From bbbcdd725ac8786722b6d327be5ae91344ec7d96 Mon Sep 17 00:00:00 2001 From: clayjohn Date: Fri, 24 Jun 2022 11:22:26 -0700 Subject: Remove requirement to have vertex positions when creating a mesh. Meshes can now be constructed from an index buffer alone --- drivers/gles3/rasterizer_scene_gles3.cpp | 5 +++-- drivers/gles3/storage/material_storage.cpp | 4 ++-- drivers/gles3/storage/mesh_storage.cpp | 20 +++++++++++++------- drivers/gles3/storage/mesh_storage.h | 8 ++++---- 4 files changed, 22 insertions(+), 15 deletions(-) (limited to 'drivers/gles3') diff --git a/drivers/gles3/rasterizer_scene_gles3.cpp b/drivers/gles3/rasterizer_scene_gles3.cpp index 3e416bc615..9bbe960d86 100644 --- a/drivers/gles3/rasterizer_scene_gles3.cpp +++ b/drivers/gles3/rasterizer_scene_gles3.cpp @@ -867,7 +867,6 @@ void RasterizerSceneGLES3::_update_sky_radiance(RID p_env, const Projection &p_p GLES3::MaterialStorage::get_singleton()->shaders.sky_shader.version_set_uniform(SkyShaderGLES3::TIME, time, shader_data->version, SkyShaderGLES3::MODE_CUBEMAP); GLES3::MaterialStorage::get_singleton()->shaders.sky_shader.version_set_uniform(SkyShaderGLES3::PROJECTION, cm.matrix[2][0], cm.matrix[0][0], cm.matrix[2][1], cm.matrix[1][1], shader_data->version, SkyShaderGLES3::MODE_CUBEMAP); - // Bind a vertex array or else OpenGL complains. We won't actually use it glBindVertexArray(sky_globals.screen_triangle_array); glViewport(0, 0, sky->radiance_size, sky->radiance_size); @@ -2150,7 +2149,9 @@ void RasterizerSceneGLES3::_render_list_template(RenderListParameters *p_params, index_array_gl = mesh_storage->mesh_surface_get_index_buffer(mesh_surface, surf->lod_index); if (prev_vertex_array_gl != vertex_array_gl) { - glBindVertexArray(vertex_array_gl); + if (vertex_array_gl != 0) { + glBindVertexArray(vertex_array_gl); + } prev_vertex_array_gl = vertex_array_gl; } diff --git a/drivers/gles3/storage/material_storage.cpp b/drivers/gles3/storage/material_storage.cpp index 26441fc726..5ed5ec51b9 100644 --- a/drivers/gles3/storage/material_storage.cpp +++ b/drivers/gles3/storage/material_storage.cpp @@ -1450,8 +1450,8 @@ MaterialStorage::MaterialStorage() { actions.renames["UV2"] = "uv2_interp"; actions.renames["COLOR"] = "color_interp"; actions.renames["POINT_SIZE"] = "gl_PointSize"; - actions.renames["INSTANCE_ID"] = "gl_InstanceIndex"; - actions.renames["VERTEX_ID"] = "gl_VertexIndex"; + actions.renames["INSTANCE_ID"] = "gl_InstanceID"; + actions.renames["VERTEX_ID"] = "gl_VertexID"; actions.renames["ALPHA_SCISSOR_THRESHOLD"] = "alpha_scissor_threshold"; actions.renames["ALPHA_HASH_SCALE"] = "alpha_hash_scale"; diff --git a/drivers/gles3/storage/mesh_storage.cpp b/drivers/gles3/storage/mesh_storage.cpp index dee715150b..38de0220e3 100644 --- a/drivers/gles3/storage/mesh_storage.cpp +++ b/drivers/gles3/storage/mesh_storage.cpp @@ -186,11 +186,13 @@ void MeshStorage::mesh_add_surface(RID p_mesh, const RS::SurfaceData &p_surface) s->format = p_surface.format; s->primitive = p_surface.primitive; - glGenBuffers(1, &s->vertex_buffer); - glBindBuffer(GL_ARRAY_BUFFER, s->vertex_buffer); - glBufferData(GL_ARRAY_BUFFER, p_surface.vertex_data.size(), p_surface.vertex_data.ptr(), (s->format & RS::ARRAY_FLAG_USE_DYNAMIC_UPDATE) ? GL_DYNAMIC_DRAW : GL_STATIC_DRAW); - glBindBuffer(GL_ARRAY_BUFFER, 0); //unbind - s->vertex_buffer_size = p_surface.vertex_data.size(); + if (p_surface.vertex_data.size()) { + glGenBuffers(1, &s->vertex_buffer); + glBindBuffer(GL_ARRAY_BUFFER, s->vertex_buffer); + glBufferData(GL_ARRAY_BUFFER, p_surface.vertex_data.size(), p_surface.vertex_data.ptr(), (s->format & RS::ARRAY_FLAG_USE_DYNAMIC_UPDATE) ? GL_DYNAMIC_DRAW : GL_STATIC_DRAW); + glBindBuffer(GL_ARRAY_BUFFER, 0); //unbind + s->vertex_buffer_size = p_surface.vertex_data.size(); + } if (p_surface.attribute_data.size()) { glGenBuffers(1, &s->attribute_buffer); @@ -214,7 +216,7 @@ void MeshStorage::mesh_add_surface(RID p_mesh, const RS::SurfaceData &p_surface) } if (p_surface.index_count) { - bool is_index_16 = p_surface.vertex_count <= 65536; + bool is_index_16 = p_surface.vertex_count <= 65536 && p_surface.vertex_count > 0; glGenBuffers(1, &s->index_buffer); glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, s->index_buffer); glBufferData(GL_ELEMENT_ARRAY_BUFFER, p_surface.index_data.size(), p_surface.index_data.ptr(), GL_STATIC_DRAW); @@ -238,6 +240,8 @@ void MeshStorage::mesh_add_surface(RID p_mesh, const RS::SurfaceData &p_surface) } } + ERR_FAIL_COND_MSG(!p_surface.index_count && !p_surface.vertex_count, "Meshes must contain a vertex array, an index array, or both"); + s->aabb = p_surface.aabb; s->bone_aabbs = p_surface.bone_aabbs; //only really useful for returning them. @@ -340,7 +344,9 @@ RS::SurfaceData MeshStorage::mesh_get_surface(RID p_mesh, int p_surface) const { RS::SurfaceData sd; sd.format = s.format; - sd.vertex_data = Utilities::buffer_get_data(GL_ARRAY_BUFFER, s.vertex_buffer, s.vertex_buffer_size); + if (s.vertex_buffer != 0) { + sd.vertex_data = Utilities::buffer_get_data(GL_ARRAY_BUFFER, s.vertex_buffer, s.vertex_buffer_size); + } if (s.attribute_buffer != 0) { sd.attribute_data = Utilities::buffer_get_data(GL_ARRAY_BUFFER, s.attribute_buffer, s.attribute_buffer_size); diff --git a/drivers/gles3/storage/mesh_storage.h b/drivers/gles3/storage/mesh_storage.h index 339380b3b0..74f5800795 100644 --- a/drivers/gles3/storage/mesh_storage.h +++ b/drivers/gles3/storage/mesh_storage.h @@ -75,7 +75,7 @@ struct Mesh { // Cache vertex arrays so they can be created struct Version { uint32_t input_mask = 0; - GLuint vertex_array; + GLuint vertex_array = 0; Attrib attribs[RS::ARRAY_MAX]; }; @@ -92,7 +92,7 @@ struct Mesh { float edge_length = 0.0; uint32_t index_count = 0; uint32_t index_buffer_size = 0; - GLuint index_buffer; + GLuint index_buffer = 0; }; LOD *lods = nullptr; @@ -175,7 +175,7 @@ struct MultiMesh { bool *data_cache_dirty_regions = nullptr; uint32_t data_cache_used_dirty_regions = 0; - GLuint buffer; + GLuint buffer = 0; bool dirty = false; MultiMesh *dirty_list = nullptr; @@ -362,7 +362,7 @@ public: _FORCE_INLINE_ GLenum mesh_surface_get_index_type(void *p_surface) const { Mesh::Surface *s = reinterpret_cast(p_surface); - return s->vertex_count <= 65536 ? GL_UNSIGNED_SHORT : GL_UNSIGNED_INT; + return (s->vertex_count <= 65536 && s->vertex_count > 0) ? GL_UNSIGNED_SHORT : GL_UNSIGNED_INT; } // Use this to cache Vertex Array Objects so they are only generated once -- cgit v1.2.3