From 0508d9504aa71cd5032ec27a8ab1127037f2df78 Mon Sep 17 00:00:00 2001 From: Timothy Arceri Date: Thu, 24 Dec 2015 09:50:59 +1100 Subject: [PATCH] glsl: only add outward facing varyings to resourse list for SSO An SSO program can have multiple stages and we only want to add the externally facing varyings. The current code was adding both the packed inputs and outputs for the first and last stage of each program. Reviewed-by: Anuj Phogat Reviewed-by: Edward O'Callaghan --- src/glsl/linker.cpp | 17 ++++++++++------- 1 file changed, 10 insertions(+), 7 deletions(-) diff --git a/src/glsl/linker.cpp b/src/glsl/linker.cpp index a6e81b4..acc63ae 100644 --- a/src/glsl/linker.cpp +++ b/src/glsl/linker.cpp @@ -3433,7 +3433,7 @@ add_interface_variables(struct gl_shader_program *shProg, } static bool -add_packed_varyings(struct gl_shader_program *shProg, int stage) +add_packed_varyings(struct gl_shader_program *shProg, int stage, GLenum type) { struct gl_shader *sh = shProg->_LinkedShaders[stage]; GLenum iface; @@ -3454,10 +3454,13 @@ add_packed_varyings(struct gl_shader_program *shProg, int stage) default: unreachable("unexpected type"); } - if (!add_program_resource(shProg, iface, var, - build_stageref(shProg, var->name, - var->data.mode))) - return false; + + if (type == iface) { + if (!add_program_resource(shProg, iface, var, + build_stageref(shProg, var->name, + var->data.mode))) + return false; + } } } return true; @@ -3724,9 +3727,9 @@ build_program_resource_list(struct gl_shader_program *shProg) /* Program interface needs to expose varyings in case of SSO. */ if (shProg->SeparateShader) { - if (!add_packed_varyings(shProg, input_stage)) + if (!add_packed_varyings(shProg, input_stage, GL_PROGRAM_INPUT)) return; - if (!add_packed_varyings(shProg, output_stage)) + if (!add_packed_varyings(shProg, output_stage, GL_PROGRAM_OUTPUT)) return; } -- 2.7.4