void texture::unbind() const
{
gl_assert_error("entering texture::unbind()");
#ifdef SCM_GL_USE_DIRECT_STATE_ACCESS
glBindMultiTextureEXT(GL_TEXTURE0 + _occupied_texture_unit, target(), 0);
glDisableIndexedEXT(target(), _occupied_texture_unit);
#else // SCM_GL_USE_DIRECT_STATE_ACCESS
if (_occupied_texture_unit >= 0) {
glActiveTexture(GL_TEXTURE0 + _occupied_texture_unit);
_occupied_texture_unit = -1;
}
glBindTexture(target(), 0);
glDisable(target());
#endif // SCM_GL_USE_DIRECT_STATE_ACCESS
gl_assert_error("exiting texture::unbind()");
}
enum piglit_result
piglit_display(void)
{
GLboolean pass = GL_TRUE;
GLuint tex0, tex1, fb;
GLenum status;
float green[] = {0, 1, 0, 0};
float blue[] = {0, 0, 1, 0};
const GLenum attachments[] = {
GL_COLOR_ATTACHMENT0_EXT,
GL_COLOR_ATTACHMENT1_EXT,
};
piglit_ortho_projection(piglit_width, piglit_height, GL_FALSE);
glGenFramebuffersEXT(1, &fb);
glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, fb);
tex0 = attach_texture(0);
tex1 = attach_texture(1);
glDrawBuffersARB(2, attachments);
status = glCheckFramebufferStatusEXT (GL_FRAMEBUFFER_EXT);
if (status != GL_FRAMEBUFFER_COMPLETE_EXT) {
fprintf(stderr, "fbo incomplete (status = 0x%04x)\n", status);
piglit_report_result(PIGLIT_SKIP);
}
/* Clear to blue. The first buffer will have no blending and
* get overwritten green, and the second will be blended ZERO,
* ONE leaving the blue in place.
*/
glClearColor(0.0, 0.0, 1.0, 0.0);
glClear(GL_COLOR_BUFFER_BIT);
glBlendFunc(GL_ZERO, GL_ONE);
glDisableIndexedEXT(GL_BLEND, 0);
glEnableIndexedEXT(GL_BLEND, 1);
glColor4fv(green);
piglit_draw_rect(0, 0, piglit_width, piglit_height);
glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, piglit_winsys_fbo);
glDisable(GL_BLEND);
/* Draw the two textures to halves of the window. */
glEnable(GL_TEXTURE_2D);
glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
glBindTexture(GL_TEXTURE_2D, tex0);
piglit_draw_rect_tex(0, 0,
piglit_width / 2, piglit_height,
0, 0, 1, 1);
glBindTexture(GL_TEXTURE_2D, tex1);
piglit_draw_rect_tex(piglit_width / 2, 0,
piglit_width, piglit_height,
0, 0, 1, 1);
glDisable(GL_TEXTURE_2D);
glDeleteTextures(1, &tex0);
glDeleteTextures(1, &tex1);
glDeleteFramebuffersEXT(1, &fb);
pass = pass && piglit_probe_rect_rgb(0, 0, piglit_width/2,
piglit_height, green);
pass = pass && piglit_probe_rect_rgb(piglit_width/2, 0, piglit_width/2,
piglit_height, blue);
piglit_present_results();
return pass ? PIGLIT_PASS : PIGLIT_FAIL;
}
