[Mesa-dev] [RFC 12/20] mesa: add _Linked helper to gl_shader_program struct

[Tapani Pälli]

This boolean indicates if program has ever been linked succesfully,
will be used by binary shader cache to detect relinking.

Signed-off-by: Tapani Pälli <tapani.palli at intel.com>
---
 src/mesa/main/mtypes.h          | 1 +
 src/mesa/program/ir_to_mesa.cpp | 2 ++
 2 files changed, 3 insertions(+)

diff --git a/src/mesa/main/mtypes.h b/src/mesa/main/mtypes.h
index 917d071..688a3bd 100644
--- a/src/mesa/main/mtypes.h
+++ b/src/mesa/main/mtypes.h
@@ -2747,6 +2747,7 @@ struct gl_shader_program
    GLboolean LinkStatus;   /**< GL_LINK_STATUS */
    GLboolean Validated;
    GLboolean _Used;        /**< Ever used for drawing? */
+   GLboolean _Linked;      /**< Ever linked? */
    GLchar *InfoLog;
 
    unsigned Version;       /**< GLSL version used for linking */
diff --git a/src/mesa/program/ir_to_mesa.cpp b/src/mesa/program/ir_to_mesa.cpp
index 59cf123..b3fab72 100644
--- a/src/mesa/program/ir_to_mesa.cpp
+++ b/src/mesa/program/ir_to_mesa.cpp
@@ -3091,6 +3091,8 @@ _mesa_glsl_link_shader(struct gl_context *ctx, struct gl_shader_program *prog)
    if (prog->LinkStatus) {
       if (!ctx->Driver.LinkShader(ctx, prog)) {
 	 prog->LinkStatus = GL_FALSE;
+      } else {
+         prog->_Linked = GL_TRUE;
       }
    }
 
-- 
1.8.3.1