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@@ -112,12 +112,11 @@ static inline void gl_write_params(struct gl_shader_parser *glsp)
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}
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static void gl_write_storage_var(struct gl_shader_parser *glsp,
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- struct shader_var *var, const char *storage,
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- const char *prefix);
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+ struct shader_var *var, bool input, const char *prefix);
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/* unwraps a structure that's used for input/output */
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static void gl_unwrap_storage_struct(struct gl_shader_parser *glsp,
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- struct shader_struct *st, const char *name, const char *storage,
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+ struct shader_struct *st, const char *name, bool input,
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const char *prefix)
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{
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struct dstr prefix_str;
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@@ -131,27 +130,23 @@ static void gl_unwrap_storage_struct(struct gl_shader_parser *glsp,
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for (i = 0; i < st->vars.num; i++) {
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struct shader_var *st_var = st->vars.array+i;
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- gl_write_storage_var(glsp, st_var, storage, prefix_str.array);
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+ gl_write_storage_var(glsp, st_var, input, prefix_str.array);
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}
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dstr_free(&prefix_str);
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}
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static void gl_write_storage_var(struct gl_shader_parser *glsp,
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- struct shader_var *var, const char *storage, const char *prefix)
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+ struct shader_var *var, bool input, const char *prefix)
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{
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struct shader_struct *st = shader_parser_getstruct(&glsp->parser,
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var->type);
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if (st) {
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- gl_unwrap_storage_struct(glsp, st, var->name, storage, prefix);
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+ gl_unwrap_storage_struct(glsp, st, var->name, input, prefix);
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} else {
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- struct gl_parser_attrib attrib = {0};
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-
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- if (storage) {
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- dstr_cat(&glsp->gl_string, storage);
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- dstr_cat(&glsp->gl_string, " ");
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- }
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+ struct gl_parser_attrib attrib = {{0}};
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+ dstr_cat(&glsp->gl_string, input ? "in " : "out ");
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if (prefix)
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dstr_cat(&attrib.name, prefix);
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@@ -162,6 +157,7 @@ static void gl_write_storage_var(struct gl_shader_parser *glsp,
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dstr_cat_dstr(&glsp->gl_string, &attrib.name);
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dstr_cat(&glsp->gl_string, ";\n");
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+ attrib.input = input;
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attrib.mapping = var->mapping;
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da_push_back(glsp->attribs, &attrib);
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}
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@@ -172,7 +168,7 @@ static inline void gl_write_inputs(struct gl_shader_parser *glsp,
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{
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size_t i;
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for (i = 0; i < main->params.num; i++)
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- gl_write_storage_var(glsp, main->params.array+i, "in",
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+ gl_write_storage_var(glsp, main->params.array+i, true,
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"inputval_");
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dstr_cat(&glsp->gl_string, "\n");
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}
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@@ -186,7 +182,7 @@ static void gl_write_outputs(struct gl_shader_parser *glsp,
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if (main->mapping)
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var.mapping = main->mapping;
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- gl_write_storage_var(glsp, &var, "out", NULL);
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+ gl_write_storage_var(glsp, &var, false, NULL);
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dstr_cat(&glsp->gl_string, "\n");
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}
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@@ -209,6 +205,14 @@ static void gl_write_struct(struct gl_shader_parser *glsp,
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dstr_cat(&glsp->gl_string, "};\n\n");
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}
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+static void gl_write_interface_block(struct gl_shader_parser *glsp)
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+{
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+ if (glsp->type == SHADER_VERTEX) {
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+ dstr_cat(&glsp->gl_string, "out gl_PerVertex {\n"
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+ "\tvec4 gl_Position;\n};\n\n");
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+ }
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+}
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+
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static inline void gl_write_structs(struct gl_shader_parser *glsp)
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{
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size_t i;
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@@ -245,7 +249,6 @@ static bool gl_write_mul(struct gl_shader_parser *glsp,
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struct cf_token **p_token)
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{
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struct cf_parser *cfp = &glsp->parser.cfp;
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- bool written = false;
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cfp->cur_token = *p_token;
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if (!next_token(cfp)) return false;
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@@ -266,7 +269,6 @@ static bool gl_write_saturate(struct gl_shader_parser *glsp,
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struct cf_token **p_token)
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{
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struct cf_parser *cfp = &glsp->parser.cfp;
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- bool written = false;
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cfp->cur_token = *p_token;
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if (!next_token(cfp)) return false;
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@@ -293,6 +295,9 @@ static inline bool gl_write_texture_call(struct gl_shader_parser *glsp,
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sampler_id = sp_getsampler(glsp, cfp->cur_token);
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if (sampler_id == -1) return false;
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+ if (!next_token(cfp)) return false;
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+ if (!token_is(cfp, ",")) return false;
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+
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var->gl_sampler_id = sampler_id;
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dstr_cat(&glsp->gl_string, call);
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@@ -417,7 +422,7 @@ static void gl_write_function(struct gl_shader_parser *glsp,
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dstr_cat(&glsp->gl_string, " ");
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if (strcmp(func->name, "main") == 0)
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- dstr_cat(&glsp->gl_string, "obs_main_x");
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+ dstr_cat(&glsp->gl_string, "_main_wrap");
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else
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dstr_cat(&glsp->gl_string, func->name);
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@@ -447,7 +452,21 @@ static inline void gl_write_functions(struct gl_shader_parser *glsp)
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}
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}
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-static void gl_write_main_storage_var(struct gl_shader_parser *glsp,
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+static inline void gl_write_main_interface_assign(
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+ struct gl_shader_parser *glsp, struct shader_var *var,
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+ const char *src)
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+{
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+ /* vertex shaders: write gl_Position */
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+ if (glsp->type == SHADER_VERTEX &&
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+ strcmp(var->mapping, "POSITION") == 0) {
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+ dstr_cat(&glsp->gl_string, "\tgl_Position = ");
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+ dstr_cat(&glsp->gl_string, src);
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+ dstr_cat(&glsp->gl_string, var->name);
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+ dstr_cat(&glsp->gl_string, ";\n");
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+ }
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+}
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+
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+static void gl_write_main_storage_assign(struct gl_shader_parser *glsp,
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struct shader_var *var, const char *dst, const char *src,
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bool input)
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{
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@@ -477,7 +496,7 @@ static void gl_write_main_storage_var(struct gl_shader_parser *glsp,
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for (i = 0; i < st->vars.num; i++) {
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struct shader_var *var = st->vars.array+i;
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- gl_write_main_storage_var(glsp, var, dst_copy.array,
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+ gl_write_main_storage_assign(glsp, var, dst_copy.array,
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src_copy.array, input);
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}
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@@ -490,81 +509,127 @@ static void gl_write_main_storage_var(struct gl_shader_parser *glsp,
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dstr_cat(&glsp->gl_string, src);
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dstr_cat(&glsp->gl_string, var->name);
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dstr_cat(&glsp->gl_string, ";\n");
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+
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+ if (!input)
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+ gl_write_main_interface_assign(glsp, var, src);
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}
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dstr_free(&dst_copy);
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}
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-static void gl_write_main_storage_output(struct gl_shader_parser *glsp,
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- bool input, const char *type)
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+static inline void gl_write_main_storage_inputs(struct gl_shader_parser *glsp,
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+ struct shader_func *main)
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{
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- struct shader_var var = {0};
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+ gl_write_main_storage_assign(glsp, main->params.array, NULL,
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+ "inputval_", true);
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+}
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- if (input) {
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- var.name = "inputval";
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- var.type = (char*)type;
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- gl_write_main_storage_var(glsp, &var, NULL, NULL, true);
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- } else {
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+static inline void gl_write_main_storage_outputs(struct gl_shader_parser *glsp,
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+ struct shader_func *main)
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+{
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+ /* we only do this *if* we're writing a struct, because otherwise
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+ * the call to 'main' already does the assignment for us */
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+ if (!main->mapping) {
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+ struct shader_var var = {0};
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var.name = "outputval";
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- var.type = (char*)type;
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- gl_write_main_storage_var(glsp, &var, NULL, NULL, false);
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+ var.type = (char*)main->return_type;
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+ dstr_cat(&glsp->gl_string, "\n");
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+ gl_write_main_storage_assign(glsp, &var, NULL, NULL, false);
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}
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}
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-static void gl_write_main(struct gl_shader_parser *glsp,
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- struct shader_func *main)
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+static inline void gl_write_main_vars(struct gl_shader_parser *glsp,
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+ struct shader_func *main_func)
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{
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size_t i;
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- dstr_cat(&glsp->gl_string, "void main(void)\n{\n");
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- for (i = 0; i < main->params.num; i++) {
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+ for (i = 0; i < main_func->params.num; i++) {
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dstr_cat(&glsp->gl_string, "\t");
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- dstr_cat(&glsp->gl_string, main->params.array[i].type);
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+ dstr_cat(&glsp->gl_string, main_func->params.array[i].type);
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dstr_cat(&glsp->gl_string, " ");
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- dstr_cat(&glsp->gl_string, main->params.array[i].name);
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+ dstr_cat(&glsp->gl_string, main_func->params.array[i].name);
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dstr_cat(&glsp->gl_string, ";\n");
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}
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- if (!main->mapping) {
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+ if (!main_func->mapping) {
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dstr_cat(&glsp->gl_string, "\t");
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- dstr_cat(&glsp->gl_string, main->return_type);
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+ dstr_cat(&glsp->gl_string, main_func->return_type);
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dstr_cat(&glsp->gl_string, " outputval;\n\n");
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}
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+}
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- /* gl_write_main_storage(glsp, true, main->params.array[0].type); */
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- gl_write_main_storage_var(glsp, main->params.array, NULL,
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- "inputval_", true);
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+static inline void gl_write_main_func_call(struct gl_shader_parser *glsp,
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+ struct shader_func *main_func)
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+{
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+ size_t i;
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+ dstr_cat(&glsp->gl_string, "\n\toutputval = _main_wrap(");
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- dstr_cat(&glsp->gl_string, "\n\toutputval = obs_main_x(");
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- for (i = 0; i < main->params.num; i++) {
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+ for (i = 0; i < main_func->params.num; i++) {
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if (i)
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dstr_cat(&glsp->gl_string, ", ");
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- dstr_cat(&glsp->gl_string, main->params.array[i].name);
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+ dstr_cat(&glsp->gl_string, main_func->params.array[i].name);
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}
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+
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dstr_cat(&glsp->gl_string, ");\n");
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+}
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- if (!main->mapping) {
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- dstr_cat(&glsp->gl_string, "\n");
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- gl_write_main_storage_output(glsp, false, main->return_type);
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- }
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+static void gl_write_main(struct gl_shader_parser *glsp,
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+ struct shader_func *main)
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+{
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+ dstr_cat(&glsp->gl_string, "void main(void)\n{\n");
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+
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+ gl_write_main_vars(glsp, main);
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+ gl_write_main_storage_inputs(glsp, main);
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+ gl_write_main_func_call(glsp, main);
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+ gl_write_main_storage_outputs(glsp, main);
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dstr_cat(&glsp->gl_string, "}\n");
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}
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+/* ugh, don't ask. I'll probably get rid of the need for this function later */
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+static void gl_rename_attributes(struct gl_shader_parser *glsp)
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+{
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+ size_t i = 0, input_idx = 0, output_idx = 0;
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+
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+ for (i = 0; i < glsp->attribs.num; i++) {
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+ struct gl_parser_attrib *attrib = glsp->attribs.array+i;
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+ struct dstr new_name = {0};
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+ const char *prefix;
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+ size_t val;
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+
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+ if (attrib->input) {
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+ prefix = glsp->input_prefix;
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+ val = input_idx++;
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+ } else {
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+ prefix = glsp->output_prefix;
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+ val = output_idx++;
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+ }
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+
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+ dstr_printf(&new_name, "%s%u", prefix, val);
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+ dstr_replace(&glsp->gl_string, attrib->name.array,
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+ new_name.array);
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+ dstr_move(&attrib->name, &new_name);
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+ }
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+}
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+
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static bool gl_shader_buildstring(struct gl_shader_parser *glsp)
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{
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- struct shader_func *main = shader_parser_getfunc(&glsp->parser, "main");
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- if (!main) {
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+ struct shader_func *main_func;
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+
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+ main_func = shader_parser_getfunc(&glsp->parser, "main");
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+ if (!main_func) {
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blog(LOG_ERROR, "function 'main' not found");
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return false;
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}
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- dstr_copy(&glsp->gl_string, "#version 140\n\n");
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+ dstr_copy(&glsp->gl_string, "#version 150\n\n");
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gl_write_params(glsp);
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- gl_write_inputs(glsp, main);
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- gl_write_outputs(glsp, main);
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+ gl_write_inputs(glsp, main_func);
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+ gl_write_outputs(glsp, main_func);
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+ gl_write_interface_block(glsp);
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gl_write_structs(glsp);
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gl_write_functions(glsp);
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- gl_write_main(glsp, main);
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+ gl_write_main(glsp, main_func);
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+ gl_rename_attributes(glsp);
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return true;
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}
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