diff --git a/src/compiler/glsl/builtin_variables.cpp b/src/compiler/glsl/builtin_variables.cpp
index 3a8ec615c13..d2d9d177026 100644
--- a/src/compiler/glsl/builtin_variables.cpp
+++ b/src/compiler/glsl/builtin_variables.cpp
@@ -1630,6 +1630,9 @@ builtin_variable_generator::generate_varyings()
 
          var->data.invariant = fields[i].location == VARYING_SLOT_POS &&
                                options->PositionAlwaysInvariant;
+
+         var->data.precise = fields[i].location == VARYING_SLOT_POS &&
+                               options->PositionAlwaysPrecise;
       }
    }
 }
diff --git a/src/gallium/auxiliary/pipe-loader/driinfo_gallium.h b/src/gallium/auxiliary/pipe-loader/driinfo_gallium.h
index 051d74a381f..fe23c0af65f 100644
--- a/src/gallium/auxiliary/pipe-loader/driinfo_gallium.h
+++ b/src/gallium/auxiliary/pipe-loader/driinfo_gallium.h
@@ -48,6 +48,7 @@ DRI_CONF_SECTION_MISCELLANEOUS
    DRI_CONF_ALWAYS_HAVE_DEPTH_BUFFER(false)
    DRI_CONF_GLSL_ZERO_INIT(false)
    DRI_CONF_VS_POSITION_ALWAYS_INVARIANT(false)
+   DRI_CONF_VS_POSITION_ALWAYS_PRECISE(false)
    DRI_CONF_ALLOW_RGB10_CONFIGS(true)
    DRI_CONF_ALLOW_FP16_CONFIGS(false)
    DRI_CONF_FORCE_INTEGER_TEX_NEAREST(false)
diff --git a/src/gallium/auxiliary/util/u_driconf.c b/src/gallium/auxiliary/util/u_driconf.c
index 3098ade81aa..8ace8474766 100644
--- a/src/gallium/auxiliary/util/u_driconf.c
+++ b/src/gallium/auxiliary/util/u_driconf.c
@@ -54,6 +54,7 @@ u_driconf_fill_st_options(struct st_config_options *options,
    query_bool_option(glsl_zero_init);
    query_bool_option(force_integer_tex_nearest);
    query_bool_option(vs_position_always_invariant);
+   query_bool_option(vs_position_always_precise);
    query_bool_option(force_glsl_abs_sqrt);
    query_bool_option(allow_glsl_cross_stage_interpolation_mismatch);
    query_bool_option(allow_draw_out_of_order);
diff --git a/src/gallium/include/frontend/api.h b/src/gallium/include/frontend/api.h
index 1b131367119..5b9f9c63d6d 100644
--- a/src/gallium/include/frontend/api.h
+++ b/src/gallium/include/frontend/api.h
@@ -230,6 +230,7 @@ struct st_config_options
    bool glsl_ignore_write_to_readonly_var;
    bool glsl_zero_init;
    bool vs_position_always_invariant;
+   bool vs_position_always_precise;
    bool force_glsl_abs_sqrt;
    bool allow_glsl_cross_stage_interpolation_mismatch;
    bool allow_draw_out_of_order;
diff --git a/src/mesa/drivers/dri/i965/brw_screen.c b/src/mesa/drivers/dri/i965/brw_screen.c
index 23f31f37917..9e00819b338 100644
--- a/src/mesa/drivers/dri/i965/brw_screen.c
+++ b/src/mesa/drivers/dri/i965/brw_screen.c
@@ -95,6 +95,7 @@ static const driOptionDescription brw_driconf[] = {
    DRI_CONF_SECTION_MISCELLANEOUS
       DRI_CONF_GLSL_ZERO_INIT(false)
       DRI_CONF_VS_POSITION_ALWAYS_INVARIANT(false)
+      DRI_CONF_VS_POSITION_ALWAYS_PRECISE(false)
       DRI_CONF_ALLOW_RGB10_CONFIGS(false)
       DRI_CONF_ALLOW_RGB565_CONFIGS(true)
       DRI_CONF_ALLOW_FP16_CONFIGS(false)
@@ -2803,6 +2804,7 @@ __DRIconfig **brw_init_screen(__DRIscreen *dri_screen)
       !(screen->kernel_features & KERNEL_ALLOWS_CONTEXT_ISOLATION);
 
    screen->compiler->glsl_compiler_options[MESA_SHADER_VERTEX].PositionAlwaysInvariant = driQueryOptionb(&screen->optionCache, "vs_position_always_invariant");
+   screen->compiler->glsl_compiler_options[MESA_SHADER_TESS_EVAL].PositionAlwaysPrecise = driQueryOptionb(&screen->optionCache, "vs_position_always_precise");
 
    screen->compiler->supports_pull_constants = true;
    screen->compiler->compact_params = true;
diff --git a/src/mesa/main/mtypes.h b/src/mesa/main/mtypes.h
index 29ec5c3e5f7..989d652bb15 100644
--- a/src/mesa/main/mtypes.h
+++ b/src/mesa/main/mtypes.h
@@ -3295,6 +3295,9 @@ struct gl_shader_compiler_options
    /** (driconf) Force gl_Position to be considered invariant */
    GLboolean PositionAlwaysInvariant;
 
+   /** (driconf) Force gl_Position to be considered precise */
+   GLboolean PositionAlwaysPrecise;
+
    const struct nir_shader_compiler_options *NirOptions;
 };
 
diff --git a/src/mesa/state_tracker/st_context.c b/src/mesa/state_tracker/st_context.c
index b2a1b68b686..1c53045175b 100644
--- a/src/mesa/state_tracker/st_context.c
+++ b/src/mesa/state_tracker/st_context.c
@@ -796,6 +796,8 @@ st_create_context_priv(struct gl_context *ctx, struct pipe_context *pipe,
 
    ctx->Const.ShaderCompilerOptions[MESA_SHADER_VERTEX].PositionAlwaysInvariant = options->vs_position_always_invariant;
 
+   ctx->Const.ShaderCompilerOptions[MESA_SHADER_TESS_EVAL].PositionAlwaysPrecise = options->vs_position_always_precise;
+
    enum pipe_shader_ir preferred_ir = (enum pipe_shader_ir)
       screen->get_shader_param(screen, PIPE_SHADER_VERTEX,
                                PIPE_SHADER_CAP_PREFERRED_IR);
diff --git a/src/util/driconf.h b/src/util/driconf.h
index 6248957df25..973ba8a39cd 100644
--- a/src/util/driconf.h
+++ b/src/util/driconf.h
@@ -359,6 +359,10 @@
    DRI_CONF_OPT_B(vs_position_always_invariant, def, \
                   "Force the vertex shader's gl_Position output to be considered 'invariant'")
 
+#define DRI_CONF_VS_POSITION_ALWAYS_PRECISE(def) \
+   DRI_CONF_OPT_B(vs_position_always_precise, def, \
+                  "Force the vertex shader's gl_Position output to be considered 'precise'")
+
 #define DRI_CONF_ALLOW_RGB10_CONFIGS(def) \
    DRI_CONF_OPT_B(allow_rgb10_configs, def, \
                   "Allow exposure of visuals and fbconfigs with rgb10a2 formats")