static void materialx(GLenum face, GLenum pname, GLfixed param, ogles_context_t* c)
{
if (ggl_unlikely(face != GL_FRONT_AND_BACK)) {
ogles_error(c, GL_INVALID_ENUM);
return;
}
if (ggl_unlikely(pname != GL_SHININESS)) {
ogles_error(c, GL_INVALID_ENUM);
return;
}
c->lighting.front.shininess = param;
invalidate_lighting(c);
}
static void lightModelx(GLenum pname, GLfixed param, ogles_context_t* c)
{
if (ggl_unlikely(pname != GL_LIGHT_MODEL_TWO_SIDE)) {
ogles_error(c, GL_INVALID_ENUM);
return;
}
c->lighting.lightModel.twoSide = param ? GL_TRUE : GL_FALSE;
invalidate_lighting(c);
}
static void lightx(GLenum i, GLenum pname, GLfixed param, ogles_context_t* c)
{
if (ggl_unlikely(uint32_t(i-GL_LIGHT0) >= OGLES_MAX_LIGHTS)) {
ogles_error(c, GL_INVALID_ENUM);
return;
}
light_t& light = c->lighting.lights[i-GL_LIGHT0];
const GLfixed kDegToRad = GLfixed((M_PI * gglIntToFixed(1)) / 180.0f);
switch (pname) {
case GL_SPOT_EXPONENT:
if (GGLfixed(param) >= gglIntToFixed(128)) {
ogles_error(c, GL_INVALID_VALUE);
return;
}
light.spotExp = param;
break;
case GL_SPOT_CUTOFF:
if (param!=gglIntToFixed(180) && GGLfixed(param)>=gglIntToFixed(90)) {
ogles_error(c, GL_INVALID_VALUE);
return;
}
light.spotCutoff = param;
light.spotCutoffCosine =
gglFloatToFixed(cosinef((M_PI/(180.0f*65536.0f))*param));
break;
case GL_CONSTANT_ATTENUATION:
if (param < 0) {
ogles_error(c, GL_INVALID_VALUE);
return;
}
light.attenuation[0] = param;
break;
case GL_LINEAR_ATTENUATION:
if (param < 0) {
ogles_error(c, GL_INVALID_VALUE);
return;
}
light.attenuation[1] = param;
break;
case GL_QUADRATIC_ATTENUATION:
if (param < 0) {
ogles_error(c, GL_INVALID_VALUE);
return;
}
light.attenuation[2] = param;
break;
default:
ogles_error(c, GL_INVALID_ENUM);
return;
}
invalidate_lighting(c);
}
static void lightxv(GLenum i, GLenum pname, const GLfixed *params, ogles_context_t* c)
{
if (ggl_unlikely(uint32_t(i-GL_LIGHT0) >= OGLES_MAX_LIGHTS)) {
ogles_error(c, GL_INVALID_ENUM);
return;
}
GLfixed* what;
light_t& light = c->lighting.lights[i-GL_LIGHT0];
switch (pname) {
case GL_AMBIENT:
what = light.ambient.v;
break;
case GL_DIFFUSE:
what = light.diffuse.v;
break;
case GL_SPECULAR:
what = light.specular.v;
break;
case GL_POSITION: {
ogles_validate_transform(c, transform_state_t::MODELVIEW);
transform_t& mv = c->transforms.modelview.transform;
memcpy(light.position.v, params, sizeof(light.position.v));
mv.point4(&mv, &light.position, &light.position);
invalidate_lighting(c);
return;
}
case GL_SPOT_DIRECTION: {
ogles_validate_transform(c, transform_state_t::MVUI);
transform_t& mvui = c->transforms.mvui;
mvui.point3(&mvui, &light.spotDir, (vec4_t*)params);
vnorm3(light.normalizedSpotDir.v, light.spotDir.v);
invalidate_lighting(c);
return;
}
default:
lightx(i, pname, params[0], c);
return;
}
what[0] = params[0];
what[1] = params[1];
what[2] = params[2];
what[3] = params[3];
invalidate_lighting(c);
}
void lightVertex(ogles_context_t* c, vertex_t* v)
{
// emission and ambient for the whole scene
vec4_t r = c->lighting.implicitSceneEmissionAndAmbient;
uint32_t en = c->lighting.enabledLights;
if (ggl_likely(en)) {
// since we do the lighting in object-space, we don't need to
// transform each normal. However, we might still have to normalize
// it if GL_NORMALIZE is enabled.
vec4_t n;
c->arrays.normal.fetch(c, n.v,
c->arrays.normal.element(v->index & vertex_cache_t::INDEX_MASK));
// TODO: right now we handle GL_RESCALE_NORMALS as if ti were
// GL_NORMALIZE. We could optimize this by scaling mvui
// appropriately instead.
if (c->transforms.rescaleNormals)
vnorm3(n.v, n.v);
const material_t& material = c->lighting.front;
const int twoSide = c->lighting.lightModel.twoSide;
while (en) {
const int i = 31 - gglClz(en);
en &= ~(1<<i);
const light_t& l = c->lighting.lights[i];
vec4_t d, t;
GLfixed s;
GLfixed sqDist = 0x10000;
// compute vertex-to-light vector
if (ggl_unlikely(l.position.w)) {
// lightPos/1.0 - vertex/vertex.w == lightPos*vertex.w - vertex
vss3(d.v, l.objPosition.v, v->obj.w, v->obj.v);
sqDist = dot3(d.v, d.v);
vscale3(d.v, d.v, gglSqrtRecipx(sqDist));
} else {
// TODO: avoid copy here
d = l.normalizedObjPosition;
}
// ambient & diffuse
s = dot3(n.v, d.v);
s = (s<0) ? (twoSide?(-s):0) : s;
vsa3(t.v, l.implicitDiffuse.v, s, l.implicitAmbient.v);
// specular
if (ggl_unlikely(s && l.implicitSpecular.v[3])) {
vec4_t h;
h.x = d.x;
h.y = d.y;
h.z = d.z + 0x10000;
vnorm3(h.v, h.v);
s = dot3(n.v, h.v);
s = (s<0) ? (twoSide?(-s):0) : s;
if (s > 0) {
s = gglPowx(s, material.shininess);
vsa3(t.v, l.implicitSpecular.v, s, t.v);
}
}
// spot
if (ggl_unlikely(l.spotCutoff != gglIntToFixed(180))) {
GLfixed spotAtt = -dot3(l.normalizedSpotDir.v, d.v);
if (spotAtt >= l.spotCutoffCosine) {
vscale3(t.v, t.v, gglPowx(spotAtt, l.spotExp));
}
}
// attenuation
if (ggl_unlikely(l.position.w)) {
if (l.rConstAttenuation) {
s = l.rConstAttenuation;
} else {
s = gglMulAddx(sqDist, l.attenuation[2], l.attenuation[0]);
if (l.attenuation[1])
s = gglMulAddx(gglSqrtx(sqDist), l.attenuation[1], s);
s = gglRecipFast(s);
}
vscale3(t.v, t.v, s);
}
r.r += t.r;
r.g += t.g;
r.b += t.b;
}
}
v->color.r = gglClampx(r.r);
v->color.g = gglClampx(r.g);
v->color.b = gglClampx(r.b);
v->color.a = gglClampx(r.a);
v->flags |= vertex_t::LIT;
}
static void pick_scanline(context_t* c)
{
#if (!defined(DEBUG__CODEGEN_ONLY) || (DEBUG__CODEGEN_ONLY == 0))
#if ANDROID_CODEGEN == ANDROID_CODEGEN_GENERIC
c->init_y = init_y;
c->step_y = step_y__generic;
c->scanline = scanline;
return;
#endif
//printf("*** needs [%08lx:%08lx:%08lx:%08lx]\n",
// c->state.needs.n, c->state.needs.p,
// c->state.needs.t[0], c->state.needs.t[1]);
// first handle the special case that we cannot test with a filter
const uint32_t cb_format = GGL_READ_NEEDS(CB_FORMAT, c->state.needs.n);
if (GGL_READ_NEEDS(T_FORMAT, c->state.needs.t[0]) == cb_format) {
if (c->state.needs.match(noblend1to1)) {
// this will match regardless of dithering state, since both
// src and dest have the same format anyway, there is no dithering
// to be done.
const GGLFormat* f =
&(c->formats[GGL_READ_NEEDS(T_FORMAT, c->state.needs.t[0])]);
if ((f->components == GGL_RGB) ||
(f->components == GGL_RGBA) ||
(f->components == GGL_LUMINANCE) ||
(f->components == GGL_LUMINANCE_ALPHA))
{
// format must have all of RGB components
// (so the current color doesn't show through)
c->scanline = scanline_memcpy;
c->init_y = init_y_noop;
return;
}
}
}
if (c->state.needs.match(fill16noblend)) {
c->init_y = init_y_packed;
switch (c->formats[cb_format].size) {
case 1: c->scanline = scanline_memset8; return;
case 2: c->scanline = scanline_memset16; return;
case 4: c->scanline = scanline_memset32; return;
}
}
const int numFilters = sizeof(shortcuts)/sizeof(shortcut_t);
for (int i=0 ; i<numFilters ; i++) {
if (c->state.needs.match(shortcuts[i].filter)) {
c->scanline = shortcuts[i].scanline;
c->init_y = shortcuts[i].init_y;
return;
}
}
#endif // DEBUG__CODEGEN_ONLY
c->init_y = init_y;
c->step_y = step_y__generic;
#if ANDROID_ARM_CODEGEN
// we're going to have to generate some code...
// here, generate code for our pixel pipeline
const AssemblyKey<needs_t> key(c->state.needs);
sp<Assembly> assembly = gCodeCache.lookup(key);
if (assembly == 0) {
// create a new assembly region
sp<ScanlineAssembly> a = new ScanlineAssembly(c->state.needs,
ASSEMBLY_SCRATCH_SIZE);
// initialize our assembler
GGLAssembler assembler( new ARMAssembler(a) );
//GGLAssembler assembler(
// new ARMAssemblerOptimizer(new ARMAssembler(a)) );
// generate the scanline code for the given needs
int err = assembler.scanline(c->state.needs, c);
if (ggl_likely(!err)) {
// finally, cache this assembly
err = gCodeCache.cache(a->key(), a);
}
if (ggl_unlikely(err)) {
LOGE("error generating or caching assembly. Reverting to NOP.");
c->scanline = scanline_noop;
c->init_y = init_y_noop;
c->step_y = step_y__nop;
return;
}
assembly = a;
}
// release the previous assembly
if (c->scanline_as) {
c->scanline_as->decStrong(c);
}
//LOGI("using generated pixel-pipeline");
c->scanline_as = assembly.get();
c->scanline_as->incStrong(c); // hold on to assembly
c->scanline = (void(*)(context_t* c))assembly->base();
#else
// LOGW("using generic (slow) pixel-pipeline");
c->scanline = scanline;
#endif
}
