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Vulkan: Add #include support to slang shaders.

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This commit is contained in:
Hans-Kristian Arntzen 2016-03-21 12:14:11 +01:00
parent 5dcb78ea21
commit 72cdd37ad2
1 changed files with 32 additions and 6 deletions
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38
gfx/drivers_shader/glslang_util.cpp
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@ -24,14 +24,16 @@
#include "glslang.hpp" #include "glslang.hpp"
#include "../../general.h" #include "../../general.h"
#include "../../libretro-common/include/file/file_path.h"
using namespace std; using namespace std;
bool read_file(const char *path, vector<string> *output) static bool read_shader_file(const char *path, vector<string> *output)
{ {
char *buf = nullptr; char *buf = nullptr;
ssize_t len = 0; ssize_t len = 0;
struct string_list *list = NULL; struct string_list *list = NULL;
char include_path[PATH_MAX];
if (retro_read_file(path, (void**)&buf, &len) < 0) if (retro_read_file(path, (void**)&buf, &len) < 0)
{ {
@ -54,15 +56,39 @@ bool read_file(const char *path, vector<string> *output)
return false; return false;
} }
output->clear();
for (size_t i = 0; i < list->size; i++) for (size_t i = 0; i < list->size; i++)
output->push_back(list->elems[i].data); {
const char *line = list->elems[i].data;
if (strstr(line, "#include ") == line)
{
char *c = (char*)strchr(line, '"');
if (!c)
{
RARCH_ERR("Invalid include statement \"%s\".\n", line);
return false;
}
c++;
char *closing = (char*)strchr(c, '"');
if (!closing)
{
RARCH_ERR("Invalid include statement \"%s\".\n", line);
return false;
}
*closing = '\0';
fill_pathname_resolve_relative(include_path, path, c, sizeof(include_path));
if (!read_shader_file(include_path, output))
return false;
}
else
output->push_back(line);
}
string_list_free(list); string_list_free(list);
return true; return true;
} }
string build_stage_source(const vector<string> &lines, const char *stage) static string build_stage_source(const vector<string> &lines, const char *stage)
{ {
ostringstream str; ostringstream str;
bool active = true; bool active = true;
@ -99,7 +125,7 @@ bool glslang_compile_shader(const char *shader_path, glslang_output *output)
vector<string> lines; vector<string> lines;
RARCH_LOG("Compiling shader \"%s\".\n", shader_path); RARCH_LOG("Compiling shader \"%s\".\n", shader_path);
if (!read_file(shader_path, &lines)) if (!read_shader_file(shader_path, &lines))
return false; return false;
auto &header = lines.front(); auto &header = lines.front();