Skip to content
GitLab
Commit ffd61e26 authored by Kenneth Moreland's avatar Kenneth Moreland
Browse files

Merge branch 'DistributedBackgroundCorrect'

parents 3b07020a 8f744038
Hide whitespace changes
Inline Side-by-side
Changes.txt
View file @ ffd61e26
......@@ -105,3 +105,13 @@ Added Alltoall to communicator. (Search for Allgather for places to add in
documentation.)
icetSendRecvLargeMessages takes const array for messageDestinations.
ICET_CORRECT_COLORED_BACKGROUND is now the responsibility of the strategy,
not done automatically. icetSingleImageCollect does it for you, though.
Added internal state variables ICET_NEED_BACKGROUND_CORRECTION,
ICET_TRUE_BACKGROUND_COLOR, and ICET_TRUE_BACKGROUND_COLOR_WORD.
icetImageCorrectBackground, icetClearImageTrueBackground,
icetDecompressImageCorrectBackground, and
icetDecompressSubImageCorrectBackground functions.
src/ice-t/decompress_func_body.h
View file @ ffd61e26
......@@ -34,6 +34,9 @@
* values.
* BLEND_RGBA_FLOAT(src, dest) - same as above except src and dest
* are IceTFloat arrays.
* CORRECT_BACKGROUND - if defined, the output color will be blended
* with the true background color. This should only be set
* if ICET_NEED_BACKGROUND_CORRECTION is true.
* OFFSET - If defined to a number (or variable holding a number), skips
* that many pixels at the beginning of the image.
* PIXEL_COUNT - If defined to a number (or a variable holding a number),
......@@ -247,11 +250,21 @@
#ifdef OFFSET
_color += OFFSET;
#endif
#ifdef CORRECT_BACKGROUND
icetGetIntegerv(ICET_TRUE_BACKGROUND_COLOR_WORD,
(IceTInt *)&_background_color);
#else
icetGetIntegerv(ICET_BACKGROUND_COLOR_WORD,
(IceTInt *)&_background_color);
#endif
#ifdef COMPOSITE
#define COPY_PIXEL(c_src, c_dest) \
BLEND_RGBA_UBYTE(((IceTUByte*)c_src), ((IceTUByte*)c_dest))
#elif defined(CORRECT_BACKGROUND)
#define COPY_PIXEL(c_src, c_dest) \
ICET_BLEND_UBYTE(((IceTUByte*)c_src), \
((IceTUByte*)&_background_color), \
((IceTUByte*)c_dest))
#else
#define COPY_PIXEL(c_src, c_dest) \
c_dest[0] = c_src[0];
......@@ -282,9 +295,16 @@
#ifdef OFFSET
_color += 4*(OFFSET);
#endif
#ifdef CORRECT_BACKGROUND
icetGetFloatv(ICET_TRUE_BACKGROUND_COLOR, _background_color);
#else
icetGetFloatv(ICET_BACKGROUND_COLOR, _background_color);
#endif
#ifdef COMPOSITE
#define COPY_PIXEL(c_src, c_dest) BLEND_RGBA_FLOAT(c_src, c_dest);
#elif defined(CORRECT_BACKGROUND)
#define COPY_PIXEL(c_src, c_dest) \
ICET_BLEND_FLOAT(c_src, _background_color, c_dest);
#else
#define COPY_PIXEL(c_src, c_dest) \
c_dest[0] = c_src[0]; \
......
src/ice-t/draw.c
View file @ ffd61e26
......@@ -163,23 +163,25 @@ void icetDataReplicationGroupColor(IceTInt color)
static IceTFloat black[] = {0.0f, 0.0f, 0.0f, 0.0f};
static void drawUseBackgroundColor(const IceTFloat *background_color,
IceTUInt *background_color_word_p,
IceTBoolean *need_color_correction_p)
static void drawUseBackgroundColor(const IceTFloat *background_color)
{
IceTBoolean use_color_blending
= (IceTBoolean)( *(icetUnsafeStateGetInteger(ICET_COMPOSITE_MODE))
== ICET_COMPOSITE_MODE_BLEND);
/* Make sure background color is up to date. */
((IceTUByte *)background_color_word_p)[0]
= (IceTUByte)(255*background_color[0]);
((IceTUByte *)background_color_word_p)[1]
= (IceTUByte)(255*background_color[1]);
((IceTUByte *)background_color_word_p)[2]
= (IceTUByte)(255*background_color[2]);
((IceTUByte *)background_color_word_p)[3]
= (IceTUByte)(255*background_color[3]);
IceTUInt background_color_word;
IceTBoolean use_color_blending
= (IceTBoolean)( *(icetUnsafeStateGetInteger(ICET_COMPOSITE_MODE))
== ICET_COMPOSITE_MODE_BLEND);
((IceTUByte *)&background_color_word)[0]
= (IceTUByte)(255*background_color[0]);
((IceTUByte *)&background_color_word)[1]
= (IceTUByte)(255*background_color[1]);
((IceTUByte *)&background_color_word)[2]
= (IceTUByte)(255*background_color[2]);
((IceTUByte *)&background_color_word)[3]
= (IceTUByte)(255*background_color[3]);
icetStateSetFloatv(ICET_TRUE_BACKGROUND_COLOR, 4, background_color);
icetStateSetInteger(ICET_TRUE_BACKGROUND_COLOR_WORD, background_color_word);
if (use_color_blending) {
IceTInt display_tile;
/* We need to correct the background color by zeroing it out at
......@@ -188,18 +190,16 @@ static void drawUseBackgroundColor(const IceTFloat *background_color,
icetStateSetInteger(ICET_BACKGROUND_COLOR_WORD, 0);
icetGetIntegerv(ICET_TILE_DISPLAYED, &display_tile);
if ( (display_tile >= 0)
&& (*background_color_word_p != 0)
if ( (background_color_word != 0)
&& icetIsEnabled(ICET_CORRECT_COLORED_BACKGROUND) ) {
*need_color_correction_p = ICET_TRUE;
icetStateSetBoolean(ICET_NEED_BACKGROUND_CORRECTION, ICET_TRUE);
} else {
*need_color_correction_p = ICET_FALSE;
icetStateSetBoolean(ICET_NEED_BACKGROUND_CORRECTION, ICET_FALSE);
}
} else {
icetStateSetFloatv(ICET_BACKGROUND_COLOR, 4, background_color);
icetStateSetInteger(ICET_BACKGROUND_COLOR_WORD,
*background_color_word_p);
*need_color_correction_p = ICET_FALSE;
icetStateSetInteger(ICET_BACKGROUND_COLOR_WORD, background_color_word);
icetStateSetBoolean(ICET_NEED_BACKGROUND_CORRECTION, ICET_FALSE);
}
}
......@@ -728,36 +728,6 @@ static IceTImage drawInvokeStrategy(void)
return image;
}
static void drawCorrectBackground(IceTImage image,
const IceTFloat *background_color,
IceTUInt background_color_word)
{
IceTSizeType pixels = icetImageGetWidth(image)*icetImageGetHeight(image);
IceTEnum color_format = icetImageGetColorFormat(image);
icetTimingBlendBegin();
if (color_format == ICET_IMAGE_COLOR_RGBA_UBYTE) {
IceTUByte *color = icetImageGetColorub(image);
IceTUByte *bc = (IceTUByte *)(&background_color_word);
IceTSizeType p;
for (p = 0; p < pixels; p++, color += 4) {
ICET_UNDER_UBYTE(bc, color);
}
} else if (color_format == ICET_IMAGE_COLOR_RGBA_FLOAT) {
IceTFloat *color = icetImageGetColorf(image);
IceTSizeType p;
for (p = 0; p < pixels; p++, color += 4) {
ICET_UNDER_FLOAT(background_color, color);
}
} else {
icetRaiseError("Encountered invalid color buffer type"
" with color blending.", ICET_SANITY_CHECK_FAIL);
}
icetTimingBlendEnd();
}
IceTImage icetDrawFrame(const IceTDouble *projection_matrix,
const IceTDouble *modelview_matrix,
const IceTFloat *background_color)
......@@ -768,8 +738,6 @@ IceTImage icetDrawFrame(const IceTDouble *projection_matrix,
IceTDouble buf_read_time;
IceTDouble compose_time;
IceTDouble total_time;
IceTUInt background_color_word;
IceTBoolean need_color_correction;
icetRaiseDebug("In icetDrawFrame");
......@@ -789,9 +757,7 @@ IceTImage icetDrawFrame(const IceTDouble *projection_matrix,
icetStateSetDoublev(ICET_PROJECTION_MATRIX, 16, projection_matrix);
icetStateSetDoublev(ICET_MODELVIEW_MATRIX, 16, modelview_matrix);
drawUseBackgroundColor(background_color,
&background_color_word,
&need_color_correction);
drawUseBackgroundColor(background_color);
icetGetIntegerv(ICET_FRAME_COUNT, &frame_count);
frame_count++;
......@@ -836,11 +802,6 @@ IceTImage icetDrawFrame(const IceTDouble *projection_matrix,
image = drawInvokeStrategy();
/* Correct background color where applicable. */
if (need_color_correction) {
drawCorrectBackground(image, background_color, background_color_word);
}
/* Calculate times. */
icetGetDoublev(ICET_RENDER_TIME, &render_time);
icetGetDoublev(ICET_BUFFER_READ_TIME, &buf_read_time);
......
src/ice-t/image.c
View file @ ffd61e26
......@@ -2002,6 +2002,47 @@ void icetDecompressSubImage(const IceTSparseImage compressed_image,
#include "decompress_func_body.h"
}
void icetDecompressImageCorrectBackground(const IceTSparseImage compressed_image,
IceTImage image)
{
icetImageSetDimensions(image,
icetSparseImageGetWidth(compressed_image),
icetSparseImageGetHeight(compressed_image));
icetDecompressSubImageCorrectBackground(compressed_image, 0, image);
}
void icetDecompressSubImageCorrectBackground(
const IceTSparseImage compressed_image,
IceTSizeType offset,
IceTImage image)
{
IceTBoolean need_correction;
const IceTFloat *background_color;
const IceTUByte *background_color_word;
icetGetBooleanv(ICET_NEED_BACKGROUND_CORRECTION, &need_correction);
if (!need_correction) {
/* Do a normal decompress. */
icetDecompressSubImage(compressed_image, offset, image);
}
ICET_TEST_IMAGE_HEADER(image);
ICET_TEST_SPARSE_IMAGE_HEADER(compressed_image);
background_color = icetUnsafeStateGetFloat(ICET_TRUE_BACKGROUND_COLOR);
background_color_word =
(IceTUByte*)icetUnsafeStateGetInteger(ICET_TRUE_BACKGROUND_COLOR_WORD);
#define INPUT_SPARSE_IMAGE compressed_image
#define OUTPUT_IMAGE image
#define TIME_DECOMPRESSION
#define OFFSET offset
#define PIXEL_COUNT icetSparseImageGetNumPixels(compressed_image)
#define CORRECT_BACKGROUND
#include "decompress_func_body.h"
}
void icetComposite(IceTImage destBuffer, const IceTImage srcBuffer,
int srcOnTop)
......@@ -2187,6 +2228,75 @@ void icetCompressedCompressedComposite(const IceTSparseImage front_buffer,
icetTimingBlendEnd();
}
void icetImageCorrectBackground(IceTImage image)
{
IceTBoolean need_correction;
IceTSizeType num_pixels;
IceTEnum color_format;
icetGetBooleanv(ICET_NEED_BACKGROUND_CORRECTION, &need_correction);
if (!need_correction) { return; }
num_pixels = icetImageGetNumPixels(image);
color_format = icetImageGetColorFormat(image);
icetTimingBlendBegin();
if (color_format == ICET_IMAGE_COLOR_RGBA_UBYTE) {
IceTUByte *color = icetImageGetColorub(image);
IceTInt background_color_word;
IceTUByte *bc;
IceTSizeType p;
icetGetIntegerv(ICET_TRUE_BACKGROUND_COLOR_WORD,
&background_color_word);
bc = (IceTUByte *)(&background_color_word);
for (p = 0; p < num_pixels; p++) {
ICET_UNDER_UBYTE(bc, color);
color += 4;
}
} else if (color_format == ICET_IMAGE_COLOR_RGBA_FLOAT) {
IceTFloat *color = icetImageGetColorf(image);
IceTFloat background_color[4];
IceTSizeType p;
icetGetFloatv(ICET_TRUE_BACKGROUND_COLOR, background_color);
for (p = 0; p < num_pixels; p++) {
ICET_UNDER_FLOAT(background_color, color);
color += 4;
}
} else {
icetRaiseError("Encountered invalid color buffer type"
" with color blending.", ICET_SANITY_CHECK_FAIL);
}
icetTimingBlendEnd();
}
void icetClearImageTrueBackground(IceTImage image)
{
IceTFloat true_background[4];
IceTInt true_background_word;
IceTFloat original_background[4];
IceTInt original_background_word;
icetGetFloatv(ICET_TRUE_BACKGROUND_COLOR, true_background);
icetGetIntegerv(ICET_TRUE_BACKGROUND_COLOR_WORD, &true_background_word);
icetGetFloatv(ICET_BACKGROUND_COLOR, original_background);
icetGetIntegerv(ICET_BACKGROUND_COLOR_WORD, &original_background_word);
icetStateSetFloatv(ICET_BACKGROUND_COLOR, 4, true_background);
icetStateSetInteger(ICET_BACKGROUND_COLOR_WORD, true_background_word);
icetClearImage(image);
icetStateSetFloatv(ICET_BACKGROUND_COLOR, 4, original_background);
icetStateSetInteger(ICET_BACKGROUND_COLOR_WORD, original_background_word);
}
static IceTImage renderTile(int tile,
IceTInt *screen_viewport,
IceTInt *target_viewport,
......
src/include/IceT.h
View file @ ffd61e26
......@@ -305,16 +305,19 @@ ICET_EXPORT void icetDiagnostics(IceTBitField mask);
#define ICET_ALL_CONTAINED_TILES_MASKS (ICET_STATE_FRAME_START|(IceTEnum)0x0009)
#define ICET_TILE_CONTRIB_COUNTS (ICET_STATE_FRAME_START| (IceTEnum)0x000A)
#define ICET_TOTAL_IMAGE_COUNT (ICET_STATE_FRAME_START | (IceTEnum)0x000B)
#define ICET_VALID_PIXELS_TILE (ICET_STATE_FRAME_START | (IceTEnum)0x000C)
#define ICET_VALID_PIXELS_OFFSET (ICET_STATE_FRAME_START | (IceTEnum)0x000D)
#define ICET_VALID_PIXELS_NUM (ICET_STATE_FRAME_START | (IceTEnum)0x000E)
#define ICET_RENDERED_VIEWPORT (ICET_STATE_FRAME_START | (IceTEnum)0x0010)
#define ICET_RENDER_BUFFER (ICET_STATE_FRAME_START | (IceTEnum)0x0011)
#define ICET_RENDER_BUFFER_SIZE (ICET_STATE_FRAME_START | (IceTEnum)0x0012)
#define ICET_RENDER_BUFFER_HOLD (ICET_STATE_FRAME_START | (IceTEnum)0x0013)
#define ICET_TILE_PROJECTIONS (ICET_STATE_FRAME_START | (IceTEnum)0x0014)
#define ICET_NEED_BACKGROUND_CORRECTION (ICET_STATE_FRAME_START | (IceTEnum)0x000C)
#define ICET_TRUE_BACKGROUND_COLOR (ICET_STATE_FRAME_START | (IceTEnum)0x000D)
#define ICET_TRUE_BACKGROUND_COLOR_WORD (ICET_STATE_FRAME_START | (IceTEnum)0x000E)
#define ICET_VALID_PIXELS_TILE (ICET_STATE_FRAME_START | (IceTEnum)0x0018)
#define ICET_VALID_PIXELS_OFFSET (ICET_STATE_FRAME_START | (IceTEnum)0x0019)
#define ICET_VALID_PIXELS_NUM (ICET_STATE_FRAME_START | (IceTEnum)0x001A)
#define ICET_RENDERED_VIEWPORT (ICET_STATE_FRAME_START | (IceTEnum)0x0020)
#define ICET_RENDER_BUFFER (ICET_STATE_FRAME_START | (IceTEnum)0x0021)
#define ICET_RENDER_BUFFER_SIZE (ICET_STATE_FRAME_START | (IceTEnum)0x0022)
#define ICET_RENDER_BUFFER_HOLD (ICET_STATE_FRAME_START | (IceTEnum)0x0023)
#define ICET_TILE_PROJECTIONS (ICET_STATE_FRAME_START | (IceTEnum)0x0024)
#define ICET_STATE_TIMING_START (IceTEnum)0x000000C0
......
src/include/IceTDevImage.h
View file @ ffd61e26
......@@ -153,6 +153,15 @@ ICET_EXPORT void icetDecompressSubImage(const IceTSparseImage compressed_image,
IceTSizeType offset,
IceTImage image);
ICET_EXPORT void icetDecompressImageCorrectBackground(
const IceTSparseImage compressed_image,
IceTImage image);
ICET_EXPORT void icetDecompressSubImageCorrectBackground(
const IceTSparseImage compressed_image,
IceTSizeType offset,
IceTImage image);
ICET_EXPORT void icetComposite(IceTImage destBuffer,
const IceTImage srcBuffer,
int srcOnTop);
......@@ -171,6 +180,9 @@ ICET_EXPORT void icetCompressedCompressedComposite(
const IceTSparseImage back_buffer,
IceTSparseImage dest_buffer);
ICET_EXPORT void icetImageCorrectBackground(IceTImage image);
ICET_EXPORT void icetClearImageTrueBackground(IceTImage image);
#define ICET_BLEND_UBYTE(front, back, dest) \
{ \
IceTUInt afactor = 255 - (front)[3]; \
......
src/strategies/common.c
View file @ ffd61e26
......@@ -672,7 +672,9 @@ void icetSingleImageCollect(const IceTSparseImage input_image,
if (piece_size > 0) {
/* Decompress data into appropriate offset of result image. */
icetDecompressSubImage(input_image, piece_offset, result_image);
icetDecompressSubImageCorrectBackground(input_image,
piece_offset,
result_image);
} else if (rank != dest) {
/* If this function is called for multiple collections, it is likely
that the local process will not have data for all collections. To
......
src/strategies/direct.c
View file @ ffd61e26
......@@ -71,17 +71,24 @@ IceTImage icetDirectCompose(void)
outSparseImage,
tile_image_dest);
if ((display_tile >= 0) && (num_contributors < 1)) {
/* Must be displaying a blank tile. */
const IceTInt *tile_viewports
= icetUnsafeStateGetInteger(ICET_TILE_VIEWPORTS);
const IceTInt *display_tile_viewport = tile_viewports + 4*display_tile;
IceTInt display_tile_width = display_tile_viewport[2];
IceTInt display_tile_height = display_tile_viewport[3];
if (display_tile >= 0) {
if (num_contributors > 0) {
icetImageCorrectBackground(image);
} else {
/* Must be displaying a blank tile. */
const IceTInt *tile_viewports
= icetUnsafeStateGetInteger(ICET_TILE_VIEWPORTS);
const IceTInt *display_tile_viewport
= tile_viewports + 4*display_tile;
IceTInt display_tile_width = display_tile_viewport[2];
IceTInt display_tile_height = display_tile_viewport[3];
icetRaiseDebug("Returning blank tile.");
icetImageSetDimensions(image, display_tile_width, display_tile_height);
icetClearImage(image);
icetRaiseDebug("Returning blank tile.");
icetImageSetDimensions(image,
display_tile_width,
display_tile_height);
icetClearImageTrueBackground(image);
}
}
return image;
......
src/strategies/reduce.c
View file @ ffd61e26
......@@ -515,7 +515,7 @@ IceTImage reduceCollect(const IceTSparseImage composited_image,
if ((tile_displayed >= 0) && (tile_displayed != compose_tile)) {
/* Return empty image if nothing in this tile. */
icetRaiseDebug("Clearing pixels");
icetClearImage(result_image);
icetClearImageTrueBackground(result_image);
}
return result_image;
......
src/strategies/split.c
View file @ ffd61e26
......@@ -60,6 +60,8 @@ static void icetCollectImage(IceTImage imageFragment,
color_format = icetImageGetColorFormat(imageFragment);
depth_format = icetImageGetDepthFormat(imageFragment);
icetImageCorrectBackground(imageFragment);
icetTimingCollectBegin();
if (color_format != ICET_IMAGE_COLOR_NONE) {
......@@ -122,7 +124,7 @@ static void icetCollectImage(IceTImage imageFragment,
}
}
} else {
icetClearImage(fullImage);
icetClearImageTrueBackground(fullImage);
}
}
......@@ -200,7 +202,7 @@ IceTImage icetSplitCompose(void)
my_height = tile_viewports[4*tile_displayed + 3];
fullImage = icetGetStateBufferImage(SPLIT_FULL_IMAGE_BUFFER,
my_width, my_height);
icetClearImage(fullImage);
icetClearImageTrueBackground(fullImage);
}
return fullImage;
}
......
src/strategies/vtree.c
View file @ ffd61e26
......@@ -226,13 +226,35 @@ IceTImage icetVtreeCompose(void)
/* Hacks for when "this" tile was not rendered. */
if ((tile_displayed >= 0) && (tile_displayed != tile_held)) {
if (all_contained_tmasks[rank*num_tiles + tile_displayed]) {
/* Only "this" node draws "this" tile. Because the image never */
/* needed to be transferred, it was never rendered above. Just */
/* render it now. */
/* Only "this" node draws "this" tile. Because the image never needed
to be transferred, it was never rendered above. Just render it
now. We might save some time by rendering with the true
background color rather than correcting it later. */
IceTFloat true_background[4];
IceTInt true_background_word;
IceTFloat original_background[4];
IceTInt original_background_word;
icetGetFloatv(ICET_TRUE_BACKGROUND_COLOR, true_background);
icetGetIntegerv(ICET_TRUE_BACKGROUND_COLOR_WORD,
&true_background_word);
icetGetFloatv(ICET_BACKGROUND_COLOR, original_background);
icetGetIntegerv(ICET_BACKGROUND_COLOR_WORD,
&original_background_word);
icetStateSetFloatv(ICET_BACKGROUND_COLOR, 4, true_background);
icetStateSetInteger(ICET_BACKGROUND_COLOR_WORD,
true_background_word);
icetRaiseDebug("Rendering tile to display.");
/* This may uncessarily read a buffer if not outputing an input
buffer */
icetGetTileImage(tile_displayed, image);
icetStateSetFloatv(ICET_BACKGROUND_COLOR, 4, original_background);
icetStateSetInteger(ICET_BACKGROUND_COLOR_WORD,
original_background_word);
} else {
/* "This" tile is blank. */
const IceTInt *display_tile_viewport
......@@ -243,8 +265,10 @@ IceTImage icetVtreeCompose(void)
icetRaiseDebug("Returning blank image.");
icetImageSetDimensions(
image, display_tile_width, display_tile_height);
icetClearImage(image);
icetClearImageTrueBackground(image);
}
} else if (tile_displayed >= 0) {
icetImageCorrectBackground(image);
}
return image;
......
tests/BackgroundCorrect.c 0 → 100644
View file @ ffd61e26
/* -*- c -*- *****************************************************************
** Copyright (C) 2011 Sandia Corporation
** Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
** the U.S. Government retains certain rights in this software.
**
** This source code is released under the New BSD License.
**
** This tests the ICET_CORRECT_COLORED_BACKGROUND option.
** This tests the ICET_MAX_IMAGE_SPLIT option. It sets the max image split to
** less than the total number of processes and makes sure that the image is
** still composited correctly.
*****************************************************************************/
#include <IceT.h>
#include "test_codes.h"
#include "test-util.h"
#include <IceTDevContext.h>
#include <IceTDevImage.h>
#include <IceTDevMatrix.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#define PROC_REGION_WIDTH 10
#define PROC_REGION_HEIGHT 10
const IceTFloat g_background_color[4] = { 0.5, 0.5, 0.5, 1.0 };
const IceTFloat g_foreground_color[4] = { 0.0, 0.25, 0.5, 0.5 };
const IceTFloat g_blended_color[4] = { 0.25, 0.5, 0.75, 1.0 };
static IceTBoolean ColorsEqual(const IceTFloat *color1, const IceTFloat *color2)
{
IceTBoolean result;
result = (color1[0] == color2[0]);
result &= (color1[1] == color2[1]);
result &= (color1[2] == color2[2]);
result &= (color1[3] == color2[3]);
return result;
}
static void BackgroundCorrectDraw(const IceTDouble *projection_matrix,
const IceTDouble *modelview_matrix,
const IceTFloat *background_color,
const IceTInt *readback_viewport,
IceTImage result)
{
IceTDouble full_transform[16];
IceTSizeType width;
IceTSizeType height;
IceTFloat *colors;
IceTFloat blended_color[4];
/* This is mostly done for completeness. Because we are blending and
correcting the color, we totally expect background_color to be all zeros,
and therefore blended_color should be equal to g_foreground_color. The
real blending will happen within IceT under the covers. */
ICET_BLEND_FLOAT(g_foreground_color, background_color, blended_color);
width = icetImageGetWidth(result);
height = icetImageGetHeight(result);
colors = icetImageGetColorf(result);
/* Get full transform all the way to window coordinates (pixels). */ {
IceTDouble scale_transform[16];
IceTDouble translate_transform[16];
icetMatrixScale(0.5*width, 0.5*height, 0.5, scale_transform);
icetMatrixTranslate(1.0, 1.0, 1.0, translate_transform);
icetMatrixMultiply(full_transform,scale_transform,translate_transform);
icetMatrixPostMultiply(full_transform, projection_matrix);
icetMatrixPostMultiply(full_transform, modelview_matrix);
}
/* Clear out the image (testing purposes only). */ {
IceTSizeType pixel;
for (pixel = 0; pixel < width*height; pixel++) {
colors[pixel] = -1.0;
}
}
/* Set my pixels. */ {
IceTInt rank;
IceTSizeType region_y_start;
IceTSizeType region_x;
IceTSizeType region_y;
icetGetIntegerv(ICET_RANK, &rank);
region_y_start = rank*PROC_REGION_HEIGHT;
for (region_y = 0; region_y < PROC_REGION_HEIGHT; region_y++) {
for (region_x = 0; region_x < PROC_REGION_WIDTH; region_x++) {
IceTDouble object_coord[4];
IceTDouble window_coord[4];
IceTSizeType window_pixel[2];
IceTSizeType readback_lower[2];
IceTSizeType readback_upper[2];
IceTBoolean in_readback;
object_coord[0] = (IceTDouble)region_x;
object_coord[1] = (IceTDouble)(region_y + region_y_start);
object_coord[2] = 0.0;
object_coord[3] = 1.0;
icetMatrixVectorMultiply(window_coord,