diff options
| -rw-r--r-- | src/glsl/link_varyings.cpp | 35 | ||||
| -rw-r--r-- | src/glsl/link_varyings.h | 5 | ||||
| -rw-r--r-- | src/glsl/linker.cpp | 4 |
3 files changed, 33 insertions, 11 deletions
diff --git a/src/glsl/link_varyings.cpp b/src/glsl/link_varyings.cpp index 4fdbdc1..5abc612 100644 --- a/src/glsl/link_varyings.cpp +++ b/src/glsl/link_varyings.cpp @@ -1113,16 +1113,12 @@ assign_varying_locations(struct gl_context *ctx, } } - unsigned varying_vectors = 0; - if (consumer) { foreach_list(node, consumer->ir) { ir_variable *const var = ((ir_instruction *) node)->as_variable(); - if ((var == NULL) || (var->mode != ir_var_shader_in)) - continue; - - if (var->is_unmatched_generic_inout) { + if (var && var->mode == ir_var_shader_in && + var->is_unmatched_generic_inout) { if (prog->Version <= 120) { /* On page 25 (page 31 of the PDF) of the GLSL 1.20 spec: * @@ -1148,15 +1144,32 @@ assign_varying_locations(struct gl_context *ctx, * value is written by the previous stage. */ var->mode = ir_var_auto; - } else if (is_varying_var(consumer->Type, var)) { - /* The packing rules are used for vertex shader inputs are also - * used for fragment shader inputs. - */ - varying_vectors += count_attribute_slots(var->type); } } } + return true; +} + +bool +check_against_varying_limit(struct gl_context *ctx, + struct gl_shader_program *prog, + gl_shader *consumer) +{ + unsigned varying_vectors = 0; + + foreach_list(node, consumer->ir) { + ir_variable *const var = ((ir_instruction *) node)->as_variable(); + + if (var && var->mode == ir_var_shader_in && + is_varying_var(consumer->Type, var)) { + /* The packing rules used for vertex shader inputs are also + * used for fragment shader inputs. + */ + varying_vectors += count_attribute_slots(var->type); + } + } + if (ctx->API == API_OPENGLES2 || prog->IsES) { if (varying_vectors > ctx->Const.MaxVarying) { if (ctx->Const.GLSLSkipStrictMaxVaryingLimitCheck) { diff --git a/src/glsl/link_varyings.h b/src/glsl/link_varyings.h index ee1010a..daa9d79 100644 --- a/src/glsl/link_varyings.h +++ b/src/glsl/link_varyings.h @@ -232,4 +232,9 @@ assign_varying_locations(struct gl_context *ctx, unsigned num_tfeedback_decls, tfeedback_decl *tfeedback_decls); +bool +check_against_varying_limit(struct gl_context *ctx, + struct gl_shader_program *prog, + gl_shader *consumer); + #endif /* GLSL_LINK_VARYINGS_H */ diff --git a/src/glsl/linker.cpp b/src/glsl/linker.cpp index 3adcddd..6d73578 100644 --- a/src/glsl/linker.cpp +++ b/src/glsl/linker.cpp @@ -1929,6 +1929,10 @@ link_shaders(struct gl_context *ctx, struct gl_shader_program *prog) while (do_dead_code(sh_next->ir, false)) ; + /* This must be done after all dead varyings are eliminated. */ + if (!check_against_varying_limit(ctx, prog, sh_next)) + goto done; + next = i; } |