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/*
* Copyright © 2009 Intel Corporation
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*
* Authors:
* Eric Anholt <eric@anholt.net>
* Marek Olšák <maraeo@gmail.com>
*
*/
/** @file fbo-depth.c
*
* Tests that rendering to a 1D texture with a depth texture
* and then drawing both to the framebuffer succeeds.
*/
#include "piglit-util.h"
#define BUF_WIDTH 16
int piglit_width = 50;
int piglit_height = 20;
int piglit_window_mode = GLUT_DOUBLE | GLUT_DEPTH;
#define F(name) #name, name
struct format {
const char *name;
GLuint iformat, format, type;
const char *extension;
} formats[] = {
{F(GL_DEPTH_COMPONENT16), GL_DEPTH_COMPONENT, GL_FLOAT,
"GL_ARB_depth_texture"},
{F(GL_DEPTH_COMPONENT24), GL_DEPTH_COMPONENT, GL_FLOAT,
"GL_ARB_depth_texture"},
{F(GL_DEPTH_COMPONENT32), GL_DEPTH_COMPONENT, GL_FLOAT,
"GL_ARB_depth_texture"},
{F(GL_DEPTH24_STENCIL8), GL_DEPTH_STENCIL, GL_UNSIGNED_INT_24_8_EXT,
"GL_EXT_packed_depth_stencil"},
{F(GL_DEPTH_COMPONENT32F), GL_DEPTH_COMPONENT, GL_FLOAT,
"GL_ARB_depth_buffer_float"},
{F(GL_DEPTH32F_STENCIL8), GL_DEPTH_STENCIL, GL_FLOAT_32_UNSIGNED_INT_24_8_REV,
"GL_ARB_depth_buffer_float"}
};
struct format f;
static void create_1d_fbo(GLuint *out_tex, GLuint *out_ds)
{
GLuint tex, ds, fb;
GLenum status;
/* Create the color buffer. */
glGenTextures(1, &tex);
glBindTexture(GL_TEXTURE_1D, tex);
glTexImage1D(GL_TEXTURE_1D, 0, GL_RGBA,
BUF_WIDTH,
0,
GL_RGBA, GL_UNSIGNED_BYTE, NULL);
assert(glGetError() == 0);
/* Create the depth-stencil buffer. */
glGenTextures(1, &ds);
glBindTexture(GL_TEXTURE_1D, ds);
glTexImage1D(GL_TEXTURE_1D, 0, f.iformat, BUF_WIDTH, 0, f.format, f.type, NULL);
assert(glGetError() == 0);
/* Create the FBO. */
glGenFramebuffersEXT(1, &fb);
glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, fb);
glFramebufferTexture1DEXT(GL_FRAMEBUFFER_EXT,
GL_COLOR_ATTACHMENT0_EXT,
GL_TEXTURE_1D,
tex,
0);
glFramebufferTexture1DEXT(GL_FRAMEBUFFER_EXT,
GL_DEPTH_ATTACHMENT_EXT,
GL_TEXTURE_1D,
ds,
0);
if (f.format == GL_DEPTH_STENCIL) {
glFramebufferTexture1DEXT(GL_FRAMEBUFFER_EXT,
GL_STENCIL_ATTACHMENT_EXT,
GL_TEXTURE_1D,
ds,
0);
}
assert(glGetError() == 0);
status = glCheckFramebufferStatusEXT (GL_FRAMEBUFFER_EXT);
if (status != GL_FRAMEBUFFER_COMPLETE_EXT) {
piglit_report_result(PIGLIT_SKIP);
}
glViewport(0, 0, BUF_WIDTH, 1);
glClearDepth(1);
glEnable(GL_DEPTH_TEST);
glDepthFunc(GL_ALWAYS);
glDepthRange(0, 0);
glClear(GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
piglit_ortho_projection(BUF_WIDTH, 1, GL_FALSE);
/* green */
glColor4f(0.0, 1.0, 0.0, 0.0);
piglit_draw_rect(0, 0, BUF_WIDTH, 1);
glDeleteFramebuffersEXT(1, &fb);
*out_tex = tex;
*out_ds = ds;
}
static void draw_fbo_1d(int x, int y)
{
glViewport(0, 0, piglit_width, piglit_height);
piglit_ortho_projection(piglit_width, piglit_height, GL_FALSE);
glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);
glEnable(GL_TEXTURE_1D);
glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
glTexParameteri(GL_TEXTURE_1D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_1D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_1D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_1D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_1D, GL_TEXTURE_WRAP_R, GL_CLAMP_TO_EDGE);
piglit_draw_rect_tex(x, y, BUF_WIDTH, 1,
0, 0, 1, 1);
}
enum piglit_result piglit_display(void)
{
GLboolean pass = GL_TRUE;
float black[] = {0,0,0,0};
float green[] = {0,1,0,0};
float *expected;
int x;
GLuint tex, ds;
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
glClearColor(1.0, 1.0, 1.0, 1.0);
glClear(GL_COLOR_BUFFER_BIT);
create_1d_fbo(&tex, &ds);
glBindTexture(GL_TEXTURE_1D, tex);
draw_fbo_1d(10, 10);
glBindTexture(GL_TEXTURE_1D, ds);
draw_fbo_1d(10+BUF_WIDTH, 10);
for (x = 0; x < BUF_WIDTH*2; x++) {
if (x < BUF_WIDTH)
expected = green;
else
expected = black;
pass &= piglit_probe_pixel_rgb(10 + x, 10, expected);
}
glDeleteTextures(1, &tex);
glDeleteTextures(1, &ds);
glutSwapBuffers();
return pass ? PIGLIT_PASS : PIGLIT_FAIL;
}
void piglit_init(int argc, char **argv)
{
unsigned i, p;
piglit_require_extension("GL_EXT_framebuffer_object");
for (p = 1; p < argc; p++) {
for (i = 0; i < sizeof(formats)/sizeof(*formats); i++) {
if (!strcmp(argv[p], formats[i].name)) {
piglit_require_extension(formats[i].extension);
f = formats[i];
return;
}
}
}
if (!f.name) {
printf("Not enough parameters.\n");
piglit_report_result(PIGLIT_SKIP);
}
}
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