mesa: add OES_texture_buffer and EXT_texture_buffer support

Allow ES 3.1 contexts to access the texture buffer functionality.

Signed-off-by: Ilia Mirkin <[email protected]>
Reviewed-by: Brian Paul <[email protected]>
Reviewed-by: Ian Romanick <[email protected]>

1 files changed, 20 insertions, 19 deletions

diff --git a/src/mesa/main/texparam.c b/src/mesa/main/texparam.c
index 8a3e02f0552..ba83f8fda9a 100644
--- a/src/mesa/main/texparam.c
+++ b/src/mesa/main/texparam.c
@@ -1223,6 +1223,26 @@ _mesa_legal_get_tex_level_parameter_target(struct gl_context *ctx, GLenum target
    case GL_TEXTURE_2D_MULTISAMPLE:
    case GL_TEXTURE_2D_MULTISAMPLE_ARRAY:
       return ctx->Extensions.ARB_texture_multisample;
+   case GL_TEXTURE_BUFFER:
+      /* GetTexLevelParameter accepts GL_TEXTURE_BUFFER in GL 3.1+ contexts,
+       * but not in earlier versions that expose ARB_texture_buffer_object.
+       *
+       * From the ARB_texture_buffer_object spec:
+       * "(7) Do buffer textures support texture parameters (TexParameter) or
+       *      queries (GetTexParameter, GetTexLevelParameter, GetTexImage)?
+       *
+       *    RESOLVED:  No. [...] Note that the spec edits above don't add
+       *    explicit error language for any of these cases.  That is because
+       *    each of the functions enumerate the set of valid <target>
+       *    parameters.  Not editing the spec to allow TEXTURE_BUFFER_ARB in
+       *    these cases means that target is not legal, and an INVALID_ENUM
+       *    error should be generated."
+       *
+       * From the OpenGL 3.1 spec:
+       * "target may also be TEXTURE_BUFFER, indicating the texture buffer."
+       */
+      return (ctx->API == API_OPENGL_CORE && ctx->Version >= 31) ||
+         _mesa_has_OES_texture_buffer(ctx);
    }
 
    if (!_mesa_is_desktop_gl(ctx))
@@ -1247,25 +1267,6 @@ _mesa_legal_get_tex_level_parameter_target(struct gl_context *ctx, GLenum target
    case GL_PROXY_TEXTURE_1D_ARRAY_EXT:
    case GL_PROXY_TEXTURE_2D_ARRAY_EXT:
       return ctx->Extensions.EXT_texture_array;
-   case GL_TEXTURE_BUFFER:
-      /* GetTexLevelParameter accepts GL_TEXTURE_BUFFER in GL 3.1+ contexts,
-       * but not in earlier versions that expose ARB_texture_buffer_object.
-       *
-       * From the ARB_texture_buffer_object spec:
-       * "(7) Do buffer textures support texture parameters (TexParameter) or
-       *      queries (GetTexParameter, GetTexLevelParameter, GetTexImage)?
-       *
-       *    RESOLVED:  No. [...] Note that the spec edits above don't add
-       *    explicit error language for any of these cases.  That is because
-       *    each of the functions enumerate the set of valid <target>
-       *    parameters.  Not editing the spec to allow TEXTURE_BUFFER_ARB in
-       *    these cases means that target is not legal, and an INVALID_ENUM
-       *    error should be generated."
-       *
-       * From the OpenGL 3.1 spec:
-       * "target may also be TEXTURE_BUFFER, indicating the texture buffer."
-       */
-      return ctx->API == API_OPENGL_CORE && ctx->Version >= 31;
    case GL_PROXY_TEXTURE_2D_MULTISAMPLE:
    case GL_PROXY_TEXTURE_2D_MULTISAMPLE_ARRAY:
       return ctx->Extensions.ARB_texture_multisample;