void
fge_mesh_draw(struct fge_mesh mesh)
{
int i;
glBegin(GL_TRIANGLES);
for (i = 0; (unsigned)i < mesh.count_faces; i++ ){
glNormal3fv((float*)&mesh.vertices[mesh.faces[i].index[0]].n);
glMultiTexCoord3fv(GL_TEXTURE1_ARB, (float*)&mesh.vertices[mesh.faces[i].index[0]].t);
glMultiTexCoord3fv(GL_TEXTURE2_ARB, (float*)&mesh.vertices[mesh.faces[i].index[0]].b);
glMultiTexCoord2fv(GL_TEXTURE0_ARB, (float*)&mesh.vertices[mesh.faces[i].index[0]].tex);
glVertex3fv((float*)&mesh.vertices[mesh.faces[i].index[0]].pos);
glNormal3fv((float*)&mesh.vertices[mesh.faces[i].index[1]].n);
glMultiTexCoord3fv(GL_TEXTURE1_ARB, (float*)&mesh.vertices[mesh.faces[i].index[1]].t);
glMultiTexCoord3fv(GL_TEXTURE2_ARB, (float*)&mesh.vertices[mesh.faces[i].index[1]].b);
glMultiTexCoord2fv(GL_TEXTURE0_ARB, (float*)&mesh.vertices[mesh.faces[i].index[1]].tex);
glVertex3fv((float*)&mesh.vertices[mesh.faces[i].index[1]].pos);
glNormal3fv((float*)&mesh.vertices[mesh.faces[i].index[2]].n);
glMultiTexCoord3fv(GL_TEXTURE1_ARB, (float*)&mesh.vertices[mesh.faces[i].index[2]].t);
glMultiTexCoord3fv(GL_TEXTURE2_ARB, (float*)&mesh.vertices[mesh.faces[i].index[2]].b);
glMultiTexCoord2fv(GL_TEXTURE0_ARB, (float*)&mesh.vertices[mesh.faces[i].index[2]].tex);
glVertex3fv((float*)&mesh.vertices[mesh.faces[i].index[2]].pos);
}
glEnd();
}
void drawWithMultiTexture(GLuint texName1, GLuint texName2, float translate[2]) {
// Initilize 2 textures for light mapping
glEnable(GL_COLOR_MATERIAL);
glColor3f(1.0,1.0,1.0);
glActiveTexture(GL_TEXTURE0);
glEnable(GL_TEXTURE_2D);
glBindTexture(GL_TEXTURE_2D, texName1);
glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
glActiveTexture(GL_TEXTURE1);
glEnable(GL_TEXTURE_2D);
glBindTexture(GL_TEXTURE_2D, texName2);
glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
glMatrixMode(GL_TEXTURE);
glPushMatrix();
glLoadIdentity();
glTranslatef(translate[1], translate[0], 0.0);
glMatrixMode(GL_MODELVIEW);
glBegin(GL_QUADS);
glNormal3fv(this->n);
glMultiTexCoord2fv(GL_TEXTURE0, t1);
glMultiTexCoord2f(GL_TEXTURE1, 0, 0);
glVertex3fv(this->v1);
glNormal3fv(this->n);
glMultiTexCoord2fv(GL_TEXTURE0, t2);
glMultiTexCoord2f(GL_TEXTURE1, 0, 1);
glVertex3fv(this->v2);
glNormal3fv(this->n);
glMultiTexCoord2fv(GL_TEXTURE0, t3);
glMultiTexCoord2f(GL_TEXTURE1, 1, 1);
glVertex3fv(this->v3);
glNormal3fv(this->n);
glMultiTexCoord2fv(GL_TEXTURE0, t4);
glMultiTexCoord2f(GL_TEXTURE1, 1, 0);
glVertex3fv(this->v4);
glEnd();
glFlush();
//glDisable(GL_TEXTURE_2D);
glActiveTexture(GL_TEXTURE0);
glDisable(GL_TEXTURE_2D);
glActiveTexture(GL_TEXTURE1);
glDisable(GL_TEXTURE_2D);
glMatrixMode(GL_TEXTURE);
glPopMatrix();
glMatrixMode(GL_MODELVIEW);
//glEnable(GL_COLOR_MATERIAL);
}
void glArrayElement(GLint i) {
if (i < 0) {
ERROR(GL_INVALID_VALUE);
}
GLfloat *v;
pointer_state_t *p;
p = &state.pointers.color;
if (state.enable.color_array && p->pointer) {
v = gl_pointer_index(p, i);
GLuint scale = gl_max_value(p->type);
// color[3] defaults to 1.0f
if (p->size < 4)
v[3] = 1.0f;
// scale color coordinates to a 0 - 1.0 range
for (int i = 0; i < p->size; i++) {
v[i] /= scale;
}
glColor4fv(v);
}
p = &state.pointers.normal;
if (state.enable.normal_array && p->pointer) {
v = gl_pointer_index(p, i);
glNormal3fv(v);
}
for (int i = 0; i < MAX_TEX; i++) {
p = &state.pointers.tex_coord[i];
if (state.enable.tex_coord_array[i] && p->pointer) {
v = gl_pointer_index(p, i);
glMultiTexCoord2fv(GL_TEXTURE0 + i, v);
}
}
p = &state.pointers.vertex;
if (state.enable.vertex_array && p->pointer) {
v = gl_pointer_index(p, i);
if (p->size == 4) {
glVertex4fv(v);
} else {
glVertex3fv(v);
}
}
}
void
Butterfly::draw()
{
// the position of the butterfly
// used by the shader
glUniform3fARB(glGetUniformLocationARB(shader->getPid(), "worldpos"), pos[0], pos[1], pos[2]);
glDepthMask(GL_TRUE);
glEnable(GL_DEPTH_TEST);
// local frame
float rot[16] =
{
binormal[0], binormal[1], binormal[2], 0,
dir[0], dir[1], dir[2], 0,
normal[0], normal[1], normal[2], 0,
pos[0], pos[1], pos[2], 1
};
glPushMatrix();
glMultMatrixf(rot);
// fprintf(stdout, "%f, %f, %f\n", pos[0], pos[1], pos[2]);
for(int j=0; j<NUM_OBJS; j++)
{
glPushMatrix();
float tmp = fabs(wing_cnt)-wing_angle;
if(j<(NUM_OBJS>>1)) glRotatef(tmp, 0, 1, 0);
else glRotatef(-tmp, 0, 1, 0);
glScalef(size, size, size);
// thickness/bump mapping texture
glActiveTexture(GL_TEXTURE0);
tex[(j*2)%NUM_TEXTURES].bind();
// backface texture
glActiveTexture(GL_TEXTURE1);
tex[(j*2+1)%NUM_TEXTURES].bind();
// if(j%2==0)
// {
// glEnable (GL_POLYGON_OFFSET_FILL);
// glPolygonOffset (1., 1.);
// }
glBegin(GL_TRIANGLES);
for(int i=0; i<geom[j].numFacets*3; i++)
{
glNormal3fv(geom[j].normals[geom[j].normalIdx[i]]);
glMultiTexCoord2fv(GL_TEXTURE0, geom[j].texcoords[geom[j].texcoordIdx[i]]);
glVertex3fv(geom[j].verts[geom[j].vertIdx[i]]);
}
glEnd();
// if(j%2==0) glDisable (GL_POLYGON_OFFSET_FILL);
glActiveTexture(GL_TEXTURE0);
tex[(j*2)%NUM_TEXTURES].unbind();
glActiveTexture(GL_TEXTURE1);
tex[(j*2+1)%NUM_TEXTURES].unbind();
glPopMatrix();
}
void draw_stuff(){
int i;
struct point front[4] = {
{0.0,0.0,1.0},{0.0,1.0,1.0},{1.0,1.0,1.0},{1.0,0.0,1.0}
};
struct point back[4] = {
{1.0,0.0,0.0},{1.0,1.0,0.0},{0.0,1.0,0.0},{0.0,0.0,0.0}
};
struct point left[4] = {
{0.0,0.0,0.0},{0.0,1.0,0.0},{0.0,1.0,1.0},{0.0,0.0,1.0}
};
struct point right[4] = {
{1.0,0.0,1.0},{1.0,1.0,1.0},{1.0,1.0,0.0},{1.0,0.0,0.0}
};
struct point top[4] = {
{0.0,1.0,1.0},{0.0,1.0,0.0},{1.0,1.0,0.0},{1.0,1.0,1.0}
};
struct point bottom[4] = {
{0.0,0.0,0.0},{0.0,0.0,1.0},{1.0,0.0,1.0},{1.0,0.0,0.0}
};
glClearColor(0.35,0.35,0.35,0.0);
float t = 1.0;
float mytexcoords[4][2] = {{0.0,t},{t,t},{t,0.0},{0.0,0.0}};
struct texture_control *tcp;
glEnable(GL_DEPTH_TEST);
glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
glShadeModel(GL_SMOOTH);
glColor3f(1.0,1.0,0.0);
glBegin(GL_QUADS);
glNormal3f(0.0,0.0,1.0);
for(i=0;i<4;i++) {
tcp = tc;
while(tcp->name){
glMultiTexCoord2fv(tcp->texunit,mytexcoords[i]);
tcp++;
}
glVertex3f(front[i].x,front[i].y,front[i].z);
}
glEnd();
tcp = tc;
while(tcp->name){
glActiveTexture(tcp->texunit);
glDisable(GL_TEXTURE_2D);
tcp++;
}
glBegin(GL_QUADS);
glNormal3f(0.0,0.0,-1.0);
for(i=0;i<4;i++) glVertex3f(back[i].x,back[i].y,back[i].z);
glNormal3f(-1.0,0.0,0.0);
for(i=0;i<4;i++) glVertex3f(left[i].x,left[i].y,left[i].z);
glNormal3f(1.0,0.0,0.0);
for(i=0;i<4;i++) glVertex3f(right[i].x,right[i].y,right[i].z);
glNormal3f(0.0,1.0,0.0);
for(i=0;i<4;i++) glVertex3f(top[i].x,top[i].y,top[i].z);
glNormal3f(0.0,-1.0,0.0);
for(i=0;i<4;i++) glVertex3f(bottom[i].x,bottom[i].y,bottom[i].z);
glEnd();
//glPopMatrix();
glFlush();
//glutSwapBuffers();
//glutPostRedisplay();
}
static void pie_Draw3DShape2(iIMDShape *shape, int frame, PIELIGHT colour, PIELIGHT teamcolour, int pieFlag, int pieFlagData)
{
iIMDPoly *pPolys;
bool light = true;
bool shaders = pie_GetShaderUsage();
pie_SetAlphaTest((pieFlag & pie_PREMULTIPLIED) == 0);
/* Set fog status */
if (!(pieFlag & pie_FORCE_FOG) &&
(pieFlag & pie_ADDITIVE || pieFlag & pie_TRANSLUCENT || pieFlag & pie_BUTTON || pieFlag & pie_PREMULTIPLIED))
{
pie_SetFogStatus(false);
}
else
{
pie_SetFogStatus(true);
}
/* Set tranlucency */
if (pieFlag & pie_ADDITIVE)
{
pie_SetRendMode(REND_ADDITIVE);
colour.byte.a = (UBYTE)pieFlagData;
light = false;
}
else if (pieFlag & pie_TRANSLUCENT)
{
pie_SetRendMode(REND_ALPHA);
colour.byte.a = (UBYTE)pieFlagData;
light = false;
}
else if (pieFlag & pie_PREMULTIPLIED)
{
pie_SetRendMode(REND_PREMULTIPLIED);
light = false;
}
else
{
if (pieFlag & pie_BUTTON)
{
pie_SetDepthBufferStatus(DEPTH_CMP_LEQ_WRT_ON);
light = false;
if (shaders)
{
pie_ActivateShader(SHADER_BUTTON, shape, teamcolour, colour);
}
else
{
pie_ActivateFallback(SHADER_BUTTON, shape, teamcolour, colour);
}
}
pie_SetRendMode(REND_OPAQUE);
}
if (pieFlag & pie_ECM)
{
pie_SetRendMode(REND_ALPHA);
light = true;
pie_SetShaderEcmEffect(true);
}
if (light)
{
glMaterialfv(GL_FRONT, GL_AMBIENT, shape->material[LIGHT_AMBIENT]);
glMaterialfv(GL_FRONT, GL_DIFFUSE, shape->material[LIGHT_DIFFUSE]);
glMaterialfv(GL_FRONT, GL_SPECULAR, shape->material[LIGHT_SPECULAR]);
glMaterialf(GL_FRONT, GL_SHININESS, shape->shininess);
glMaterialfv(GL_FRONT, GL_EMISSION, shape->material[LIGHT_EMISSIVE]);
if (shaders)
{
pie_ActivateShader(SHADER_COMPONENT, shape, teamcolour, colour);
}
else
{
pie_ActivateFallback(SHADER_COMPONENT, shape, teamcolour, colour);
}
}
if (pieFlag & pie_HEIGHT_SCALED) // construct
{
glScalef(1.0f, (float)pieFlagData / (float)pie_RAISE_SCALE, 1.0f);
}
if (pieFlag & pie_RAISE) // collapse
{
glTranslatef(1.0f, (-shape->max.y * (pie_RAISE_SCALE - pieFlagData)) * (1.0f / pie_RAISE_SCALE), 1.0f);
}
glColor4ubv(colour.vector); // Only need to set once for entire model
pie_SetTexturePage(shape->texpage);
frame %= MAX(1, shape->numFrames);
glBegin(GL_TRIANGLES);
for (pPolys = shape->polys; pPolys < shape->polys + shape->npolys; pPolys++)
{
Vector3f vertexCoords[3];
unsigned int n, frameidx = frame;
int *index;
if (!(pPolys->flags & iV_IMD_TEXANIM))
{
frameidx = 0;
}
for (n = 0, index = pPolys->pindex;
n < pPolys->npnts;
n++, index++)
{
vertexCoords[n].x = shape->points[*index].x;
vertexCoords[n].y = shape->points[*index].y;
vertexCoords[n].z = shape->points[*index].z;
}
polyCount++;
glNormal3fv((GLfloat*)&pPolys->normal);
for (n = 0; n < pPolys->npnts; n++)
{
GLfloat* texCoord = (GLfloat*)&pPolys->texCoord[frameidx * pPolys->npnts + n];
glTexCoord2fv(texCoord);
if (!shaders)
{
glMultiTexCoord2fv(GL_TEXTURE1, texCoord);
}
glVertex3fv((GLfloat*)&vertexCoords[n]);
}
}
glEnd();
if (light || (pieFlag & pie_BUTTON))
{
if (shaders)
{
pie_DeactivateShader();
}
else
{
pie_DeactivateFallback();
}
}
pie_SetShaderEcmEffect(false);
if (pieFlag & pie_BUTTON)
{
pie_SetDepthBufferStatus(DEPTH_CMP_ALWAYS_WRT_ON);
}
}
static void pie_Draw3DShape2(iIMDShape *shape, int frame, PIELIGHT colour, PIELIGHT teamcolour, WZ_DECL_UNUSED PIELIGHT specular, int pieFlag, int pieFlagData)
{
iIMDPoly *pPolys;
bool light = lighting;
pie_SetAlphaTest(true);
/* Set fog status */
if (!(pieFlag & pie_FORCE_FOG) &&
(pieFlag & pie_ADDITIVE || pieFlag & pie_TRANSLUCENT || pieFlag & pie_BUTTON))
{
pie_SetFogStatus(false);
}
else
{
pie_SetFogStatus(true);
}
/* Set tranlucency */
if (pieFlag & pie_ADDITIVE)
{
pie_SetRendMode(REND_ADDITIVE);
colour.byte.a = (UBYTE)pieFlagData;
light = false;
}
else if (pieFlag & pie_TRANSLUCENT)
{
pie_SetRendMode(REND_ALPHA);
colour.byte.a = (UBYTE)pieFlagData;
light = false;
}
else
{
if (pieFlag & pie_BUTTON)
{
pie_SetDepthBufferStatus(DEPTH_CMP_LEQ_WRT_ON);
}
pie_SetRendMode(REND_OPAQUE);
}
if (light)
{
const float ambient[4] = { 1.0f, 1.0f, 1.0f, 1.0f };
const float diffuse[4] = { 1.0f, 1.0f, 1.0f, 1.0f };
const float specular[4] = { 1.0f, 1.0f, 1.0f, 1.0f };
const float shininess = 10;
glEnable(GL_LIGHTING);
glEnable(GL_NORMALIZE);
glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT, ambient);
glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, diffuse);
glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, specular);
glMaterialf(GL_FRONT_AND_BACK, GL_SHININESS, shininess);
}
if (pieFlag & pie_HEIGHT_SCALED) // construct
{
glScalef(1.0f, (float)pieFlagData / (float)pie_RAISE_SCALE, 1.0f);
}
if (pieFlag & pie_RAISE) // collapse
{
glTranslatef(1.0f, (-shape->max.y * (pie_RAISE_SCALE - pieFlagData)) / pie_RAISE_SCALE, 1.0f);
}
glColor4ubv(colour.vector); // Only need to set once for entire model
pie_SetTexturePage(shape->texpage);
// Activate TCMask if needed
if (shape->flags & iV_IMD_TCMASK && rendStates.rendMode == REND_OPAQUE)
{
#ifdef _DEBUG
glErrors();
#endif
if (pie_GetShadersStatus())
{
pie_ActivateShader_TCMask(teamcolour, shape->tcmaskpage);
}
else
{
//Set the environment colour with tcmask
GLfloat tc_env_colour[4];
pal_PIELIGHTtoRGBA4f(&tc_env_colour[0], teamcolour);
// TU0
glActiveTexture(GL_TEXTURE0);
glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE);
glTexEnvfv(GL_TEXTURE_ENV, GL_TEXTURE_ENV_COLOR, tc_env_colour);
// TU0 RGB
glTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_RGB, GL_ADD_SIGNED);
glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_RGB, GL_TEXTURE);
glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_RGB, GL_SRC_COLOR);
glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE1_RGB, GL_CONSTANT);
glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND1_RGB, GL_SRC_COLOR);
// TU0 Alpha
glTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_ALPHA, GL_REPLACE);
glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_ALPHA, GL_TEXTURE);
glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_ALPHA, GL_SRC_ALPHA);
// TU1
glActiveTexture(GL_TEXTURE1);
glEnable(GL_TEXTURE_2D);
glBindTexture(GL_TEXTURE_2D, _TEX_PAGE[shape->tcmaskpage].id);
glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE);
// TU1 RGB
glTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_RGB, GL_INTERPOLATE);
glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_RGB, GL_PREVIOUS);
glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_RGB, GL_SRC_COLOR);
glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE1_RGB, GL_TEXTURE0);
glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND1_RGB, GL_SRC_COLOR);
glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE2_RGB, GL_TEXTURE);
glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND2_RGB, GL_SRC_ALPHA);
// TU1 Alpha
glTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_ALPHA, GL_REPLACE);
glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_ALPHA, GL_PREVIOUS);
glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_ALPHA, GL_SRC_ALPHA);
// This is why we are doing in opaque mode.
glEnable(GL_BLEND);
glBlendFunc(GL_CONSTANT_COLOR, GL_ZERO);
glBlendColor(colour.byte.r / 255.0, colour.byte.g / 255.0,
colour.byte.b / 255.0, colour.byte.a / 255.0);
}
#ifdef _DEBUG
glErrors();
#endif
}
for (pPolys = shape->polys; pPolys < shape->polys + shape->npolys; pPolys++)
{
Vector2f texCoords[pie_MAX_VERTICES_PER_POLYGON];
Vector3f vertexCoords[pie_MAX_VERTICES_PER_POLYGON];
unsigned int n;
VERTEXID *index;
for (n = 0, index = pPolys->pindex;
n < pPolys->npnts;
n++, index++)
{
vertexCoords[n].x = shape->points[*index].x;
vertexCoords[n].y = shape->points[*index].y;
vertexCoords[n].z = shape->points[*index].z;
texCoords[n].x = pPolys->texCoord[n].x;
texCoords[n].y = pPolys->texCoord[n].y;
}
polyCount++;
// Run TextureAnimation (exluding the new teamcoloured models)
if (frame && pPolys->flags & iV_IMD_TEXANIM && !(shape->flags & iV_IMD_TCMASK))
{
frame %= shape->numFrames;
if (frame > 0)
{
const int framesPerLine = OLD_TEXTURE_SIZE_FIX / (pPolys->texAnim.x * OLD_TEXTURE_SIZE_FIX);
const int uFrame = (frame % framesPerLine) * (pPolys->texAnim.x * OLD_TEXTURE_SIZE_FIX);
const int vFrame = (frame / framesPerLine) * (pPolys->texAnim.y * OLD_TEXTURE_SIZE_FIX);
for (n = 0; n < pPolys->npnts; n++)
{
texCoords[n].x += uFrame / OLD_TEXTURE_SIZE_FIX;
texCoords[n].y += vFrame / OLD_TEXTURE_SIZE_FIX;
}
}
}
glBegin(GL_TRIANGLE_FAN);
if (light)
{
glNormal3fv((GLfloat*)&pPolys->normal);
}
for (n = 0; n < pPolys->npnts; n++)
{
glTexCoord2fv((GLfloat*)&texCoords[n]);
if (shape->flags & iV_IMD_TCMASK && rendStates.rendMode == REND_OPAQUE &&
!pie_GetShadersStatus())
{
glMultiTexCoord2fv(GL_TEXTURE1, (GLfloat*)&texCoords[n]);
}
glVertex3fv((GLfloat*)&vertexCoords[n]);
}
glEnd();
}
// Deactivate TCMask if it was previously enabled
if (shape->flags & iV_IMD_TCMASK && rendStates.rendMode == REND_OPAQUE)
{
if (pie_GetShadersStatus())
{
pie_DeactivateShader();
}
else
{
glDisable(GL_BLEND);
glActiveTexture(GL_TEXTURE1);
glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
glDisable(GL_TEXTURE_2D);
glActiveTexture(GL_TEXTURE0);
glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
}
}
if (pieFlag & pie_BUTTON)
{
pie_SetDepthBufferStatus(DEPTH_CMP_ALWAYS_WRT_ON);
}
if (light)
{
glDisable(GL_LIGHTING);
glDisable(GL_NORMALIZE);
}
}
JNIEXPORT void JNICALL Java_org_lwjgl_opengl_GL13_nglMultiTexCoord2fv(JNIEnv *__env, jclass clazz, jint texture, jlong vAddress, jlong __functionAddress) {
const GLfloat *v = (const GLfloat *)(intptr_t)vAddress;
glMultiTexCoord2fvPROC glMultiTexCoord2fv = (glMultiTexCoord2fvPROC)(intptr_t)__functionAddress;
UNUSED_PARAMS(__env, clazz)
glMultiTexCoord2fv(texture, v);
}
void setTexture(int i) {
switch (globalscene->mList[i].texWay)
{
case 0:
/* 画出物体 */
obj_display(globalscene->mList[i].obejct);
break;
case 1:
// 必须要开启alpha test 把透明的地方挖空！
glEnable(GL_ALPHA_TEST);
glAlphaFunc(GL_GREATER, 0.5f);
glEnable(GL_TEXTURE_2D);
glBindTexture(GL_TEXTURE_2D, globalscene->mList[i].texObject1);
//glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE);
glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
/* 画出物体 */
obj_display(globalscene->mList[i].obejct);
/* 关闭贴图 */
glDisable(GL_TEXTURE_2D);
glDisable(GL_ALPHA_TEST);
glBindTexture(GL_TEXTURE_2D, 0);
break;
case 2:
//bind texture 0
glActiveTexture(GL_TEXTURE0);
glEnable(GL_TEXTURE_2D);
glBindTexture(GL_TEXTURE_2D, globalscene->mList[i].texObject1);
glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE);
glTexEnvf(GL_TEXTURE_ENV, GL_COMBINE_RGB, GL_MODULATE);
//bind texture 1
glActiveTexture(GL_TEXTURE1);
glEnable(GL_TEXTURE_2D);
glBindTexture(GL_TEXTURE_2D, globalscene->mList[i].texObject2);
glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE);
glTexEnvf(GL_TEXTURE_ENV, GL_COMBINE_RGB, GL_MODULATE);
/* 画出物体 */
// 两幅贴图的物体，贴图方式有所不同，需要另外完成，画图功能，不能直接调用 obj_display()
{
int lastMaterial = -1;
for(size_t k=0;k < globalscene->mList[i].obejct->fTotal;++k)
{
// set material property if this face used different material
if(lastMaterial !=globalscene->mList[i].obejct->faceList[k].m)
{
lastMaterial = (int)globalscene->mList[i].obejct->faceList[k].m;
glMaterialfv(GL_FRONT, GL_AMBIENT , globalscene->mList[i].obejct->mList[lastMaterial].Ka);
glMaterialfv(GL_FRONT, GL_DIFFUSE , globalscene->mList[i].obejct->mList[lastMaterial].Kd);
glMaterialfv(GL_FRONT, GL_SPECULAR , globalscene->mList[i].obejct->mList[lastMaterial].Ks);
glMaterialfv(GL_FRONT, GL_SHININESS, &globalscene->mList[i].obejct->mList[lastMaterial].Ns);
//you can obtain the texture name by object->mList[lastMaterial].map_Kd
//load them once in the main function before mainloop
//bind them in display function here
}
glBegin(GL_TRIANGLES);
for (size_t j=0;j<3;++j)
{
//textex corrd.
glMultiTexCoord2fv(GL_TEXTURE0, globalscene->mList[i].obejct->tList[globalscene->mList[i].obejct->faceList[k][j].t].ptr);
glMultiTexCoord2fv(GL_TEXTURE1, globalscene->mList[i].obejct->tList[globalscene->mList[i].obejct->faceList[k][j].t].ptr);
glNormal3fv(globalscene->mList[i].obejct->nList[globalscene->mList[i].obejct->faceList[k][j].n].ptr);
glVertex3fv(globalscene->mList[i].obejct->vList[globalscene->mList[i].obejct->faceList[k][j].v].ptr);
}
glEnd();
}
}
//unbind texture 1
glActiveTexture(GL_TEXTURE1);
glDisable(GL_TEXTURE_2D);
glBindTexture(GL_TEXTURE_2D, 0);
//unbind texture 0
glActiveTexture(GL_TEXTURE0);
glDisable(GL_TEXTURE_2D);
glBindTexture(GL_TEXTURE_2D, 0);
break;
case 3:
//bind texture 0
glTexGeni(GL_S, GL_TEXTURE_GEN_MODE, GL_REFLECTION_MAP);
glTexGeni(GL_T, GL_TEXTURE_GEN_MODE, GL_REFLECTION_MAP);
glTexGeni(GL_R, GL_TEXTURE_GEN_MODE, GL_REFLECTION_MAP);
glEnable(GL_TEXTURE_GEN_S);
glEnable(GL_TEXTURE_GEN_T);
glEnable(GL_TEXTURE_GEN_R);
glEnable(GL_TEXTURE_CUBE_MAP);
glBindTexture(GL_TEXTURE_CUBE_MAP, globalscene->mList[i].texObject1);
glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
/* 画出物体 */
obj_display(globalscene->mList[i].obejct);
/* 关闭贴图 */
glDisable(GL_TEXTURE_GEN_S);
glDisable(GL_TEXTURE_GEN_T);
glDisable(GL_TEXTURE_GEN_R);
glDisable(GL_TEXTURE_CUBE_MAP);
glBindTexture(GL_TEXTURE_CUBE_MAP, 0);
break;
}
}
void obj_display() {
// 只有一个物体
mesh *object = globalscene->mList[0].obejct;
//bind texture 0
// glUnifor1i( 0) for colorTexture
glActiveTexture( GL_TEXTURE0 );
glBindTexture(GL_TEXTURE_2D, globalscene->mList[0].ambTextureId);
GLint location0 = glGetUniformLocation(MyShader, "colorTexture");
if(location0 == -1)
printf("Cant find texture name: colorTexture\n");
else
glUniform1i(location0, 0);
//bind texture 1
// glUnifor1i( 1) for diffuse Texture
glActiveTexture( GL_TEXTURE1 );
glBindTexture(GL_TEXTURE_2D, globalscene->mList[0].difTextureId);
GLint location1 = glGetUniformLocation(MyShader, "diffuseTex");
if(location1 == -1)
printf("Cant find texture name: diffuseTex\n");
else
glUniform1i(location1, 1);
//bind texture 2
// glUnifor1i( 2) for specular Texture
glActiveTexture( GL_TEXTURE2 );
glBindTexture(GL_TEXTURE_2D, globalscene->mList[0].spcTextureId);
GLint location2 = glGetUniformLocation(MyShader, "specularTex");
if(location2 == -1)
printf("Cant find texture name: specularTex\n");
else
glUniform1i(location2, 2);
// 确定顶点属性的 location，算完切向量后，再设置属性值
tangent_loc = glGetAttribLocation(MyShader, "tangent");
bitangent_loc = glGetAttribLocation(MyShader, "bitangent");
int lastMaterial = -1;
for(size_t i=0;i < object->fTotal;++i)
{
// set material property if this face used different material
if(lastMaterial != object->faceList[i].m)
{
lastMaterial = (int)object->faceList[i].m;
glMaterialfv(GL_FRONT, GL_AMBIENT , object->mList[lastMaterial].Ka);
glMaterialfv(GL_FRONT, GL_DIFFUSE , object->mList[lastMaterial].Kd);
glMaterialfv(GL_FRONT, GL_SPECULAR , object->mList[lastMaterial].Ks);
glMaterialfv(GL_FRONT, GL_SHININESS, &object->mList[lastMaterial].Ns);
//you can obtain the texture name by object->mList[lastMaterial].map_Kd
//load them once in the main function before mainloop
//bind them in display function here
}
// 取得三个顶点 p0 p1 p2 坐标
float *vertex0 = object->vList[object->faceList[i][0].v].ptr;
float *vertex1 = object->vList[object->faceList[i][1].v].ptr;
float *vertex2 = object->vList[object->faceList[i][2].v].ptr;
glm::vec3 p0(vertex0[0], vertex0[1], vertex0[2]);
glm::vec3 p1(vertex1[0], vertex1[1], vertex1[2]);
glm::vec3 p2(vertex2[0], vertex2[1], vertex2[2]);
// 取得贴图三点 对应贴图坐标
float *texture0 = object->tList[object->faceList[i][0].t].ptr;
float *texture1 = object->tList[object->faceList[i][1].t].ptr;
float *texture2 = object->tList[object->faceList[i][2].t].ptr;
glm::vec2 UV0(texture0[0], texture0[1]);
glm::vec2 UV1(texture1[0], texture1[1]);
glm::vec2 UV2(texture2[0], texture2[1]);
// 得到两边
glm::vec3 Edge1 = p1 - p0;
glm::vec3 Edge2 = p2 - p0;
glm::vec2 Edge1uv = UV1 - UV0;
glm::vec2 Edge2uv = UV2 - UV0;
// 计算切向量，副切向量
glm::vec3 tangent, bitangent;
float cp = Edge1uv.x * Edge2uv.y - Edge2uv.x * Edge1uv.y;
if(cp != 0.0f) {
float mul = 1.0f /cp;
tangent = (Edge1 * Edge2uv.y + Edge2 * -Edge1uv.y) * mul;
bitangent = (Edge1 * -Edge2uv.x + Edge2 * Edge1uv.x) * mul;
}
// specify the value of a generic vertex attribute 设置顶点属性
glVertexAttrib3f(tangent_loc, tangent.x, tangent.y, tangent.z);
glVertexAttrib3f(bitangent_loc, bitangent.x, bitangent.y, bitangent.z);
glBegin(GL_TRIANGLES);
for (size_t j=0;j<3;++j)
{
//textex corrd.
glMultiTexCoord2fv(GL_TEXTURE0, object->tList[object->faceList[i][j].t].ptr);
glMultiTexCoord2fv(GL_TEXTURE1, object->tList[object->faceList[i][j].t].ptr);
glMultiTexCoord2fv(GL_TEXTURE2, object->tList[object->faceList[i][j].t].ptr);
glNormal3fv(object->nList[object->faceList[i][j].n].ptr);
glVertex3fv(object->vList[object->faceList[i][j].v].ptr);
}
glEnd();
}
}