diff options
| -rw-r--r-- | sv.c | 96 |
1 files changed, 56 insertions, 40 deletions
diff --git a/sv.c b/sv.c index 7bdc051..d74d7a3 100644 --- a/sv.c +++ b/sv.c @@ -15,7 +15,7 @@ int height = 1080; GLFWwindow* window; GLuint vertex; GLuint fragment; -GLuint shader; +GLuint shaderProgram; GLuint textures[4]; struct param { @@ -32,6 +32,12 @@ struct image { }; struct image *images = NULL; +struct shader { + char path[40]; + UT_hash_handle hh; /* makes this structure hashable */ +}; +struct shader *shaders = NULL; + static void error_callback(int error, const char* description) { fputs(description, stderr); } static void key_callback(GLFWwindow* window, int key, int scancode, int action, int mods) { @@ -72,24 +78,24 @@ GLuint compileShader(const char * source, GLenum type) { } GLuint linkShader(GLuint vertex, GLuint fragment) { - glDeleteProgram(shader); - shader = glCreateProgram(); - glAttachShader(shader, vertex); - glAttachShader(shader, fragment); - glLinkProgram(shader); + glUseProgram(0); + glDeleteProgram(shaderProgram); + shaderProgram = glCreateProgram(); + glAttachShader(shaderProgram, vertex); + glAttachShader(shaderProgram, fragment); + glLinkProgram(shaderProgram); int success; char infoLog[512]; - glGetProgramiv(shader, GL_LINK_STATUS, &success); + glGetProgramiv(shaderProgram, GL_LINK_STATUS, &success); if (!success) { - glGetProgramInfoLog(shader, 512, NULL, infoLog); - fputs("Shader linking failed:\n",stderr); - fputs(infoLog,stderr); + glGetProgramInfoLog(shaderProgram, 512, NULL, infoLog); + fputs("Shader linking failed:\n",stderr); + fputs(infoLog,stderr); } - glDetachShader(shader, vertex); - glDetachShader(shader, fragment); + glDetachShader(shaderProgram, vertex); + glDetachShader(shaderProgram, fragment); glDeleteShader(vertex); glDeleteShader(fragment); - glUseProgram(shader); } void createWindow() { @@ -106,48 +112,40 @@ void createShader(char *vert, char *frag) { vertex = compileShader(readShader(vert), GL_VERTEX_SHADER); fragment = compileShader(readShader(frag),GL_FRAGMENT_SHADER); linkShader(vertex,fragment); - unsigned int VAO; - glGenVertexArrays(1, &VAO); - glBindVertexArray(VAO); + glUseProgram(shaderProgram); }; void uniform1f(char * var, float f) { - int v = glGetUniformLocation(shader, var); + int v = glGetUniformLocation(shaderProgram, var); glUniform1f(v, f); } void uniform2f(char * var, float f0, float f1) { - int v = glGetUniformLocation(shader, var); + int v = glGetUniformLocation(shaderProgram, var); glUniform2f(v,f0,f1); } void readImage(char *file, int i) { - glUseProgram(shader); char name[4]; sprintf(name,"img%i",i); - glUniform1i(glGetUniformLocation(shader, name), i); - //glBindTexture(GL_TEXTURE_2D, 0); - //glDeleteTextures(1,&textures[i]); - //GLuint tex; - //glGenTextures(1, &tex); - //textures[i] = tex; - glActiveTexture(GL_TEXTURE0+i); - glBindTexture(GL_TEXTURE_2D,textures[i]); - //glBindTexture(GL_TEXTURE_2D,tex); - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_BORDER); - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_BORDER); - //glEnable(GL_TEXTURE_2D);//Only use this if not using shaders. + glUniform1i(glGetUniformLocation(shaderProgram, name), i); int w,h,comp; stbi_set_flip_vertically_on_load(1); unsigned char* pixels = stbi_load(file, &w, &h, &comp, STBI_rgb_alpha); - glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, w, h, 0, GL_RGBA, GL_UNSIGNED_BYTE, pixels); + char ratio[9]; sprintf(ratio,"%sratio",name); uniform1f(ratio,(float) w/h); + + glActiveTexture(GL_TEXTURE0+i); + glBindTexture(GL_TEXTURE_2D,textures[i]); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_BORDER); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_BORDER); + glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, w, h, 0, GL_RGBA, GL_UNSIGNED_BYTE, pixels); stbi_image_free(pixels); } @@ -162,15 +160,18 @@ void *readStdin() { utstring_new(name); utstring_printf(name, n); - if (utstring_find(name,0,"img",3) == 0) { + if (utstring_find(name,0,"i",1) == 0) { struct image *i; i = (struct image*)malloc(sizeof(struct image)); - i->id = str[3]-'0'; + i->id = str[1]-'0'; strncpy(i->path, strtok(NULL,"\n"),40); HASH_ADD_INT( images, id, i ); } - else if (utstring_find(name,0,"frag",4) == 0) { - createShader("shader.vert",strtok(NULL,"\n")); + else if (utstring_find(name,0,"f",1) == 0) { + struct shader *s; + s = (struct shader*)malloc(sizeof(struct shader)); + strncpy(s->path, strtok(NULL,"\n"),40); + HASH_ADD_STR( shaders, path, s ); } else if (utstring_find(name,0,"q",1) == 0) { glfwSetWindowShouldClose(window, GL_TRUE); @@ -190,6 +191,9 @@ int main(int argc, char **argv) { createWindow(); //createShader("shader.vert","cross.frag"); createShader("shader.vert","shader.frag"); + unsigned int VAO; + glGenVertexArrays(1, &VAO); + glBindVertexArray(VAO); glGenTextures(4, textures); for (int i = 0; i<4; i++) { readImage(argv[i+1],i); } uniform2f("resolution", width,height); @@ -201,21 +205,33 @@ int main(int argc, char **argv) { uniform1f("time",glfwGetTime()); // parameters mutex?? // see uthash/doc/userguide.txt + struct param *p, *tmp0; HASH_ITER(hh, parameters, p, tmp0) { - printf("%s %.f\n",p->name,p->value); + //printf("%s %.f\n",p->name,p->value); uniform1f(p->name,p->value); HASH_DEL(parameters, p); free(p); } + struct image *i, *tmp1; HASH_ITER(hh, images, i, tmp1) { printf("%i %s\n",i->id,i->path); - HASH_DEL(images, i); readImage(i->path,i->id); + HASH_DEL(images, i); free(i); } + struct shader *s, *tmp2; + HASH_ITER(hh, shaders, s, tmp2) { + //printf("%i %s\n",i->id,i->path); + createShader("shader.vert",s->path); + HASH_DEL(shaders, s); + free(s); + for (int i = 0; i<4; i++) { readImage(argv[i+1],i); } + uniform2f("resolution", width,height); + } + glDrawArrays(GL_TRIANGLE_STRIP, 0, 4); glfwSwapBuffers(window); glfwPollEvents(); |