mesa: extension flags and version testing for GL 3.x features

1 files changed, 64 insertions, 1 deletions

diff --git a/src/mesa/main/version.c b/src/mesa/main/version.c
index dea3019d0b..525d179621 100644
--- a/src/mesa/main/version.c
+++ b/src/mesa/main/version.c
@@ -87,7 +87,70 @@ compute_version(GLcontext *ctx)
                               ctx->Extensions.ARB_shading_language_120 &&
                               ctx->Extensions.EXT_pixel_buffer_object &&
                               ctx->Extensions.EXT_texture_sRGB);
-   if (ver_2_1) {
+   const GLboolean ver_3_0 = (ver_2_1 &&
+                              ctx->Extensions.ARB_half_float_pixel &&
+                              ctx->Extensions.ARB_map_buffer_range &&
+                              ctx->Extensions.ARB_texture_float &&
+                              ctx->Extensions.APPLE_vertex_array_object &&
+                              ctx->Extensions.EXT_draw_buffers2 &&
+                              ctx->Extensions.EXT_framebuffer_blit &&
+                              ctx->Extensions.EXT_framebuffer_multisample &&
+                              ctx->Extensions.EXT_framebuffer_object &&
+                              ctx->Extensions.EXT_framebuffer_sRGB &&
+                              ctx->Extensions.EXT_packed_depth_stencil &&
+                              ctx->Extensions.EXT_packed_float &&
+                              ctx->Extensions.EXT_shared_exponent &&
+                              ctx->Extensions.EXT_texture_array &&
+                              ctx->Extensions.EXT_texture_compression_rgtc &&
+                              ctx->Extensions.EXT_texture_integer &&
+                              ctx->Extensions.EXT_transform_feedback &&
+                              ctx->Extensions.NV_conditional_render);
+   const GLboolean ver_3_1 = (ver_3_0 &&
+                              ctx->Extensions.ARB_copy_buffer &&
+                              ctx->Extensions.ARB_draw_instanced &&
+                              ctx->Extensions.ARB_texture_buffer_object &&
+                              ctx->Extensions.ARB_uniform_buffer_object &&
+                              ctx->Extensions.NV_primitive_restart &&
+                              ctx->Extensions.NV_texture_rectangle &&
+                              ctx->Const.MaxVertexTextureImageUnits >= 16);
+   const GLboolean ver_3_2 = (ver_3_1 &&
+                              ctx->Extensions.ARB_depth_clamp &&
+                              ctx->Extensions.ARB_draw_elements_base_vertex &&
+                              ctx->Extensions.ARB_fragment_coord_conventions &&
+                              ctx->Extensions.ARB_geometry_shader4 &&
+                              ctx->Extensions.EXT_provoking_vertex &&
+                              ctx->Extensions.ARB_seamless_cube_map &&
+                              ctx->Extensions.ARB_sync &&
+                              ctx->Extensions.ARB_texture_multisample &&
+                              ctx->Extensions.EXT_vertex_array_bgra);
+   const GLboolean ver_3_3 = (ver_3_2 &&
+                              ctx->Extensions.ARB_blend_func_extended &&
+                              ctx->Extensions.ARB_explicit_attrib_location &&
+                              ctx->Extensions.ARB_instanced_arrays &&
+                              ctx->Extensions.ARB_occlusion_query2 &&
+                              ctx->Extensions.ARB_sampler_objects &&
+                              ctx->Extensions.ARB_texture_rgb10_a2ui &&
+                              ctx->Extensions.ARB_timer_query &&
+                              ctx->Extensions.ARB_vertex_type_2_10_10_10_rev &&
+                              ctx->Extensions.EXT_texture_swizzle);
+
+   if (ver_3_3) {
+      major = 3;
+      minor = 3;
+   }
+   else if (ver_3_2) {
+      major = 3;
+      minor = 2;
+   }
+   else if (ver_3_1) {
+      major = 3;
+      minor = 1;
+   }
+   else if (ver_3_0) {
+      major = 3;
+      minor = 0;
+   }
+   else if (ver_2_1) {
       major = 2;
       minor = 1;
    }