material_compiler_compatibility_impl (forgot to push)

Author: Crisspl

include/nbl/builtin/glsl/ext/MitsubaLoader/material_compiler_compatibility_impl.glsl

@@ -0,0 +1,80 @@
+#ifndef _NBL_BUILTIN_GLSL_EXT_MITSUBA_LOADER_DESCRIPTORS_INCLUDED_
+#define _NBL_BUILTIN_GLSL_EXT_MITSUBA_LOADER_DESCRIPTORS_INCLUDED_
+
+#define _NBL_VT_DESCRIPTOR_SET 0
+#define _NBL_VT_PAGE_TABLE_BINDING 0
+
+#define _NBL_VT_FLOAT_VIEWS_BINDING 1 
+#define _NBL_VT_FLOAT_VIEWS_COUNT _NBL_EXT_MITSUBA_LOADER_VT_STORAGE_VIEW_COUNT
+#define _NBL_VT_FLOAT_VIEWS
+
+#define _NBL_VT_INT_VIEWS_BINDING 2
+#define _NBL_VT_INT_VIEWS_COUNT 0
+#define _NBL_VT_INT_VIEWS
+
+#define _NBL_VT_UINT_VIEWS_BINDING 3
+#define _NBL_VT_UINT_VIEWS_COUNT 0
+#define _NBL_VT_UINT_VIEWS
+#include <nbl/builtin/glsl/virtual_texturing/descriptors.glsl>
+
+layout(set = 0, binding = 2, std430) restrict readonly buffer VT_PrecomputedStuffSSBO
+{
+    uint pgtab_sz_log2;
+    float vtex_sz_rcp;
+    float phys_pg_tex_sz_rcp[_NBL_VT_MAX_PAGE_TABLE_LAYERS];
+    uint layer_to_sampler_ix[_NBL_VT_MAX_PAGE_TABLE_LAYERS];
+} VT_precomputed;
+
+layout(set = 0, binding = 3, std430) restrict readonly buffer INSTR_BUF
+{
+    nbl_glsl_MC_instr_t data[];
+} instr_buf;
+layout(set = 0, binding = 4, std430) restrict readonly buffer BSDF_BUF
+{
+    nbl_glsl_MC_bsdf_data_t data[];
+} bsdf_buf;
+#include <nbl/builtin/glsl/ext/MitsubaLoader/instance_data_struct.glsl>
+layout(set = 0, binding = 5, row_major, std430) readonly restrict buffer InstDataBuffer {
+    nbl_glsl_ext_Mitsuba_Loader_instance_data_t data[];
+} InstData;
+layout(set = 0, binding = 6, std430) restrict readonly buffer PREFETCH_INSTR_BUF
+{
+    nbl_glsl_MC_prefetch_instr_t data[];
+} prefetch_instr_buf;
+
+// Note: this GLSL header defines just those 3 material compiler functions.
+// The rest of them must still be defined by the user!
+nbl_glsl_MC_instr_t nbl_glsl_MC_fetchInstr(in uint ix)
+{
+    return instr_buf.data[ix];
+}
+nbl_glsl_MC_prefetch_instr_t nbl_glsl_MC_fetchPrefetchInstr(in uint ix)
+{
+    return prefetch_instr_buf.data[ix];
+}
+nbl_glsl_MC_bsdf_data_t nbl_glsl_MC_fetchBSDFData(in uint ix)
+{
+    return bsdf_buf.data[ix];
+}
+
+uint nbl_glsl_VT_layer2pid(in uint layer)
+{
+    return VT_precomputed.layer_to_sampler_ix[layer];
+}
+uint nbl_glsl_VT_getPgTabSzLog2()
+{
+    return VT_precomputed.pgtab_sz_log2;
+}
+float nbl_glsl_VT_getPhysPgTexSzRcp(in uint layer)
+{
+    return VT_precomputed.phys_pg_tex_sz_rcp[layer];
+}
+float nbl_glsl_VT_getVTexSzRcp()
+{
+    return VT_precomputed.vtex_sz_rcp;
+}
+#define _NBL_USER_PROVIDED_VIRTUAL_TEXTURING_FUNCTIONS_
+
+#include <nbl/builtin/glsl/virtual_texturing/functions.glsl/7/8>
+
+#endif