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Diffstat (limited to '3rdparty/glfw/source/tests/msaa.c')
| -rw-r--r-- | 3rdparty/glfw/source/tests/msaa.c | 221 |
1 files changed, 0 insertions, 221 deletions
diff --git a/3rdparty/glfw/source/tests/msaa.c b/3rdparty/glfw/source/tests/msaa.c deleted file mode 100644 index 10bfa3c..0000000 --- a/3rdparty/glfw/source/tests/msaa.c +++ /dev/null @@ -1,221 +0,0 @@ -//======================================================================== -// Multisample anti-aliasing test -// Copyright (c) Camilla Löwy <[email protected]> -// -// This software is provided 'as-is', without any express or implied -// warranty. In no event will the authors be held liable for any damages -// arising from the use of this software. -// -// Permission is granted to anyone to use this software for any purpose, -// including commercial applications, and to alter it and redistribute it -// freely, subject to the following restrictions: -// -// 1. The origin of this software must not be misrepresented; you must not -// claim that you wrote the original software. If you use this software -// in a product, an acknowledgment in the product documentation would -// be appreciated but is not required. -// -// 2. Altered source versions must be plainly marked as such, and must not -// be misrepresented as being the original software. -// -// 3. This notice may not be removed or altered from any source -// distribution. -// -//======================================================================== -// -// This test renders two high contrast, slowly rotating quads, one aliased -// and one (hopefully) anti-aliased, thus allowing for visual verification -// of whether MSAA is indeed enabled -// -//======================================================================== - -#define GLAD_GL_IMPLEMENTATION -#include <glad/gl.h> -#define GLFW_INCLUDE_NONE -#include <GLFW/glfw3.h> - -#if defined(_MSC_VER) - // Make MS math.h define M_PI - #define _USE_MATH_DEFINES -#endif - -#include "linmath.h" - -#include <stdio.h> -#include <stdlib.h> - -#include "getopt.h" - -static const vec2 vertices[4] = -{ - { -0.6f, -0.6f }, - { 0.6f, -0.6f }, - { 0.6f, 0.6f }, - { -0.6f, 0.6f } -}; - -static const char* vertex_shader_text = -"#version 110\n" -"uniform mat4 MVP;\n" -"attribute vec2 vPos;\n" -"void main()\n" -"{\n" -" gl_Position = MVP * vec4(vPos, 0.0, 1.0);\n" -"}\n"; - -static const char* fragment_shader_text = -"#version 110\n" -"void main()\n" -"{\n" -" gl_FragColor = vec4(1.0);\n" -"}\n"; - -static void error_callback(int error, const char* description) -{ - fprintf(stderr, "Error: %s\n", description); -} - -static void key_callback(GLFWwindow* window, int key, int scancode, int action, int mods) -{ - if (action != GLFW_PRESS) - return; - - switch (key) - { - case GLFW_KEY_SPACE: - glfwSetTime(0.0); - break; - case GLFW_KEY_ESCAPE: - glfwSetWindowShouldClose(window, GLFW_TRUE); - break; - } -} - -static void usage(void) -{ - printf("Usage: msaa [-h] [-s SAMPLES]\n"); -} - -int main(int argc, char** argv) -{ - int ch, samples = 4; - GLFWwindow* window; - GLuint vertex_buffer, vertex_shader, fragment_shader, program; - GLint mvp_location, vpos_location; - - while ((ch = getopt(argc, argv, "hs:")) != -1) - { - switch (ch) - { - case 'h': - usage(); - exit(EXIT_SUCCESS); - case 's': - samples = atoi(optarg); - break; - default: - usage(); - exit(EXIT_FAILURE); - } - } - - glfwSetErrorCallback(error_callback); - - if (!glfwInit()) - exit(EXIT_FAILURE); - - if (samples) - printf("Requesting MSAA with %i samples\n", samples); - else - printf("Requesting that MSAA not be available\n"); - - glfwWindowHint(GLFW_SAMPLES, samples); - glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 2); - glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 0); - - window = glfwCreateWindow(800, 400, "Aliasing Detector", NULL, NULL); - if (!window) - { - glfwTerminate(); - exit(EXIT_FAILURE); - } - - glfwSetKeyCallback(window, key_callback); - - glfwMakeContextCurrent(window); - gladLoadGL(glfwGetProcAddress); - glfwSwapInterval(1); - - glGetIntegerv(GL_SAMPLES, &samples); - if (samples) - printf("Context reports MSAA is available with %i samples\n", samples); - else - printf("Context reports MSAA is unavailable\n"); - - glGenBuffers(1, &vertex_buffer); - glBindBuffer(GL_ARRAY_BUFFER, vertex_buffer); - glBufferData(GL_ARRAY_BUFFER, sizeof(vertices), vertices, GL_STATIC_DRAW); - - vertex_shader = glCreateShader(GL_VERTEX_SHADER); - glShaderSource(vertex_shader, 1, &vertex_shader_text, NULL); - glCompileShader(vertex_shader); - - fragment_shader = glCreateShader(GL_FRAGMENT_SHADER); - glShaderSource(fragment_shader, 1, &fragment_shader_text, NULL); - glCompileShader(fragment_shader); - - program = glCreateProgram(); - glAttachShader(program, vertex_shader); - glAttachShader(program, fragment_shader); - glLinkProgram(program); - - mvp_location = glGetUniformLocation(program, "MVP"); - vpos_location = glGetAttribLocation(program, "vPos"); - - glEnableVertexAttribArray(vpos_location); - glVertexAttribPointer(vpos_location, 2, GL_FLOAT, GL_FALSE, - sizeof(vertices[0]), (void*) 0); - - while (!glfwWindowShouldClose(window)) - { - float ratio; - int width, height; - mat4x4 m, p, mvp; - const double angle = glfwGetTime() * M_PI / 180.0; - - glfwGetFramebufferSize(window, &width, &height); - ratio = width / (float) height; - - glViewport(0, 0, width, height); - glClear(GL_COLOR_BUFFER_BIT); - - glUseProgram(program); - - mat4x4_ortho(p, -ratio, ratio, -1.f, 1.f, 0.f, 1.f); - - mat4x4_translate(m, -1.f, 0.f, 0.f); - mat4x4_rotate_Z(m, m, (float) angle); - mat4x4_mul(mvp, p, m); - - glUniformMatrix4fv(mvp_location, 1, GL_FALSE, (const GLfloat*) mvp); - glDisable(GL_MULTISAMPLE); - glDrawArrays(GL_TRIANGLE_FAN, 0, 4); - - mat4x4_translate(m, 1.f, 0.f, 0.f); - mat4x4_rotate_Z(m, m, (float) angle); - mat4x4_mul(mvp, p, m); - - glUniformMatrix4fv(mvp_location, 1, GL_FALSE, (const GLfloat*) mvp); - glEnable(GL_MULTISAMPLE); - glDrawArrays(GL_TRIANGLE_FAN, 0, 4); - - glfwSwapBuffers(window); - glfwPollEvents(); - } - - glfwDestroyWindow(window); - - glfwTerminate(); - exit(EXIT_SUCCESS); -} - |