vrend: Sync some constants with mesa and pass max_shader_samplers

This is needed for modern games that require more than 16 samplers.

Signed-off-by: Gert Wollny <gert.wollny@collabora.com>
Reviewed-by: John Bates <jbates@chromium.org>

src/gallium/include/pipe/p_state.h

@@ -57,10 +57,10 @@ extern "C" {
 #define PIPE_MAX_CLIP_PLANES       8
 #define PIPE_MAX_COLOR_BUFS        8
 #define PIPE_MAX_CONSTANT_BUFFERS 32
-#define PIPE_MAX_SAMPLERS         16
+#define PIPE_MAX_SAMPLERS         32
 #define PIPE_MAX_SHADER_INPUTS    80 /* 32 GENERIC + 32 PATCH + 16 others */
 #define PIPE_MAX_SHADER_OUTPUTS   80 /* 32 GENERIC + 32 PATCH + 16 others */
-#define PIPE_MAX_SHADER_SAMPLER_VIEWS 32
+#define PIPE_MAX_SHADER_SAMPLER_VIEWS 128
 #define PIPE_MAX_SHADER_BUFFERS   32
 #define PIPE_MAX_SHADER_IMAGES    32
 #define PIPE_MAX_TEXTURE_LEVELS   16

src/virgl_hw.h

@@ -597,6 +597,7 @@ struct virgl_caps_v2 {
         uint32_t max_video_memory;
         char renderer[64];
         float max_anisotropy;
+        uint32_t max_texture_image_units;
 };
 
 union virgl_caps {

src/vrend_renderer.c

@@ -10852,6 +10852,8 @@ static void vrend_renderer_fill_caps_v2(int gl_ver, int gles_ver,  union virgl_c
       caps->v2.max_anisotropy = MIN2(max_aniso, 16.0);
    }
 
+   glGetIntegerv(GL_MAX_TEXTURE_IMAGE_UNITS, &max);
+   caps->v2.max_texture_image_units = max;
 }
 
 void vrend_renderer_fill_caps(uint32_t set, uint32_t version,