wined3d/glsl: Clamp ftou upper bound to UINT_MAX.

dlls/wined3d/adapter_gl.c

@@ -194,6 +194,7 @@ static const struct wined3d_extension_map gl_extension_map[] =
     {"GL_EXT_polygon_offset_clamp",         ARB_POLYGON_OFFSET_CLAMP      },
     {"GL_EXT_provoking_vertex",             EXT_PROVOKING_VERTEX          },
     {"GL_EXT_secondary_color",              EXT_SECONDARY_COLOR           },
+    {"GL_EXT_shader_integer_mix",           EXT_SHADER_INTEGER_MIX        },
     {"GL_EXT_stencil_two_side",             EXT_STENCIL_TWO_SIDE          },
     {"GL_EXT_stencil_wrap",                 EXT_STENCIL_WRAP              },
     {"GL_EXT_texture3D",                    EXT_TEXTURE3D                 },
@@ -3391,6 +3392,7 @@ static BOOL wined3d_adapter_init_gl_caps(struct wined3d_adapter_gl *adapter_gl,
         {ARB_DERIVATIVE_CONTROL,           MAKEDWORD_VERSION(4, 5)},
         {ARB_SHADER_TEXTURE_IMAGE_SAMPLES, MAKEDWORD_VERSION(4, 5)},
         {ARB_TEXTURE_BARRIER,              MAKEDWORD_VERSION(4, 5)},
+        {EXT_SHADER_INTEGER_MIX,           MAKEDWORD_VERSION(4, 5)},
 
         {ARB_PIPELINE_STATISTICS_QUERY,    MAKEDWORD_VERSION(4, 6)},
         {ARB_POLYGON_OFFSET_CLAMP,         MAKEDWORD_VERSION(4, 6)},

dlls/wined3d/glsl_shader.c

@@ -4338,9 +4338,11 @@ static void shader_glsl_to_uint(const struct wined3d_shader_instruction *ins)
     shader_glsl_add_src_param(ins, &ins->src[0], write_mask, &src_param);
 
     if (mask_size > 1)
-        shader_addline(buffer, "uvec%u(max(%s, vec%u(0.0))));\n", mask_size, src_param.param_str, mask_size);
+        shader_addline(buffer, "mix(uvec%u(max(%s, vec%u(0.0))), uvec%u(0xffffffffu), greaterThanEqual(%s, vec%u(4294967296.0))));\n",
+                mask_size, src_param.param_str, mask_size, mask_size, src_param.param_str, mask_size);
     else
-        shader_addline(buffer, "uint(max(%s, 0)));\n", src_param.param_str);
+        shader_addline(buffer, "mix(uint(max(%s, 0.0)), 0xffffffffu, %s >= 4294967296.0));\n",
+                src_param.param_str, src_param.param_str);
 }
 
 static void shader_glsl_to_float(const struct wined3d_shader_instruction *ins)
@@ -7564,6 +7566,8 @@ static void shader_glsl_enable_extensions(struct wined3d_string_buffer *buffer,
         shader_addline(buffer, "#extension GL_ARB_viewport_array : enable\n");
     if (gl_info->supported[EXT_GPU_SHADER4])
         shader_addline(buffer, "#extension GL_EXT_gpu_shader4 : enable\n");
+    if (gl_info->supported[EXT_SHADER_INTEGER_MIX])
+        shader_addline(buffer, "#extension GL_EXT_shader_integer_mix : enable\n");
     if (gl_info->supported[EXT_TEXTURE_ARRAY])
         shader_addline(buffer, "#extension GL_EXT_texture_array : enable\n");
     if (gl_info->supported[EXT_TEXTURE_SHADOW_LOD])
@@ -11168,7 +11172,8 @@ static unsigned int shader_glsl_get_shader_model(const struct wined3d_gl_info *g
 {
     BOOL shader_model_4 = gl_info->glsl_version >= MAKEDWORD_VERSION(1, 50)
             && gl_info->supported[ARB_SHADER_BIT_ENCODING]
-            && gl_info->supported[ARB_TEXTURE_SWIZZLE];
+            && gl_info->supported[ARB_TEXTURE_SWIZZLE]
+            && gl_info->supported[EXT_SHADER_INTEGER_MIX];
 
     if (shader_model_4
             && gl_info->supported[ARB_COMPUTE_SHADER]

dlls/wined3d/wined3d_gl.h

@@ -184,6 +184,7 @@ enum wined3d_gl_extension
     EXT_POINT_PARAMETERS,
     EXT_PROVOKING_VERTEX,
     EXT_SECONDARY_COLOR,
+    EXT_SHADER_INTEGER_MIX,
     EXT_STENCIL_TWO_SIDE,
     EXT_STENCIL_WRAP,
     EXT_TEXTURE3D,