mesa: move gl_context::varying_vp_inputs into ctx->VertexProgram._VaryingInputs

This is where it belongs.

Reviewed-by: Zoltán Böszörményi <zboszor@gmail.com>
Reviewed-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/8798>

src/mesa/main/context.c

@@ -881,7 +881,7 @@ init_attrib_groups(struct gl_context *ctx)
    ctx->NewDriverState = ~0;
    ctx->ErrorValue = GL_NO_ERROR;
    ctx->ShareGroupReset = false;
-   ctx->varying_vp_inputs = VERT_BIT_ALL;
+   ctx->VertexProgram._VaryingInputs = VERT_BIT_ALL;
    ctx->IntelBlackholeRender = env_var_as_boolean("INTEL_BLACKHOLE_DEFAULT", false);
 
    return GL_TRUE;

src/mesa/main/ff_fragment_shader.cpp

@@ -180,8 +180,8 @@ static GLbitfield filter_fp_input_mask( GLbitfield fp_inputs,
       GLbitfield possible_inputs = 0;
 
       /* _NEW_VARYING_VP_INPUTS */
-      GLbitfield varying_inputs = ctx->varying_vp_inputs;
-      /* We only update ctx->varying_vp_inputs when in VP_MODE_FF _VPMode */
+      GLbitfield varying_inputs = ctx->VertexProgram._VaryingInputs;
+      /* We only update ctx->VertexProgram._VaryingInputs when in VP_MODE_FF _VPMode */
       assert(VP_MODE_FF == ctx->VertexProgram._VPMode);
 
       /* These get generated in the setup routine regardless of the

src/mesa/main/ffvertex_prog.c

@@ -163,7 +163,7 @@ static void make_state_key( struct gl_context *ctx, struct state_key *key )
    key->need_eye_coords = ctx->_NeedEyeCoords;
 
    key->fragprog_inputs_read = fp->info.inputs_read;
-   key->varying_vp_inputs = ctx->varying_vp_inputs;
+   key->varying_vp_inputs = ctx->VertexProgram._VaryingInputs;
 
    if (ctx->RenderMode == GL_FEEDBACK) {
       /* make sure the vertprog emits color and tex0 */
@@ -1659,7 +1659,7 @@ _mesa_get_fixed_func_vertex_program(struct gl_context *ctx)
    struct gl_program *prog;
    struct state_key key;
 
-   /* We only update ctx->varying_vp_inputs when in VP_MODE_FF _VPMode */
+   /* We only update ctx->VertexProgram._VaryingInputs when in VP_MODE_FF _VPMode */
    assert(VP_MODE_FF == ctx->VertexProgram._VPMode);
 
    /* Grab all the relevant state and put it in a single structure:

src/mesa/main/mtypes.h

@@ -2394,6 +2394,8 @@ struct gl_vertex_program_state
     * vertex program which are heavyweight already.
     */
    gl_vertex_processing_mode _VPMode;
+
+   GLbitfield _VaryingInputs;  /**< mask of VERT_BIT_* flags */
 };
 
 /**
@@ -4651,7 +4653,7 @@ struct gl_matrix_stack
 /* gap */
 #define _NEW_FRAG_CLAMP        (1u << 29)
 /* gap, re-use for core Mesa state only; use ctx->DriverFlags otherwise */
-#define _NEW_VARYING_VP_INPUTS (1u << 31) /**< gl_context::varying_vp_inputs */
+#define _NEW_VARYING_VP_INPUTS (1u << 31) /**< gl_context::VertexProgram._VaryingInputs */
 #define _NEW_ALL ~0
 /*@}*/
 
@@ -5465,8 +5467,6 @@ struct gl_context
    /* Is gl_PrimitiveID unused by the current shaders? */
    bool _PrimitiveIDIsUnused;
 
-   GLbitfield varying_vp_inputs;  /**< mask of VERT_BIT_* flags */
-
    /** \name Derived state */
    GLbitfield _ImageTransferState;/**< bitwise-or of IMAGE_*_BIT flags */
    GLfloat _EyeZDir[3];

src/mesa/main/state.c

@@ -572,8 +572,8 @@ static void
 set_varying_vp_inputs(struct gl_context *ctx, GLbitfield varying_inputs)
 {
    if (ctx->VertexProgram._VPModeOptimizesConstantAttribs &&
-       ctx->varying_vp_inputs != varying_inputs) {
-      ctx->varying_vp_inputs = varying_inputs;
+       ctx->VertexProgram._VaryingInputs != varying_inputs) {
+      ctx->VertexProgram._VaryingInputs = varying_inputs;
       ctx->NewState |= _NEW_VARYING_VP_INPUTS;
    }
 }
@@ -611,7 +611,7 @@ set_vertex_processing_mode(struct gl_context *ctx, gl_vertex_processing_mode m)
    /* Finally memorize the value */
    ctx->VertexProgram._VPMode = m;
 
-   /* The gl_context::varying_vp_inputs value is only used when in
+   /* The gl_context::VertexProgram._VaryingInputs value is only used when in
     * VP_MODE_FF mode and the fixed-func pipeline is emulated by shaders.
     */
    ctx->VertexProgram._VPModeOptimizesConstantAttribs =