auto import from //depot/cupcake/@135843
diff --git a/libpixelflinger/raster.cpp b/libpixelflinger/raster.cpp
new file mode 100644
index 0000000..d751202
--- /dev/null
+++ b/libpixelflinger/raster.cpp
@@ -0,0 +1,217 @@
+/* libs/pixelflinger/raster.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 <string.h>
+
+#include "raster.h"
+#include "trap.h"
+
+namespace android {
+
+static void ggl_rasterPos2x(void* con, GGLfixed x, GGLfixed y);
+static void ggl_rasterPos2i(void* con, GGLint x, GGLint y);
+static void ggl_copyPixels(void* con, GGLint xs, GGLint ys,
+ GGLsizei width, GGLsizei height, GGLenum type);
+
+void ggl_init_raster(context_t* c)
+{
+ GGLContext& procs = *(GGLContext*)c;
+ GGL_INIT_PROC(procs, copyPixels);
+ GGL_INIT_PROC(procs, rasterPos2x);
+ GGL_INIT_PROC(procs, rasterPos2i);
+}
+
+void ggl_rasterPos2x(void* con, GGLfixed x, GGLfixed y)
+{
+ GGL_CONTEXT(c, con);
+ // raster pos should be processed just like glVertex
+ c->state.raster.x = x;
+ c->state.raster.y = y;
+}
+
+void ggl_rasterPos2i(void* con, GGLint x, GGLint y)
+{
+ ggl_rasterPos2x(con, gglIntToFixed(x), gglIntToFixed(y));
+}
+
+void ggl_copyPixels(void* con, GGLint xs, GGLint ys,
+ GGLsizei width, GGLsizei height, GGLenum type)
+{
+ GGL_CONTEXT(c, con);
+
+ // color-buffer
+ surface_t* cb = &(c->state.buffers.color);
+
+ // undefined behaviour if we try to copy from outside the surface
+ if (uint32_t(xs) > cb->width)
+ return;
+ if (uint32_t(ys) > cb->height)
+ return;
+ if (uint32_t(xs + width) > cb->width)
+ return;
+ if (uint32_t(ys + height) > cb->height)
+ return;
+
+ // copy to current raster position
+ GGLint xd = gglFixedToIntRound(c->state.raster.x);
+ GGLint yd = gglFixedToIntRound(c->state.raster.y);
+
+ // clip to scissor
+ if (xd < GGLint(c->state.scissor.left)) {
+ GGLint offset = GGLint(c->state.scissor.left) - xd;
+ xd = GGLint(c->state.scissor.left);
+ xs += offset;
+ width -= offset;
+ }
+ if (yd < GGLint(c->state.scissor.top)) {
+ GGLint offset = GGLint(c->state.scissor.top) - yd;
+ yd = GGLint(c->state.scissor.top);
+ ys += offset;
+ height -= offset;
+ }
+ if ((xd + width) > GGLint(c->state.scissor.right)) {
+ width = GGLint(c->state.scissor.right) - xd;
+ }
+ if ((yd + height) > GGLint(c->state.scissor.bottom)) {
+ height = GGLint(c->state.scissor.bottom) - yd;
+ }
+
+ if (width<=0 || height<=0) {
+ return; // nothing to copy
+ }
+
+ if (xs==xd && ys==yd) {
+ // nothing to do, but be careful, this might not be true when we support
+ // gglPixelTransfer, gglPixelMap and gglPixelZoom
+ return;
+ }
+
+ const GGLFormat* fp = &(c->formats[cb->format]);
+ uint8_t* src = reinterpret_cast<uint8_t*>(cb->data)
+ + (xs + (cb->stride * ys)) * fp->size;
+ uint8_t* dst = reinterpret_cast<uint8_t*>(cb->data)
+ + (xd + (cb->stride * yd)) * fp->size;
+ const size_t bpr = cb->stride * fp->size;
+ const size_t rowsize = width * fp->size;
+ size_t yc = height;
+
+ if (ys < yd) {
+ // bottom to top
+ src += height * bpr;
+ dst += height * bpr;
+ do {
+ dst -= bpr;
+ src -= bpr;
+ memcpy(dst, src, rowsize);
+ } while (--yc);
+ } else {
+ if (ys == yd) {
+ // might be right to left
+ do {
+ memmove(dst, src, rowsize);
+ dst += bpr;
+ src += bpr;
+ } while (--yc);
+ } else {
+ // top to bottom
+ do {
+ memcpy(dst, src, rowsize);
+ dst += bpr;
+ src += bpr;
+ } while (--yc);
+ }
+ }
+}
+
+}; // namespace android
+
+using namespace android;
+
+GGLint gglBitBlti(GGLContext* con, int tmu, GGLint crop[4], GGLint where[4])
+{
+ GGL_CONTEXT(c, (void*)con);
+
+ GGLint x = where[0];
+ GGLint y = where[1];
+ GGLint w = where[2];
+ GGLint h = where[3];
+
+ // exclsively enable this tmu
+ const GGLSurface& cbSurface = c->state.buffers.color.s;
+ c->procs.activeTexture(c, tmu);
+ c->procs.disable(c, GGL_W_LERP);
+
+ uint32_t tmus = 1UL<<tmu;
+ if (c->state.enabled_tmu != tmus) {
+ c->activeTMU->enable = 1;
+ c->state.enabled_tmu = tmus;
+ c->state.enables |= GGL_ENABLE_TMUS;
+ ggl_state_changed(c, GGL_TMU_STATE);
+ }
+
+ const GGLint Wcr = crop[2];
+ const GGLint Hcr = crop[3];
+ if ((w == Wcr) && (h == Hcr)) {
+ c->procs.texGeni(c, GGL_S, GGL_TEXTURE_GEN_MODE, GGL_ONE_TO_ONE);
+ c->procs.texGeni(c, GGL_T, GGL_TEXTURE_GEN_MODE, GGL_ONE_TO_ONE);
+ const GGLint Ucr = crop[0];
+ const GGLint Vcr = crop[1];
+ const GGLint s0 = Ucr - x;
+ const GGLint t0 = Vcr - y;
+ c->procs.texCoord2i(c, s0, t0);
+ c->procs.recti(c, x, y, x+w, y+h);
+ } else {
+ int32_t texcoords[8];
+ x = gglIntToFixed(x);
+ y = gglIntToFixed(y);
+
+ // we CLAMP here, which works with premultiplied (s,t)
+ c->procs.texParameteri(c, GGL_TEXTURE_2D, GGL_TEXTURE_WRAP_S, GGL_CLAMP);
+ c->procs.texParameteri(c, GGL_TEXTURE_2D, GGL_TEXTURE_WRAP_T, GGL_CLAMP);
+ c->procs.texGeni(c, GGL_S, GGL_TEXTURE_GEN_MODE, GGL_AUTOMATIC);
+ c->procs.texGeni(c, GGL_T, GGL_TEXTURE_GEN_MODE, GGL_AUTOMATIC);
+
+ const GGLint Ucr = crop[0] << 16;
+ const GGLint Vcr = crop[1] << 16;
+ const GGLint Wcr = crop[2] << 16;
+ const GGLint Hcr = crop[3] << 16;
+
+ // computes texture coordinates (pre-multiplied)
+ int32_t dsdx = Wcr / w; // dsdx = ((Wcr/w)/Wt)*Wt
+ int32_t dtdy = Hcr / h; // dtdy = ((Hcr/h)/Ht)*Ht
+ int32_t s0 = Ucr - gglMulx(dsdx, x); // s0 = Ucr - x * dsdx
+ int32_t t0 = Vcr - gglMulx(dtdy, y); // t0 = Vcr - y * dtdy
+ texcoords[0] = s0;
+ texcoords[1] = dsdx;
+ texcoords[2] = 0;
+ texcoords[3] = t0;
+ texcoords[4] = 0;
+ texcoords[5] = dtdy;
+ texcoords[6] = 0;
+ texcoords[7] = 0;
+ c->procs.texCoordGradScale8xv(c, tmu, texcoords);
+ c->procs.recti(c,
+ gglFixedToIntRound(x),
+ gglFixedToIntRound(y),
+ gglFixedToIntRound(x)+w,
+ gglFixedToIntRound(y)+h);
+ }
+ return 0;
+}
+