Vulkan: Begin parsing parameters.

gfx/drivers_shader/glslang_util.cpp

@@ -252,6 +252,9 @@ static glslang_format glslang_find_format(const char *fmt)
 
 static bool glslang_parse_meta(const vector<string> &lines, glslang_meta *meta)
 {
+   char id[64] = {};
+   char desc[64] = {};
+
    *meta = glslang_meta{};
    for (auto &line : lines)
    {
@@ -268,6 +271,21 @@ static bool glslang_parse_meta(const vector<string> &lines, glslang_meta *meta)
             str++;
          meta->name = str;
       }
+      else if (line.find("#pragma parameter ") == 0)
+      {
+         float initial, minimum, maximum, step;
+         int ret = sscanf(line.c_str(), "#pragma parameter %63s \"%63[^\"]\" %f %f %f %f",
+               id, desc, &initial, &minimum, &maximum, &step);
+
+         if (ret == 4)
+         {
+            step = 0.1f * (maximum - minimum);
+            ret = 5;
+         }
+
+         if (ret == 5)
+            meta->parameters.push_back({ id, desc, initial, minimum, maximum, step });
+      }
       else if (line.find("#pragma format ") == 0)
       {
          if (meta->rt_format != SLANG_FORMAT_UNKNOWN)

gfx/drivers_shader/glslang_util.hpp

@@ -63,8 +63,19 @@ enum glslang_format
    SLANG_FORMAT_UNKNOWN
 };
 
+struct glslang_parameter
+{
+   std::string id;
+   std::string desc;
+   float initial;
+   float minimum;
+   float maximum;
+   float step;
+};
+
 struct glslang_meta
 {
+   std::vector<glslang_parameter> parameters;
    std::string name;
    glslang_format rt_format = SLANG_FORMAT_UNKNOWN;
 };

gfx/drivers_shader/shader_vulkan.cpp

@@ -2736,7 +2736,6 @@ vulkan_filter_chain_t *vulkan_filter_chain_create_from_preset(
       return nullptr;
 
    video_shader_resolve_relative(shader.get(), path);
-   video_shader_resolve_parameters(conf.get(), shader.get());
 
    bool last_pass_is_fbo = shader->pass[shader->passes - 1].fbo.valid;
    auto tmpinfo          = *info;