From 6995b0429c5b42d41cc4d1851ea1f2272f121a26 Mon Sep 17 00:00:00 2001 From: jfons Date: Sun, 25 Apr 2021 23:36:39 +0200 Subject: Assorted fixes to UV unwrapping and GPU lightmapper Various fixes to UV2 unwrapping and the GPU lightmapper. Listed here for context in case of git blame/bisect: * Fix UV2 unwrapping on import, also cleaned up the unwrap cache code. * Fix saving of RGBA images in EXR format. * Fixes to the GPU lightmapper: - Added padding between atlas elements, avoids bleeding. - Remove old SDF generation code. - Fix baked attenuation for Omni/Spot lights. - Fix baking of material properties onto UV2 (wireframe was wrongly used before). - Disable statically baked lights for objects that have a lightmap texture to avoid applying the same light twice. - Fix lightmap pairing in RendererSceneCull. - Fix UV2 array generated from `RenderingServer::mesh_surface_get_arrays()`. - Port autoexposure fix for OIDN from 3.x. - Save debug textures as EXR when using floating point format. --- modules/xatlas_unwrap/register_types.cpp | 210 +++++++++++++++---------------- 1 file changed, 99 insertions(+), 111 deletions(-) (limited to 'modules/xatlas_unwrap') diff --git a/modules/xatlas_unwrap/register_types.cpp b/modules/xatlas_unwrap/register_types.cpp index e1f9521a48..8913ef1b65 100644 --- a/modules/xatlas_unwrap/register_types.cpp +++ b/modules/xatlas_unwrap/register_types.cpp @@ -29,26 +29,19 @@ /*************************************************************************/ #include "register_types.h" - -#include "core/error/error_macros.h" - #include "core/crypto/crypto_core.h" - #include "thirdparty/xatlas/xatlas.h" -#include -#include +extern bool (*array_mesh_lightmap_unwrap_callback)(float p_texel_size, const float *p_vertices, const float *p_normals, int p_vertex_count, const int *p_indices, int p_index_count, const uint8_t *p_cache_data, bool *r_use_cache, uint8_t **r_mesh_cache, int *r_mesh_cache_size, float **r_uv, int **r_vertex, int *r_vertex_count, int **r_index, int *r_index_count, int *r_size_hint_x, int *r_size_hint_y); -extern bool (*array_mesh_lightmap_unwrap_callback)(float p_texel_size, const float *p_vertices, const float *p_normals, int p_vertex_count, const int *p_indices, int p_index_count, float **r_uv, int **r_vertex, int *r_vertex_count, int **r_index, int *r_index_count, int *r_size_hint_x, int *r_size_hint_y, int *&r_cache_data, unsigned int &r_cache_size, bool &r_used_cache); - -bool xatlas_mesh_lightmap_unwrap_callback(float p_texel_size, const float *p_vertices, const float *p_normals, int p_vertex_count, const int *p_indices, int p_index_count, float **r_uvs, int **r_vertices, int *r_vertex_count, int **r_indices, int *r_index_count, int *r_size_hint_x, int *r_size_hint_y, int *&r_cache_data, unsigned int &r_cache_size, bool &r_used_cache) { +bool xatlas_mesh_lightmap_unwrap_callback(float p_texel_size, const float *p_vertices, const float *p_normals, int p_vertex_count, const int *p_indices, int p_index_count, const uint8_t *p_cache_data, bool *r_use_cache, uint8_t **r_mesh_cache, int *r_mesh_cache_size, float **r_uv, int **r_vertex, int *r_vertex_count, int **r_index, int *r_index_count, int *r_size_hint_x, int *r_size_hint_y) { CryptoCore::MD5Context ctx; ctx.start(); ctx.update((unsigned char *)&p_texel_size, sizeof(float)); ctx.update((unsigned char *)p_indices, sizeof(int) * p_index_count); - ctx.update((unsigned char *)p_vertices, sizeof(float) * p_vertex_count); - ctx.update((unsigned char *)p_normals, sizeof(float) * p_vertex_count); + ctx.update((unsigned char *)p_vertices, sizeof(float) * p_vertex_count * 3); + ctx.update((unsigned char *)p_normals, sizeof(float) * p_vertex_count * 3); unsigned char hash[16]; ctx.finish(hash); @@ -56,38 +49,37 @@ bool xatlas_mesh_lightmap_unwrap_callback(float p_texel_size, const float *p_ver bool cached = false; unsigned int cache_idx = 0; - if (r_used_cache && r_cache_size) { - //Check if hash is in cache data + *r_mesh_cache = nullptr; + *r_mesh_cache_size = 0; - int *cache_data = r_cache_data; + if (p_cache_data) { + //Check if hash is in cache data + int *cache_data = (int *)p_cache_data; int n_entries = cache_data[0]; - unsigned int r_idx = 1; + unsigned int read_idx = 1; for (int i = 0; i < n_entries; ++i) { - if (memcmp(&cache_data[r_idx], hash, 16) == 0) { + if (memcmp(&cache_data[read_idx], hash, 16) == 0) { cached = true; - cache_idx = r_idx; + cache_idx = read_idx; break; } - r_idx += 4; // hash - r_idx += 2; // size hint + read_idx += 4; // hash + read_idx += 2; // size hint - int vertex_count = cache_data[r_idx]; - r_idx += 1; // vertex count - r_idx += vertex_count; // vertex - r_idx += vertex_count * 2; // uvs + int vertex_count = cache_data[read_idx]; + read_idx += 1; // vertex count + read_idx += vertex_count; // vertex + read_idx += vertex_count * 2; // uvs - int index_count = cache_data[r_idx]; - r_idx += 1; // index count - r_idx += index_count; // indices + int index_count = cache_data[read_idx]; + read_idx += 1; // index count + read_idx += index_count; // indices } } - if (r_used_cache && cached) { - int *cache_data = r_cache_data; - - // Return cache data pointer to the caller - r_cache_data = &cache_data[cache_idx]; + if (cached) { + int *cache_data = (int *)p_cache_data; cache_idx += 4; @@ -99,96 +91,92 @@ bool xatlas_mesh_lightmap_unwrap_callback(float p_texel_size, const float *p_ver // Load vertices *r_vertex_count = cache_data[cache_idx]; cache_idx++; - *r_vertices = &cache_data[cache_idx]; + *r_vertex = &cache_data[cache_idx]; cache_idx += *r_vertex_count; // Load UVs - *r_uvs = (float *)&cache_data[cache_idx]; + *r_uv = (float *)&cache_data[cache_idx]; cache_idx += *r_vertex_count * 2; // Load indices *r_index_count = cache_data[cache_idx]; cache_idx++; - *r_indices = &cache_data[cache_idx]; - - // Return cache data size to the caller - r_cache_size = sizeof(int) * (4 + 2 + 1 + *r_vertex_count + (*r_vertex_count * 2) + 1 + *r_index_count); // hash + size hint + vertex_count + vertices + uvs + index_count + indices - r_used_cache = true; - return true; - } - - //set up input mesh - xatlas::MeshDecl input_mesh; - input_mesh.indexData = p_indices; - input_mesh.indexCount = p_index_count; - input_mesh.indexFormat = xatlas::IndexFormat::UInt32; - - input_mesh.vertexCount = p_vertex_count; - input_mesh.vertexPositionData = p_vertices; - input_mesh.vertexPositionStride = sizeof(float) * 3; - input_mesh.vertexNormalData = p_normals; - input_mesh.vertexNormalStride = sizeof(uint32_t) * 3; - input_mesh.vertexUvData = nullptr; - input_mesh.vertexUvStride = 0; - - xatlas::ChartOptions chart_options; - xatlas::PackOptions pack_options; - - pack_options.maxChartSize = 4096; - pack_options.blockAlign = true; - pack_options.padding = 1; - pack_options.texelsPerUnit = 1.0 / p_texel_size; + *r_index = &cache_data[cache_idx]; + } else { + // set up input mesh + xatlas::MeshDecl input_mesh; + input_mesh.indexData = p_indices; + input_mesh.indexCount = p_index_count; + input_mesh.indexFormat = xatlas::IndexFormat::UInt32; + + input_mesh.vertexCount = p_vertex_count; + input_mesh.vertexPositionData = p_vertices; + input_mesh.vertexPositionStride = sizeof(float) * 3; + input_mesh.vertexNormalData = p_normals; + input_mesh.vertexNormalStride = sizeof(uint32_t) * 3; + input_mesh.vertexUvData = NULL; + input_mesh.vertexUvStride = 0; + + xatlas::ChartOptions chart_options; + chart_options.fixWinding = true; + + xatlas::PackOptions pack_options; + pack_options.padding = 1; + pack_options.maxChartSize = 4094; // Lightmap atlassing needs 2 for padding between meshes, so 4096-2 + pack_options.blockAlign = true; + pack_options.texelsPerUnit = 1.0 / p_texel_size; + + xatlas::Atlas *atlas = xatlas::Create(); + + xatlas::AddMeshError err = xatlas::AddMesh(atlas, input_mesh, 1); + ERR_FAIL_COND_V_MSG(err != xatlas::AddMeshError::Success, false, xatlas::StringForEnum(err)); + + xatlas::Generate(atlas, chart_options, pack_options); + + *r_size_hint_x = atlas->width; + *r_size_hint_y = atlas->height; + + float w = *r_size_hint_x; + float h = *r_size_hint_y; + + if (w == 0 || h == 0) { + xatlas::Destroy(atlas); + return false; //could not bake because there is no area + } - xatlas::Atlas *atlas = xatlas::Create(); - printf("Adding mesh..\n"); - xatlas::AddMeshError err = xatlas::AddMesh(atlas, input_mesh, 1); - ERR_FAIL_COND_V_MSG(err != xatlas::AddMeshError::Success, false, xatlas::StringForEnum(err)); + const xatlas::Mesh &output = atlas->meshes[0]; + + *r_vertex = (int *)memalloc(sizeof(int) * output.vertexCount); + ERR_FAIL_NULL_V_MSG(*r_vertex, false, "Out of memory."); + *r_uv = (float *)memalloc(sizeof(float) * output.vertexCount * 2); + ERR_FAIL_NULL_V_MSG(*r_uv, false, "Out of memory."); + *r_index = (int *)memalloc(sizeof(int) * output.indexCount); + ERR_FAIL_NULL_V_MSG(*r_index, false, "Out of memory."); + + float max_x = 0; + float max_y = 0; + for (uint32_t i = 0; i < output.vertexCount; i++) { + (*r_vertex)[i] = output.vertexArray[i].xref; + (*r_uv)[i * 2 + 0] = output.vertexArray[i].uv[0] / w; + (*r_uv)[i * 2 + 1] = output.vertexArray[i].uv[1] / h; + max_x = MAX(max_x, output.vertexArray[i].uv[0]); + max_y = MAX(max_y, output.vertexArray[i].uv[1]); + } - printf("Generate..\n"); - xatlas::Generate(atlas, chart_options, pack_options); + *r_vertex_count = output.vertexCount; - *r_size_hint_x = atlas->width; - *r_size_hint_y = atlas->height; + for (uint32_t i = 0; i < output.indexCount; i++) { + (*r_index)[i] = output.indexArray[i]; + } - float w = *r_size_hint_x; - float h = *r_size_hint_y; + *r_index_count = output.indexCount; - if (w == 0 || h == 0) { xatlas::Destroy(atlas); - return false; //could not bake because there is no area - } - - const xatlas::Mesh &output = atlas->meshes[0]; - - *r_vertices = (int *)malloc(sizeof(int) * output.vertexCount); - ERR_FAIL_NULL_V_MSG(*r_vertices, false, "Out of memory."); - *r_uvs = (float *)malloc(sizeof(float) * output.vertexCount * 2); - ERR_FAIL_NULL_V_MSG(*r_uvs, false, "Out of memory."); - *r_indices = (int *)malloc(sizeof(int) * output.indexCount); - ERR_FAIL_NULL_V_MSG(*r_indices, false, "Out of memory."); - - float max_x = 0.0; - float max_y = 0.0; - for (uint32_t i = 0; i < output.vertexCount; i++) { - (*r_vertices)[i] = output.vertexArray[i].xref; - (*r_uvs)[i * 2 + 0] = output.vertexArray[i].uv[0] / w; - (*r_uvs)[i * 2 + 1] = output.vertexArray[i].uv[1] / h; - max_x = MAX(max_x, output.vertexArray[i].uv[0]); - max_y = MAX(max_y, output.vertexArray[i].uv[1]); } - printf("Final texture size: %f,%f - max %f,%f\n", w, h, max_x, max_y); - *r_vertex_count = output.vertexCount; + if (*r_use_cache) { + // Build cache data for current mesh - for (uint32_t i = 0; i < output.indexCount; i++) { - (*r_indices)[i] = output.indexArray[i]; - } - - *r_index_count = output.indexCount; - - xatlas::Destroy(atlas); - - if (r_used_cache) { unsigned int new_cache_size = 4 + 2 + 1 + *r_vertex_count + (*r_vertex_count * 2) + 1 + *r_index_count; // hash + size hint + vertex_count + vertices + uvs + index_count + indices new_cache_size *= sizeof(int); int *new_cache_data = (int *)memalloc(new_cache_size); @@ -208,11 +196,11 @@ bool xatlas_mesh_lightmap_unwrap_callback(float p_texel_size, const float *p_ver new_cache_idx++; // vertices - memcpy(&new_cache_data[new_cache_idx], *r_vertices, sizeof(int) * *r_vertex_count); + memcpy(&new_cache_data[new_cache_idx], *r_vertex, sizeof(int) * (*r_vertex_count)); new_cache_idx += *r_vertex_count; // uvs - memcpy(&new_cache_data[new_cache_idx], *r_uvs, sizeof(float) * *r_vertex_count * 2); + memcpy(&new_cache_data[new_cache_idx], *r_uv, sizeof(float) * (*r_vertex_count) * 2); new_cache_idx += *r_vertex_count * 2; // index count @@ -220,15 +208,15 @@ bool xatlas_mesh_lightmap_unwrap_callback(float p_texel_size, const float *p_ver new_cache_idx++; // indices - memcpy(&new_cache_data[new_cache_idx], *r_indices, sizeof(int) * *r_index_count); - new_cache_idx += *r_index_count; + memcpy(&new_cache_data[new_cache_idx], *r_index, sizeof(int) * (*r_index_count)); // Return cache data to the caller - r_cache_data = new_cache_data; - r_cache_size = new_cache_size; - r_used_cache = false; + *r_mesh_cache = (uint8_t *)new_cache_data; + *r_mesh_cache_size = new_cache_size; } + *r_use_cache = cached; // Return whether cache was used. + return true; } -- cgit v1.2.3