wined3d: Add ARB_texture_gather extension.

dlls/wined3d/directx.c

@@ -172,6 +172,7 @@ static const struct wined3d_extension_map gl_extension_map[] =
     {"GL_ARB_texture_env_combine",          ARB_TEXTURE_ENV_COMBINE       },
     {"GL_ARB_texture_env_dot3",             ARB_TEXTURE_ENV_DOT3          },
     {"GL_ARB_texture_float",                ARB_TEXTURE_FLOAT             },
+    {"GL_ARB_texture_gather",               ARB_TEXTURE_GATHER            },
     {"GL_ARB_texture_mirrored_repeat",      ARB_TEXTURE_MIRRORED_REPEAT   },
     {"GL_ARB_texture_mirror_clamp_to_edge", ARB_TEXTURE_MIRROR_CLAMP_TO_EDGE},
     {"GL_ARB_texture_non_power_of_two",     ARB_TEXTURE_NON_POWER_OF_TWO  },
@@ -3828,6 +3829,7 @@ static BOOL wined3d_adapter_init_gl_caps(struct wined3d_adapter *adapter,
 
         {ARB_GPU_SHADER5,                  MAKEDWORD_VERSION(4, 0)},
         {ARB_TEXTURE_CUBE_MAP_ARRAY,       MAKEDWORD_VERSION(4, 0)},
+        {ARB_TEXTURE_GATHER,               MAKEDWORD_VERSION(4, 0)},
         {ARB_TRANSFORM_FEEDBACK2,          MAKEDWORD_VERSION(4, 0)},
         {ARB_TRANSFORM_FEEDBACK3,          MAKEDWORD_VERSION(4, 0)},
 

dlls/wined3d/glsl_shader.c

@@ -9788,7 +9788,7 @@ static void shader_glsl_init_context_state(struct wined3d_context *context)
 
 static void shader_glsl_get_caps(const struct wined3d_gl_info *gl_info, struct shader_caps *caps)
 {
-    UINT shader_model;
+    unsigned int shader_model;
 
     /* FIXME: Check for the specific extensions required for SM5 support
      * (ARB_compute_shader, ARB_tessellation_shader, ARB_gpu_shader5, ...) as
@@ -9802,6 +9802,7 @@ static void shader_glsl_get_caps(const struct wined3d_gl_info *gl_info, struct s
             && gl_info->supported[ARB_SHADER_IMAGE_LOAD_STORE]
             && gl_info->supported[ARB_SHADER_IMAGE_SIZE]
             && gl_info->supported[ARB_SHADING_LANGUAGE_PACKING]
+            && gl_info->supported[ARB_TEXTURE_GATHER]
             && gl_info->supported[ARB_TRANSFORM_FEEDBACK3])
         shader_model = 5;
     else if (gl_info->glsl_version >= MAKEDWORD_VERSION(1, 50) && gl_info->supported[WINED3D_GL_VERSION_3_2]

dlls/wined3d/wined3d_gl.h

@@ -105,6 +105,7 @@ enum wined3d_gl_extension
     ARB_TEXTURE_ENV_COMBINE,
     ARB_TEXTURE_ENV_DOT3,
     ARB_TEXTURE_FLOAT,
+    ARB_TEXTURE_GATHER,
     ARB_TEXTURE_MIRRORED_REPEAT,
     ARB_TEXTURE_MIRROR_CLAMP_TO_EDGE,
     ARB_TEXTURE_NON_POWER_OF_TWO,