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use OpenGL legacy API for X11 (faster than draw XImages)

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This commit is contained in:
Carlos Aragones 2020-09-18 15:05:39 +02:00
parent 09338014d1
commit 41e087433a
6 changed files with 192 additions and 39 deletions
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13
CMakeLists.txt
View File

@ -106,6 +106,9 @@ if(APPLE AND NOT IOS)
option(USE_METAL_API "Build the project using metal API code" ON)
elseif(UNIX)
option(USE_WAYLAND_API "Build the project using wayland API code" OFF)
if(NOT USE_WAYLAND_API)
option(USE_OPENGL_API "Build the project using OpenGL API code" ON)
endif()
elseif(WIN32)
option(USE_OPENGL_API "Build the project using OpenGL API code" ON)
endif()
@ -174,6 +177,11 @@ elseif(UNIX)
if(USE_WAYLAND_API)
list(APPEND SrcLib ${SrcWayland})
else()
if(USE_OPENGL_API)
list(APPEND SrcLib ${SrcGL})
add_definitions(-DUSE_OPENGL_API)
endif()
list(APPEND SrcLib ${SrcX11})
endif()
@ -216,6 +224,11 @@ elseif(UNIX)
target_link_libraries(minifb
"-lX11"
)
if(USE_OPENGL_API)
target_link_libraries(minifb
"-lGL"
)
endif()
endif()
elseif(WIN32)

161
src/gl/MiniFB_GL.c
View File

@ -3,8 +3,13 @@
#include "MiniFB_GL.h"
#if defined(_WIN32) || defined(WIN32)
#include <windows/WindowData_Win.h>
#endif
#include <gl/gl.h>
#elif defined(linux)
#include <x11/WindowData_X11.h>
#include <GL/gl.h>
#include <GL/glx.h>
#endif
#include <stdio.h>
#include <stdlib.h>
//#define kUse_Clean_UP
@ -15,22 +20,8 @@
#endif
//-------------------------------------
void setup_pixel_format(HDC hDC);
//-------------------------------------
void
create_GL_context(SWindowData *window_data) {
SWindowData_Win *window_data_win;
window_data_win = (SWindowData_Win *) window_data->specific;
setup_pixel_format(window_data_win->hdc);
window_data_win->hGLRC = wglCreateContext(window_data_win->hdc);
wglMakeCurrent(window_data_win->hdc, window_data_win->hGLRC);
init_GL(window_data);
}
//-------------------------------------
void
#if defined(_WIN32) || defined(WIN32)
bool
setup_pixel_format(HDC hDC) {
int pixelFormat;
@ -58,23 +49,122 @@ setup_pixel_format(HDC hDC) {
pixelFormat = ChoosePixelFormat(hDC, &pfd);
if (pixelFormat == 0) {
MessageBox(WindowFromDC(hDC), "ChoosePixelFormat failed.", "Error", MB_ICONERROR | MB_OK);
exit(1);
return false;
}
if (SetPixelFormat(hDC, pixelFormat, &pfd) != TRUE) {
MessageBox(WindowFromDC(hDC), "SetPixelFormat failed.", "Error", MB_ICONERROR | MB_OK);
exit(1);
}
return false;
}
#define TEXTURE0 0x84C0
return true;
}
#endif
//-------------------------------------
bool
create_GL_context(SWindowData *window_data) {
#if defined(_WIN32) || defined(WIN32)
SWindowData_Win *window_data_win = (SWindowData_Win *) window_data->specific;
if(setup_pixel_format(window_data_win->hdc) == false)
return false;
window_data_win->hGLRC = wglCreateContext(window_data_win->hdc);
wglMakeCurrent(window_data_win->hdc, window_data_win->hGLRC);
init_GL(window_data);
return true;
#elif defined(linux)
SWindowData_X11 *window_data_x11 = (SWindowData_X11 *) window_data->specific;
GLint majorGLX, minorGLX = 0;
glXQueryVersion(window_data_x11->display, &majorGLX, &minorGLX);
if (majorGLX <= 1 && minorGLX < 2) {
fprintf(stderr, "GLX 1.2 or greater is required.\n");
XCloseDisplay(window_data_x11->display);
return false;
}
else {
//fprintf(stdout, "GLX version: %d.%d\n", majorGLX, minorGLX);
}
GLint glxAttribs[] = {
GLX_RGBA,
GLX_DOUBLEBUFFER,
GLX_DEPTH_SIZE, 24,
GLX_STENCIL_SIZE, 8,
GLX_RED_SIZE, 8,
GLX_GREEN_SIZE, 8,
GLX_BLUE_SIZE, 8,
GLX_DEPTH_SIZE, 24,
GLX_STENCIL_SIZE, 8,
GLX_SAMPLE_BUFFERS, 0,
GLX_SAMPLES, 0,
None
};
XVisualInfo* visualInfo = glXChooseVisual(window_data_x11->display, window_data_x11->screen, glxAttribs);
if (visualInfo == 0) {
fprintf(stderr, "Could not create correct visual window.\n");
XCloseDisplay(window_data_x11->display);
return false;
}
window_data_x11->context = glXCreateContext(window_data_x11->display, visualInfo, NULL, GL_TRUE);
glXMakeCurrent(window_data_x11->display, window_data_x11->window, window_data_x11->context);
//fprintf(stdout, "GL Vendor: %s\n", glGetString(GL_VENDOR));
//fprintf(stdout, "GL Renderer: %s\n", glGetString(GL_RENDERER));
//fprintf(stdout, "GL Version: %s\n", glGetString(GL_VERSION));
//fprintf(stdout, "GL Shading Language: %s\n", glGetString(GL_SHADING_LANGUAGE_VERSION));
init_GL(window_data);
return true;
#endif
}
//-------------------------------------
void
destroy_GL_context(SWindowData *window_data) {
#if defined(_WIN32) || defined(WIN32)
SWindowData_Win *window_data_win = (SWindowData_Win *) window_data->specific;
if (window_data_win->hGLRC) {
wglMakeCurrent(NULL, NULL);
wglDeleteContext(window_data_win->hGLRC);
window_data_win->hGLRC = 0;
}
#elif defined(linux)
SWindowData_X11 *window_data_x11 = (SWindowData_X11 *) window_data->specific;
glXDestroyContext(window_data_x11->display, window_data_x11->context);
#endif
}
//-------------------------------------
#define TEXTURE0 0x84C0 // [ Core in gl 1.3, gles1 1.0, gles2 2.0, glsc2 2.0, Provided by GL_ARB_multitexture (gl) ]
#define RGB 0x1907 // [ Core in gl 1.0, gles1 1.0, gles2 2.0, glsc2 2.0 ]
#define RGBA 0x1908 // [ Core in gl 1.0, gles1 1.0, gles2 2.0, glsc2 2.0 ]
#define BGR 0x80E0 // [ Core in gl 1.2 ]
#define BGRA 0x80E1 // [ Core in gl 1.2, Provided by GL_ARB_vertex_array_bgra (gl|glcore) ]
//-------------------------------------
void
init_GL(SWindowData *window_data) {
SWindowData_Win *window_data_win;
#if defined(_WIN32) || defined(WIN32)
SWindowData_Win *window_data_ex = (SWindowData_Win *) window_data->specific;
#elif defined(linux)
SWindowData_X11 *window_data_ex = (SWindowData_X11 *) window_data->specific;
#endif
window_data_win = (SWindowData_Win *) window_data->specific;
glViewport(0, 0, window_data->window_width, window_data->window_height);
@ -90,9 +180,9 @@ init_GL(SWindowData *window_data) {
glEnable(GL_TEXTURE_2D);
glGenTextures(1, &window_data_win->text_id);
glGenTextures(1, &window_data_ex->text_id);
//glActiveTexture(TEXTURE0);
glBindTexture(GL_TEXTURE_2D, window_data_win->text_id);
glBindTexture(GL_TEXTURE_2D, window_data_ex->text_id);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
@ -123,10 +213,19 @@ resize_GL(SWindowData *window_data) {
//-------------------------------------
void
redraw_GL(SWindowData *window_data, const void *pixels) {
float x, y, w, h;
SWindowData_Win *window_data_ex;
#if defined(_WIN32) || defined(WIN32)
window_data_ex = (SWindowData_Win *) window_data->specific;
SWindowData_Win *window_data_ex = (SWindowData_Win *) window_data->specific;
GLenum format = GL_RGBA;
#elif defined(linux)
SWindowData_X11 *window_data_ex = (SWindowData_X11 *) window_data->specific;
GLenum format = GL_BGRA; // for some reason the colors are inverted on X11
#endif
float x, y, w, h;
x = (float) window_data->dst_offset_x;
y = (float) window_data->dst_offset_y;
@ -150,7 +249,7 @@ redraw_GL(SWindowData *window_data, const void *pixels) {
glClear(GL_COLOR_BUFFER_BIT);
UseCleanUp(glBindTexture(GL_TEXTURE_2D, window_data_ex->text_id));
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, window_data->buffer_width, window_data->buffer_height, 0, GL_RGBA, GL_UNSIGNED_BYTE, pixels);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, window_data->buffer_width, window_data->buffer_height, 0, format, GL_UNSIGNED_BYTE, pixels);
//glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, window_data->buffer_width, window_data->buffer_height, GL_RGBA, GL_UNSIGNED_BYTE, pixels);
UseCleanUp(glEnableClientState(GL_VERTEX_ARRAY));
@ -164,7 +263,11 @@ redraw_GL(SWindowData *window_data, const void *pixels) {
UseCleanUp(glDisableClientState(GL_VERTEX_ARRAY));
UseCleanUp(glBindTexture(GL_TEXTURE_2D, 0));
#if defined(_WIN32) || defined(WIN32)
SwapBuffers(window_data_ex->hdc);
#elif defined(linux)
glXSwapBuffers(window_data_ex->display, window_data_ex->window);
#endif
}
#endif

4
src/gl/MiniFB_GL.h
View File

@ -3,8 +3,10 @@
#if defined(USE_OPENGL_API)
#include "WindowData.h"
#include <stdbool.h>
void create_GL_context(SWindowData *window_data);
bool create_GL_context(SWindowData *window_data);
void destroy_GL_context(SWindowData *window_data);
void init_GL(SWindowData *window_data);
void redraw_GL(SWindowData *window_data, const void *pixels);
void resize_GL(SWindowData *window_data);

6
src/windows/WinMiniFB.c
View File

@ -508,11 +508,7 @@ destroy_window_data(SWindowData *window_data) {
window_data_win->bitmapInfo = 0x0;
}
#else
if (window_data_win->hGLRC) {
wglMakeCurrent(NULL, NULL);
wglDeleteContext(window_data_win->hGLRC);
window_data_win->hGLRC = 0;
}
destroy_GL_context(window_data);
#endif
if (window_data_win->window != 0 && window_data_win->hdc != 0) {

10
src/x11/WindowData_X11.h
View File

@ -3,7 +3,9 @@
#include <MiniFB_enums.h>
#include <stdint.h>
#include <X11/Xlib.h>
#if defined(USE_OPENGL_API)
#include <GL/glx.h>
#endif
typedef struct {
Window window;
@ -11,12 +13,16 @@ typedef struct {
Display *display;
int screen;
GC gc;
#if defined(USE_OPENGL_API)
GLXContext context;
uint32_t text_id;
#else
XImage *image;
void *image_buffer;
XImage *image_scaler;
uint32_t image_scaler_width;
uint32_t image_scaler_height;
#endif
struct mfb_timer *timer;
} SWindowData_X11;

39
src/x11/X11MiniFB.c
View File

@ -13,6 +13,10 @@
#include "WindowData.h"
#include "WindowData_X11.h"
#if defined(USE_OPENGL_API)
#include <gl/MiniFB_GL.h>
#endif
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
void init_keycodes(SWindowData_X11 *window_data_x11);
@ -176,6 +180,15 @@ mfb_open_ex(const char *title, unsigned width, unsigned height, unsigned flags)
sizeHints.max_height = height;
}
#if defined(USE_OPENGL_API)
if(create_GL_context(window_data) == false) {
return 0x0;
}
#else
window_data_x11->image = XCreateImage(window_data_x11->display, CopyFromParent, depth, ZPixmap, 0, 0x0, width, height, 32, width * 4);
#endif
XSetWMNormalHints(window_data_x11->display, window_data_x11->window, &sizeHints);
XClearWindow(window_data_x11->display, window_data_x11->window);
XMapRaised(window_data_x11->display, window_data_x11->window);
@ -183,8 +196,6 @@ mfb_open_ex(const char *title, unsigned width, unsigned height, unsigned flags)
window_data_x11->gc = DefaultGC(window_data_x11->display, window_data_x11->screen);
window_data_x11->image = XCreateImage(window_data_x11->display, CopyFromParent, depth, ZPixmap, 0, 0x0, width, height, 32, width * 4);
window_data_x11->timer = mfb_timer_create();
mfb_set_keyboard_callback((struct mfb_window *) window_data, keyboard_default);
@ -264,6 +275,9 @@ processEvent(SWindowData *window_data, XEvent *event) {
window_data->window_height = event->xconfigure.height;
resize_dst(window_data, event->xconfigure.width, event->xconfigure.height);
#if defined(USE_OPENGL_API)
resize_GL(window_data);
#else
SWindowData_X11 *window_data_x11 = (SWindowData_X11 *) window_data->specific;
if(window_data_x11->image_scaler != 0x0) {
window_data_x11->image_scaler->data = 0x0;
@ -272,8 +286,8 @@ processEvent(SWindowData *window_data, XEvent *event) {
window_data_x11->image_scaler_width = 0;
window_data_x11->image_scaler_height = 0;
}
XClearWindow(window_data_x11->display, window_data_x11->window);
#endif
kCall(resize_func, window_data->window_width, window_data->window_height);
}
break;
@ -330,16 +344,22 @@ mfb_update_ex(struct mfb_window *window, void *buffer, unsigned width, unsigned
return STATE_INVALID_BUFFER;
}
#if !defined(USE_OPENGL_API)
SWindowData_X11 *window_data_x11 = (SWindowData_X11 *) window_data->specific;
bool different_size = false;
#endif
if(window_data->buffer_width != width || window_data->buffer_height != height) {
window_data->buffer_width = width;
window_data->buffer_stride = width * 4;
window_data->buffer_height = height;
#if !defined(USE_OPENGL_API)
different_size = true;
#endif
}
#if !defined(USE_OPENGL_API)
if (different_size || window_data->buffer_width != window_data->dst_width || window_data->buffer_height != window_data->dst_height) {
if (window_data_x11->image_scaler_width != window_data->dst_width || window_data_x11->image_scaler_height != window_data->dst_height) {
if (window_data_x11->image_scaler != 0x0) {
@ -372,6 +392,13 @@ mfb_update_ex(struct mfb_window *window, void *buffer, unsigned width, unsigned
XPutImage(window_data_x11->display, window_data_x11->window, window_data_x11->gc, window_data_x11->image, 0, 0, window_data->dst_offset_x, window_data->dst_offset_y, window_data->dst_width, window_data->dst_height);
}
XFlush(window_data_x11->display);
#else
redraw_GL(window_data, buffer);
#endif
processEvents(window_data);
return STATE_OK;
@ -453,12 +480,18 @@ destroy_window_data(SWindowData *window_data) {
if (window_data != 0x0) {
if (window_data->specific != 0x0) {
SWindowData_X11 *window_data_x11 = (SWindowData_X11 *) window_data->specific;
#if defined(USE_OPENGL_API)
destroy_GL_context(window_data);
#else
if (window_data_x11->image != 0x0) {
window_data_x11->image->data = 0x0;
XDestroyImage(window_data_x11->image);
XDestroyWindow(window_data_x11->display, window_data_x11->window);
XCloseDisplay(window_data_x11->display);
}
#endif
mfb_timer_destroy(window_data_x11->timer);
memset(window_data_x11, 0, sizeof(SWindowData_X11));
free(window_data_x11);