st/dri: add a new driconf option disable_shader_bit_encoding for Unigine

Now Unigine Heaven 3.0 finally works with r600g.

Reviewed-by: Kenneth Graunke <[email protected]>
Reviewed-by: Brian Paul <[email protected]>

3 files changed, 15 insertions, 1 deletions

diff --git a/src/mesa/drivers/dri/common/drirc b/src/mesa/drivers/dri/common/drirc
index b5430eda5db..ebc04cd9bf7 100644
--- a/src/mesa/drivers/dri/common/drirc
+++ b/src/mesa/drivers/dri/common/drirc
@@ -18,6 +18,10 @@ Application bugs worked around in this file:
   fails to compile with GLSL 1.10.
   Adding "#version 130" fixes this.
 
+* Unigine Heaven 3.0 with ARB_shader_bit_encoding uses a "uint & int"
+  expression, which fails (and should fail) to compile with any GLSL version.
+  Disabling ARB_shader_bit_encoding fixes this.
+
 TODO: document the other workarounds.
 
 -->
@@ -40,12 +44,14 @@ TODO: document the other workarounds.
             <option name="force_glsl_extensions_warn" value="true" />
             <option name="disable_blend_func_extended" value="true" />
             <option name="force_glsl_version" value="130" />
+            <option name="disable_shader_bit_encoding" value="true" />
 	</application>
 
         <application name="Unigine Heaven (64-bit)" executable="heaven_x64">
             <option name="force_glsl_extensions_warn" value="true" />
             <option name="disable_blend_func_extended" value="true" />
             <option name="force_glsl_version" value="130" />
+            <option name="disable_shader_bit_encoding" value="true" />
 	</application>
 
         <application name="Unigine OilRush (32-bit)" executable="OilRush_x86">
diff --git a/src/mesa/drivers/dri/common/xmlpool/t_options.h b/src/mesa/drivers/dri/common/xmlpool/t_options.h
index a4e7eb1b0f7..3bf804a171c 100644
--- a/src/mesa/drivers/dri/common/xmlpool/t_options.h
+++ b/src/mesa/drivers/dri/common/xmlpool/t_options.h
@@ -95,6 +95,11 @@ DRI_CONF_OPT_BEGIN_B(disable_glsl_line_continuations, def) \
         DRI_CONF_DESC(en,gettext("Disable backslash-based line continuations in GLSL source")) \
 DRI_CONF_OPT_END
 
+#define DRI_CONF_DISABLE_SHADER_BIT_ENCODING(def) \
+DRI_CONF_OPT_BEGIN_B(disable_shader_bit_encoding, def) \
+        DRI_CONF_DESC(en,gettext("Disable GL_ARB_shader_bit_encoding")) \
+DRI_CONF_OPT_END
+
 #define DRI_CONF_FORCE_GLSL_VERSION(def) \
 DRI_CONF_OPT_BEGIN_V(force_glsl_version, int, def, "0:999") \
         DRI_CONF_DESC(en,gettext("Force a default GLSL version for shaders that lack an explicit #version line")) \
diff --git a/src/mesa/state_tracker/st_extensions.c b/src/mesa/state_tracker/st_extensions.c
index a1457767890..0b7001baec2 100644
--- a/src/mesa/state_tracker/st_extensions.c
+++ b/src/mesa/state_tracker/st_extensions.c
@@ -609,10 +609,13 @@ void st_init_extensions(struct st_context *st)
 
       /* Extensions that either depend on GLSL 1.30 or are a subset thereof. */
       ctx->Extensions.ARB_conservative_depth = GL_TRUE;
-      ctx->Extensions.ARB_shader_bit_encoding = GL_TRUE;
       ctx->Extensions.ARB_shading_language_packing = GL_TRUE;
       ctx->Extensions.OES_depth_texture_cube_map = GL_TRUE;
       ctx->Extensions.ARB_shading_language_420pack = GL_TRUE;
+
+      if (!st->options.disable_shader_bit_encoding) {
+         ctx->Extensions.ARB_shader_bit_encoding = GL_TRUE;
+      }
    } else {
       /* Optional integer support for GLSL 1.2. */
       if (screen->get_shader_param(screen, PIPE_SHADER_VERTEX,