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More refactoring

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Get fullscreen mostly working in GLFW3
This commit is contained in:
Clownacy 2020-04-01 15:21:40 +01:00
parent c4aa8e28bb
commit 4d8be3bc36
3 changed files with 49 additions and 15 deletions
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33
src/Backends/Rendering/OpenGL3.cpp
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@ -98,6 +98,9 @@ static Backend_Surface *glyph_destination_surface;
static spritebatch_t glyph_batcher;
static int actual_screen_width;
static int actual_screen_height;
#ifdef USE_OPENGLES2
static const GLchar *vertex_shader_plain = " \
#version 100\n \
@ -515,7 +518,10 @@ static void GlyphBatch_DestroyTexture(SPRITEBATCH_U64 texture_id, void *udata)
Backend_Surface* Backend_Init(const char *window_title, int screen_width, int screen_height, BOOL fullscreen)
{
if (WindowBackend_OpenGL_CreateWindow(window_title, screen_width, screen_height, fullscreen))
actual_screen_width = screen_width;
actual_screen_height = screen_height;
if (WindowBackend_OpenGL_CreateWindow(window_title, &actual_screen_width, &actual_screen_height, fullscreen))
{
printf("GL_VENDOR = %s\n", glGetString(GL_VENDOR));
printf("GL_RENDERER = %s\n", glGetString(GL_RENDERER));
@ -656,7 +662,30 @@ void Backend_DrawScreen(void)
// Target actual screen, and not our framebuffer
glBindFramebuffer(GL_FRAMEBUFFER, 0);
glViewport(0, 0, framebuffer.width, framebuffer.height);
// Do some viewport trickery, to fit the framebuffer in the center of the screen
GLint x;
GLint y;
GLsizei width;
GLsizei height;
if (actual_screen_width > actual_screen_height)
{
y = 0;
height = actual_screen_height;
width = framebuffer.width * ((float)actual_screen_height / (float)framebuffer.height);
x = (actual_screen_width - width) / 2;
}
else
{
x = 0;
width = actual_screen_width;
height = framebuffer.height * ((float)actual_screen_width / (float)framebuffer.width);
y = (actual_screen_height - height) / 2;
}
glViewport(x, y, width, height);
// Draw framebuffer to screen
glBindTexture(GL_TEXTURE_2D, framebuffer.texture_id);

2
src/Backends/Window.h
View file

@ -2,6 +2,6 @@
#include "../WindowsWrapper.h"
BOOL WindowBackend_OpenGL_CreateWindow(const char *window_title, int screen_width, int screen_height, BOOL fullscreen);
BOOL WindowBackend_OpenGL_CreateWindow(const char *window_title, int *screen_width, int *screen_height, BOOL fullscreen);
void WindowBackend_OpenGL_DestroyWindow(void);
void WindowBackend_OpenGL_Display(void);

29
src/Backends/Window/GLFW3-OpenGL3.cpp
View file

@ -22,7 +22,7 @@ void KeyCallback(GLFWwindow *window, int key, int scancode, int action, int mods
void WindowFocusCallback(GLFWwindow *window, int focused);
void WindowSizeCallback(GLFWwindow *window, int width, int height);
BOOL WindowBackend_OpenGL_CreateWindow(const char *window_title, int screen_width, int screen_height, BOOL fullscreen)
BOOL WindowBackend_OpenGL_CreateWindow(const char *window_title, int *screen_width, int *screen_height, BOOL fullscreen)
{
#ifdef USE_OPENGLES2
glfwWindowHint(GLFW_CLIENT_API, GLFW_OPENGL_ES_API);
@ -36,7 +36,22 @@ BOOL WindowBackend_OpenGL_CreateWindow(const char *window_title, int screen_widt
glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 2);
#endif
window = glfwCreateWindow(screen_width, screen_height, window_title, NULL, NULL);
GLFWmonitor *monitor = NULL;
if (fullscreen)
{
monitor = glfwGetPrimaryMonitor();
if (monitor != NULL)
{
const GLFWvidmode *mode = glfwGetVideoMode(monitor);
*screen_width = mode->width;
*screen_height = mode->height;
}
}
window = glfwCreateWindow(*screen_width, *screen_height, window_title, monitor, NULL);
if (window != NULL)
{/*
@ -50,16 +65,6 @@ BOOL WindowBackend_OpenGL_CreateWindow(const char *window_title, int screen_widt
#endif
*/
if (fullscreen)
{
GLFWmonitor* monitor = glfwGetPrimaryMonitor();
if (monitor)
{
const GLFWvidmode* mode = glfwGetVideoMode(monitor);
glfwSetWindowMonitor(window, monitor, 0, 0, mode->width, mode->height, mode->refreshRate);
}
}
glfwMakeContextCurrent(window);
#ifndef USE_OPENGLES2