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Diffstat (limited to 'tests/glx/glx-multi-context-ib-1.c')
-rw-r--r-- | tests/glx/glx-multi-context-ib-1.c | 206 |
1 files changed, 206 insertions, 0 deletions
diff --git a/tests/glx/glx-multi-context-ib-1.c b/tests/glx/glx-multi-context-ib-1.c new file mode 100644 index 00000000..61611453 --- /dev/null +++ b/tests/glx/glx-multi-context-ib-1.c @@ -0,0 +1,206 @@ +/* + * Copyright © 2009-2011 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. + */ + +/** @file glx-multi-context-ib.c + * + * Tests that multiple contexts drawing using index buffers work correctly. + * + * Catches a bug in the i965 driver in which index buffer state was + * not reemitted across batchbuffer boundaries, if the first draw + * after the batch didn't use the IB. + */ + +#include <unistd.h> +#include "piglit-util.h" +#include "piglit-glx-util.h" +#include "pthread.h" + +int piglit_width = 50, piglit_height = 50; +static Display *dpy; +static Window win; +static GLXContext ctx0, ctx1; + +GLuint vb_c0, vb_c1, ib_c0, ib_c1; +static float green[] = {0, 1, 0, 0}; +static float red[] = {1, 0, 0, 0}; + +/* c0 sets up an IB that will mess up c1's drawing, by only indexing + * outside of c0's VBO. + */ +static void +context0_init() +{ + float vb_data[] = { + 0, 0, + 0, 0, + 0, 0, + 0, 0, + -1, -1, + 1, -1, + 1, 1, + -1, 1, + }; + uint32_t ib_data[] = { + 4, 5, 6, 7, + }; + + glGenBuffersARB(1, &vb_c0); + glGenBuffersARB(1, &ib_c0); + glBindBufferARB(GL_ARRAY_BUFFER_ARB, vb_c0); + glBindBufferARB(GL_ELEMENT_ARRAY_BUFFER_ARB, ib_c0); + + glBufferDataARB(GL_ARRAY_BUFFER_ARB, sizeof(vb_data), vb_data, + GL_STATIC_DRAW); + glBufferDataARB(GL_ELEMENT_ARRAY_BUFFER_ARB, sizeof(ib_data), ib_data, + GL_STATIC_DRAW); +} + +static void +context1_init() +{ + float vb_data[] = { + -1, -1, + 1, -1, + 1, 1, + -1, 1, + }; + uint32_t ib_data[] = { + 0, 1, 2, 3, + }; + + glGenBuffersARB(1, &vb_c1); + glGenBuffersARB(1, &ib_c1); + glBindBufferARB(GL_ARRAY_BUFFER_ARB, vb_c1); + glBindBufferARB(GL_ELEMENT_ARRAY_BUFFER_ARB, ib_c1); + + glBufferDataARB(GL_ARRAY_BUFFER_ARB, sizeof(vb_data), vb_data, + GL_STATIC_DRAW); + glBufferDataARB(GL_ELEMENT_ARRAY_BUFFER_ARB, sizeof(ib_data), ib_data, + GL_STATIC_DRAW); +} + +static void +context0_frame(void) +{ + glXMakeCurrent(dpy, win, ctx0); + + glColor4fv(red); + + glBindBufferARB(GL_ARRAY_BUFFER_ARB, vb_c0); + glBindBufferARB(GL_ELEMENT_ARRAY_BUFFER_ARB, ib_c0); + glEnableClientState(GL_VERTEX_ARRAY); + glVertexPointer(2, GL_FLOAT, 0, (void *)0); + + glDrawElements(GL_TRIANGLE_FAN, 4, GL_UNSIGNED_INT, (void *)0); +} + +static void +context1_frame(int iter) +{ + glXMakeCurrent(dpy, win, ctx1); + + /* This is the drawing without an IB that triggered the driver + * not reemitting IB state in the next draw call. + * + * The other context just exists to ensure that the race for + * the IB getting smashed is lost, and is also the thing that + * produces the glFlush()-based batchbuffer emits we rely on. + */ + glColor4fv(red); + glDrawArrays(GL_TRIANGLE_FAN, 0, 4); + + /* Failing draw call. */ + if (iter == 1) + glColor4fv(green); + else + glColor4fv(red); + + glBindBufferARB(GL_ARRAY_BUFFER_ARB, vb_c0); + glBindBufferARB(GL_ELEMENT_ARRAY_BUFFER_ARB, ib_c0); + glEnableClientState(GL_VERTEX_ARRAY); + glVertexPointer(2, GL_FLOAT, 0, (void *)0); + + glDrawElements(GL_TRIANGLE_FAN, 4, GL_UNSIGNED_INT, (void *)0); +} + +enum piglit_result +draw(Display *dpy) +{ + bool pass; + + context0_frame(); + context1_frame(0); + /* The issue was that on the second frame, failure occurred. */ + context0_frame(); + context1_frame(1); + + pass = piglit_probe_rect_rgb(0, 0, piglit_width, piglit_height, green); + + glXSwapBuffers(dpy, win); + + glXMakeCurrent(dpy, None, None); + + return pass ? PIGLIT_PASS : PIGLIT_FAIL; +} + +int +main(int argc, char **argv) +{ + XVisualInfo *visinfo; + int i; + + for(i = 1; i < argc; ++i) { + if (!strcmp(argv[i], "-auto")) + piglit_automatic = 1; + else + fprintf(stderr, "Unknown option: %s\n", argv[i]); + } + + dpy = XOpenDisplay(NULL); + if (dpy == NULL) { + fprintf(stderr, "couldn't open display\n"); + piglit_report_result(PIGLIT_FAIL); + } + visinfo = piglit_get_glx_visual(dpy); + win = piglit_get_glx_window(dpy, visinfo); + + XMapWindow(dpy, win); + + ctx0 = piglit_get_glx_context(dpy, visinfo); + ctx1 = piglit_get_glx_context(dpy, visinfo); + + glXMakeCurrent(dpy, win, ctx0); + glewInit(); + piglit_require_extension("GL_ARB_vertex_buffer_object"); + context0_init(); + glXMakeCurrent(dpy, win, ctx1); + context1_init(); + + piglit_glx_event_loop(dpy, draw); + + XFree(visinfo); + glXDestroyContext(dpy, ctx0); + glXDestroyContext(dpy, ctx1); + + return 0; +} |