forked from KolibriOS/kolibrios
104 lines
2.6 KiB
C
104 lines
2.6 KiB
C
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
|
|
#include "render.h"
|
|
#include <kos32sys.h>
|
|
|
|
void render_swap_and_blit(struct render *render)
|
|
{
|
|
char proc_info[1024];
|
|
|
|
EGLContext context;
|
|
EGLSurface draw, read;
|
|
int winx, winy;
|
|
|
|
float dst_xscale, dst_yscale;
|
|
float *vertices = render->vertices;
|
|
float *texcoords = render->texcoords;
|
|
int r, b;
|
|
|
|
if(render == NULL)
|
|
return;
|
|
|
|
get_proc_info(proc_info);
|
|
|
|
winx = *(uint32_t*)(proc_info+34);
|
|
winy = *(uint32_t*)(proc_info+38);
|
|
|
|
context = eglGetCurrentContext();
|
|
draw = eglGetCurrentSurface(EGL_DRAW);
|
|
read = eglGetCurrentSurface(EGL_READ);
|
|
|
|
eglSwapBuffers(render->dpy,draw);
|
|
|
|
if (!eglMakeCurrent(render->dpy, EGL_NO_SURFACE, EGL_NO_SURFACE, render->context))
|
|
{
|
|
printf("failed to make window current");
|
|
goto err1;
|
|
};
|
|
|
|
#if 0
|
|
glUseProgram(render->blit_prog);
|
|
glUniform1i(render->sampler, 0);
|
|
|
|
glVertexAttribPointer(0, 2, GL_FLOAT,GL_FALSE, 2 * sizeof(float),render->vertices);
|
|
glEnableVertexAttribArray(0);
|
|
|
|
glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, 2 * sizeof(float),render->texcoords);
|
|
glEnableVertexAttribArray(1);
|
|
|
|
#endif
|
|
|
|
glActiveTexture(GL_TEXTURE0);
|
|
glBindTexture(GL_TEXTURE_2D, render->tx_buffers[render->back_buffer]);
|
|
glTexParameteri(GL_TEXTURE_2D,
|
|
GL_TEXTURE_MIN_FILTER,
|
|
GL_NEAREST);
|
|
glTexParameteri(GL_TEXTURE_2D,
|
|
GL_TEXTURE_MAG_FILTER,
|
|
GL_NEAREST);
|
|
|
|
dst_xscale = 1.0/render->scr_width;
|
|
dst_yscale = 1.0/render->scr_height;
|
|
|
|
r = winx + render->dx + render->width;
|
|
b = winy + render->dy + render->height;
|
|
|
|
float t0, t1, t2, t5;
|
|
|
|
vertices[0] = t0 = 2*(winx+render->dx)*dst_xscale - 1.0;
|
|
vertices[1 * 2] = t2 = 2*r*dst_xscale - 1.0;
|
|
|
|
vertices[2 * 2] = t2;
|
|
vertices[3 * 2] = t0;
|
|
|
|
vertices[1] = t1 = 2*(winy+render->dy)*dst_yscale - 1.0;
|
|
vertices[2*2+1] = t5 = 2*b*dst_yscale - 1.0;
|
|
vertices[1*2+1] = t1;
|
|
vertices[3*2+1] = t5;
|
|
|
|
texcoords[0] = 0.0;
|
|
texcoords[1] = 0.0;
|
|
texcoords[1*2] = 1.0;
|
|
texcoords[1*2+1]= 0.0;
|
|
texcoords[2*2] = 1.0;
|
|
texcoords[2*2+1]= 1.0;
|
|
texcoords[3*2] = 0.0;
|
|
texcoords[3*2+1]= 1.0;
|
|
|
|
glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
|
|
|
|
// glDisableVertexAttribArray(0);
|
|
// glDisableVertexAttribArray(1);
|
|
// glDisable(GL_TEXTURE_2D);
|
|
// glUseProgram(0);
|
|
|
|
render->back_buffer++;
|
|
render->back_buffer&=1;
|
|
|
|
err1:
|
|
eglMakeCurrent(render->dpy, draw, read, context);
|
|
}
|
|
|