mirror of
https://gitea.sffempire.ru/Kolyah35/minecraft-pe-0.6.1.git
synced 2026-03-19 22:43:32 +00:00
81 lines
3.2 KiB
C++
Executable File
81 lines
3.2 KiB
C++
Executable File
#include "AppPlatform_glfw.h"
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#ifdef WIN32
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#include <Windows.h>
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#endif
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// Loader that tries GLFW first, then falls back to opengl32.dll for any
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// function that glfwGetProcAddress can't resolve.
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void* winGLLoader(const char* name) {
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void* p = (void*)glfwGetProcAddress(name);
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#ifdef WIN32
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if (!p) {
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static HMODULE opengl32 = LoadLibraryA("opengl32.dll");
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if (opengl32) p = (void*)GetProcAddress(opengl32, name);
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}
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#endif
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return p;
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}
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// -----------------------------------------------------------------------
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// Compatibility wrappers for OpenGL ES functions absent from desktop GL.
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// The desktop equivalents use double parameters and are not declared in
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// the GLES1 GLAD header, so look them up at runtime via winGLLoader.
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// -----------------------------------------------------------------------
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static void APIENTRY compat_glDepthRangef(GLfloat n, GLfloat f) {
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typedef void(APIENTRY *fn_t)(double, double);
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static fn_t fn = (fn_t)winGLLoader("glDepthRange");
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if (fn) fn((double)n, (double)f);
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}
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static void APIENTRY compat_glClearDepthf(GLfloat d) {
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typedef void(APIENTRY *fn_t)(double);
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static fn_t fn = (fn_t)winGLLoader("glClearDepth");
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if (fn) fn((double)d);
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}
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static void APIENTRY compat_glOrthof(GLfloat l, GLfloat r, GLfloat b,
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GLfloat t, GLfloat n, GLfloat f) {
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typedef void(APIENTRY *fn_t)(double,double,double,double,double,double);
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static fn_t fn = (fn_t)winGLLoader("glOrtho");
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if (fn) fn(l, r, b, t, n, f);
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}
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static void APIENTRY compat_glFrustumf(GLfloat l, GLfloat r, GLfloat b,
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GLfloat t, GLfloat n, GLfloat f) {
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typedef void(APIENTRY *fn_t)(double,double,double,double,double,double);
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static fn_t fn = (fn_t)winGLLoader("glFrustum");
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if (fn) fn(l, r, b, t, n, f);
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}
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// glFogx / glFogxv are OpenGL ES fixed-point variants that don't exist in
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// desktop opengl32.dll. Wrap them via the float equivalents. For fog-mode
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// enum params the GLfixed value IS the enum integer, so the cast is exact.
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static void APIENTRY compat_glFogx(GLenum pname, GLfixed param) {
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glFogf(pname, (GLfloat)param);
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}
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static void APIENTRY compat_glFogxv(GLenum pname, const GLfixed* params) {
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// Only GL_FOG_COLOR uses an array; convert each element.
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GLfloat fp[4] = {
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(GLfloat)params[0], (GLfloat)params[1],
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(GLfloat)params[2], (GLfloat)params[3]
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};
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glFogfv(pname, fp);
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}
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void glPatchDesktopCompat() {
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if (!glad_glDepthRangef) glad_glDepthRangef = compat_glDepthRangef;
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if (!glad_glClearDepthf) glad_glClearDepthf = compat_glClearDepthf;
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if (!glad_glOrthof) glad_glOrthof = compat_glOrthof;
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if (!glad_glFrustumf) glad_glFrustumf = compat_glFrustumf;
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if (!glad_glFogx) glad_glFogx = compat_glFogx;
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if (!glad_glFogxv) glad_glFogxv = compat_glFogxv;
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}
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float AppPlatform_glfw::getPixelsPerMillimeter() {
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GLFWmonitor* monitor = glfwGetPrimaryMonitor();
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int width_mm, height_mm;
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glfwGetMonitorPhysicalSize(monitor, &width_mm, &height_mm);
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const GLFWvidmode* mode = glfwGetVideoMode(monitor);
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return (float)mode->width / (float)width_mm;
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} |