gl-render: knocking on frame buffer object
git-svn-id: svn://kolibrios.org@4472 a494cfbc-eb01-0410-851d-a64ba20cac60
This commit is contained in:
Sergey Semyonov (Serge)
parent
c5b31b6cb2
commit
cfb22e3303
@ -3,12 +3,14 @@
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#include <string.h>
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#include <math.h>
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#define EGL_EGLEXT_PROTOTYPES
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#include <GL/gl.h>
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#include <GL/glu.h>
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#ifndef GLAPIENTRY
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#define GLAPIENTRY
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#endif
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#include "EGL/egl.h"
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#include "EGL/eglext.h"
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#include "GL/gl.h"
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#include "gbm.h"
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#include <kos32sys.h>
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#include "eglut.h"
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@ -48,7 +50,7 @@ idle(void)
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static void reshape(int width, int height)
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{
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asm volatile ("int3");
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/*
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glViewport(0, 0, (GLint)width, (GLint)height);
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@ -58,10 +60,11 @@ static void reshape(int width, int height)
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glMatrixMode(GL_MODELVIEW);
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glLoadIdentity();
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*/
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glViewport(0, 0, (GLint) width, (GLint) height);
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GLfloat h = (GLfloat) height / (GLfloat) width;
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glViewport(0, 0, (GLint) width, (GLint) height);
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glMatrixMode(GL_PROJECTION);
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glLoadIdentity();
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glFrustum(-1.0, 1.0, -h, h, 5.0, 60.0);
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@ -102,12 +105,13 @@ main(int argc, char *argv[])
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eglutReshapeFunc(reshape);
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eglutDisplayFunc(draw);
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glClearColor( 0, 0, 0, 1.0);
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glClearColor( 0, 0, 0, 1);
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init();
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// init();
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glDrawBuffer(GL_BACK);
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eglutMainLoop();
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return 0;
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}
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@ -4,13 +4,19 @@
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#include <sys/time.h>
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#define EGL_EGLEXT_PROTOTYPES
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#define GL_GLEXT_PROTOTYPES
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#include "EGL/egl.h"
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#include "EGL/eglext.h"
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#include "GL/gl.h"
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#include "gbm.h"
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#include <i915_drm.h>
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#include <kos32sys.h>
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#include <pixlib2.h>
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static EGLImageKHR px_create_image(EGLDisplay display, EGLContext context,
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int width, int height, int stride, int name, int depth);
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int main()
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{
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struct gbm_device *gbm;
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@ -21,11 +27,13 @@ int main()
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EGLContext context;
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EGLSurface surface;
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EGLImageKHR fb_image;
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EGLConfig config;
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EGLint config_attribs[32];
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EGLint num_configs, i;
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GLint list;
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GLuint *texture;
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int fd;
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@ -36,6 +44,8 @@ int main()
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return 1;
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};
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init_pixlib(HW_BIT_BLIT);
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dpy = eglGetDisplay((EGLNativeDisplayType)gbm);
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if (!eglInitialize(dpy, &major, &minor))
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@ -78,6 +88,8 @@ int main()
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DrawWindow(20, 20, 400+9, 300+24, "gl-render", 0x000000, 0x74);
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EndDraw();
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sna_create_mask();
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surface = eglCreateWindowSurface(dpy,config, (EGLNativeWindowType)gs, NULL);
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if (surface == EGL_NO_SURFACE)
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printf("failed to create surface");
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@ -85,6 +97,40 @@ int main()
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if (!eglMakeCurrent(dpy, surface, surface, context))
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printf("failed to make window current");
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if(fd)
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{
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int ret;
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struct drm_i915_fb_info fb;
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struct drm_gem_open open_arg;
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memset(&fb, 0, sizeof(fb));
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ret = drmIoctl(fd, SRV_FBINFO, &fb);
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if( ret != 0 )
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printf("failed to get framebuffer info\n");
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memset(&open_arg,0,sizeof(open_arg));
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open_arg.name = fb.name;
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ret = drmIoctl(fd,DRM_IOCTL_GEM_OPEN,&open_arg);
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if (ret != 0) {
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printf("Couldn't reference framebuffer handle 0x%08x\n", fb.name);
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}
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asm volatile ("int3");
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fb_image = px_create_image(dpy,context,fb.width,fb.height,
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fb.pitch,open_arg.handle,32);
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glGenTextures(1, texture);
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glBindTexture(GL_TEXTURE_2D, *texture);
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glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_NEAREST);
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glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_NEAREST);
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glEGLImageTargetTexture2DOES(GL_TEXTURE_2D,fb_image);
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glBindTexture(GL_TEXTURE_2D, 0);
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}
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glClearColor( 0, 0, 0, 1);
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list = glGenLists(1);
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@ -117,19 +163,18 @@ int main()
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glEndList();
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asm volatile ("int3");
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glDrawBuffer(GL_BACK);
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glViewport(0, 0, (GLint)400, (GLint)300);
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glMatrixMode(GL_PROJECTION);
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glLoadIdentity();
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glOrtho(-1.0, 1.0, -1.0, 1.0, -0.5, 1000.0);
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glOrtho(-1.0, 1.0, -1.0, 1.0, -0.5, 100.0);
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glMatrixMode(GL_MODELVIEW);
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asm volatile ("int3");
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// glClear(GL_COLOR_BUFFER_BIT);
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glClear(GL_COLOR_BUFFER_BIT);
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glShadeModel( GL_SMOOTH );
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@ -141,7 +186,6 @@ int main()
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glCallList(list);
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glFlush();
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asm volatile ("int3");
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eglSwapBuffers(dpy, surface);
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@ -156,5 +200,48 @@ int main()
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{
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delay(1);
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}
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return 0;
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}
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int drmIoctl(int fd, unsigned long request, void *arg)
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{
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ioctl_t io;
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io.handle = fd;
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io.io_code = request;
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io.input = arg;
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io.inp_size = 64;
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io.output = NULL;
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io.out_size = 0;
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return call_service(&io);
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}
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static EGLImageKHR px_create_image(EGLDisplay display, EGLContext context,
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int width, int height, int stride, int name, int depth)
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{
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EGLImageKHR image;
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EGLint attribs[] = {
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EGL_WIDTH, 0,
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EGL_HEIGHT, 0,
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EGL_DRM_BUFFER_STRIDE_MESA, 0,
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EGL_DRM_BUFFER_FORMAT_MESA,
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EGL_DRM_BUFFER_FORMAT_ARGB32_MESA,
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EGL_DRM_BUFFER_USE_MESA,
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EGL_DRM_BUFFER_USE_SHARE_MESA |
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EGL_DRM_BUFFER_USE_SCANOUT_MESA,
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EGL_NONE
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};
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attribs[1] = width;
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attribs[3] = height;
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attribs[5] = stride;
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if (depth != 32 && depth != 24)
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return EGL_NO_IMAGE_KHR;
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image = eglCreateImageKHR(display, context, EGL_DRM_BUFFER_MESA,
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(void *) (uintptr_t)name, attribs);
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if (image == EGL_NO_IMAGE_KHR)
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return EGL_NO_IMAGE_KHR;
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return image;
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}
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