testgl2.c
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/*
Copyright (C) 1997-2016 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely.
*/
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <math.h>
#include "SDL_test_common.h"
#ifdef __MACOS__
#define HAVE_OPENGL
#endif
#ifdef HAVE_OPENGL
#include "SDL_opengl.h"
typedef struct GL_Context
{
#define SDL_PROC(ret,func,params) ret (APIENTRY *func) params;
#include "../src/render/opengl/SDL_glfuncs.h"
#undef SDL_PROC
} GL_Context;
/* Undefine this if you want a flat cube instead of a rainbow cube */
#define SHADED_CUBE
static SDLTest_CommonState *state;
static SDL_GLContext context;
static GL_Context ctx;
static int LoadContext(GL_Context * data)
{
#if SDL_VIDEO_DRIVER_UIKIT
#define __SDL_NOGETPROCADDR__
#elif SDL_VIDEO_DRIVER_ANDROID
#define __SDL_NOGETPROCADDR__
#elif SDL_VIDEO_DRIVER_PANDORA
#define __SDL_NOGETPROCADDR__
#endif
#if defined __SDL_NOGETPROCADDR__
#define SDL_PROC(ret,func,params) data->func=func;
#else
#define SDL_PROC(ret,func,params) \
do { \
data->func = SDL_GL_GetProcAddress(#func); \
if ( ! data->func ) { \
return SDL_SetError("Couldn't load GL function %s: %s\n", #func, SDL_GetError()); \
} \
} while ( 0 );
#endif /* __SDL_NOGETPROCADDR__ */
#include "../src/render/opengl/SDL_glfuncs.h"
#undef SDL_PROC
return 0;
}
/* Call this instead of exit(), so we can clean up SDL: atexit() is evil. */
static void
quit(int rc)
{
if (context) {
/* SDL_GL_MakeCurrent(0, NULL); *//* doesn't do anything */
SDL_GL_DeleteContext(context);
}
SDLTest_CommonQuit(state);
exit(rc);
}
static void
Render()
{
static float color[8][3] = {
{1.0, 1.0, 0.0},
{1.0, 0.0, 0.0},
{0.0, 0.0, 0.0},
{0.0, 1.0, 0.0},
{0.0, 1.0, 1.0},
{1.0, 1.0, 1.0},
{1.0, 0.0, 1.0},
{0.0, 0.0, 1.0}
};
static float cube[8][3] = {
{0.5, 0.5, -0.5},
{0.5, -0.5, -0.5},
{-0.5, -0.5, -0.5},
{-0.5, 0.5, -0.5},
{-0.5, 0.5, 0.5},
{0.5, 0.5, 0.5},
{0.5, -0.5, 0.5},
{-0.5, -0.5, 0.5}
};
/* Do our drawing, too. */
ctx.glClearColor(0.0, 0.0, 0.0, 1.0);
ctx.glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
ctx.glBegin(GL_QUADS);
#ifdef SHADED_CUBE
ctx.glColor3fv(color[0]);
ctx.glVertex3fv(cube[0]);
ctx.glColor3fv(color[1]);
ctx.glVertex3fv(cube[1]);
ctx.glColor3fv(color[2]);
ctx.glVertex3fv(cube[2]);
ctx.glColor3fv(color[3]);
ctx.glVertex3fv(cube[3]);
ctx.glColor3fv(color[3]);
ctx.glVertex3fv(cube[3]);
ctx.glColor3fv(color[4]);
ctx.glVertex3fv(cube[4]);
ctx.glColor3fv(color[7]);
ctx.glVertex3fv(cube[7]);
ctx.glColor3fv(color[2]);
ctx.glVertex3fv(cube[2]);
ctx.glColor3fv(color[0]);
ctx.glVertex3fv(cube[0]);
ctx.glColor3fv(color[5]);
ctx.glVertex3fv(cube[5]);
ctx.glColor3fv(color[6]);
ctx.glVertex3fv(cube[6]);
ctx.glColor3fv(color[1]);
ctx.glVertex3fv(cube[1]);
ctx.glColor3fv(color[5]);
ctx.glVertex3fv(cube[5]);
ctx.glColor3fv(color[4]);
ctx.glVertex3fv(cube[4]);
ctx.glColor3fv(color[7]);
ctx.glVertex3fv(cube[7]);
ctx.glColor3fv(color[6]);
ctx.glVertex3fv(cube[6]);
ctx.glColor3fv(color[5]);
ctx.glVertex3fv(cube[5]);
ctx.glColor3fv(color[0]);
ctx.glVertex3fv(cube[0]);
ctx.glColor3fv(color[3]);
ctx.glVertex3fv(cube[3]);
ctx.glColor3fv(color[4]);
ctx.glVertex3fv(cube[4]);
ctx.glColor3fv(color[6]);
ctx.glVertex3fv(cube[6]);
ctx.glColor3fv(color[1]);
ctx.glVertex3fv(cube[1]);
ctx.glColor3fv(color[2]);
ctx.glVertex3fv(cube[2]);
ctx.glColor3fv(color[7]);
ctx.glVertex3fv(cube[7]);
#else /* flat cube */
ctx.glColor3f(1.0, 0.0, 0.0);
ctx.glVertex3fv(cube[0]);
ctx.glVertex3fv(cube[1]);
ctx.glVertex3fv(cube[2]);
ctx.glVertex3fv(cube[3]);
ctx.glColor3f(0.0, 1.0, 0.0);
ctx.glVertex3fv(cube[3]);
ctx.glVertex3fv(cube[4]);
ctx.glVertex3fv(cube[7]);
ctx.glVertex3fv(cube[2]);
ctx.glColor3f(0.0, 0.0, 1.0);
ctx.glVertex3fv(cube[0]);
ctx.glVertex3fv(cube[5]);
ctx.glVertex3fv(cube[6]);
ctx.glVertex3fv(cube[1]);
ctx.glColor3f(0.0, 1.0, 1.0);
ctx.glVertex3fv(cube[5]);
ctx.glVertex3fv(cube[4]);
ctx.glVertex3fv(cube[7]);
ctx.glVertex3fv(cube[6]);
ctx.glColor3f(1.0, 1.0, 0.0);
ctx.glVertex3fv(cube[5]);
ctx.glVertex3fv(cube[0]);
ctx.glVertex3fv(cube[3]);
ctx.glVertex3fv(cube[4]);
ctx.glColor3f(1.0, 0.0, 1.0);
ctx.glVertex3fv(cube[6]);
ctx.glVertex3fv(cube[1]);
ctx.glVertex3fv(cube[2]);
ctx.glVertex3fv(cube[7]);
#endif /* SHADED_CUBE */
ctx.glEnd();
ctx.glMatrixMode(GL_MODELVIEW);
ctx.glRotatef(5.0, 1.0, 1.0, 1.0);
}
int
main(int argc, char *argv[])
{
int fsaa, accel;
int value;
int i, done;
SDL_DisplayMode mode;
SDL_Event event;
Uint32 then, now, frames;
int status;
int dw, dh;
/* Enable standard application logging */
SDL_LogSetPriority(SDL_LOG_CATEGORY_APPLICATION, SDL_LOG_PRIORITY_INFO);
/* Initialize parameters */
fsaa = 0;
accel = -1;
/* Initialize test framework */
state = SDLTest_CommonCreateState(argv, SDL_INIT_VIDEO);
if (!state) {
return 1;
}
for (i = 1; i < argc;) {
int consumed;
consumed = SDLTest_CommonArg(state, i);
if (consumed == 0) {
if (SDL_strcasecmp(argv[i], "--fsaa") == 0 && i+1 < argc) {
fsaa = atoi(argv[i+1]);
consumed = 2;
} else if (SDL_strcasecmp(argv[i], "--accel") == 0 && i+1 < argc) {
accel = atoi(argv[i+1]);
consumed = 2;
} else {
consumed = -1;
}
}
if (consumed < 0) {
SDL_Log("Usage: %s %s [--fsaa n] [--accel n]\n", argv[0],
SDLTest_CommonUsage(state));
quit(1);
}
i += consumed;
}
/* Set OpenGL parameters */
state->window_flags |= SDL_WINDOW_OPENGL;
state->gl_red_size = 5;
state->gl_green_size = 5;
state->gl_blue_size = 5;
state->gl_depth_size = 16;
state->gl_double_buffer = 1;
if (fsaa) {
state->gl_multisamplebuffers = 1;
state->gl_multisamplesamples = fsaa;
}
if (accel >= 0) {
state->gl_accelerated = accel;
}
if (!SDLTest_CommonInit(state)) {
quit(2);
}
/* Create OpenGL context */
context = SDL_GL_CreateContext(state->windows[0]);
if (!context) {
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "SDL_GL_CreateContext(): %s\n", SDL_GetError());
quit(2);
}
/* Important: call this *after* creating the context */
if (LoadContext(&ctx) < 0) {
SDL_Log("Could not load GL functions\n");
quit(2);
return 0;
}
if (state->render_flags & SDL_RENDERER_PRESENTVSYNC) {
/* try late-swap-tearing first. If not supported, try normal vsync. */
if (SDL_GL_SetSwapInterval(-1) == -1) {
SDL_GL_SetSwapInterval(1);
}
} else {
SDL_GL_SetSwapInterval(0); /* disable vsync. */
}
SDL_GetCurrentDisplayMode(0, &mode);
SDL_Log("Screen BPP : %d\n", SDL_BITSPERPIXEL(mode.format));
SDL_Log("Swap Interval : %d\n", SDL_GL_GetSwapInterval());
SDL_GetWindowSize(state->windows[0], &dw, &dh);
SDL_Log("Window Size : %d,%d\n", dw, dh);
SDL_GL_GetDrawableSize(state->windows[0], &dw, &dh);
SDL_Log("Draw Size : %d,%d\n", dw, dh);
SDL_Log("\n");
SDL_Log("Vendor : %s\n", ctx.glGetString(GL_VENDOR));
SDL_Log("Renderer : %s\n", ctx.glGetString(GL_RENDERER));
SDL_Log("Version : %s\n", ctx.glGetString(GL_VERSION));
SDL_Log("Extensions : %s\n", ctx.glGetString(GL_EXTENSIONS));
SDL_Log("\n");
status = SDL_GL_GetAttribute(SDL_GL_RED_SIZE, &value);
if (!status) {
SDL_Log("SDL_GL_RED_SIZE: requested %d, got %d\n", 5, value);
} else {
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Failed to get SDL_GL_RED_SIZE: %s\n", SDL_GetError());
}
status = SDL_GL_GetAttribute(SDL_GL_GREEN_SIZE, &value);
if (!status) {
SDL_Log("SDL_GL_GREEN_SIZE: requested %d, got %d\n", 5, value);
} else {
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Failed to get SDL_GL_GREEN_SIZE: %s\n", SDL_GetError());
}
status = SDL_GL_GetAttribute(SDL_GL_BLUE_SIZE, &value);
if (!status) {
SDL_Log("SDL_GL_BLUE_SIZE: requested %d, got %d\n", 5, value);
} else {
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Failed to get SDL_GL_BLUE_SIZE: %s\n", SDL_GetError());
}
status = SDL_GL_GetAttribute(SDL_GL_DEPTH_SIZE, &value);
if (!status) {
SDL_Log("SDL_GL_DEPTH_SIZE: requested %d, got %d\n", 16, value);
} else {
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Failed to get SDL_GL_DEPTH_SIZE: %s\n", SDL_GetError());
}
if (fsaa) {
status = SDL_GL_GetAttribute(SDL_GL_MULTISAMPLEBUFFERS, &value);
if (!status) {
SDL_Log("SDL_GL_MULTISAMPLEBUFFERS: requested 1, got %d\n", value);
} else {
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Failed to get SDL_GL_MULTISAMPLEBUFFERS: %s\n",
SDL_GetError());
}
status = SDL_GL_GetAttribute(SDL_GL_MULTISAMPLESAMPLES, &value);
if (!status) {
SDL_Log("SDL_GL_MULTISAMPLESAMPLES: requested %d, got %d\n", fsaa,
value);
} else {
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Failed to get SDL_GL_MULTISAMPLESAMPLES: %s\n",
SDL_GetError());
}
}
if (accel >= 0) {
status = SDL_GL_GetAttribute(SDL_GL_ACCELERATED_VISUAL, &value);
if (!status) {
SDL_Log("SDL_GL_ACCELERATED_VISUAL: requested %d, got %d\n", accel,
value);
} else {
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Failed to get SDL_GL_ACCELERATED_VISUAL: %s\n",
SDL_GetError());
}
}
/* Set rendering settings */
ctx.glMatrixMode(GL_PROJECTION);
ctx.glLoadIdentity();
ctx.glOrtho(-2.0, 2.0, -2.0, 2.0, -20.0, 20.0);
ctx.glMatrixMode(GL_MODELVIEW);
ctx.glLoadIdentity();
ctx.glEnable(GL_DEPTH_TEST);
ctx.glDepthFunc(GL_LESS);
ctx.glShadeModel(GL_SMOOTH);
/* Main render loop */
frames = 0;
then = SDL_GetTicks();
done = 0;
while (!done) {
/* Check for events */
++frames;
while (SDL_PollEvent(&event)) {
SDLTest_CommonEvent(state, &event, &done);
}
for (i = 0; i < state->num_windows; ++i) {
int w, h;
if (state->windows[i] == NULL)
continue;
SDL_GL_MakeCurrent(state->windows[i], context);
SDL_GL_GetDrawableSize(state->windows[i], &w, &h);
ctx.glViewport(0, 0, w, h);
Render();
SDL_GL_SwapWindow(state->windows[i]);
}
}
/* Print out some timing information */
now = SDL_GetTicks();
if (now > then) {
SDL_Log("%2.2f frames per second\n",
((double) frames * 1000) / (now - then));
}
quit(0);
return 0;
}
#else /* HAVE_OPENGL */
int
main(int argc, char *argv[])
{
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "No OpenGL support on this system\n");
return 1;
}
#endif /* HAVE_OPENGL */
SDL_PollEvent
#define SDL_PollEvent
Definition: SDL_dynapi_overrides.h:128
SDL_GetError
#define SDL_GetError
Definition: SDL_dynapi_overrides.h:119
SDLTest_CommonState::gl_accelerated
int gl_accelerated
Definition: SDL_test_common.h:108
Uint32
uint32_t Uint32
An unsigned 32-bit integer type.
Definition: SDL_stdinc.h:157
SDL_GL_CreateContext
#define SDL_GL_CreateContext
Definition: SDL_dynapi_overrides.h:563
GL_VENDOR
#define GL_VENDOR
Definition: SDL_opengl.h:706
GL_PROJECTION
#define GL_PROJECTION
Definition: SDL_opengl.h:265
SDLTest_CommonCreateState
SDLTest_CommonState * SDLTest_CommonCreateState(char **argv, Uint32 flags)
Parse command line parameters and create common state.
Definition: SDL_test_common.c:36
SDL_RENDERER_PRESENTVSYNC
Definition: SDL_render.h:69
state
struct xkb_state * state
Definition: SDL_waylandsym.h:97
SDLTest_CommonArg
int SDLTest_CommonArg(SDLTest_CommonState *state, int index)
Process one common argument.
Definition: SDL_test_common.c:83
data
GLint GLenum GLsizei GLsizei GLsizei GLint GLsizei const GLvoid * data
Definition: SDL_opengl.h:1967
SDL_DisplayMode
The structure that defines a display mode.
Definition: SDL_video.h:53
GL_DEPTH_BUFFER_BIT
#define GL_DEPTH_BUFFER_BIT
Definition: SDL_opengl.h:729
SDL_GL_ACCELERATED_VISUAL
Definition: SDL_video.h:186
GL_EXTENSIONS
#define GL_EXTENSIONS
Definition: SDL_opengl.h:709
GL_VERSION
#define GL_VERSION
Definition: SDL_opengl.h:708
SDL_GL_RED_SIZE
Definition: SDL_video.h:171
SDL_strcasecmp
#define SDL_strcasecmp
Definition: SDL_dynapi_overrides.h:425
SDL_test_common.h
SDLTest_CommonInit
SDL_bool SDLTest_CommonInit(SDLTest_CommonState *state)
Open test window.
Definition: SDL_test_common.c:645
SDLTest_CommonState::gl_double_buffer
int gl_double_buffer
Definition: SDL_test_common.h:99
SDLTest_CommonState::windows
SDL_Window ** windows
Definition: SDL_test_common.h:78
SDL_LogError
#define SDL_LogError
Definition: SDL_dynapi_overrides.h:42
SDL_opengl.h
SDLTest_CommonState::num_windows
int num_windows
Definition: SDL_test_common.h:77
SDL_GetWindowSize
#define SDL_GetWindowSize
Definition: SDL_dynapi_overrides.h:531
SDLTest_CommonState::window_flags
Uint32 window_flags
Definition: SDL_test_common.h:63
SDL_Log
#define SDL_Log
Definition: SDL_dynapi_overrides.h:37
SDL_GL_GetDrawableSize
#define SDL_GL_GetDrawableSize
Definition: SDL_dynapi_overrides.h:567
SDL_GLContext
void * SDL_GLContext
An opaque handle to an OpenGL context.
Definition: SDL_video.h:164
SDL_GL_GetSwapInterval
#define SDL_GL_GetSwapInterval
Definition: SDL_dynapi_overrides.h:569
SDLTest_CommonEvent
void SDLTest_CommonEvent(SDLTest_CommonState *state, SDL_Event *event, int *done)
Common event handler for test windows.
Definition: SDL_test_common.c:1295
SDLTest_CommonState::gl_multisamplebuffers
int gl_multisamplebuffers
Definition: SDL_test_common.h:105
SDL_GetTicks
Uint32 SDL_GetTicks(void)
Get the number of milliseconds since the SDL library initialization.
SDLTest_CommonState::gl_depth_size
int gl_depth_size
Definition: SDL_test_common.h:97
value
GLsizei const GLfloat * value
Definition: SDL_opengl_glext.h:698
SDL_GL_MULTISAMPLEBUFFERS
Definition: SDL_video.h:184
quit
void quit(int rc)
Definition: teststreaming.c:64
event
struct _cl_event * event
Definition: SDL_opengl_glext.h:2649
SDL_GL_SetSwapInterval
#define SDL_GL_SetSwapInterval
Definition: SDL_dynapi_overrides.h:568
done
int done
Definition: checkkeys.c:28
mode
GLenum mode
Definition: SDL_opengl_glext.h:1122
SDLTest_CommonState::gl_multisamplesamples
int gl_multisamplesamples
Definition: SDL_test_common.h:106
GL_LESS
#define GL_LESS
Definition: SDL_opengl.h:313
SDL_LOG_PRIORITY_INFO
Definition: SDL_log.h:106
main
int main(int argc, char *argv[])
Definition: testgl2.c:410
SDLTest_CommonUsage
const char * SDLTest_CommonUsage(SDLTest_CommonState *state)
Returns common usage information.
Definition: SDL_test_common.c:451
GL_COLOR_BUFFER_BIT
#define GL_COLOR_BUFFER_BIT
Definition: SDL_opengl.h:735
SDL_GL_DEPTH_SIZE
Definition: SDL_video.h:177
SDLTest_CommonState
Definition: SDL_test_common.h:51
SDLTest_CommonState::gl_green_size
int gl_green_size
Definition: SDL_test_common.h:93
i
return Display return Display Bool Bool int int int return Display XEvent Bool(*) XPointer return Display return Display Drawable _Xconst char unsigned int unsigned int return Display Pixmap Pixmap XColor XColor unsigned int unsigned int return Display _Xconst char char int char return Display Visual unsigned int int int char unsigned int unsigned int in i)
Definition: SDL_x11sym.h:42
SDL_LogSetPriority
#define SDL_LogSetPriority
Definition: SDL_dynapi_overrides.h:242
NULL
#define NULL
Definition: begin_code.h:143
GL_MODELVIEW
#define GL_MODELVIEW
Definition: SDL_opengl.h:264
GL_RENDERER
#define GL_RENDERER
Definition: SDL_opengl.h:707
SDLTest_CommonState::gl_blue_size
int gl_blue_size
Definition: SDL_test_common.h:94
SDL_GL_MakeCurrent
#define SDL_GL_MakeCurrent
Definition: SDL_dynapi_overrides.h:564
color
GLuint color
Definition: SDL_opengl_glext.h:1148
SDL_GL_MULTISAMPLESAMPLES
Definition: SDL_video.h:185
SDL_Event
General event structure.
Definition: SDL_events.h:521
GL_DEPTH_TEST
#define GL_DEPTH_TEST
Definition: SDL_opengl.h:320
SDL_WINDOW_OPENGL
Definition: SDL_video.h:99
SDL_GL_GetAttribute
#define SDL_GL_GetAttribute
Definition: SDL_dynapi_overrides.h:562
w
GLubyte GLubyte GLubyte GLubyte w
Definition: SDL_opengl_glext.h:731
GL_SMOOTH
#define GL_SMOOTH
Definition: SDL_opengl.h:358
SDL_DisplayMode::format
Uint32 format
Definition: SDL_video.h:55
SDL_GL_DeleteContext
#define SDL_GL_DeleteContext
Definition: SDL_dynapi_overrides.h:571
SDLTest_CommonState::gl_red_size
int gl_red_size
Definition: SDL_test_common.h:92
SDL_GL_GREEN_SIZE
Definition: SDL_video.h:172
SDL_GetCurrentDisplayMode
#define SDL_GetCurrentDisplayMode
Definition: SDL_dynapi_overrides.h:512
SDL_GL_BLUE_SIZE
Definition: SDL_video.h:173
SDL_LOG_CATEGORY_APPLICATION
Definition: SDL_log.h:66
SDL_BITSPERPIXEL
#define SDL_BITSPERPIXEL(X)
Definition: SDL_pixels.h:126
SDL_GL_SwapWindow
#define SDL_GL_SwapWindow
Definition: SDL_dynapi_overrides.h:570
SDLTest_CommonQuit
void SDLTest_CommonQuit(SDLTest_CommonState *state)
Close test window.
Definition: SDL_test_common.c:1560
h
GLfloat GLfloat GLfloat GLfloat h
Definition: SDL_opengl_glext.h:1946
SDL_INIT_VIDEO
#define SDL_INIT_VIDEO
Definition: SDL.h:77
GL_QUADS
#define GL_QUADS
Definition: SDL_opengl.h:216
SDLTest_CommonState::render_flags
Uint32 render_flags
Definition: SDL_test_common.h:82