mesa/main: do not allow EXT_texture_shared_exponent enums before gles3

ctx->Extensions.EXT_texture_shared_exponent is set regardless of the
API that's used, so checking for those direcly will always allow the
enums from this extensions when they are supported by the driver.

We also need to make sure this is enabled on OpenGL ES 3. Because the
check is repeated, let's introduce a helper.

Signed-off-by: Erik Faye-Lund <[email protected]>
Reviewed-by: Marek Olšák <[email protected]>

2 files changed, 8 insertions, 2 deletions

diff --git a/src/mesa/main/context.h b/src/mesa/main/context.h
index af81717d9bd..7db3b94e0b6 100644
--- a/src/mesa/main/context.h
+++ b/src/mesa/main/context.h
@@ -367,6 +367,12 @@ _mesa_has_rg_textures(const struct gl_context *ctx)
    return _mesa_has_ARB_texture_rg(ctx) || _mesa_is_gles3(ctx);
 }
 
+static inline bool
+_mesa_has_texture_shared_exponent(const struct gl_context *ctx)
+{
+   return _mesa_has_EXT_texture_shared_exponent(ctx) || _mesa_is_gles3(ctx);
+}
+
 /**
  * Checks if the context supports geometry shaders.
  */
diff --git a/src/mesa/main/glformats.c b/src/mesa/main/glformats.c
index fb1135284d9..319422c27ad 100644
--- a/src/mesa/main/glformats.c
+++ b/src/mesa/main/glformats.c
@@ -1966,7 +1966,7 @@ _mesa_error_check_format_and_type(const struct gl_context *ctx,
                return (ctx->API == API_OPENGLES2)
                   ? GL_NO_ERROR : GL_INVALID_ENUM;
             case GL_UNSIGNED_INT_5_9_9_9_REV:
-               return ctx->Extensions.EXT_texture_shared_exponent
+               return _mesa_has_texture_shared_exponent(ctx)
                   ? GL_NO_ERROR : GL_INVALID_ENUM;
             case GL_UNSIGNED_INT_10F_11F_11F_REV:
                return _mesa_has_packed_float(ctx)
@@ -2589,7 +2589,7 @@ _mesa_base_tex_format(const struct gl_context *ctx, GLint internalFormat)
       }
    }
 
-   if (ctx->Extensions.EXT_texture_shared_exponent) {
+   if (_mesa_has_texture_shared_exponent(ctx)) {
       switch (internalFormat) {
       case GL_RGB9_E5_EXT:
          return GL_RGB;