From 847962910f0bff071f3bf07c9abb87764fb6cac3 Mon Sep 17 00:00:00 2001 From: claude-bot Date: Mon, 13 Jul 2026 12:40:03 +0000 Subject: Import aap/librw @ master Snapshot for re3/reVC vendoring, per @lzcnt. Source: https://github.com/aap/librw (master). --- src/gl/gl3pipe.cpp | 333 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 333 insertions(+) create mode 100644 src/gl/gl3pipe.cpp (limited to 'src/gl/gl3pipe.cpp') diff --git a/src/gl/gl3pipe.cpp b/src/gl/gl3pipe.cpp new file mode 100644 index 0000000..4df0b7c --- /dev/null +++ b/src/gl/gl3pipe.cpp @@ -0,0 +1,333 @@ +#include +#include +#include +#include + +#include "../rwbase.h" +#include "../rwerror.h" +#include "../rwplg.h" +#include "../rwpipeline.h" +#include "../rwobjects.h" +#include "../rwengine.h" + +#include "rwgl3.h" +#include "rwgl3shader.h" + +namespace rw { +namespace gl3 { + +// TODO: make some of these things platform-independent + +#ifdef RW_OPENGL + +void +freeInstanceData(Geometry *geometry) +{ + if(geometry->instData == nil || + geometry->instData->platform != PLATFORM_GL3) + return; + InstanceDataHeader *header = (InstanceDataHeader*)geometry->instData; + geometry->instData = nil; + glDeleteBuffers(1, &header->ibo); + glDeleteBuffers(1, &header->vbo); +#ifdef RW_GL_USE_VAOS + glDeleteBuffers(1, &header->vao); +#endif + rwFree(header->indexBuffer); + rwFree(header->vertexBuffer); + rwFree(header->attribDesc); + rwFree(header->inst); + rwFree(header); +} + +void* +destroyNativeData(void *object, int32, int32) +{ + freeInstanceData((Geometry*)object); + return object; +} + +static InstanceDataHeader* +instanceMesh(rw::ObjPipeline *rwpipe, Geometry *geo) +{ + InstanceDataHeader *header = rwNewT(InstanceDataHeader, 1, MEMDUR_EVENT | ID_GEOMETRY); + MeshHeader *meshh = geo->meshHeader; + geo->instData = header; + header->platform = PLATFORM_GL3; + + header->serialNumber = meshh->serialNum; + header->numMeshes = meshh->numMeshes; + header->primType = meshh->flags == 1 ? GL_TRIANGLE_STRIP : GL_TRIANGLES; + header->totalNumVertex = geo->numVertices; + header->totalNumIndex = meshh->totalIndices; + header->inst = rwNewT(InstanceData, header->numMeshes, MEMDUR_EVENT | ID_GEOMETRY); + + header->indexBuffer = rwNewT(uint16, header->totalNumIndex, MEMDUR_EVENT | ID_GEOMETRY); + InstanceData *inst = header->inst; + Mesh *mesh = meshh->getMeshes(); + uint32 offset = 0; + for(uint32 i = 0; i < header->numMeshes; i++){ + findMinVertAndNumVertices(mesh->indices, mesh->numIndices, + &inst->minVert, &inst->numVertices); + assert(inst->minVert != 0xFFFFFFFF); + inst->numIndex = mesh->numIndices; + inst->material = mesh->material; + inst->vertexAlpha = 0; + inst->program = 0; + inst->offset = offset; + memcpy((uint8*)header->indexBuffer + inst->offset, + mesh->indices, inst->numIndex*2); + offset += inst->numIndex*2; + mesh++; + inst++; + } + + header->vertexBuffer = nil; + header->numAttribs = 0; + header->attribDesc = nil; + header->ibo = 0; + header->vbo = 0; + +#ifdef RW_GL_USE_VAOS + glGenVertexArrays(1, &header->vao); + glBindVertexArray(header->vao); +#endif + glGenBuffers(1, &header->ibo); + glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, header->ibo); + glBufferData(GL_ELEMENT_ARRAY_BUFFER, header->totalNumIndex*2, + header->indexBuffer, GL_STATIC_DRAW); + + return header; +} + +static void +instance(rw::ObjPipeline *rwpipe, Atomic *atomic) +{ + ObjPipeline *pipe = (ObjPipeline*)rwpipe; + Geometry *geo = atomic->geometry; + // don't try to (re)instance native data + if(geo->flags & Geometry::NATIVE) + return; + + InstanceDataHeader *header = (InstanceDataHeader*)geo->instData; + if(geo->instData){ + // Already have instanced data, so check if we have to reinstance + assert(header->platform == PLATFORM_GL3); + if(header->serialNumber != geo->meshHeader->serialNum){ + // Mesh changed, so reinstance everything + freeInstanceData(geo); + } + } + + // no instance or complete reinstance + if(geo->instData == nil){ + geo->instData = instanceMesh(rwpipe, geo); + pipe->instanceCB(geo, (InstanceDataHeader*)geo->instData, 0); + }else if(geo->lockedSinceInst) + pipe->instanceCB(geo, (InstanceDataHeader*)geo->instData, 1); + + geo->lockedSinceInst = 0; +} + +static void +uninstance(rw::ObjPipeline *rwpipe, Atomic *atomic) +{ + assert(0 && "can't uninstance"); +} + +static void +render(rw::ObjPipeline *rwpipe, Atomic *atomic) +{ + ObjPipeline *pipe = (ObjPipeline*)rwpipe; + Geometry *geo = atomic->geometry; + pipe->instance(atomic); + assert(geo->instData != nil); + assert(geo->instData->platform == PLATFORM_GL3); + if(pipe->renderCB) + pipe->renderCB(atomic, (InstanceDataHeader*)geo->instData); +} + +void +ObjPipeline::init(void) +{ + this->rw::ObjPipeline::init(PLATFORM_GL3); + this->impl.instance = gl3::instance; + this->impl.uninstance = gl3::uninstance; + this->impl.render = gl3::render; + this->instanceCB = nil; + this->uninstanceCB = nil; + this->renderCB = nil; +} + +ObjPipeline* +ObjPipeline::create(void) +{ + ObjPipeline *pipe = rwNewT(ObjPipeline, 1, MEMDUR_GLOBAL); + pipe->init(); + return pipe; +} + +void +defaultInstanceCB(Geometry *geo, InstanceDataHeader *header, bool32 reinstance) +{ + AttribDesc *attribs, *a; + + bool isPrelit = !!(geo->flags & Geometry::PRELIT); + bool hasNormals = !!(geo->flags & Geometry::NORMALS); + + if(!reinstance){ + AttribDesc tmpAttribs[12]; + uint32 stride; + + // + // Create attribute descriptions + // + a = tmpAttribs; + stride = 0; + + // Positions + a->index = ATTRIB_POS; + a->size = 3; + a->type = GL_FLOAT; + a->normalized = GL_FALSE; + a->offset = stride; + stride += 12; + a++; + + // Normals + // TODO: compress + if(hasNormals){ + a->index = ATTRIB_NORMAL; + a->size = 3; + a->type = GL_FLOAT; + a->normalized = GL_FALSE; + a->offset = stride; + stride += 12; + a++; + } + + // Prelighting + if(isPrelit){ + a->index = ATTRIB_COLOR; + a->size = 4; + a->type = GL_UNSIGNED_BYTE; + a->normalized = GL_TRUE; + a->offset = stride; + stride += 4; + a++; + } + + // Texture coordinates + for(int32 n = 0; n < geo->numTexCoordSets; n++){ + a->index = ATTRIB_TEXCOORDS0+n; + a->size = 2; + a->type = GL_FLOAT; + a->normalized = GL_FALSE; + a->offset = stride; + stride += 8; + a++; + } + + header->numAttribs = a - tmpAttribs; + for(a = tmpAttribs; a != &tmpAttribs[header->numAttribs]; a++) + a->stride = stride; + header->attribDesc = rwNewT(AttribDesc, header->numAttribs, MEMDUR_EVENT | ID_GEOMETRY); + memcpy(header->attribDesc, tmpAttribs, + header->numAttribs*sizeof(AttribDesc)); + + // + // Allocate vertex buffer + // + header->vertexBuffer = rwNewT(uint8, header->totalNumVertex*stride, MEMDUR_EVENT | ID_GEOMETRY); + assert(header->vbo == 0); + glGenBuffers(1, &header->vbo); + } + + attribs = header->attribDesc; + + // + // Fill vertex buffer + // + + uint8 *verts = header->vertexBuffer; + + // Positions + if(!reinstance || geo->lockedSinceInst&Geometry::LOCKVERTICES){ + for(a = attribs; a->index != ATTRIB_POS; a++) + ; + instV3d(VERT_FLOAT3, verts + a->offset, + geo->morphTargets[0].vertices, + header->totalNumVertex, a->stride); + } + + // Normals + if(hasNormals && (!reinstance || geo->lockedSinceInst&Geometry::LOCKNORMALS)){ + for(a = attribs; a->index != ATTRIB_NORMAL; a++) + ; + instV3d(VERT_FLOAT3, verts + a->offset, + geo->morphTargets[0].normals, + header->totalNumVertex, a->stride); + } + + // Prelighting + if(isPrelit && (!reinstance || geo->lockedSinceInst&Geometry::LOCKPRELIGHT)){ + for(a = attribs; a->index != ATTRIB_COLOR; a++) + ; + int n = header->numMeshes; + InstanceData *inst = header->inst; + while(n--){ + assert(inst->minVert != 0xFFFFFFFF); + inst->vertexAlpha = instColor(VERT_RGBA, + verts + a->offset + a->stride*inst->minVert, + geo->colors + inst->minVert, + inst->numVertices, a->stride); + inst++; + } + } + + // Texture coordinates + for(int32 n = 0; n < geo->numTexCoordSets; n++){ + if(!reinstance || geo->lockedSinceInst&(Geometry::LOCKTEXCOORDS<index != ATTRIB_TEXCOORDS0+n; a++) + ; + instTexCoords(VERT_FLOAT2, verts + a->offset, + geo->texCoords[n], + header->totalNumVertex, a->stride); + } + } + +#ifdef RW_GL_USE_VAOS + glBindVertexArray(header->vao); + glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, header->ibo); +#endif + glBindBuffer(GL_ARRAY_BUFFER, header->vbo); + glBufferData(GL_ARRAY_BUFFER, header->totalNumVertex*attribs[0].stride, + header->vertexBuffer, GL_STATIC_DRAW); +#ifdef RW_GL_USE_VAOS + setAttribPointers(header->attribDesc, header->numAttribs); + glBindVertexArray(0); +#endif +} + +void +defaultUninstanceCB(Geometry *geo, InstanceDataHeader *header) +{ + assert(0 && "can't uninstance"); +} + +ObjPipeline* +makeDefaultPipeline(void) +{ + ObjPipeline *pipe = ObjPipeline::create(); + pipe->instanceCB = defaultInstanceCB; + pipe->uninstanceCB = defaultUninstanceCB; + pipe->renderCB = defaultRenderCB; + return pipe; +} + +#else +void *destroyNativeData(void *object, int32, int32) { return object; } +#endif + +} +} -- cgit v1.2.3