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-rw-r--r--opengl/libagl/vertex.cpp247
1 files changed, 0 insertions, 247 deletions
diff --git a/opengl/libagl/vertex.cpp b/opengl/libagl/vertex.cpp
deleted file mode 100644
index dad04d6..0000000
--- a/opengl/libagl/vertex.cpp
+++ /dev/null
@@ -1,247 +0,0 @@
-/* libs/opengles/vertex.cpp
-**
-** Copyright 2006, The Android Open Source Project
-**
-** Licensed under the Apache License, Version 2.0 (the "License");
-** you may not use this file except in compliance with the License.
-** You may obtain a copy of the License at
-**
-** http://www.apache.org/licenses/LICENSE-2.0
-**
-** Unless required by applicable law or agreed to in writing, software
-** distributed under the License is distributed on an "AS IS" BASIS,
-** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-** See the License for the specific language governing permissions and
-** limitations under the License.
-*/
-
-#include <stdio.h>
-#include <stdlib.h>
-#include "context.h"
-#include "fp.h"
-#include "vertex.h"
-#include "state.h"
-#include "matrix.h"
-
-namespace android {
-
-// ----------------------------------------------------------------------------
-
-void ogles_init_vertex(ogles_context_t* c)
-{
- c->cull.enable = GL_FALSE;
- c->cull.cullFace = GL_BACK;
- c->cull.frontFace = GL_CCW;
-
- c->current.color.r = 0x10000;
- c->current.color.g = 0x10000;
- c->current.color.b = 0x10000;
- c->current.color.a = 0x10000;
-
- c->currentNormal.z = 0x10000;
-}
-
-void ogles_uninit_vertex(ogles_context_t* c)
-{
-}
-
-// ----------------------------------------------------------------------------
-// vertex processing
-// ----------------------------------------------------------------------------
-
-// Divides a vertex clip coordinates by W
-static inline
-void perspective(ogles_context_t* c, vertex_t* v, uint32_t enables)
-{
- // [x,y,z]window = vpt * ([x,y,z]clip / clip.w)
- // [w]window = 1/w
-
- // With a regular projection generated by glFrustum(),
- // we have w=-z, therefore, w is in [zNear, zFar].
- // Also, zNear and zFar are stricly positive,
- // and 1/w (window.w) is in [1/zFar, 1/zNear], usually this
- // means ]0, +inf[ -- however, it is always recommended
- // to use as large values as possible for zNear.
- // All in all, w is usually smaller than 1.0 (assuming
- // zNear is at least 1.0); and even if zNear is smaller than 1.0
- // values of w won't be too big.
-
- const int32_t rw = gglRecip28(v->clip.w);
- const GLfixed* const m = c->transforms.vpt.transform.matrix.m;
- v->window.w = rw;
- v->window.x = gglMulAddx(gglMulx(v->clip.x, rw, 16), m[ 0], m[12], 28);
- v->window.y = gglMulAddx(gglMulx(v->clip.y, rw, 16), m[ 5], m[13], 28);
- v->window.x = TRI_FROM_FIXED(v->window.x);
- v->window.y = TRI_FROM_FIXED(v->window.y);
- if (enables & GGL_ENABLE_DEPTH_TEST) {
- v->window.z = gglMulAddx(gglMulx(v->clip.z, rw, 16), m[10], m[14], 28);
- }
-}
-
-// frustum clipping and W-divide
-static inline
-void clipFrustumPerspective(ogles_context_t* c, vertex_t* v, uint32_t enables)
-{
- // ndc = clip / W
- // window = ncd * viewport
-
- // clip to the view-volume
- uint32_t clip = v->flags & vertex_t::CLIP_ALL;
- const GLfixed w = v->clip.w;
- if (v->clip.x < -w) clip |= vertex_t::CLIP_L;
- if (v->clip.x > w) clip |= vertex_t::CLIP_R;
- if (v->clip.y < -w) clip |= vertex_t::CLIP_B;
- if (v->clip.y > w) clip |= vertex_t::CLIP_T;
- if (v->clip.z < -w) clip |= vertex_t::CLIP_N;
- if (v->clip.z > w) clip |= vertex_t::CLIP_F;
-
- v->flags |= clip;
- c->arrays.cull &= clip;
-
- if (ggl_likely(!clip)) {
- // if the vertex is clipped, we don't do the perspective
- // divide, since we don't need its window coordinates.
- perspective(c, v, enables);
- }
-}
-
-// frustum clipping, user clipping and W-divide
-static inline
-void clipAllPerspective(ogles_context_t* c, vertex_t* v, uint32_t enables)
-{
- // compute eye coordinates
- c->arrays.mv_transform(
- &c->transforms.modelview.transform, &v->eye, &v->obj);
- v->flags |= vertex_t::EYE;
-
- // clip this vertex against each user clip plane
- uint32_t clip = 0;
- int planes = c->clipPlanes.enable;
- while (planes) {
- const int i = 31 - gglClz(planes);
- planes &= ~(1<<i);
- // XXX: we should have a special dot() for 2,3,4 coords vertices
- GLfixed d = dot4(c->clipPlanes.plane[i].equation.v, v->eye.v);
- if (d < 0) {
- clip |= 0x100<<i;
- }
- }
- v->flags |= clip;
-
- clipFrustumPerspective(c, v, enables);
-}
-
-// ----------------------------------------------------------------------------
-
-void ogles_vertex_project(ogles_context_t* c, vertex_t* v) {
- perspective(c, v, c->rasterizer.state.enables);
-}
-
-void ogles_vertex_perspective2D(ogles_context_t* c, vertex_t* v)
-{
- // here we assume w=1.0 and the viewport transformation
- // has been applied already.
- c->arrays.cull = 0;
- v->window.x = TRI_FROM_FIXED(v->clip.x);
- v->window.y = TRI_FROM_FIXED(v->clip.y);
- v->window.z = v->clip.z;
- v->window.w = v->clip.w << 12;
-}
-
-void ogles_vertex_perspective3DZ(ogles_context_t* c, vertex_t* v) {
- clipFrustumPerspective(c, v, GGL_ENABLE_DEPTH_TEST);
-}
-void ogles_vertex_perspective3D(ogles_context_t* c, vertex_t* v) {
- clipFrustumPerspective(c, v, 0);
-}
-void ogles_vertex_clipAllPerspective3DZ(ogles_context_t* c, vertex_t* v) {
- clipAllPerspective(c, v, GGL_ENABLE_DEPTH_TEST);
-}
-void ogles_vertex_clipAllPerspective3D(ogles_context_t* c, vertex_t* v) {
- clipAllPerspective(c, v, 0);
-}
-
-static void clipPlanex(GLenum plane, const GLfixed* equ, ogles_context_t* c)
-{
- const int p = plane - GL_CLIP_PLANE0;
- if (ggl_unlikely(uint32_t(p) > (GL_CLIP_PLANE5 - GL_CLIP_PLANE0))) {
- ogles_error(c, GL_INVALID_ENUM);
- return;
- }
-
- vec4_t& equation = c->clipPlanes.plane[p].equation;
- memcpy(equation.v, equ, sizeof(vec4_t));
-
- ogles_validate_transform(c, transform_state_t::MVIT);
- transform_t& mvit = c->transforms.mvit4;
- mvit.point4(&mvit, &equation, &equation);
-}
-
-// ----------------------------------------------------------------------------
-}; // namespace android
-// ----------------------------------------------------------------------------
-
-using namespace android;
-
-
-void glColor4f(GLfloat r, GLfloat g, GLfloat b, GLfloat a)
-{
- ogles_context_t* c = ogles_context_t::get();
- c->current.color.r = gglFloatToFixed(r);
- c->currentColorClamped.r = gglClampx(c->current.color.r);
- c->current.color.g = gglFloatToFixed(g);
- c->currentColorClamped.g = gglClampx(c->current.color.g);
- c->current.color.b = gglFloatToFixed(b);
- c->currentColorClamped.b = gglClampx(c->current.color.b);
- c->current.color.a = gglFloatToFixed(a);
- c->currentColorClamped.a = gglClampx(c->current.color.a);
-}
-
-void glColor4x(GLfixed r, GLfixed g, GLfixed b, GLfixed a)
-{
- ogles_context_t* c = ogles_context_t::get();
- c->current.color.r = r;
- c->current.color.g = g;
- c->current.color.b = b;
- c->current.color.a = a;
- c->currentColorClamped.r = gglClampx(r);
- c->currentColorClamped.g = gglClampx(g);
- c->currentColorClamped.b = gglClampx(b);
- c->currentColorClamped.a = gglClampx(a);
-}
-
-void glNormal3f(GLfloat x, GLfloat y, GLfloat z)
-{
- ogles_context_t* c = ogles_context_t::get();
- c->currentNormal.x = gglFloatToFixed(x);
- c->currentNormal.y = gglFloatToFixed(y);
- c->currentNormal.z = gglFloatToFixed(z);
-}
-
-void glNormal3x(GLfixed x, GLfixed y, GLfixed z)
-{
- ogles_context_t* c = ogles_context_t::get();
- c->currentNormal.x = x;
- c->currentNormal.y = y;
- c->currentNormal.z = z;
-}
-
-// ----------------------------------------------------------------------------
-
-void glClipPlanef(GLenum plane, const GLfloat* equ)
-{
- const GLfixed equx[4] = {
- gglFloatToFixed(equ[0]),
- gglFloatToFixed(equ[1]),
- gglFloatToFixed(equ[2]),
- gglFloatToFixed(equ[3])
- };
- ogles_context_t* c = ogles_context_t::get();
- clipPlanex(plane, equx, c);
-}
-
-void glClipPlanex(GLenum plane, const GLfixed* equ)
-{
- ogles_context_t* c = ogles_context_t::get();
- clipPlanex(plane, equ, c);
-}
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