffer_parameteri(ctx, fb, pname, param, "glFramebufferParameteri");
+}
+
+static void
+get_framebuffer_parameteriv(struct gl_context *ctx, struct gl_framebuffer *fb,
+ GLenum pname, GLint *params, const char *func)
+{
+ switch (pname) {
+ case GL_FRAMEBUFFER_DEFAULT_WIDTH:
+ *params = fb->DefaultGeometry.Width;
+ break;
+ case GL_FRAMEBUFFER_DEFAULT_HEIGHT:
+ *params = fb->DefaultGeometry.Height;
+ break;
+ case GL_FRAMEBUFFER_DEFAULT_LAYERS:
+ /*
+ * According to the OpenGL ES 3.1 specification section 9.2.3, the
+ * GL_FRAMEBUFFER_LAYERS parameter name is not supported.
+ */
+ if (_mesa_is_gles31(ctx) && !ctx->Extensions.OES_geometry_shader) {
+ _mesa_error(ctx, GL_INVALID_ENUM, "%s(pname=0x%x)", func, pname);
+ break;
+ }
+ *params = fb->DefaultGeometry.Layers;
+ break;
+ case GL_FRAMEBUFFER_DEFAULT_SAMPLES:
+ *params = fb->DefaultGeometry.NumSamples;
+ break;
+ case GL_FRAMEBUFFER_DEFAULT_FIXED_SAMPLE_LOCATIONS:
+ *params = fb->DefaultGeometry.FixedSampleLocations;
+ break;
+ default:
+ _mesa_error(ctx, GL_INVALID_ENUM,
+ "%s(pname=0x%x)", func, pname);
+ }
+}
+
+void GLAPIENTRY
+_mesa_GetFramebufferParameteriv(GLenum target, GLenum pname, GLint *params)
+{
+ GET_CURRENT_CONTEXT(ctx);
+ struct gl_framebuffer *fb;
+
+ if (!ctx->Extensions.ARB_framebuffer_no_attachments) {
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "glGetFramebufferParameteriv not supported "
+ "(ARB_framebuffer_no_attachments not implemented)");
+ return;
+ }
+
+ fb = get_framebuffer_target(ctx, target);
+ if (!fb) {
+ _mesa_error(ctx, GL_INVALID_ENUM,
+ "glGetFramebufferParameteriv(target=0x%x)", target);
+ return;
+ }
+
+ /* check framebuffer binding */
+ if (_mesa_is_winsys_fbo(fb)) {
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "glGetFramebufferParameteriv");
+ return;
+ }
+
+ get_framebuffer_parameteriv(ctx, fb, pname, params,
+ "glGetFramebufferParameteriv");
+}
+
+
+/**
+ * Remove the specified renderbuffer or texture from any attachment point in
+ * the framebuffer.
+ *
+ * \returns
+ * \c true if the renderbuffer was detached from an attachment point. \c
+ * false otherwise.
+ */
+bool
+_mesa_detach_renderbuffer(struct gl_context *ctx,
+ struct gl_framebuffer *fb,
+ const void *att)
+{
+ unsigned i;
+ bool progress = false;
+
+ for (i = 0; i < BUFFER_COUNT; i++) {
+ if (fb->Attachment[i].Texture == att
+ || fb->Attachment[i].Renderbuffer == att) {
+ remove_attachment(ctx, &fb->Attachment[i]);
+ progress = true;
+ }
+ }
+
+ /* Section 4.4.4 (Framebuffer Completeness), subsection "Whole Framebuffer
+ * Completeness," of the OpenGL 3.1 spec says:
+ *
+ * "Performing any of the following actions may change whether the
+ * framebuffer is considered complete or incomplete:
+ *
+ * ...
+ *
+ * - Deleting, with DeleteTextures or DeleteRenderbuffers, an object
+ * containing an image that is attached to a framebuffer object
+ * that is bound to the framebuffer."
+ */
+ if (progress)
+ invalidate_framebuffer(fb);
+
+ return progress;