st/mesa: get max supported number of image samples from driver

Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>

diff --git a/src/mesa/state_tracker/st_extensions.c b/src/mesa/state_tracker/st_extensions.c
index 412f598..c5ecd5a 100644 (file)
--- a/src/mesa/state_tracker/st_extensions.c
+++ b/src/mesa/state_tracker/st_extensions.c
@@ -443,7 +443,6 @@ void st_init_limits(struct pipe_screen *screen,
          c->Program[MESA_SHADER_COMPUTE].MaxImageUniforms;
    c->MaxCombinedShaderOutputResources += c->MaxCombinedImageUniforms;
    c->MaxImageUnits = MAX_IMAGE_UNITS;
-   c->MaxImageSamples = 0; /* XXX */
    if (c->MaxCombinedImageUniforms) {
       extensions->ARB_shader_image_load_store = GL_TRUE;
       extensions->ARB_shader_image_size = GL_TRUE;
@@ -988,6 +987,11 @@ void st_init_extensions(struct pipe_screen *screen,
                                      color_formats, 16,
                                      PIPE_BIND_RENDER_TARGET);
 
+      consts->MaxImageSamples =
+         get_max_samples_for_formats(screen, ARRAY_SIZE(color_formats),
+                                     color_formats, 16,
+                                     PIPE_BIND_SHADER_IMAGE);
+
       consts->MaxColorTextureSamples =
          get_max_samples_for_formats(screen, ARRAY_SIZE(color_formats),
                                      color_formats, consts->MaxSamples,