| 0,0 → 1,100 |
|---|
| #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; |
| }; |
| |
| glUseProgram(render->blit_prog); |
| glUniform1i(render->sampler, 0); |
| |
| glVertexAttribPointer(0, 2, GL_FLOAT,GL_FALSE, 2 * sizeof(float),render->vertices); |
| glEnableVertexAttribArray(0); |
| |
| 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); |
| |
| glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, 2 * sizeof(float),render->texcoords); |
| glEnableVertexAttribArray(1); |
| |
| 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); |
| } |
| |