EliasFleckenstein03
/
shadowclad
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Some debug stuff to figure out normals and switch to flat shading

master
outfrost 2020-06-04 03:54:41 +02:00
parent 3509d29964
commit e2579374e9
1 changed files with 31 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

34
src/engine/render.c
View File

@ -6,7 +6,8 @@
#include "geometry.h"
#include "performance.h"
#define RENDER_DEBUG_ 0
#define SCENE_DEBUG_ 0
#define RENDER_DEBUG_ 1
float viewportAspectRatio = 1.0f;
const Scene* cameraAnchor;
@ -37,6 +38,8 @@ void initRender() {
glLightf(GL_LIGHT0, GL_CONSTANT_ATTENUATION, 1.0f);
glLightf(GL_LIGHT0, GL_LINEAR_ATTENUATION, 0.05f);
glLightf(GL_LIGHT0, GL_QUADRATIC_ATTENUATION, 0.005f);
glShadeModel(GL_FLAT);
}
void renderFrame() {
@ -68,9 +71,9 @@ static void renderScene(const Scene* scene, const Transform baseTransform) {
glLoadTransposeMatrixf((const GLfloat*) &transform);
glDisable(GL_LIGHTING);
#if RENDER_DEBUG_
#if SCENE_DEBUG_
drawAxes();
#endif // RENDER_DEBUG_
#endif // SCENE_DEBUG_
glEnable(GL_LIGHTING);
if (scene->solid) {
@ -127,6 +130,12 @@ static void drawAxes() {
glEnd();
}
#if RENDER_DEBUG_
static GLfloat ab(GLfloat a) {
return a < 0 ? -a : a;
}
#endif // RENDER_DEBUG_
static void drawSolid(const Solid* solid) {
if (solid == NULL) {
return;
@ -145,6 +154,25 @@ static void drawSolid(const Solid* solid) {
for (size_t faceIndex = 0; faceIndex < mesh.numFaces; ++faceIndex) {
const Face face = mesh.faces[faceIndex];
#if RENDER_DEBUG_
if (hasNormals) {
glDisable(GL_LIGHTING);
glDisable(GL_TEXTURE_2D);
glBegin(GL_LINES);
for (size_t i = 0; i < face.numIndices; ++i) {
size_t vertIndex = face.indices[i];
Vector3D vertex = mesh.vertices[vertIndex];
Vector3D normal = mesh.normals[vertIndex];
glColor3f(ab(normal.x), ab(normal.y), ab(normal.z));
glVertex3f(vertex.x, vertex.y, vertex.z);
glVertex3f(vertex.x + normal.x, vertex.y + normal.y, vertex.z + normal.z);
}
glEnd();
glEnable(GL_TEXTURE_2D);
glEnable(GL_LIGHTING);
}
#endif // RENDER_DEBUG_
GLenum faceMode;
switch (face.numIndices) {
case 1: faceMode = GL_POINTS; break;