mesa: Expose EXT_texture_query_lod and add support for its use shaders

EXT_texture_query_lod provides the same functionality for GLES like
the ARB extension with the same name for GL.

v2: Set ES 3.0 as minimum GLES version as required by the extension

Signed-off-by: Gert Wollny <gert.wollny@collabora.com>
Reviewed-by: Eric Anholt <eric@anholt.net>

src/compiler/glsl/builtin_functions.cpp

@@ -405,7 +405,8 @@ static bool
 texture_query_lod(const _mesa_glsl_parse_state *state)
 {
    return state->stage == MESA_SHADER_FRAGMENT &&
-          state->ARB_texture_query_lod_enable;
+          (state->ARB_texture_query_lod_enable ||
+           state->EXT_texture_query_lod_enable);
 }
 
 static bool

src/compiler/glsl/glsl_parser_extras.cpp

@@ -730,6 +730,7 @@ static const _mesa_glsl_extension _mesa_glsl_supported_extensions[] = {
    EXT(EXT_texture_array),
    EXT_AEP(EXT_texture_buffer),
    EXT_AEP(EXT_texture_cube_map_array),
+   EXT(EXT_texture_query_lod),
    EXT(INTEL_conservative_rasterization),
    EXT(INTEL_shader_atomic_float_minmax),
    EXT(MESA_shader_integer_functions),

src/compiler/glsl/glsl_parser_extras.h

@@ -834,6 +834,8 @@ struct _mesa_glsl_parse_state {
    bool EXT_texture_buffer_warn;
    bool EXT_texture_cube_map_array_enable;
    bool EXT_texture_cube_map_array_warn;
+   bool EXT_texture_query_lod_enable;
+   bool EXT_texture_query_lod_warn;
    bool INTEL_conservative_rasterization_enable;
    bool INTEL_conservative_rasterization_warn;
    bool INTEL_shader_atomic_float_minmax_enable;

src/mesa/main/extensions_table.h

@@ -301,6 +301,7 @@ EXT(EXT_texture_lod_bias                    , dummy_true
 EXT(EXT_texture_mirror_clamp                , EXT_texture_mirror_clamp               , GLL, GLC,  x ,  x , 2004)
 EXT(EXT_texture_norm16                      , dummy_true                             ,  x ,  x ,  x ,  31, 2014)
 EXT(EXT_texture_object                      , dummy_true                             , GLL,  x ,  x ,  x , 1995)
+EXT(EXT_texture_query_lod                   , ARB_texture_query_lod                  ,  x ,  x ,  x ,  30, 2019)
 EXT(EXT_texture_rectangle                   , NV_texture_rectangle                   , GLL,  x ,  x ,  x , 2004)
 EXT(EXT_texture_rg                          , ARB_texture_rg                         ,  x ,  x ,  x , ES2, 2011)
 EXT(EXT_texture_sRGB                        , EXT_texture_sRGB                       , GLL, GLC,  x ,  x , 2004)