ascension: src/shader.c@9c44c55d327a (annotated)

src/shader.c@9c44c55d327a (annotated)

src/shader.c

Thu, 18 Apr 2024 22:53:55 +0200

author: Mike Becker <universe@uap-core.de>
date: Thu, 18 Apr 2024 22:53:55 +0200
changeset 65: 9c44c55d327a
parent 50: d8d2e4817db1
permissions: -rw-r--r--

consistently refer to windows by ID - fixes #381

This change discovered that the font cache is completely broken. We created issue #387 for this.

 /*
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
  * Copyright 2023 Mike Becker. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
  *
  *   1. Redistributions of source code must retain the above copyright
  *      notice, this list of conditions and the following disclaimer.
  *
  *   2. Redistributions in binary form must reproduce the above copyright
  *      notice, this list of conditions and the following disclaimer in the
  *      documentation and/or other materials provided with the distribution.
  *
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  * POSSIBILITY OF SUCH DAMAGE.
  */
 #include "ascension/shader.h"
 #include "ascension/files.h"
 #include "ascension/error.h"
 #include <GL/glew.h>
 #include <string.h>
 AscShader asc_shader_compile(unsigned int type,
                              char const *code,
                              int length) {
     GLuint id = glCreateShader(type);
     if (id == 0) {
         asc_error("glCreateShader failed");
         return (AscShader) {0};
     }
     GLint success;
     glShaderSource(id, 1, &code, &length);
     glCompileShader(id);
     glGetShaderiv(id, GL_COMPILE_STATUS, &success);
     if (success) {
         asc_dprintf("Shader %u compiled", id);
         return (AscShader) {id};
     } else {
         char *log = malloc(1024);
         glGetShaderInfoLog(id, 1024, NULL, log);
         glDeleteShader(id);
         asc_error(log);
         free(log);
         return (AscShader) {0};
     }
 }
 AscShader asc_shader_compilef(unsigned int type,
                               char const *filename) {
     asc_file code = asc_file_mmap_rdonly(filename);
     if (code.ptr == NULL) {
         asc_error("Mapping shader file into memory failed");
         return (AscShader) {0};
     }
     AscShader ret = asc_shader_compile(type, code.ptr, code.length);
     asc_file_unmap(code);
     return ret;
 }
 AscShaderProgram asc_shader_link(AscShader vertex,
                                  AscShader fragment) {
     if (vertex.id == 0 || fragment.id == 0) {
         asc_dprintf("Skip linking shader program - shaders have not been loaded correctly.");
         return (AscShaderProgram) {0};
     }
     GLint success;
     GLint id = glCreateProgram();
     if (id <= 0) {
         asc_error("glCreateProgram failed");
         return (AscShaderProgram) {0};
     }
     glAttachShader(id, vertex.id);
     glAttachShader(id, fragment.id);
     glLinkProgram(id);
     glGetProgramiv(id, GL_LINK_STATUS, &success);
     glDetachShader(id, vertex.id);
     glDetachShader(id, fragment.id);
     if (success) {
         asc_dprintf("Shader Program %u linked (vtf: %u, frag: %u)", id, vertex.id, fragment.id);
         AscShaderProgram prog;
         prog.id = id;
         prog.model = glGetUniformLocation(id, "model");
         prog.view = glGetUniformLocation(id, "view");
         prog.projection = glGetUniformLocation(id, "projection");
         return prog;
     } else {
         char *log = malloc(1024);
         glGetProgramInfoLog(id, 1024, NULL, log);
         glDeleteShader(id);
         asc_error(log);
         free(log);
         return (AscShaderProgram) {0};
     }
 }
 void asc_shader_destroy(AscShader shader) {
     if (shader.id > 0) {
         asc_dprintf("Delete Shader %u", shader.id);
         glDeleteShader(shader.id);
     }
     shader.id = 0;
 }
 void asc_shader_program_destroy(AscShaderProgram program) {
     if (program.id > 0) {
         asc_dprintf("Delete Shader Program %u", program.id);
         glDeleteProgram(program.id);
     }
     program.id = 0;
 }
 AscShaderProgram asc_shader_easy_compile_and_link(
         char const *vtxName, char const *fragName) {
     AscShader font_vtx = asc_shader_compilef(GL_VERTEX_SHADER, vtxName);
     AscShader font_frag = asc_shader_compilef(GL_FRAGMENT_SHADER, fragName);
     AscShaderProgram prog = asc_shader_link(font_vtx, font_frag);
     asc_shader_destroy(font_vtx);
     asc_shader_destroy(font_frag);
     return prog;
 }

Mercurial > hg > ascension / annotate

src/shader.c@9c44c55d327a (annotated)

src/shader.c