nir: Move vc4's alpha test lowering to core NIR.

[mesa.git] / src / compiler / shader_enums.h

diff --git a/src/compiler/shader_enums.h b/src/compiler/shader_enums.h
index 98565c80cb8a547a9be963033c645587242ff51c..9d229d4199eb2d49173317e76156cc9d2f96847b 100644 (file)
--- a/src/compiler/shader_enums.h
+++ b/src/compiler/shader_enums.h
@@ -39,6 +39,7 @@ extern "C" {
  */
 typedef enum
 {
+   MESA_SHADER_NONE = -1,
    MESA_SHADER_VERTEX = 0,
    MESA_SHADER_TESS_CTRL = 1,
    MESA_SHADER_TESS_EVAL = 2,
@@ -217,6 +218,7 @@ typedef enum
    VARYING_SLOT_TESS_LEVEL_INNER, /* Only appears as TCS output. */
    VARYING_SLOT_BOUNDING_BOX0, /* Only appears as TCS output. */
    VARYING_SLOT_BOUNDING_BOX1, /* Only appears as TCS output. */
+   VARYING_SLOT_VIEW_INDEX,
    VARYING_SLOT_VAR0, /* First generic varying slot */
    /* the remaining are simply for the benefit of gl_varying_slot_name()
     * and not to be construed as an upper bound:
@@ -317,6 +319,65 @@ const char *gl_varying_slot_name(gl_varying_slot slot);
  */
 typedef enum
 {
+   /**
+    * \name System values applicable to all shaders
+    */
+   /*@{*/
+
+   /**
+    * Builtin variables added by GL_ARB_shader_ballot.
+    */
+   /*@{*/
+
+   /**
+    * From the GL_ARB_shader-ballot spec:
+    *
+    *    "A sub-group is a collection of invocations which execute in lockstep.
+    *     The variable <gl_SubGroupSizeARB> is the maximum number of
+    *     invocations in a sub-group. The maximum <gl_SubGroupSizeARB>
+    *     supported in this extension is 64."
+    *
+    * The spec defines this as a uniform. However, it's highly unlikely that
+    * implementations actually treat it as a uniform (which is loaded from a
+    * constant buffer). Most likely, this is an implementation-wide constant,
+    * or perhaps something that depends on the shader stage.
+    */
+   SYSTEM_VALUE_SUBGROUP_SIZE,
+
+   /**
+    * From the GL_ARB_shader_ballot spec:
+    *
+    *    "The variable <gl_SubGroupInvocationARB> holds the index of the
+    *     invocation within sub-group. This variable is in the range 0 to
+    *     <gl_SubGroupSizeARB>-1, where <gl_SubGroupSizeARB> is the total
+    *     number of invocations in a sub-group."
+    */
+   SYSTEM_VALUE_SUBGROUP_INVOCATION,
+
+   /**
+    * From the GL_ARB_shader_ballot spec:
+    *
+    *    "The <gl_SubGroup??MaskARB> variables provide a bitmask for all
+    *     invocations, with one bit per invocation starting with the least
+    *     significant bit, according to the following table,
+    *
+    *       variable               equation for bit values
+    *       --------------------   ------------------------------------
+    *       gl_SubGroupEqMaskARB   bit index == gl_SubGroupInvocationARB
+    *       gl_SubGroupGeMaskARB   bit index >= gl_SubGroupInvocationARB
+    *       gl_SubGroupGtMaskARB   bit index >  gl_SubGroupInvocationARB
+    *       gl_SubGroupLeMaskARB   bit index <= gl_SubGroupInvocationARB
+    *       gl_SubGroupLtMaskARB   bit index <  gl_SubGroupInvocationARB
+    */
+   SYSTEM_VALUE_SUBGROUP_EQ_MASK,
+   SYSTEM_VALUE_SUBGROUP_GE_MASK,
+   SYSTEM_VALUE_SUBGROUP_GT_MASK,
+   SYSTEM_VALUE_SUBGROUP_LE_MASK,
+   SYSTEM_VALUE_SUBGROUP_LT_MASK,
+   /*@}*/
+
+   /*@}*/
+
    /**
     * \name Vertex shader system values
     */
@@ -476,6 +537,9 @@ typedef enum
    SYSTEM_VALUE_LOCAL_GROUP_SIZE,
    /*@}*/
 
+   /** Required for VK_KHX_multiview */
+   SYSTEM_VALUE_VIEW_INDEX,
+
    /**
     * Driver internal vertex-count, used (for example) for drivers to
     * calculate stride for stream-out outputs.  Not externally visible.
@@ -503,6 +567,13 @@ enum glsl_interp_mode
    INTERP_MODE_COUNT /**< Number of interpolation qualifiers */
 };
 
+enum glsl_interface_packing {
+   GLSL_INTERFACE_PACKING_STD140,
+   GLSL_INTERFACE_PACKING_SHARED,
+   GLSL_INTERFACE_PACKING_PACKED,
+   GLSL_INTERFACE_PACKING_STD430
+};
+
 const char *glsl_interp_mode_name(enum glsl_interp_mode qual);
 
 /**
@@ -599,6 +670,23 @@ enum gl_tess_spacing
    TESS_SPACING_FRACTIONAL_EVEN,
 };
 
+/**
+ * A compare function enum for use in compiler lowering passes.  This is in
+ * the same order as GL's compare functions (shifted down by GL_NEVER), and is
+ * exactly the same as gallium's PIPE_FUNC_*.
+ */
+enum compare_func
+{
+   COMPARE_FUNC_NEVER,
+   COMPARE_FUNC_LESS,
+   COMPARE_FUNC_EQUAL,
+   COMPARE_FUNC_LEQUAL,
+   COMPARE_FUNC_GREATER,
+   COMPARE_FUNC_NOTEQUAL,
+   COMPARE_FUNC_GEQUAL,
+   COMPARE_FUNC_ALWAYS,
+};
+
 #ifdef __cplusplus
 } /* extern "C" */
 #endif