2009-03-04 11:32:55 +08:00
|
|
|
/* 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,
|
2014-02-17 23:15:46 +08:00
|
|
|
GGLsizei width, GGLsizei height, GGLenum /*type*/)
|
2009-03-04 11:32:55 +08:00
|
|
|
{
|
|
|
|
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;
|
|
|
|
|
2010-08-10 02:56:47 +08:00
|
|
|
GGLint gglBitBlit(GGLContext* con, int tmu, GGLint crop[4], GGLint where[4])
|
2009-03-04 11:32:55 +08:00
|
|
|
{
|
|
|
|
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
|
|
|
|
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;
|
|
|
|
}
|
|
|
|
|