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https://github.com/aap/librw.git
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118 lines
2.5 KiB
C++
118 lines
2.5 KiB
C++
#include <cstdio>
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#include <cstdlib>
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#include <cstring>
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#include "../rwbase.h"
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#include "../rwerror.h"
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#include "../rwplg.h"
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#include "../rwpipeline.h"
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#include "../rwobjects.h"
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#include "../rwengine.h"
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#ifdef RW_OPENGL
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#include <GL/glew.h>
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#include "rwgl3.h"
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#include "rwgl3shader.h"
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#include "rwgl3impl.h"
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namespace rw {
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namespace gl3 {
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#define MAX_LIGHTS 8
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void
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setAttribPointers(AttribDesc *attribDescs, int32 numAttribs)
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{
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AttribDesc *a;
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for(a = attribDescs; a != &attribDescs[numAttribs]; a++){
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glEnableVertexAttribArray(a->index);
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glVertexAttribPointer(a->index, a->size, a->type, a->normalized,
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a->stride, (void*)(uint64)a->offset);
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}
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}
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void
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disableAttribPointers(AttribDesc *attribDescs, int32 numAttribs)
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{
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AttribDesc *a;
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for(a = attribDescs; a != &attribDescs[numAttribs]; a++)
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glDisableVertexAttribArray(a->index);
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}
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void
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lightingCB(void)
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{
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World *world;
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RGBAf ambLight = { 0.0, 0.0, 0.0, 1.0 };
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int n = 0;
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world = (World*)engine->currentWorld;
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// only unpositioned lights right now
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FORLIST(lnk, world->directionalLights){
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Light *l = Light::fromWorld(lnk);
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if(l->getType() == Light::DIRECTIONAL){
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if(n >= MAX_LIGHTS)
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continue;
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setLight(n++, l);
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}else if(l->getType() == Light::AMBIENT){
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ambLight.red += l->color.red;
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ambLight.green += l->color.green;
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ambLight.blue += l->color.blue;
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}
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}
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setNumLights(n);
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setAmbientLight(&ambLight);
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}
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#define U(s) currentShader->uniformLocations[findUniform(s)]
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void
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defaultRenderCB(Atomic *atomic, InstanceDataHeader *header)
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{
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Material *m;
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RGBAf col;
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GLfloat surfProps[4];
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int id;
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setWorldMatrix(atomic->getFrame()->getLTM());
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lightingCB();
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glBindBuffer(GL_ARRAY_BUFFER, header->vbo);
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glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, header->ibo);
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setAttribPointers(header->attribDesc, header->numAttribs);
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InstanceData *inst = header->inst;
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int32 n = header->numMeshes;
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simpleShader->use();
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while(n--){
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m = inst->material;
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convColor(&col, &m->color);
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glUniform4fv(U("u_matColor"), 1, (GLfloat*)&col);
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surfProps[0] = m->surfaceProps.ambient;
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surfProps[1] = m->surfaceProps.specular;
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surfProps[2] = m->surfaceProps.diffuse;
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surfProps[3] = 0.0f;
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glUniform4fv(U("u_surfaceProps"), 1, surfProps);
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setTexture(0, m->texture);
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rw::SetRenderState(VERTEXALPHA, inst->vertexAlpha || m->color.alpha != 0xFF);
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flushCache();
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glDrawElements(header->primType, inst->numIndex,
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GL_UNSIGNED_SHORT, (void*)(uintptr)inst->offset);
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inst++;
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}
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disableAttribPointers(header->attribDesc, header->numAttribs);
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}
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}
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}
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#endif
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