Adding upstream version 6.338.2.upstream/6.338.2upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 64 insertions, 0 deletions

diff --git a/src/glsl/spirv.c b/src/glsl/spirv.c
new file mode 100644
index 0000000..8317ed7
--- /dev/null
+++ b/src/glsl/spirv.c
@@ -0,0 +1,64 @@
+/*
+ * This file is part of libplacebo.
+ *
+ * libplacebo is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * libplacebo is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with libplacebo. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "spirv.h"
+
+extern const struct spirv_compiler pl_spirv_shaderc;
+extern const struct spirv_compiler pl_spirv_glslang;
+
+static const struct spirv_compiler *compilers[] = {
+#ifdef PL_HAVE_SHADERC
+    &pl_spirv_shaderc,
+#endif
+#ifdef PL_HAVE_GLSLANG
+    &pl_spirv_glslang,
+#endif
+};
+
+pl_spirv pl_spirv_create(pl_log log, struct pl_spirv_version spirv_ver)
+{
+    for (int i = 0; i < PL_ARRAY_SIZE(compilers); i++) {
+        pl_spirv spirv = compilers[i]->create(log, spirv_ver);
+        if (!spirv)
+            continue;
+
+        pl_info(log, "Initialized SPIR-V compiler '%s'", compilers[i]->name);
+        return spirv;
+    }
+
+    pl_fatal(log, "Failed initializing any SPIR-V compiler! Maybe libplacebo "
+             "was built without support for either libshaderc or glslang?");
+    return NULL;
+}
+
+void pl_spirv_destroy(pl_spirv *pspirv)
+{
+    pl_spirv spirv = *pspirv;
+    if (!spirv)
+        return;
+
+    spirv->impl->destroy(spirv);
+    *pspirv = NULL;
+}
+
+pl_str pl_spirv_compile_glsl(pl_spirv spirv, void *alloc,
+                             struct pl_glsl_version glsl,
+                             enum glsl_shader_stage stage,
+                             const char *shader)
+{
+    return spirv->impl->compile(spirv, alloc, glsl, stage, shader);
+}