mirror of https://github.com/bjornbytes/lovr.git
ModelData exposes its meshes;
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parent
bfa155a103
commit
e5efe890f9
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@ -2,6 +2,7 @@
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#include "data/modelData.h"
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#include "core/maf.h"
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#include "core/map.h"
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#include "resources/shaders.h"
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#include <lua.h>
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#include <lauxlib.h>
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@ -191,6 +192,153 @@ static int l_lovrModelDataGetNodeSkin(lua_State* L) {
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return 1;
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}
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static int l_lovrModelDataGetMeshCount(lua_State* L) {
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ModelData* model = luax_checktype(L, 1, ModelData);
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lua_pushinteger(L, model->primitiveCount);
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return 1;
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}
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static int l_lovrModelDataGetMeshDrawMode(lua_State* L) {
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ModelData* model = luax_checktype(L, 1, ModelData);
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uint32_t index = luaL_checkinteger(L, 2) - 1;
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lovrCheck(index < model->primitiveCount, "Invalid mesh index '%d'", index + 1);
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ModelPrimitive* mesh = &model->primitives[index];
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luax_pushenum(L, DrawMode, mesh->mode);
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return 1;
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}
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static int l_lovrModelDataGetMeshMaterial(lua_State* L) {
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ModelData* model = luax_checktype(L, 1, ModelData);
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uint32_t index = luaL_checkinteger(L, 2) - 1;
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lovrCheck(index < model->primitiveCount, "Invalid mesh index '%d'", index + 1);
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ModelPrimitive* mesh = &model->primitives[index];
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if (mesh->material == ~0u) {
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lua_pushnil(L);
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} else {
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lua_pushinteger(L, mesh->material + 1);
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}
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return 1;
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}
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static int l_lovrModelDataGetMeshVertexCount(lua_State* L) {
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ModelData* model = luax_checktype(L, 1, ModelData);
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uint32_t index = luaL_checkinteger(L, 2) - 1;
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lovrCheck(index < model->primitiveCount, "Invalid mesh index '%d'", index + 1);
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ModelPrimitive* mesh = &model->primitives[index];
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lua_pushinteger(L, mesh->attributes[ATTR_POSITION] ? mesh->attributes[ATTR_POSITION]->count : 0);
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return 1;
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}
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static int l_lovrModelDataGetMeshIndexCount(lua_State* L) {
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ModelData* model = luax_checktype(L, 1, ModelData);
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uint32_t index = luaL_checkinteger(L, 2) - 1;
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lovrCheck(index < model->primitiveCount, "Invalid mesh index '%d'", index + 1);
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ModelPrimitive* mesh = &model->primitives[index];
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lua_pushinteger(L, mesh->indices ? mesh->indices->count : 0);
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return 1;
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}
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static int l_lovrModelDataGetMeshVertexFormat(lua_State* L) {
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ModelData* model = luax_checktype(L, 1, ModelData);
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uint32_t index = luaL_checkinteger(L, 2) - 1;
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lovrCheck(index < model->primitiveCount, "Invalid mesh index '%d'", index + 1);
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ModelPrimitive* mesh = &model->primitives[index];
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lua_newtable(L);
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uint32_t count = 0;
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for (uint32_t i = 0; i < MAX_DEFAULT_ATTRIBUTES; i++) {
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ModelAttribute* attribute = mesh->attributes[i];
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if (!attribute) continue;
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lua_createtable(L, 6, 0);
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lua_pushstring(L, lovrShaderAttributeNames[i]);
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lua_rawseti(L, -2, 1);
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luax_pushenum(L, AttributeType, attribute->type);
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lua_rawseti(L, -2, 2);
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lua_pushinteger(L, attribute->components);
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lua_rawseti(L, -2, 3);
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lua_pushinteger(L, model->buffers[attribute->buffer].blob + 1);
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lua_rawseti(L, -2, 4);
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lua_pushinteger(L, model->buffers[attribute->buffer].offset + attribute->offset);
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lua_rawseti(L, -2, 5);
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lua_pushinteger(L, model->buffers[attribute->buffer].stride);
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lua_rawseti(L, -2, 6);
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lua_rawseti(L, -2, ++count);
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}
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return 1;
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}
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static int l_lovrModelDataGetMeshIndexFormat(lua_State* L) {
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ModelData* model = luax_checktype(L, 1, ModelData);
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uint32_t index = luaL_checkinteger(L, 2) - 1;
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lovrCheck(index < model->primitiveCount, "Invalid mesh index '%d'", index + 1);
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ModelPrimitive* mesh = &model->primitives[index];
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if (!mesh->indices) return lua_pushnil(L), 1;
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luax_pushenum(L, AttributeType, mesh->indices->type);
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lua_pushinteger(L, model->buffers[mesh->indices->buffer].blob + 1);
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lua_pushinteger(L, model->buffers[mesh->indices->buffer].offset + mesh->indices->offset);
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lua_pushinteger(L, model->buffers[mesh->indices->buffer].stride);
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return 4;
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}
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static int l_lovrModelDataGetMeshVertex(lua_State* L) {
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ModelData* model = luax_checktype(L, 1, ModelData);
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uint32_t index = luaL_checkinteger(L, 2) - 1;
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lovrCheck(index < model->primitiveCount, "Invalid mesh index '%d'", index + 1);
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ModelPrimitive* mesh = &model->primitives[index];
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uint32_t vertex = luaL_checkinteger(L, 3) - 1;
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uint32_t vertexCount = mesh->attributes[ATTR_POSITION] ? mesh->attributes[ATTR_POSITION]->count : 0;
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lovrCheck(vertex < vertexCount, "Invalid vertex index '%d'", vertex + 1);
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uint32_t total = 0;
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for (uint32_t i = 0; i < MAX_DEFAULT_ATTRIBUTES; i++) {
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ModelAttribute* attribute = mesh->attributes[i];
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if (!attribute) continue;
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AttributeData data = { .raw = model->buffers[attribute->buffer].data };
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data.u8 += attribute->offset;
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data.u8 += vertex * model->buffers[attribute->buffer].stride;
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for (uint32_t j = 0; j < attribute->components; j++) {
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switch (attribute->type) {
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case I8: lua_pushinteger(L, data.i8[j]); break;
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case U8: lua_pushinteger(L, data.u8[j]); break;
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case I16: lua_pushinteger(L, data.i16[j]); break;
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case U16: lua_pushinteger(L, data.u16[j]); break;
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case I32: lua_pushinteger(L, data.i32[j]); break;
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case U32: lua_pushinteger(L, data.u32[j]); break;
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case F32: lua_pushnumber(L, data.f32[j]); break;
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default: break;
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}
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}
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total += attribute->components;
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}
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return total;
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}
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static int l_lovrModelDataGetMeshIndex(lua_State* L) {
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ModelData* model = luax_checktype(L, 1, ModelData);
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uint32_t meshIndex = luaL_checkinteger(L, 2) - 1;
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lovrCheck(meshIndex < model->primitiveCount, "Invalid mesh index '%d'", meshIndex + 1);
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ModelPrimitive* mesh = &model->primitives[meshIndex];
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uint32_t index = luaL_checkinteger(L, 3) - 1;
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uint32_t indexCount = mesh->indices ? mesh->indices->count : 0;
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lovrCheck(index < indexCount, "Invalid index index '%d'", index + 1);
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AttributeData data = { .raw = model->buffers[mesh->indices->buffer].data };
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data.u8 += mesh->indices->offset;
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switch (mesh->indices->type) {
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case U16: lua_pushinteger(L, data.u16[index]); return 1;
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case U32: lua_pushinteger(L, data.u32[index]); return 1;
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default: lovrThrow("Unreachable");
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}
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}
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const luaL_Reg lovrModelData[] = {
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{ "getBlobCount", l_lovrModelDataGetBlobCount },
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{ "getBlob", l_lovrModelDataGetBlob },
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@ -206,5 +354,15 @@ const luaL_Reg lovrModelData[] = {
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{ "getNodeChildren", l_lovrModelDataGetNodeChildren },
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{ "getNodeMeshes", l_lovrModelDataGetNodeMeshes },
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{ "getNodeSkin", l_lovrModelDataGetNodeSkin },
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{ "getMeshCount", l_lovrModelDataGetMeshCount },
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{ "getMeshDrawMode", l_lovrModelDataGetMeshDrawMode },
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{ "getMeshMaterial", l_lovrModelDataGetMeshMaterial },
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{ "getMeshVertexCount", l_lovrModelDataGetMeshVertexCount },
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{ "getMeshIndexCount", l_lovrModelDataGetMeshIndexCount },
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{ "getMeshVertexFormat", l_lovrModelDataGetMeshVertexFormat },
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{ "getMeshIndexFormat", l_lovrModelDataGetMeshIndexFormat },
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{ "getMeshVertex", l_lovrModelDataGetMeshVertex },
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{ "getMeshIndex", l_lovrModelDataGetMeshIndex },
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{ "getMeshIndex", l_lovrModelDataGetMeshIndex },
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{ NULL, NULL }
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};
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