/** * Implementation of up or downsampling for window-system MSAA miptrees. */ void brw_meta_updownsample(struct brw_context *brw, struct intel_mipmap_tree *src_mt, struct intel_mipmap_tree *dst_mt) { struct gl_context *ctx = &brw->ctx; GLuint fbos[2], src_rbo, dst_rbo, src_fbo, dst_fbo; GLenum drawbuffer; GLbitfield attachment, blit_bit; if (_mesa_get_format_base_format(src_mt->format) == GL_DEPTH_COMPONENT || _mesa_get_format_base_format(src_mt->format) == GL_DEPTH_STENCIL) { attachment = GL_DEPTH_ATTACHMENT; drawbuffer = GL_NONE; blit_bit = GL_DEPTH_BUFFER_BIT; } else { attachment = GL_COLOR_ATTACHMENT0; drawbuffer = GL_COLOR_ATTACHMENT0; blit_bit = GL_COLOR_BUFFER_BIT; } brw_emit_mi_flush(brw); _mesa_meta_begin(ctx, MESA_META_ALL); _mesa_GenFramebuffers(2, fbos); src_rbo = brw_get_rb_for_slice(brw, src_mt, 0, 0, false); dst_rbo = brw_get_rb_for_slice(brw, dst_mt, 0, 0, false); src_fbo = fbos[0]; dst_fbo = fbos[1]; _mesa_BindFramebuffer(GL_READ_FRAMEBUFFER, src_fbo); _mesa_FramebufferRenderbuffer(GL_READ_FRAMEBUFFER, attachment, GL_RENDERBUFFER, src_rbo); _mesa_ReadBuffer(drawbuffer); _mesa_BindFramebuffer(GL_DRAW_FRAMEBUFFER, dst_fbo); _mesa_FramebufferRenderbuffer(GL_DRAW_FRAMEBUFFER, attachment, GL_RENDERBUFFER, dst_rbo); _mesa_DrawBuffer(drawbuffer); _mesa_BlitFramebuffer(0, 0, src_mt->logical_width0, src_mt->logical_height0, 0, 0, dst_mt->logical_width0, dst_mt->logical_height0, blit_bit, GL_NEAREST); _mesa_DeleteRenderbuffers(1, &src_rbo); _mesa_DeleteRenderbuffers(1, &dst_rbo); _mesa_DeleteFramebuffers(2, fbos); _mesa_meta_end(ctx); brw_emit_mi_flush(brw); }
void brw_meta_resolve_color(struct brw_context *brw, struct intel_mipmap_tree *mt) { struct gl_context *ctx = &brw->ctx; GLuint fbo, rbo; struct rect rect; intel_batchbuffer_emit_mi_flush(brw); _mesa_meta_begin(ctx, MESA_META_ALL); _mesa_GenFramebuffers(1, &fbo); rbo = brw_get_rb_for_slice(brw, mt, 0, 0, false); _mesa_BindFramebuffer(GL_DRAW_FRAMEBUFFER, fbo); _mesa_FramebufferRenderbuffer(GL_DRAW_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_RENDERBUFFER, rbo); _mesa_DrawBuffer(GL_COLOR_ATTACHMENT0); brw_fast_clear_init(brw); use_rectlist(brw, true); brw_bind_rep_write_shader(brw, (float *) fast_clear_color); set_fast_clear_op(brw, GEN7_PS_RENDER_TARGET_RESOLVE_ENABLE); mt->fast_clear_state = INTEL_FAST_CLEAR_STATE_RESOLVED; get_resolve_rect(brw, mt, &rect); brw_draw_rectlist(ctx, &rect, 1); set_fast_clear_op(brw, 0); use_rectlist(brw, false); _mesa_DeleteRenderbuffers(1, &rbo); _mesa_DeleteFramebuffers(1, &fbo); _mesa_meta_end(ctx); /* We're typically called from intel_update_state() and we're supposed to * return with the state all updated to what it was before * brw_meta_resolve_color() was called. The meta rendering will have * messed up the state and we need to call _mesa_update_state() again to * get back to where we were supposed to be when resolve was called. */ if (ctx->NewState) _mesa_update_state(ctx); }