/* * Copyright (c) 2011 VMware, Inc. * * 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 * on the rights to use, copy, modify, merge, publish, distribute, sub * license, 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 * NON-INFRINGEMENT. IN NO EVENT SHALL VMWARE AND/OR THEIR SUPPLIERS * 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. */ /** * Tests rendering with vertex arrays when neither GL_VERTEX_ARRAY nor generic * attribute 0 array is enabled. Test legacy/fixed-function, GLSL and ARB_vp. * * Brian Paul * May 2011 */ #include "piglit-util-gl.h" PIGLIT_GL_TEST_CONFIG_BEGIN config.supports_gl_compat_version = 10; config.window_visual = PIGLIT_GL_VISUAL_RGBA | PIGLIT_GL_VISUAL_DOUBLE; config.khr_no_error_support = PIGLIT_NO_ERRORS; PIGLIT_GL_TEST_CONFIG_END static const char *TestName = "pos-array"; static const GLfloat VertexData[] = { /* positions */ -1, -1, 1, -1, 1, 1, -1, 1, /* colors */ 1, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 1 }; static GLuint setup_vbo(void) { GLuint buf; glGenBuffersARB(1, &buf); glBindBufferARB(GL_ARRAY_BUFFER_ARB, buf); glBufferDataARB(GL_ARRAY_BUFFER_ARB, sizeof(VertexData), VertexData, GL_DYNAMIC_DRAW_ARB); return buf; } /** Test legacy/fixed-function vertex array drawing */ static GLboolean test_fixedfunc_arrays(void) { static const GLfloat expected[4] = {0.5, 0.0, 0.5, 1.0}; static const GLfloat black[4] = {0.0, 0.0, 0.0, 0.0}; GLuint buf; GLboolean p,pass = GL_TRUE; buf = setup_vbo(); glBindBufferARB(GL_ARRAY_BUFFER_ARB, buf); /* * Draw with conventional arrays. */ { glVertexPointer(2, GL_FLOAT, 2 * sizeof(GLfloat), (void *) 0); glColorPointer(3, GL_FLOAT, 3 * sizeof(GLfloat), (void *) (8 * sizeof(GLfloat))); glEnableClientState(GL_VERTEX_ARRAY); glEnableClientState(GL_COLOR_ARRAY); glClear(GL_COLOR_BUFFER_BIT); glDrawArrays(GL_QUADS, 0, 4); p = piglit_probe_pixel_rgba(piglit_width/2, piglit_height/2, expected); piglit_present_results(); if (!p) { printf("%s: failed when drawing with ", TestName); printf("conventional vertex arrays\n"); pass = GL_FALSE; } glDisableClientState(GL_VERTEX_ARRAY); glDisableClientState(GL_COLOR_ARRAY); } /* * Draw with generic array[0]=position * XXX this should only work when the driver aliases conventional * vertex attributes with the generic attributes (as w/ NVIDIA). * XXX check for that and enable this code some day. */ if (0) { GLuint attrib = 0; glVertexAttribPointerARB(attrib, 2, GL_FLOAT, GL_FALSE, 2 * sizeof(GLfloat), (void *) 0); glColorPointer(3, GL_FLOAT, 3 * sizeof(GLfloat), (void *) (8 * sizeof(GLfloat))); glEnableVertexAttribArrayARB(attrib); glEnableClientState(GL_COLOR_ARRAY); glClear(GL_COLOR_BUFFER_BIT); glDrawArrays(GL_QUADS, 0, 4); p = piglit_probe_pixel_rgba(piglit_width/2, piglit_height/2, expected); piglit_present_results(); if (!p) { printf("%s: failed when drawing with ", TestName); printf("generic array [%u]\n", attrib); pass = GL_FALSE; } glDisableVertexAttribArrayARB(attrib); glDisableClientState(GL_COLOR_ARRAY); } /* * Draw without GL_VERTEX or GENERIC[0] array set (should NOT draw) */ { GLuint attrib = 3; glVertexAttribPointerARB(attrib, 2, GL_FLOAT, GL_FALSE, 2 * sizeof(GLfloat), (void *) 0); glColorPointer(3, GL_FLOAT, 3 * sizeof(GLfloat), (void *) (8 * sizeof(GLfloat))); glEnableVertexAttribArrayARB(attrib); glEnableClientState(GL_COLOR_ARRAY); glClear(GL_COLOR_BUFFER_BIT); glDrawArrays(GL_QUADS, 0, 4); p = piglit_probe_pixel_rgba(piglit_width/2, piglit_height/2, black); piglit_present_results(); if (!p) { printf("%s: failed when drawing with ", TestName); printf("generic array [%u]\n", attrib); pass = GL_FALSE; } glDisableVertexAttribArrayARB(attrib); glDisableClientState(GL_COLOR_ARRAY); } piglit_present_results(); glDeleteBuffersARB(1, &buf); return pass; } /** Test drawing with GLSL shaders */ static GLboolean test_glsl_arrays(void) { static const char *vertShaderText = "attribute vec4 color, pos; \n" "varying vec4 colorVar; \n" "void main() \n" "{ \n" " colorVar = color; \n" " gl_Position = gl_ModelViewProjectionMatrix * pos; \n" "} \n"; static const char *fragShaderText = "varying vec4 colorVar; \n" "void main() \n" "{ \n" " gl_FragColor = colorVar; \n" "} \n"; static const GLfloat expected[4] = {0.5, 0.0, 0.5, 1.0}; GLuint buf; GLboolean p, pass = GL_TRUE; GLint posAttrib, colorAttrib; GLuint vertShader, fragShader, program; buf = setup_vbo(); glBindBufferARB(GL_ARRAY_BUFFER_ARB, buf); vertShader = piglit_compile_shader_text(GL_VERTEX_SHADER, vertShaderText); fragShader = piglit_compile_shader_text(GL_FRAGMENT_SHADER, fragShaderText); program = piglit_link_simple_program(vertShader, fragShader); glUseProgram(program); /* * Draw with compiler-assigned attribute locations */ { posAttrib = glGetAttribLocation(program, "pos"); colorAttrib = glGetAttribLocation(program, "color"); if (0) printf("%s: GLSL posAttrib = %d colorAttrib = %d\n", TestName, posAttrib, colorAttrib); glVertexAttribPointerARB(posAttrib, 2, GL_FLOAT, GL_FALSE, 2 * sizeof(GLfloat), (void *) 0); glVertexAttribPointerARB(colorAttrib, 3, GL_FLOAT, GL_FALSE, 3 * sizeof(GLfloat), (void *) (8 * sizeof(GLfloat))); glEnableVertexAttribArrayARB(posAttrib); glEnableVertexAttribArrayARB(colorAttrib); glClear(GL_COLOR_BUFFER_BIT); glDrawArrays(GL_QUADS, 0, 4); p = piglit_probe_pixel_rgba(piglit_width/2, piglit_height/2, expected); piglit_present_results(); if (!p) { printf("%s: failed when drawing with ", TestName); printf("compiler-assigned attribute locations\n"); pass = GL_FALSE; } glDisableVertexAttribArrayARB(posAttrib); glDisableVertexAttribArrayARB(colorAttrib); } /* * Draw with user-defined attribute bindings, not using 0. */ { posAttrib = 5; colorAttrib = 7; glBindAttribLocation(program, posAttrib, "pos"); glBindAttribLocation(program, colorAttrib, "color"); glLinkProgram(program); glVertexAttribPointerARB(posAttrib, 2, GL_FLOAT, GL_FALSE, 2 * sizeof(GLfloat), (void *) 0); glVertexAttribPointerARB(colorAttrib, 3, GL_FLOAT, GL_FALSE, 3 * sizeof(GLfloat), (void *) (8 * sizeof(GLfloat))); glEnableVertexAttribArrayARB(posAttrib); glEnableVertexAttribArrayARB(colorAttrib); glClear(GL_COLOR_BUFFER_BIT); glDrawArrays(GL_QUADS, 0, 4); p = piglit_probe_pixel_rgba(piglit_width/2, piglit_height/2, expected); piglit_present_results(); if (!p) { printf("%s: failed when drawing with ", TestName); printf("user-assigned attribute locations\n"); pass = GL_FALSE; } glDisableVertexAttribArrayARB(posAttrib); glDisableVertexAttribArrayARB(colorAttrib); } glDeleteShader(vertShader); glDeleteProgram(program); glDeleteBuffersARB(1, &buf); return pass; } /** * Test drawing with GLSL shaders and no vertex arrays. * Use a vertex shader with a hard-coded vertex position. */ static GLboolean test_glsl_no_arrays(void) { static const char *noVertexVertShaderText = "varying vec4 colorVar; \n" "void main() \n" "{ \n" " colorVar = vec4(1.0, 1.0, 0.0, 1.0); \n" " gl_Position = vec4(0.0, 0.0, 0.0, 1.0); \n" "} \n"; static const char *fragShaderText = "varying vec4 colorVar; \n" "void main() \n" "{ \n" " gl_FragColor = colorVar; \n" "} \n"; static const GLfloat expected[4] = {1.0, 1.0, 0.0, 1.0}; GLboolean p, pass = GL_TRUE; GLuint vertShader, fragShader, program; vertShader = piglit_compile_shader_text(GL_VERTEX_SHADER, noVertexVertShaderText); fragShader = piglit_compile_shader_text(GL_FRAGMENT_SHADER, fragShaderText); program = piglit_link_simple_program(vertShader, fragShader); glUseProgram(program); glClear(GL_COLOR_BUFFER_BIT); glPointSize(3.0); glDrawArrays(GL_POINTS, 0, 1); glPointSize(1.0); p = piglit_probe_pixel_rgba(piglit_width/2, piglit_height/2, expected); piglit_present_results(); if (!p) { printf("%s: failed when drawing with GLSL and no vertex arrays\n", TestName); pass = GL_FALSE; } glDeleteShader(vertShader); glDeleteProgram(program); return pass; } /** Test drawing with GL_ARB_vertex_program */ static GLboolean test_arbvp_arrays(void) { /* Use legacy vertex array/attribute */ static const char *legacyVertProgramText = "!!ARBvp1.0 \n" "ATTRIB iPos = vertex.position;\n" "OUTPUT oPos = result.position;\n" "PARAM mvp[4] = { state.matrix.mvp };\n" "DP4 oPos.x, mvp[0], iPos;\n" "DP4 oPos.y, mvp[1], iPos;\n" "DP4 oPos.z, mvp[2], iPos;\n" "DP4 oPos.w, mvp[3], iPos;\n" "MOV result.color, vertex.color;\n" "END"; /* Use generic vertex array/attribute[0] */ static const char *generic0VertProgramText = "!!ARBvp1.0 \n" "ATTRIB iPos = vertex.attrib[0];\n" "OUTPUT oPos = result.position;\n" "PARAM mvp[4] = { state.matrix.mvp };\n" "DP4 oPos.x, mvp[0], iPos;\n" "DP4 oPos.y, mvp[1], iPos;\n" "DP4 oPos.z, mvp[2], iPos;\n" "DP4 oPos.w, mvp[3], iPos;\n" "MOV result.color, vertex.color;\n" "END"; /* Use generic vertex array/attribute[6] */ static const char *generic6VertProgramText = "!!ARBvp1.0 \n" "ATTRIB iPos = vertex.attrib[6];\n" "OUTPUT oPos = result.position;\n" "PARAM mvp[4] = { state.matrix.mvp };\n" "DP4 oPos.x, mvp[0], iPos;\n" "DP4 oPos.y, mvp[1], iPos;\n" "DP4 oPos.z, mvp[2], iPos;\n" "DP4 oPos.w, mvp[3], iPos;\n" "MOV result.color, vertex.color;\n" "END"; static const char *fragProgramText = "!!ARBfp1.0 \n" "MOV result.color, fragment.color;\n" "END"; static const GLfloat expected[4] = {0.5, 0.0, 0.5, 1.0}; GLuint buf; GLboolean p, pass = GL_TRUE; GLuint vertProg, fragProg; buf = setup_vbo(); glBindBufferARB(GL_ARRAY_BUFFER_ARB, buf); fragProg = piglit_compile_program(GL_FRAGMENT_PROGRAM_ARB, fragProgramText); glBindProgramARB(GL_FRAGMENT_PROGRAM_ARB, fragProg); glEnable(GL_FRAGMENT_PROGRAM_ARB); glEnable(GL_VERTEX_PROGRAM_ARB); /* * Draw with pos in conventional arrays. */ { vertProg = piglit_compile_program(GL_VERTEX_PROGRAM_ARB, legacyVertProgramText); glBindProgramARB(GL_VERTEX_PROGRAM_ARB, vertProg); glVertexPointer(2, GL_FLOAT, 2 * sizeof(GLfloat), (void *) 0); glColorPointer(3, GL_FLOAT, 3 * sizeof(GLfloat), (void *) (8 * sizeof(GLfloat))); glEnableClientState(GL_VERTEX_ARRAY); glEnableClientState(GL_COLOR_ARRAY); glClear(GL_COLOR_BUFFER_BIT); glDrawArrays(GL_QUADS, 0, 4); p = piglit_probe_pixel_rgba(piglit_width/2, piglit_height/2, expected); piglit_present_results(); if (!p) { printf("%s: failed when drawing with ", TestName); printf("ARB VP and conventional vertex arrays\n"); pass = GL_FALSE; } glDisableClientState(GL_VERTEX_ARRAY); glDisableClientState(GL_COLOR_ARRAY); glDeleteProgramsARB(1, &vertProg); } /* * Draw with pos in generic array[0]. */ { GLuint attrib = 0; vertProg = piglit_compile_program(GL_VERTEX_PROGRAM_ARB, generic0VertProgramText); glBindProgramARB(GL_VERTEX_PROGRAM_ARB, vertProg); glVertexAttribPointerARB(attrib, 2, GL_FLOAT, GL_FALSE, 2 * sizeof(GLfloat), (void *) 0); glColorPointer(3, GL_FLOAT, 3 * sizeof(GLfloat), (void *) (8 * sizeof(GLfloat))); glEnableVertexAttribArrayARB(attrib); glEnableClientState(GL_COLOR_ARRAY); glClear(GL_COLOR_BUFFER_BIT); glDrawArrays(GL_QUADS, 0, 4); p = piglit_probe_pixel_rgba(piglit_width/2, piglit_height/2, expected); piglit_present_results(); if (!p) { printf("%s: failed when drawing with ", TestName); printf("ARB VP and generic vertex array[%u]\n", attrib); pass = GL_FALSE; } glDisableVertexAttribArrayARB(attrib); glDisableClientState(GL_COLOR_ARRAY); glDeleteProgramsARB(1, &vertProg); } /* * Draw with pos in generic array[6]. */ { GLuint attrib = 6; vertProg = piglit_compile_program(GL_VERTEX_PROGRAM_ARB, generic6VertProgramText); glBindProgramARB(GL_VERTEX_PROGRAM_ARB, vertProg); glVertexAttribPointerARB(attrib, 2, GL_FLOAT, GL_FALSE, 2 * sizeof(GLfloat), (void *) 0); glColorPointer(3, GL_FLOAT, 3 * sizeof(GLfloat), (void *) (8 * sizeof(GLfloat))); glEnableVertexAttribArrayARB(attrib); glEnableClientState(GL_COLOR_ARRAY); glClear(GL_COLOR_BUFFER_BIT); glDrawArrays(GL_QUADS, 0, 4); p = piglit_probe_pixel_rgba(piglit_width/2, piglit_height/2, expected); piglit_present_results(); if (!p) { printf("%s: failed when drawing with ", TestName); printf("ARB VP and generic vertex array[%u]\n", attrib); pass = GL_FALSE; } glDisableVertexAttribArrayARB(attrib); glDisableClientState(GL_COLOR_ARRAY); glDeleteProgramsARB(1, &vertProg); } glDisable(GL_FRAGMENT_PROGRAM_ARB); glDisable(GL_VERTEX_PROGRAM_ARB); glDeleteProgramsARB(1, &fragProg); glDeleteBuffersARB(1, &buf); return pass; } enum piglit_result piglit_display(void) { GLboolean pass = GL_TRUE; pass &= test_fixedfunc_arrays(); if (piglit_is_extension_supported("GL_ARB_vertex_program") && piglit_is_extension_supported("GL_ARB_fragment_program")) { pass &= test_arbvp_arrays(); } if (piglit_is_extension_supported("GL_ARB_shader_objects") && piglit_is_extension_supported("GL_ARB_vertex_shader") && piglit_is_extension_supported("GL_ARB_fragment_shader")) { pass &= test_glsl_arrays(); pass &= test_glsl_no_arrays(); } return pass ? PIGLIT_PASS : PIGLIT_FAIL; } void piglit_init(int argc, char **argv) { piglit_require_extension("GL_ARB_vertex_buffer_object"); }