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Initial PCem OpenGL 3.x renderer port

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This commit is contained in:
Cacodemon345
2025-03-08 02:13:14 +06:00
parent 02df55185f
commit 86343327be
17 changed files with 2442 additions and 16 deletions
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3
src/qt/CMakeLists.txt
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@@ -89,6 +89,9 @@ add_library(ui STATIC
qt_hardwarerenderer.hpp
qt_openglrenderer.cpp
qt_openglrenderer.hpp
qt_openglrenderer_pcem.cpp
qt_openglrenderer_pcem.hpp
qt_glsl_parser.cpp
qt_opengloptions.cpp
qt_opengloptions.hpp
qt_opengloptionsdialog.cpp

5
src/qt/qt.c
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@@ -54,6 +54,8 @@ plat_vidapi(const char *api)
return 4;
} else if (!strcasecmp(api, "vnc")) {
return 5;
} else if (!strcasecmp(api, "qt_opengl3_pcem")) {
return 6;
}
return 0;
@@ -83,6 +85,9 @@ plat_vidapi_name(int api)
case 5:
name = "vnc";
break;
case 6:
name = "qt_opengl3_pcem";
break;
default:
fatal("Unknown renderer: %i\n", api);
break;

308
src/qt/qt_glsl_parser.cpp Normal file
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@@ -0,0 +1,308 @@
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <ctype.h>
#include <stdint.h>
extern "C"
{
#include <86box/86box.h>
#include <86box/ini.h>
#include <86box/qt-glslp-parser.h>
#include <86box/path.h>
}
#define safe_strncpy(a, b, n) \
do { \
strncpy((a), (b), (n)-1); \
(a)[(n)-1] = 0; \
} while (0)
static int endswith(const char *str, const char *ext) {
int i;
const char *p;
int elen = strlen(ext);
int slen = strlen(str);
if (slen >= elen) {
p = &str[slen - elen];
for (i = 0; i < elen; ++i) {
if (tolower(p[i]) != tolower(ext[i]))
return 0;
}
return 1;
}
return 0;
}
static char *load_file(const char *fn) {
FILE *f = fopen(fn, "rb");
if (!f)
return 0;
fseek(f, 0, SEEK_END);
long fsize = ftell(f);
fseek(f, 0, SEEK_SET);
char *data = (char*)malloc(fsize + 1);
fread(data, fsize, 1, f);
fclose(f);
data[fsize] = 0;
return data;
}
static void strip_lines(const char *program, const char *starts_with) {
/* strip parameters */
char *ptr = strstr(program, starts_with);
while (ptr) {
while (*ptr != '\n' && *ptr != '\0')
*ptr++ = ' ';
ptr = strstr(program, starts_with);
}
}
static void strip_parameters(const char *program) {
/* strip parameters */
strip_lines(program, "#pragma parameter");
}
static void strip_defines(const char *program) {
/* strip texture define */
strip_lines(program, "#define texture");
}
static int has_parameter(glslp_t *glsl, char *id) {
int i;
for (i = 0; i < glsl->num_parameters; ++i)
if (!strcmp(glsl->parameters[i].id, id))
return 1;
return 0;
}
static int get_parameters(glslp_t *glsl) {
int i;
struct parameter p;
for (i = 0; i < glsl->num_shaders; ++i) {
struct shader *shader = &glsl->shaders[i];
FILE *f = fopen(shader->shader_fn, "rb");
if (!f)
return 0;
char line[1024];
while (fgets(line, sizeof(line) - 1, f) && glsl->num_parameters < MAX_PARAMETERS) {
int num = sscanf(line, "#pragma parameter %63s \"%63[^\"]\" %f %f %f %f", p.id, p.description,
&p.default_value, &p.min, &p.max, &p.step);
if (num < 5)
continue;
p.id[63] = 0;
p.description[63] = 0;
if (num == 5)
p.step = 0.1f * (p.max - p.min);
p.value = p.default_value;
if (!has_parameter(glsl, p.id)) {
memcpy(&glsl->parameters[glsl->num_parameters++], &p, sizeof(struct parameter));
pclog("Read parameter: %s (%s) %f, %f -> %f (%f)\n", p.id, p.description, p.default_value, p.min,
p.max, p.step);
}
}
fclose(f);
}
return 1;
}
static struct parameter *get_parameter(glslp_t *glslp, const char *id) {
int i;
for (i = 0; i < glslp->num_parameters; ++i) {
if (!strcmp(glslp->parameters[i].id, id)) {
return &glslp->parameters[i];
}
}
return 0;
}
static glslp_t *glsl_parse(const char *f) {
glslp_t *glslp = (glslp_t*)malloc(sizeof(glslp_t));
memset(glslp, 0, sizeof(glslp_t));
glslp->num_shaders = 1;
struct shader *shader = &glslp->shaders[0];
strcpy(shader->shader_fn, f);
shader->shader_program = load_file(f);
if (!shader->shader_program) {
//wx_simple_messagebox("GLSL error", "Could not load shader %s\n", shader->shader_fn);
glslp_free(glslp);
return 0;
}
strip_parameters(shader->shader_program);
strip_defines(shader->shader_program);
shader->scale_x = shader->scale_y = 1.0f;
strcpy(shader->scale_type_x, "source");
strcpy(shader->scale_type_y, "source");
get_parameters(glslp);
return glslp;
}
extern "C" {
void get_glslp_name(const char *f, char *s, int size) { safe_strncpy(s, path_get_filename((char *)f), size); }
glslp_t *glslp_parse(const char *f) {
int i, j, len, sublen;
char s[513], t[513], z[540];
memset(s, 0, sizeof(s));
if (endswith(f, ".glsl"))
return glsl_parse(f);
void *cfg = wx_config_load(f);
if (!cfg) {
fprintf(stderr, "GLSLP Error: Could not load GLSLP-file %s\n", f);
return 0;
}
glslp_t *glslp = (glslp_t*)malloc(sizeof(glslp_t));
memset(glslp, 0, sizeof(glslp_t));
get_glslp_name(f, glslp->name, sizeof(glslp->name));
wx_config_get_int(cfg, "shaders", &glslp->num_shaders, 0);
wx_config_get_bool(cfg, "filter_linear0", &glslp->input_filter_linear, -1);
for (i = 0; i < glslp->num_shaders; ++i) {
struct shader *shader = &glslp->shaders[i];
snprintf(s, sizeof(s) - 1, "shader%d", i);
if (!wx_config_get_string(cfg, s, t, sizeof(t), 0)) {
/* shader doesn't exist, lets break here */
glslp->num_shaders = i;
break;
}
strcpy(s, f);
*path_get_filename(s) = 0;
snprintf(shader->shader_fn, sizeof(shader->shader_fn) - 1, "%s%s", s, t);
shader->shader_program = load_file(shader->shader_fn);
if (!shader->shader_program) {
fprintf(stderr, "GLSLP Error: Could not load shader %s\n", shader->shader_fn);
glslp_free(glslp);
return 0;
}
strip_parameters(shader->shader_program);
strip_defines(shader->shader_program);
snprintf(s, sizeof(s) - 1, "alias%d", i);
wx_config_get_string(cfg, s, shader->alias, sizeof(shader->alias), 0);
snprintf(s, sizeof(s) - 1, "filter_linear%d", i + 1);
wx_config_get_bool(cfg, s, &shader->filter_linear, 0);
snprintf(s, sizeof(s) - 1, "wrap_mode%d", i);
wx_config_get_string(cfg, s, shader->wrap_mode, sizeof(shader->wrap_mode), 0);
snprintf(s, sizeof(s) - 1, "float_framebuffer%d", i);
wx_config_get_bool(cfg, s, &shader->float_framebuffer, 0);
snprintf(s, sizeof(s) - 1, "srgb_framebuffer%d", i);
wx_config_get_bool(cfg, s, &shader->srgb_framebuffer, 0);
snprintf(s, sizeof(s) - 1, "mipmap_input%d", i);
wx_config_get_bool(cfg, s, &shader->mipmap_input, 0);
strcpy(shader->scale_type_x, "source");
snprintf(s, sizeof(s) - 1, "scale_type_x%d", i);
wx_config_get_string(cfg, s, shader->scale_type_x, sizeof(shader->scale_type_x), 0);
strcpy(shader->scale_type_y, "source");
snprintf(s, sizeof(s) - 1, "scale_type_y%d", i);
wx_config_get_string(cfg, s, shader->scale_type_y, sizeof(shader->scale_type_y), 0);
snprintf(s, sizeof(s) - 1, "scale_type%d", i);
if (wx_config_has_entry(cfg, s)) {
wx_config_get_string(cfg, s, shader->scale_type_x, sizeof(shader->scale_type_x), 0);
wx_config_get_string(cfg, s, shader->scale_type_y, sizeof(shader->scale_type_y), 0);
}
snprintf(s, sizeof(s) - 1, "scale_x%d", i);
wx_config_get_float(cfg, s, &shader->scale_x, 1.0f);
snprintf(s, sizeof(s) - 1, "scale_y%d", i);
wx_config_get_float(cfg, s, &shader->scale_y, 1.0f);
snprintf(s, sizeof(s) - 1, "scale%d", i);
if (wx_config_has_entry(cfg, s)) {
wx_config_get_float(cfg, s, &shader->scale_x, 1.0f);
wx_config_get_float(cfg, s, &shader->scale_y, 1.0f);
}
snprintf(s, sizeof(s) - 1, "frame_count_mod%d", i);
wx_config_get_int(cfg, s, &shader->frame_count_mod, 0);
}
/* textures */
glslp->num_textures = 0;
wx_config_get_string(cfg, "textures", t, sizeof(t), 0);
len = strlen(t);
j = 0;
sublen = 0;
for (i = 0; i < len; ++i) {
if (t[i] == ';' || i == len - 1) {
sublen = (i - j) + ((i == len - 1) ? 1 : 0) + 1;
safe_strncpy(s, t + j, sublen);
s[511 < sublen ? 511 : sublen] = 0;
struct texture *tex = &glslp->textures[glslp->num_textures++];
strcpy(tex->name, s);
wx_config_get_string(cfg, s, tex->path, sizeof(tex->path), 0);
snprintf(z, sizeof(z) - 1, "%s_linear", s);
wx_config_get_bool(cfg, z, &tex->linear, 0);
snprintf(z, sizeof(z) - 1, "%s_mipmap", s);
wx_config_get_bool(cfg, z, &tex->mipmap, 0);
snprintf(z, sizeof(z) - 1, "%s_wrap_mode", s);
wx_config_get_string(cfg, z, tex->wrap_mode, sizeof(tex->wrap_mode), 0);
j = i + 1;
}
}
/* parameters */
get_parameters(glslp);
wx_config_get_string(cfg, "parameters", t, sizeof(t), 0);
len = strlen(t);
j = 0;
sublen = 0;
for (i = 0; i < len; ++i) {
if (t[i] == ';' || i == len - 1) {
sublen = (i - j) + ((i == len - 1) ? 1 : 0) + 1;
safe_strncpy(s, t + j, sublen);
s[511 < sublen ? 511 : sublen] = 0;
struct parameter *p = get_parameter(glslp, s);
if (p)
wx_config_get_float(cfg, s, &p->default_value, 0);
j = i + 1;
}
}
wx_config_free(cfg);
return glslp;
}
void glslp_free(glslp_t *p) {
int i;
for (i = 0; i < p->num_shaders; ++i)
if (p->shaders[i].shader_program)
free(p->shaders[i].shader_program);
free(p);
}
}

1
src/qt/qt_main.cpp
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@@ -389,6 +389,7 @@ main_thread_fn()
// title_update = 1;
uint64_t old_time = elapsed_timer.elapsed();
int drawits = frames = 0;
is_cpu_thread = 1;
while (!is_quit && cpu_thread_run) {
/* See if it is time to run a frame of code. */
const uint64_t new_time = elapsed_timer.elapsed();

3
src/qt/qt_mainwindow.cpp
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@@ -452,6 +452,9 @@ MainWindow::MainWindow(QWidget *parent)
endblit();
}
#endif
case 6:
newVidApi = RendererStack::Renderer::OpenGL3PCem;
break;
}
ui->stackedWidget->switchRenderer(newVidApi);
if (!show_second_monitors)

1679
src/qt/qt_openglrenderer_pcem.cpp Normal file
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File diff suppressed because it is too large Load Diff

127
src/qt/qt_openglrenderer_pcem.hpp Normal file
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@@ -0,0 +1,127 @@
/*
* 86Box A hypervisor and IBM PC system emulator that specializes in
* running old operating systems and software designed for IBM
* PC systems and compatibles from 1981 through fairly recent
* system designs based on the PCI bus.
*
* This file is part of the 86Box distribution.
*
* Header file for OpenGL renderer
*
*
*
* Authors: Teemu Korhonen
*
* Copyright 2022 Teemu Korhonen
*/
#ifndef QT_OpenGLRendererPCem_HPP
#define QT_OpenGLRendererPCem_HPP
#if defined Q_OS_MACOS || __arm__
# define NO_BUFFER_STORAGE
#endif
#include <QOpenGLContext>
#include <QOpenGLExtraFunctions>
#include <QResizeEvent>
#include <QTimer>
#include <QWidget>
#include <QWindow>
#if !defined NO_BUFFER_STORAGE && !(QT_VERSION >= QT_VERSION_CHECK(6, 0, 0))
# include <QtOpenGLExtensions/QOpenGLExtensions>
#endif
#include <atomic>
#include <stdexcept>
#include <tuple>
#include <vector>
#include "qt_opengloptions.hpp"
#include "qt_renderercommon.hpp"
typedef void(QOPENGLF_APIENTRYP PFNGLBUFFERSTORAGEEXTPROC_LOCAL)(GLenum target, GLsizeiptr size, const void *data, GLbitfield flags);
class OpenGLRendererPCem : public QWindow, public RendererCommon {
Q_OBJECT
public:
QOpenGLContext *context;
OpenGLRendererPCem(QWidget *parent = nullptr);
~OpenGLRendererPCem();
std::vector<std::tuple<uint8_t *, std::atomic_flag *>> getBuffers() override;
void finalize() override final;
//bool hasOptions() const override { return true; }
//QDialog *getOptions(QWidget *parent) override;
//void reloadOptions() override;
signals:
void initialized();
void errorInitializing();
public slots:
void onBlit(int buf_idx, int x, int y, int w, int h);
protected:
void exposeEvent(QExposeEvent *event) override;
void resizeEvent(QResizeEvent *event) override;
bool event(QEvent *event) override;
private:
static constexpr int INIT_WIDTH = 640;
static constexpr int INIT_HEIGHT = 400;
static constexpr int ROW_LENGTH = 2048;
static constexpr int BUFFERPIXELS = 4194304;
static constexpr int BUFFERBYTES = 16777216; /* Pixel is 4 bytes. */
static constexpr int BUFFERCOUNT = 3; /* How many buffers to use for pixel transfer (2-3 is commonly recommended). */
std::array<std::unique_ptr<uint8_t>, 2> imagebufs;
QTimer *renderTimer;
OpenGLOptions *options;
QString glslVersion;
bool isInitialized = false;
bool isFinalized = false;
GLuint unpackBufferID = 0;
GLuint vertexArrayID = 0;
GLuint vertexBufferID = 0;
GLuint textureID = 0;
int frameCounter = 0;
OpenGLOptions::FilterType currentFilter;
void *unpackBuffer = nullptr;
void initialize();
void initializeExtensions();
void initializeBuffers();
void applyOptions();
void applyShader(const OpenGLShaderPass &shader);
bool notReady() const { return !isInitialized || isFinalized; }
/* GL_ARB_buffer_storage */
bool hasBufferStorage = false;
#ifndef NO_BUFFER_STORAGE
PFNGLBUFFERSTORAGEEXTPROC_LOCAL glBufferStorage = nullptr;
#endif
private slots:
void render();
//void updateOptions(OpenGLOptions *newOptions);
};
class opengl_init_error_pcem : public std::runtime_error {
public:
opengl_init_error_pcem(const QString &what)
: std::runtime_error(what.toStdString())
{
}
};
#endif

33
src/qt/qt_rendererstack.cpp
View File

@@ -23,6 +23,7 @@
#include "qt_hardwarerenderer.hpp"
#include "qt_openglrenderer.hpp"
#include "qt_openglrenderer_pcem.hpp"
#include "qt_softwarerenderer.hpp"
#include "qt_vulkanwindowrenderer.hpp"
@@ -337,19 +338,39 @@ RendererStack::createRenderer(Renderer renderer)
current.reset(this->createWindowContainer(hw, this));
break;
}
case Renderer::OpenGL3:
case Renderer::OpenGL3PCem:
{
this->createWinId();
auto hw = new OpenGLRenderer(this);
auto hw = new OpenGLRendererPCem(this);
rendererWindow = hw;
connect(this, &RendererStack::blitToRenderer, hw, &OpenGLRenderer::onBlit, Qt::QueuedConnection);
connect(hw, &OpenGLRenderer::initialized, [=]() {
connect(this, &RendererStack::blitToRenderer, hw, &OpenGLRendererPCem::onBlit, Qt::QueuedConnection);
connect(hw, &OpenGLRendererPCem::initialized, [=]() {
/* Buffers are available only after initialization. */
imagebufs = rendererWindow->getBuffers();
endblit();
emit rendererChanged();
});
connect(hw, &OpenGLRenderer::errorInitializing, [=]() {
connect(hw, &OpenGLRendererPCem::errorInitializing, [=]() {
/* Renderer not could initialize, fallback to software. */
imagebufs = {};
QTimer::singleShot(0, this, [this]() { switchRenderer(Renderer::Software); });
});
current.reset(this->createWindowContainer(hw, this));
break;
}
case Renderer::OpenGL3:
{
this->createWinId();
auto hw = new OpenGLRendererPCem(this);
rendererWindow = hw;
connect(this, &RendererStack::blitToRenderer, hw, &OpenGLRendererPCem::onBlit, Qt::QueuedConnection);
connect(hw, &OpenGLRendererPCem::initialized, [=]() {
/* Buffers are available only after initialization. */
imagebufs = rendererWindow->getBuffers();
endblit();
emit rendererChanged();
});
connect(hw, &OpenGLRendererPCem::errorInitializing, [=]() {
/* Renderer not could initialize, fallback to software. */
imagebufs = {};
QTimer::singleShot(0, this, [this]() { switchRenderer(Renderer::Software); });
@@ -406,7 +427,7 @@ RendererStack::createRenderer(Renderer renderer)
currentBuf = 0;
if (renderer != Renderer::OpenGL3 && renderer != Renderer::Vulkan) {
if (renderer != Renderer::OpenGL3 && renderer != Renderer::Vulkan && renderer != Renderer::OpenGL3PCem) {
imagebufs = rendererWindow->getBuffers();
endblit();
emit rendererChanged();

1
src/qt/qt_rendererstack.hpp
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@@ -59,6 +59,7 @@ public:
OpenGLES,
OpenGL3,
Vulkan,
OpenGL3PCem = 6,
None = -1
};
void switchRenderer(Renderer renderer);