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|
/*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
* All rights reserved.
*/
/** \file
* \ingroup edscr
*/
#include <stdio.h>
#include <string.h>
#include "DNA_userdef_types.h"
#include "DNA_vec_types.h"
#include "BLI_math.h"
#include "BLI_utildefines.h"
#include "BKE_context.h"
#include "BIF_glutil.h"
#include "IMB_colormanagement.h"
#include "IMB_imbuf_types.h"
#include "GPU_immediate.h"
#include "GPU_matrix.h"
#include "GPU_texture.h"
#ifdef __APPLE__
# include "GPU_state.h"
#endif
#include "UI_interface.h"
/* ******************************************** */
static void immDrawPixelsTexSetupAttributes(IMMDrawPixelsTexState *state)
{
GPUVertFormat *vert_format = immVertexFormat();
state->pos = GPU_vertformat_attr_add(vert_format, "pos", GPU_COMP_F32, 2, GPU_FETCH_FLOAT);
state->texco = GPU_vertformat_attr_add(
vert_format, "texCoord", GPU_COMP_F32, 2, GPU_FETCH_FLOAT);
}
IMMDrawPixelsTexState immDrawPixelsTexSetup(int builtin)
{
IMMDrawPixelsTexState state;
immDrawPixelsTexSetupAttributes(&state);
state.shader = GPU_shader_get_builtin_shader(builtin);
/* Shader will be unbind by immUnbindProgram in a `immDrawPixelsTex` function. */
immBindBuiltinProgram(builtin);
immUniform1i("image", 0);
state.do_shader_unbind = true;
return state;
}
void immDrawPixelsTexScaledFullSize(const IMMDrawPixelsTexState *state,
const float x,
const float y,
const int img_w,
const int img_h,
const eGPUTextureFormat gpu_format,
const bool use_filter,
const void *rect,
const float scaleX,
const float scaleY,
const float xzoom,
const float yzoom,
const float color[4])
{
static const float white[4] = {1.0f, 1.0f, 1.0f, 1.0f};
const float draw_width = img_w * scaleX * xzoom;
const float draw_height = img_h * scaleY * yzoom;
/* Downscaling with regular bilinear interpolation (i.e. #GL_LINEAR) doesn't give good filtering
* results. Mipmaps can be used to get better results (i.e. #GL_LINEAR_MIPMAP_LINEAR), so always
* use mipmaps when filtering. */
const bool use_mipmap = use_filter && ((draw_width < img_w) || (draw_height < img_h));
GPUTexture *tex = GPU_texture_create_2d("immDrawPixels", img_w, img_h, 1, gpu_format, NULL);
const bool use_float_data = ELEM(gpu_format, GPU_RGBA16F, GPU_RGB16F, GPU_R16F);
eGPUDataFormat gpu_data_format = (use_float_data) ? GPU_DATA_FLOAT : GPU_DATA_UBYTE;
GPU_texture_update(tex, gpu_data_format, rect);
GPU_texture_filter_mode(tex, use_filter);
if (use_mipmap) {
GPU_texture_generate_mipmap(tex);
GPU_texture_mipmap_mode(tex, true, true);
}
GPU_texture_wrap_mode(tex, false, true);
GPU_texture_bind(tex, 0);
/* optional */
/* NOTE: Shader could be null for GLSL OCIO drawing, it is fine, since
* it does not need color.
*/
if (state->shader != NULL && GPU_shader_get_uniform(state->shader, "color") != -1) {
immUniformColor4fv((color) ? color : white);
}
uint pos = state->pos, texco = state->texco;
immBegin(GPU_PRIM_TRI_FAN, 4);
immAttr2f(texco, 0.0f, 0.0f);
immVertex2f(pos, x, y);
immAttr2f(texco, 1.0f, 0.0f);
immVertex2f(pos, x + draw_width, y);
immAttr2f(texco, 1.0f, 1.0f);
immVertex2f(pos, x + draw_width, y + draw_height);
immAttr2f(texco, 0.0f, 1.0f);
immVertex2f(pos, x, y + draw_height);
immEnd();
if (state->do_shader_unbind) {
immUnbindProgram();
}
GPU_texture_unbind(tex);
GPU_texture_free(tex);
}
void immDrawPixelsTexTiled_scaling_clipping(IMMDrawPixelsTexState *state,
float x,
float y,
int img_w,
int img_h,
eGPUTextureFormat gpu_format,
bool use_filter,
void *rect,
float scaleX,
float scaleY,
float clip_min_x,
float clip_min_y,
float clip_max_x,
float clip_max_y,
float xzoom,
float yzoom,
const float color[4])
{
int subpart_x, subpart_y, tex_w = 256, tex_h = 256;
int seamless, offset_x, offset_y, nsubparts_x, nsubparts_y;
int components;
const bool use_clipping = ((clip_min_x < clip_max_x) && (clip_min_y < clip_max_y));
const float white[4] = {1.0f, 1.0f, 1.0f, 1.0f};
if (ELEM(gpu_format, GPU_RGBA8, GPU_RGBA16F)) {
components = 4;
}
else if (ELEM(gpu_format, GPU_RGB16F)) {
components = 3;
}
else if (ELEM(gpu_format, GPU_R8, GPU_R16F)) {
components = 1;
}
else {
BLI_assert_msg(0, "Incompatible format passed to immDrawPixels");
return;
}
const bool use_float_data = ELEM(gpu_format, GPU_RGBA16F, GPU_RGB16F, GPU_R16F);
eGPUDataFormat gpu_data = (use_float_data) ? GPU_DATA_FLOAT : GPU_DATA_UBYTE;
size_t stride = components * ((use_float_data) ? sizeof(float) : sizeof(uchar));
GPUTexture *tex = GPU_texture_create_2d("immDrawPixels", tex_w, tex_h, 1, gpu_format, NULL);
GPU_texture_filter_mode(tex, use_filter);
GPU_texture_wrap_mode(tex, false, true);
GPU_texture_bind(tex, 0);
/* setup seamless 2=on, 0=off */
seamless = ((tex_w < img_w || tex_h < img_h) && tex_w > 2 && tex_h > 2) ? 2 : 0;
offset_x = tex_w - seamless;
offset_y = tex_h - seamless;
nsubparts_x = (img_w + (offset_x - 1)) / (offset_x);
nsubparts_y = (img_h + (offset_y - 1)) / (offset_y);
/* optional */
/* NOTE: Shader could be null for GLSL OCIO drawing, it is fine, since
* it does not need color.
*/
if (state->shader != NULL && GPU_shader_get_uniform(state->shader, "color") != -1) {
immUniformColor4fv((color) ? color : white);
}
GPU_unpack_row_length_set(img_w);
for (subpart_y = 0; subpart_y < nsubparts_y; subpart_y++) {
for (subpart_x = 0; subpart_x < nsubparts_x; subpart_x++) {
int remainder_x = img_w - subpart_x * offset_x;
int remainder_y = img_h - subpart_y * offset_y;
int subpart_w = (remainder_x < tex_w) ? remainder_x : tex_w;
int subpart_h = (remainder_y < tex_h) ? remainder_y : tex_h;
int offset_left = (seamless && subpart_x != 0) ? 1 : 0;
int offset_bot = (seamless && subpart_y != 0) ? 1 : 0;
int offset_right = (seamless && remainder_x > tex_w) ? 1 : 0;
int offset_top = (seamless && remainder_y > tex_h) ? 1 : 0;
float rast_x = x + subpart_x * offset_x * xzoom;
float rast_y = y + subpart_y * offset_y * yzoom;
/* check if we already got these because we always get 2 more when doing seamless */
if (subpart_w <= seamless || subpart_h <= seamless) {
continue;
}
int right = subpart_w - offset_right;
int top = subpart_h - offset_top;
int bottom = 0 + offset_bot;
int left = 0 + offset_left;
if (use_clipping) {
if (rast_x + right * xzoom * scaleX < clip_min_x ||
rast_y + top * yzoom * scaleY < clip_min_y) {
continue;
}
if (rast_x + left * xzoom > clip_max_x || rast_y + bottom * yzoom > clip_max_y) {
continue;
}
}
{
int src_y = subpart_y * offset_y;
int src_x = subpart_x * offset_x;
#define DATA(_y, _x) ((char *)rect + stride * ((size_t)(_y)*img_w + (_x)))
{
void *data = DATA(src_y, src_x);
GPU_texture_update_sub(tex, gpu_data, data, 0, 0, 0, subpart_w, subpart_h, 0);
}
/* Add an extra border of pixels so linear interpolation looks ok
* at edges of full image. */
if (subpart_w < tex_w) {
void *data = DATA(src_y, src_x + subpart_w - 1);
const int offset[2] = {subpart_w, 0};
const int extent[2] = {1, subpart_h};
GPU_texture_update_sub(tex, gpu_data, data, UNPACK2(offset), 0, UNPACK2(extent), 0);
}
if (subpart_h < tex_h) {
void *data = DATA(src_y + subpart_h - 1, src_x);
const int offset[2] = {0, subpart_h};
const int extent[2] = {subpart_w, 1};
GPU_texture_update_sub(tex, gpu_data, data, UNPACK2(offset), 0, UNPACK2(extent), 0);
}
if (subpart_w < tex_w && subpart_h < tex_h) {
void *data = DATA(src_y + subpart_h - 1, src_x + subpart_w - 1);
const int offset[2] = {subpart_w, subpart_h};
const int extent[2] = {1, 1};
GPU_texture_update_sub(tex, gpu_data, data, UNPACK2(offset), 0, UNPACK2(extent), 0);
}
#undef DATA
}
uint pos = state->pos, texco = state->texco;
immBegin(GPU_PRIM_TRI_FAN, 4);
immAttr2f(texco, left / (float)tex_w, bottom / (float)tex_h);
immVertex2f(pos, rast_x + offset_left * xzoom, rast_y + offset_bot * yzoom);
immAttr2f(texco, right / (float)tex_w, bottom / (float)tex_h);
immVertex2f(pos, rast_x + right * xzoom * scaleX, rast_y + offset_bot * yzoom);
immAttr2f(texco, right / (float)tex_w, top / (float)tex_h);
immVertex2f(pos, rast_x + right * xzoom * scaleX, rast_y + top * yzoom * scaleY);
immAttr2f(texco, left / (float)tex_w, top / (float)tex_h);
immVertex2f(pos, rast_x + offset_left * xzoom, rast_y + top * yzoom * scaleY);
immEnd();
/* NOTE: Weirdly enough this is only required on macOS. Without this there is some sort of
* bleeding of data is happening from tiles which are drawn later on.
* This doesn't seem to be too slow,
* but still would be nice to have fast and nice solution. */
#ifdef __APPLE__
GPU_flush();
#endif
}
}
if (state->do_shader_unbind) {
immUnbindProgram();
}
GPU_texture_unbind(tex);
GPU_texture_free(tex);
/* Restore default. */
GPU_unpack_row_length_set(0);
}
void immDrawPixelsTexTiled_scaling(IMMDrawPixelsTexState *state,
float x,
float y,
int img_w,
int img_h,
eGPUTextureFormat gpu_format,
bool use_filter,
void *rect,
float scaleX,
float scaleY,
float xzoom,
float yzoom,
const float color[4])
{
immDrawPixelsTexTiled_scaling_clipping(state,
x,
y,
img_w,
img_h,
gpu_format,
use_filter,
rect,
scaleX,
scaleY,
0.0f,
0.0f,
0.0f,
0.0f,
xzoom,
yzoom,
color);
}
void immDrawPixelsTexTiled(IMMDrawPixelsTexState *state,
float x,
float y,
int img_w,
int img_h,
eGPUTextureFormat gpu_format,
bool use_filter,
void *rect,
float xzoom,
float yzoom,
const float color[4])
{
immDrawPixelsTexTiled_scaling_clipping(state,
x,
y,
img_w,
img_h,
gpu_format,
use_filter,
rect,
1.0f,
1.0f,
0.0f,
0.0f,
0.0f,
0.0f,
xzoom,
yzoom,
color);
}
void immDrawPixelsTexTiled_clipping(IMMDrawPixelsTexState *state,
float x,
float y,
int img_w,
int img_h,
eGPUTextureFormat gpu_format,
bool use_filter,
void *rect,
float clip_min_x,
float clip_min_y,
float clip_max_x,
float clip_max_y,
float xzoom,
float yzoom,
const float color[4])
{
immDrawPixelsTexTiled_scaling_clipping(state,
x,
y,
img_w,
img_h,
gpu_format,
use_filter,
rect,
1.0f,
1.0f,
clip_min_x,
clip_min_y,
clip_max_x,
clip_max_y,
xzoom,
yzoom,
color);
}
/* **** Color management helper functions for GLSL display/transform ***** */
void ED_draw_imbuf_clipping(ImBuf *ibuf,
float x,
float y,
bool use_filter,
ColorManagedViewSettings *view_settings,
ColorManagedDisplaySettings *display_settings,
float clip_min_x,
float clip_min_y,
float clip_max_x,
float clip_max_y,
float zoom_x,
float zoom_y)
{
bool force_fallback = false;
bool need_fallback = true;
/* Early out */
if (ibuf->rect == NULL && ibuf->rect_float == NULL) {
return;
}
/* Single channel images could not be transformed using GLSL yet */
force_fallback |= ibuf->channels == 1;
/* If user decided not to use GLSL, fallback to glaDrawPixelsAuto */
force_fallback |= (ED_draw_imbuf_method(ibuf) != IMAGE_DRAW_METHOD_GLSL);
/* Try to draw buffer using GLSL display transform */
if (force_fallback == false) {
int ok;
IMMDrawPixelsTexState state = {0};
/* We want GLSL state to be fully handled by OCIO. */
state.do_shader_unbind = false;
immDrawPixelsTexSetupAttributes(&state);
if (ibuf->rect_float) {
if (ibuf->float_colorspace) {
ok = IMB_colormanagement_setup_glsl_draw_from_space(
view_settings, display_settings, ibuf->float_colorspace, ibuf->dither, true, false);
}
else {
ok = IMB_colormanagement_setup_glsl_draw(
view_settings, display_settings, ibuf->dither, true);
}
}
else {
ok = IMB_colormanagement_setup_glsl_draw_from_space(
view_settings, display_settings, ibuf->rect_colorspace, ibuf->dither, false, false);
}
if (ok) {
if (ibuf->rect_float) {
eGPUTextureFormat format = 0;
if (ibuf->channels == 3) {
format = GPU_RGB16F;
}
else if (ibuf->channels == 4) {
format = GPU_RGBA16F;
}
else {
BLI_assert_msg(0, "Incompatible number of channels for GLSL display");
}
if (format != 0) {
immDrawPixelsTexTiled_clipping(&state,
x,
y,
ibuf->x,
ibuf->y,
format,
use_filter,
ibuf->rect_float,
clip_min_x,
clip_min_y,
clip_max_x,
clip_max_y,
zoom_x,
zoom_y,
NULL);
}
}
else if (ibuf->rect) {
/* ibuf->rect is always RGBA */
immDrawPixelsTexTiled_clipping(&state,
x,
y,
ibuf->x,
ibuf->y,
GPU_RGBA8,
use_filter,
ibuf->rect,
clip_min_x,
clip_min_y,
clip_max_x,
clip_max_y,
zoom_x,
zoom_y,
NULL);
}
IMB_colormanagement_finish_glsl_draw();
need_fallback = false;
}
}
/* In case GLSL failed or not usable, fallback to glaDrawPixelsAuto */
if (need_fallback) {
uchar *display_buffer;
void *cache_handle;
display_buffer = IMB_display_buffer_acquire(
ibuf, view_settings, display_settings, &cache_handle);
if (display_buffer) {
IMMDrawPixelsTexState state = immDrawPixelsTexSetup(GPU_SHADER_2D_IMAGE_COLOR);
immDrawPixelsTexTiled_clipping(&state,
x,
y,
ibuf->x,
ibuf->y,
GPU_RGBA8,
use_filter,
display_buffer,
clip_min_x,
clip_min_y,
clip_max_x,
clip_max_y,
zoom_x,
zoom_y,
NULL);
}
IMB_display_buffer_release(cache_handle);
}
}
void ED_draw_imbuf(ImBuf *ibuf,
float x,
float y,
bool use_filter,
ColorManagedViewSettings *view_settings,
ColorManagedDisplaySettings *display_settings,
float zoom_x,
float zoom_y)
{
ED_draw_imbuf_clipping(ibuf,
x,
y,
use_filter,
view_settings,
display_settings,
0.0f,
0.0f,
0.0f,
0.0f,
zoom_x,
zoom_y);
}
void ED_draw_imbuf_ctx_clipping(const bContext *C,
ImBuf *ibuf,
float x,
float y,
bool use_filter,
float clip_min_x,
float clip_min_y,
float clip_max_x,
float clip_max_y,
float zoom_x,
float zoom_y)
{
ColorManagedViewSettings *view_settings;
ColorManagedDisplaySettings *display_settings;
IMB_colormanagement_display_settings_from_ctx(C, &view_settings, &display_settings);
ED_draw_imbuf_clipping(ibuf,
x,
y,
use_filter,
view_settings,
display_settings,
clip_min_x,
clip_min_y,
clip_max_x,
clip_max_y,
zoom_x,
zoom_y);
}
void ED_draw_imbuf_ctx(
const bContext *C, ImBuf *ibuf, float x, float y, bool use_filter, float zoom_x, float zoom_y)
{
ED_draw_imbuf_ctx_clipping(C, ibuf, x, y, use_filter, 0.0f, 0.0f, 0.0f, 0.0f, zoom_x, zoom_y);
}
int ED_draw_imbuf_method(ImBuf *ibuf)
{
if (U.image_draw_method == IMAGE_DRAW_METHOD_AUTO) {
/* Use faster GLSL when CPU to GPU transfer is unlikely to be a bottleneck,
* otherwise do color management on CPU side. */
const size_t threshold = sizeof(float[4]) * 2048 * 2048;
const size_t data_size = (ibuf->rect_float) ? sizeof(float) : sizeof(uchar);
const size_t size = ibuf->x * ibuf->y * ibuf->channels * data_size;
return (size > threshold) ? IMAGE_DRAW_METHOD_2DTEXTURE : IMAGE_DRAW_METHOD_GLSL;
}
return U.image_draw_method;
}
void immDrawBorderCorners(uint pos, const rcti *border, float zoomx, float zoomy)
{
float delta_x = 4.0f * UI_DPI_FAC / zoomx;
float delta_y = 4.0f * UI_DPI_FAC / zoomy;
delta_x = min_ff(delta_x, border->xmax - border->xmin);
delta_y = min_ff(delta_y, border->ymax - border->ymin);
/* left bottom corner */
immBegin(GPU_PRIM_LINE_STRIP, 3);
immVertex2f(pos, border->xmin, border->ymin + delta_y);
immVertex2f(pos, border->xmin, border->ymin);
immVertex2f(pos, border->xmin + delta_x, border->ymin);
immEnd();
/* left top corner */
immBegin(GPU_PRIM_LINE_STRIP, 3);
immVertex2f(pos, border->xmin, border->ymax - delta_y);
immVertex2f(pos, border->xmin, border->ymax);
immVertex2f(pos, border->xmin + delta_x, border->ymax);
immEnd();
/* right bottom corner */
immBegin(GPU_PRIM_LINE_STRIP, 3);
immVertex2f(pos, border->xmax - delta_x, border->ymin);
immVertex2f(pos, border->xmax, border->ymin);
immVertex2f(pos, border->xmax, border->ymin + delta_y);
immEnd();
/* right top corner */
immBegin(GPU_PRIM_LINE_STRIP, 3);
immVertex2f(pos, border->xmax - delta_x, border->ymax);
immVertex2f(pos, border->xmax, border->ymax);
immVertex2f(pos, border->xmax, border->ymax - delta_y);
immEnd();
}
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