mirror of
https://github.com/bjornbytes/lovr.git
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005d4b93f2
They aren't really part of the math module since they are shared across several modules, more "util"-y.
920 lines
29 KiB
C
920 lines
29 KiB
C
#include "graphics/graphics.h"
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#include "resources/shaders.h"
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#include "data/rasterizer.h"
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#include "event/event.h"
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#include "filesystem/filesystem.h"
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#include "util.h"
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#include "lib/glfw.h"
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#include "lib/math.h"
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#include "lib/stb/stb_image.h"
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#define _USE_MATH_DEFINES
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#include <stdlib.h>
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#include <string.h>
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#include <math.h>
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#ifdef LOVR_USE_OCULUS_MOBILE
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#include <EGL/egl.h>
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#include <EGL/eglext.h>
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#endif
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static GraphicsState state;
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#ifndef NO_WINDOW
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static void onCloseWindow(GLFWwindow* window) {
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if (window == state.window) {
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lovrEventPush((Event) { .type = EVENT_QUIT, .data.quit = { false, 0 } });
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}
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}
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#endif
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static void onResizeWindow(GLFWwindow* window, int width, int height) {
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if (window == state.window) {
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state.width = width;
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state.height = height;
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}
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}
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// Base
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void lovrGraphicsInit(bool gammaCorrect) {
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state.gammaCorrect = gammaCorrect;
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}
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void lovrGraphicsDestroy() {
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if (!state.initialized) return;
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while (state.pipeline > 0) {
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lovrGraphicsPopPipeline();
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}
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lovrGraphicsSetShader(NULL);
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lovrGraphicsSetFont(NULL);
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lovrGraphicsSetCanvas(NULL);
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for (int i = 0; i < MAX_DEFAULT_SHADERS; i++) {
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lovrRelease(state.defaultShaders[i]);
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}
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lovrRelease(state.defaultMaterial);
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lovrRelease(state.defaultFont);
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lovrRelease(state.defaultMesh);
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lovrGpuDestroy();
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memset(&state, 0, sizeof(GraphicsState));
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}
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void lovrGraphicsPresent() {
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#ifndef NO_WINDOW
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glfwSwapBuffers(state.window);
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#endif
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lovrGpuPresent();
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}
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void lovrGraphicsCreateWindow(int w, int h, bool fullscreen, int msaa, const char* title, const char* icon) {
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lovrAssert(!state.window && !state.initialized, "Window is already created");
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#ifndef NO_WINDOW
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if ((state.window = glfwGetCurrentContext()) == NULL) {
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glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
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glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3);
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glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
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glfwWindowHint(GLFW_OPENGL_FORWARD_COMPAT, GLFW_TRUE);
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glfwWindowHint(GLFW_SAMPLES, msaa);
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glfwWindowHint(GLFW_RESIZABLE, GLFW_FALSE);
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glfwWindowHint(GLFW_SRGB_CAPABLE, state.gammaCorrect);
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GLFWmonitor* monitor = glfwGetPrimaryMonitor();
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const GLFWvidmode* mode = glfwGetVideoMode(monitor);
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if (fullscreen) {
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glfwWindowHint(GLFW_RED_BITS, mode->redBits);
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glfwWindowHint(GLFW_GREEN_BITS, mode->greenBits);
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glfwWindowHint(GLFW_BLUE_BITS, mode->blueBits);
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glfwWindowHint(GLFW_REFRESH_RATE, mode->refreshRate);
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}
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state.window = glfwCreateWindow(w ? w : mode->width, h ? h : mode->height, title, fullscreen ? monitor : NULL, NULL);
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if (!state.window) {
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glfwTerminate();
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lovrThrow("Could not create window");
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}
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if (icon) {
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GLFWimage image;
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size_t size;
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lovrAssert(lovrFilesystemIsFile(icon), "Could not read icon from %s", icon);
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void* data = lovrFilesystemRead(icon, &size);
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lovrAssert(data, "Could not read icon from %s", icon);
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image.pixels = stbi_load_from_memory(data, size, &image.width, &image.height, NULL, 4);
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lovrAssert(image.pixels, "Could not read icon from %s", icon);
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glfwSetWindowIcon(state.window, 1, &image);
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free(image.pixels);
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free(data);
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}
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glfwMakeContextCurrent(state.window);
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glfwSetWindowCloseCallback(state.window, onCloseWindow);
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glfwSetWindowSizeCallback(state.window, onResizeWindow);
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}
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#endif
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#if !(defined(EMSCRIPTEN) || defined(LOVR_USE_OCULUS_MOBILE))
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glfwSwapInterval(0);
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#endif
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glfwGetFramebufferSize(state.window, &state.width, &state.height);
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#if LOVR_USE_OCULUS_MOBILE
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getGpuProcProc getProcAddress = eglGetProcAddress;
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#else
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getGpuProcProc getProcAddress = glfwGetProcAddress;
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#endif
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lovrGpuInit(state.gammaCorrect, getProcAddress);
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VertexFormat format;
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vertexFormatInit(&format);
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vertexFormatAppend(&format, "lovrPosition", ATTR_FLOAT, 3);
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vertexFormatAppend(&format, "lovrNormal", ATTR_FLOAT, 3);
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vertexFormatAppend(&format, "lovrTexCoord", ATTR_FLOAT, 2);
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state.defaultMesh = lovrMeshCreate(64, format, MESH_TRIANGLES, USAGE_STREAM);
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lovrGraphicsReset();
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state.initialized = true;
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}
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int lovrGraphicsGetWidth() {
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return state.width;
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}
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int lovrGraphicsGetHeight() {
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return state.height;
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}
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void lovrGraphicsSetCamera(Camera* camera, bool clear) {
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if (state.camera.canvas && (!camera || camera->canvas != state.camera.canvas)) {
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lovrCanvasResolve(state.camera.canvas);
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}
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if (!camera) {
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state.camera.canvas = NULL;
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state.camera.stereo = false;
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for (int i = 0; i < 2; i++) {
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mat4_identity(state.camera.viewMatrix[i]);
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mat4_perspective(state.camera.projection[i], .01f, 100.f, 67 * M_PI / 180., (float) state.width / state.height);
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}
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} else {
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state.camera = *camera;
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}
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if (clear) {
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Color backgroundColor = lovrGraphicsGetBackgroundColor();
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lovrGpuClear(state.camera.canvas, &backgroundColor, &(float) { 1. }, &(int) { 0 });
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}
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}
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// State
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void lovrGraphicsReset() {
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while (state.pipeline > 0) {
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lovrGraphicsPopPipeline();
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}
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state.transform = 0;
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lovrGraphicsSetCamera(NULL, false);
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lovrGraphicsSetBackgroundColor((Color) { 0, 0, 0, 1 });
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lovrGraphicsSetBlendMode(BLEND_ALPHA, BLEND_ALPHA_MULTIPLY);
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lovrGraphicsSetCanvas(NULL);
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lovrGraphicsSetColor((Color) { 1, 1, 1, 1 });
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lovrGraphicsSetCullingEnabled(false);
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lovrGraphicsSetDefaultFilter((TextureFilter) { .mode = FILTER_TRILINEAR });
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lovrGraphicsSetDepthTest(COMPARE_LEQUAL, true);
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lovrGraphicsSetFont(NULL);
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lovrGraphicsSetLineWidth(1);
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lovrGraphicsSetPointSize(1);
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lovrGraphicsSetShader(NULL);
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lovrGraphicsSetStencilTest(COMPARE_NONE, 0);
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lovrGraphicsSetWinding(WINDING_COUNTERCLOCKWISE);
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lovrGraphicsSetWireframe(false);
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lovrGraphicsOrigin();
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}
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void lovrGraphicsPushPipeline() {
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lovrAssert(++state.pipeline < MAX_PIPELINES, "Unbalanced pipeline stack (more pushes than pops?)");
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memcpy(&state.pipelines[state.pipeline], &state.pipelines[state.pipeline - 1], sizeof(Pipeline));
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lovrRetain(state.pipelines[state.pipeline].canvas);
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lovrRetain(state.pipelines[state.pipeline].font);
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lovrRetain(state.pipelines[state.pipeline].shader);
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}
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void lovrGraphicsPopPipeline() {
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lovrRelease(state.pipelines[state.pipeline].canvas);
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lovrRelease(state.pipelines[state.pipeline].font);
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lovrRelease(state.pipelines[state.pipeline].shader);
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lovrAssert(--state.pipeline >= 0, "Unbalanced pipeline stack (more pops than pushes?)");
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}
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Color lovrGraphicsGetBackgroundColor() {
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return state.pipelines[state.pipeline].backgroundColor;
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}
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void lovrGraphicsSetBackgroundColor(Color color) {
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state.pipelines[state.pipeline].backgroundColor = color;
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}
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void lovrGraphicsGetBlendMode(BlendMode* mode, BlendAlphaMode* alphaMode) {
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*mode = state.pipelines[state.pipeline].blendMode;
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*alphaMode = state.pipelines[state.pipeline].blendAlphaMode;
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}
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void lovrGraphicsSetBlendMode(BlendMode mode, BlendAlphaMode alphaMode) {
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state.pipelines[state.pipeline].blendMode = mode;
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state.pipelines[state.pipeline].blendAlphaMode = alphaMode;
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}
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Canvas* lovrGraphicsGetCanvas() {
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return state.pipelines[state.pipeline].canvas;
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}
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void lovrGraphicsSetCanvas(Canvas* canvas) {
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if (state.pipelines[state.pipeline].canvas) {
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lovrCanvasResolve(state.pipelines[state.pipeline].canvas);
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}
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state.pipelines[state.pipeline].canvas = canvas;
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}
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Color lovrGraphicsGetColor() {
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return state.pipelines[state.pipeline].color;
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}
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void lovrGraphicsSetColor(Color color) {
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state.pipelines[state.pipeline].color = color;
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}
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bool lovrGraphicsIsCullingEnabled() {
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return state.pipelines[state.pipeline].culling;
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}
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void lovrGraphicsSetCullingEnabled(bool culling) {
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state.pipelines[state.pipeline].culling = culling;
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}
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TextureFilter lovrGraphicsGetDefaultFilter() {
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return state.defaultFilter;
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}
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void lovrGraphicsSetDefaultFilter(TextureFilter filter) {
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state.defaultFilter = filter;
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}
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void lovrGraphicsGetDepthTest(CompareMode* mode, bool* write) {
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*mode = state.pipelines[state.pipeline].depthTest;
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*write = state.pipelines[state.pipeline].depthWrite;
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}
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void lovrGraphicsSetDepthTest(CompareMode mode, bool write) {
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state.pipelines[state.pipeline].depthTest = mode;
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state.pipelines[state.pipeline].depthWrite = write;
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}
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Font* lovrGraphicsGetFont() {
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if (!state.pipelines[state.pipeline].font) {
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if (!state.defaultFont) {
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Rasterizer* rasterizer = lovrRasterizerCreate(NULL, 32);
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state.defaultFont = lovrFontCreate(rasterizer);
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lovrRelease(rasterizer);
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}
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lovrGraphicsSetFont(state.defaultFont);
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}
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return state.pipelines[state.pipeline].font;
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}
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void lovrGraphicsSetFont(Font* font) {
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lovrRetain(font);
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lovrRelease(state.pipelines[state.pipeline].font);
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state.pipelines[state.pipeline].font = font;
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}
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bool lovrGraphicsIsGammaCorrect() {
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return state.gammaCorrect;
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}
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float lovrGraphicsGetLineWidth() {
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return state.pipelines[state.pipeline].lineWidth;
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}
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void lovrGraphicsSetLineWidth(float width) {
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state.pipelines[state.pipeline].lineWidth = width;
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}
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float lovrGraphicsGetPointSize() {
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return state.pipelines[state.pipeline].pointSize;
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}
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void lovrGraphicsSetPointSize(float size) {
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state.pipelines[state.pipeline].pointSize = size;
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}
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Shader* lovrGraphicsGetShader() {
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return state.pipelines[state.pipeline].shader;
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}
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void lovrGraphicsSetShader(Shader* shader) {
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lovrAssert(!shader || lovrShaderGetType(shader) == SHADER_GRAPHICS, "Compute shaders can not be set as the active shader");
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lovrRetain(shader);
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lovrRelease(state.pipelines[state.pipeline].shader);
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state.pipelines[state.pipeline].shader = shader;
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}
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void lovrGraphicsGetStencilTest(CompareMode* mode, int* value) {
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*mode = state.pipelines[state.pipeline].stencilMode;
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*value = state.pipelines[state.pipeline].stencilValue;
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}
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void lovrGraphicsSetStencilTest(CompareMode mode, int value) {
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state.pipelines[state.pipeline].stencilMode = mode;
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state.pipelines[state.pipeline].stencilValue = value;
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}
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Winding lovrGraphicsGetWinding() {
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return state.pipelines[state.pipeline].winding;
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}
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void lovrGraphicsSetWinding(Winding winding) {
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state.pipelines[state.pipeline].winding = winding;
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}
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bool lovrGraphicsIsWireframe() {
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return state.pipelines[state.pipeline].wireframe;
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}
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void lovrGraphicsSetWireframe(bool wireframe) {
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#ifndef EMSCRIPTEN
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state.pipelines[state.pipeline].wireframe = wireframe;
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#endif
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}
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// Transforms
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void lovrGraphicsPush() {
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lovrAssert(++state.transform < MAX_TRANSFORMS, "Unbalanced matrix stack (more pushes than pops?)");
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mat4_init(state.transforms[state.transform], state.transforms[state.transform - 1]);
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}
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void lovrGraphicsPop() {
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lovrAssert(--state.transform >= 0, "Unbalanced matrix stack (more pops than pushes?)");
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}
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void lovrGraphicsOrigin() {
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mat4_identity(state.transforms[state.transform]);
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}
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void lovrGraphicsTranslate(float x, float y, float z) {
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mat4_translate(state.transforms[state.transform], x, y, z);
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}
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void lovrGraphicsRotate(float angle, float ax, float ay, float az) {
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mat4_rotate(state.transforms[state.transform], angle, ax, ay, az);
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}
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void lovrGraphicsScale(float x, float y, float z) {
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mat4_scale(state.transforms[state.transform], x, y, z);
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}
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void lovrGraphicsMatrixTransform(mat4 transform) {
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mat4_multiply(state.transforms[state.transform], transform);
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}
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void lovrGraphicsSetProjection(mat4 projection) {
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mat4_set(state.camera.projection[0], projection);
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mat4_set(state.camera.projection[1], projection);
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}
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// Rendering
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VertexPointer lovrGraphicsGetVertexPointer(uint32_t count) {
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lovrMeshResize(state.defaultMesh, count);
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return lovrMeshMapVertices(state.defaultMesh, 0, count, false, true);
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}
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void lovrGraphicsClear(Color* color, float* depth, int* stencil) {
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Pipeline* pipeline = &state.pipelines[state.pipeline];
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Canvas* canvas = pipeline->canvas ? pipeline->canvas : state.camera.canvas;
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lovrGpuClear(canvas, color, depth, stencil);
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}
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void lovrGraphicsDiscard(bool color, bool depth, bool stencil) {
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Pipeline* pipeline = &state.pipelines[state.pipeline];
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Canvas* canvas = pipeline->canvas ? pipeline->canvas : state.camera.canvas;
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lovrGpuDiscard(canvas, color, depth, stencil);
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}
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void lovrGraphicsDraw(DrawCommand* draw) {
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Mesh* mesh = draw->mesh;
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if (!mesh) {
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int drawCount = draw->range.count ? draw->range.count : (draw->index.count ? draw->index.count : draw->vertex.count);
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mesh = state.defaultMesh;
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lovrMeshSetDrawMode(mesh, draw->mode);
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lovrMeshSetDrawRange(mesh, draw->range.start, drawCount);
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if (draw->vertex.count) {
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VertexPointer vertexPointer = lovrGraphicsGetVertexPointer(draw->vertex.count);
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memcpy(vertexPointer.raw, draw->vertex.data, draw->vertex.count * 8 * sizeof(float));
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if (draw->index.count) {
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IndexPointer indexPointer = lovrMeshWriteIndices(mesh, draw->index.count, sizeof(uint16_t));
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memcpy(indexPointer.shorts, draw->index.data, draw->index.count * sizeof(uint16_t));
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} else {
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lovrMeshWriteIndices(mesh, 0, 0);
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}
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}
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}
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if (draw->transform) {
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lovrGraphicsPush();
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lovrGraphicsMatrixTransform(draw->transform);
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}
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Pipeline* pipeline = &state.pipelines[state.pipeline];
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Canvas* canvas = pipeline->canvas ? pipeline->canvas : state.camera.canvas;
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bool stereo = !draw->forceMono && (canvas ? lovrCanvasIsStereo(canvas) : state.camera.stereo);
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float w = (canvas ? lovrCanvasGetWidth(canvas) : state.width) >> stereo;
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float h = canvas ? lovrCanvasGetHeight(canvas) : state.height;
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float viewports[2][4] = { { 0, 0, w, h, }, { w, 0, w, h } };
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int viewportCount = 1 + stereo;
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Material* material = draw->material ? draw->material : state.defaultMaterial;
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if (!material) material = state.defaultMaterial = lovrMaterialCreate();
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if (!draw->material) {
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for (int i = 0; i < MAX_MATERIAL_TEXTURES; i++) {
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lovrMaterialSetTexture(material, i, draw->textures[i]);
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}
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}
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Shader* shader = pipeline->shader ? pipeline->shader : state.defaultShaders[draw->shader];
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if (!shader) shader = state.defaultShaders[draw->shader] = lovrShaderCreateDefault(draw->shader);
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mat4 transform = state.transforms[state.transform];
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lovrShaderSetMatrices(shader, "lovrModel", transform, 0, 16);
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lovrShaderSetMatrices(shader, "lovrViews", state.camera.viewMatrix[0], 0, 32);
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lovrShaderSetMatrices(shader, "lovrProjections", state.camera.projection[0], 0, 32);
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float modelView[32];
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mat4_multiply(mat4_set(modelView, state.camera.viewMatrix[0]), transform);
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mat4_multiply(mat4_set(modelView + 16, state.camera.viewMatrix[1]), transform);
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lovrShaderSetMatrices(shader, "lovrTransforms", modelView, 0, 32);
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if (lovrShaderHasUniform(shader, "lovrNormalMatrices")) {
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if (mat4_invert(modelView) && mat4_invert(modelView + 16)) {
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mat4_transpose(modelView);
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mat4_transpose(modelView + 16);
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} else {
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mat4_identity(modelView);
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mat4_identity(modelView + 16);
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}
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float normalMatrices[18] = {
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modelView[0], modelView[1], modelView[2],
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modelView[4], modelView[5], modelView[6],
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modelView[8], modelView[9], modelView[10],
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modelView[16], modelView[17], modelView[18],
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modelView[20], modelView[21], modelView[22],
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modelView[24], modelView[25], modelView[26]
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};
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lovrShaderSetMatrices(shader, "lovrNormalMatrices", normalMatrices, 0, 18);
|
|
}
|
|
|
|
float* pose = lovrMeshGetPose(mesh);
|
|
if (pose) {
|
|
lovrShaderSetMatrices(shader, "lovrPose", pose, 0, MAX_BONES * 16);
|
|
} else {
|
|
lovrShaderSetMatrices(shader, "lovrPose", (float[16]) MAT4_IDENTITY, 0, 16);
|
|
}
|
|
|
|
lovrShaderSetInts(shader, "lovrViewportCount", &viewportCount, 0, 1);
|
|
lovrShaderSetColor(shader, "lovrColor", pipeline->color);
|
|
lovrShaderSetFloats(shader, "lovrPointSize", &pipeline->pointSize, 0, 1);
|
|
|
|
for (int i = 0; i < MAX_MATERIAL_SCALARS; i++) {
|
|
float value = lovrMaterialGetScalar(material, i);
|
|
lovrShaderSetFloats(shader, lovrShaderScalarUniforms[i], &value, 0, 1);
|
|
}
|
|
|
|
for (int i = 0; i < MAX_MATERIAL_COLORS; i++) {
|
|
lovrShaderSetColor(shader, lovrShaderColorUniforms[i], lovrMaterialGetColor(material, i));
|
|
}
|
|
|
|
for (int i = 0; i < MAX_MATERIAL_TEXTURES; i++) {
|
|
Texture* texture = lovrMaterialGetTexture(material, i);
|
|
lovrShaderSetTextures(shader, lovrShaderTextureUniforms[i], &texture, 0, 1);
|
|
}
|
|
|
|
lovrShaderSetMatrices(shader, "lovrMaterialTransform", material->transform, 0, 9);
|
|
|
|
// Bind
|
|
lovrCanvasBind(canvas, true);
|
|
lovrGpuBindPipeline(pipeline);
|
|
lovrMeshBind(mesh, shader, viewportCount);
|
|
|
|
// Draw
|
|
if (lovrGpuGetSupported()->singlepass) {
|
|
int instances = MAX(draw->instances, 1) * viewportCount;
|
|
lovrGpuSetViewports(&viewports[0][0], viewportCount);
|
|
lovrShaderBind(shader);
|
|
lovrMeshDraw(mesh, instances);
|
|
} else {
|
|
for (int i = 0; i < viewportCount; i++) {
|
|
lovrGpuSetViewports(&viewports[i][0], 1);
|
|
lovrShaderSetInts(shader, "lovrViewportIndex", &i, 0, 1);
|
|
lovrShaderBind(shader);
|
|
lovrMeshDraw(mesh, draw->instances);
|
|
}
|
|
}
|
|
|
|
if (draw->transform) {
|
|
lovrGraphicsPop();
|
|
}
|
|
}
|
|
|
|
void lovrGraphicsPoints(uint32_t count) {
|
|
lovrGraphicsDraw(&(DrawCommand) {
|
|
.mode = MESH_POINTS,
|
|
.range = { 0, count }
|
|
});
|
|
}
|
|
|
|
void lovrGraphicsLine(uint32_t count) {
|
|
lovrGraphicsDraw(&(DrawCommand) {
|
|
.mode = MESH_LINE_STRIP,
|
|
.range = { 0, count }
|
|
});
|
|
}
|
|
|
|
void lovrGraphicsTriangle(DrawMode mode, Material* material, float points[9]) {
|
|
if (mode == DRAW_MODE_LINE) {
|
|
lovrGraphicsDraw(&(DrawCommand) {
|
|
.material = material,
|
|
.mode = MESH_LINE_LOOP,
|
|
.vertex.count = 3,
|
|
.vertex.data = (float[]) {
|
|
points[0], points[1], points[2], 0, 0, 0, 0, 0,
|
|
points[3], points[4], points[5], 0, 0, 0, 0, 0,
|
|
points[6], points[7], points[8], 0, 0, 0, 0, 0
|
|
}
|
|
});
|
|
} else {
|
|
float normal[3];
|
|
vec3_cross(vec3_init(normal, &points[0]), &points[3]);
|
|
lovrGraphicsDraw(&(DrawCommand) {
|
|
.material = material,
|
|
.mode = MESH_TRIANGLES,
|
|
.vertex.count = 3,
|
|
.vertex.data = (float[]) {
|
|
points[0], points[1], points[2], normal[0], normal[1], normal[2], 0, 0,
|
|
points[3], points[4], points[5], normal[0], normal[1], normal[2], 0, 0,
|
|
points[6], points[7], points[8], normal[0], normal[1], normal[2], 0, 0
|
|
}
|
|
});
|
|
}
|
|
}
|
|
|
|
void lovrGraphicsPlane(DrawMode mode, Material* material, mat4 transform) {
|
|
if (mode == DRAW_MODE_LINE) {
|
|
lovrGraphicsDraw(&(DrawCommand) {
|
|
.transform = transform,
|
|
.material = material,
|
|
.mode = MESH_LINE_LOOP,
|
|
.vertex.count = 4,
|
|
.vertex.data = (float[]) {
|
|
-.5, .5, 0, 0, 0, 0, 0, 0,
|
|
.5, .5, 0, 0, 0, 0, 0, 0,
|
|
.5, -.5, 0, 0, 0, 0, 0, 0,
|
|
-.5, -.5, 0, 0, 0, 0, 0, 0
|
|
}
|
|
});
|
|
} else if (mode == DRAW_MODE_FILL) {
|
|
lovrGraphicsDraw(&(DrawCommand) {
|
|
.transform = transform,
|
|
.material = material,
|
|
.mode = MESH_TRIANGLE_STRIP,
|
|
.vertex.count = 4,
|
|
.vertex.data = (float[]) {
|
|
-.5, .5, 0, 0, 0, -1, 0, 1,
|
|
-.5, -.5, 0, 0, 0, -1, 0, 0,
|
|
.5, .5, 0, 0, 0, -1, 1, 1,
|
|
.5, -.5, 0, 0, 0, -1, 1, 0
|
|
}
|
|
});
|
|
}
|
|
}
|
|
|
|
void lovrGraphicsBox(DrawMode mode, Material* material, mat4 transform) {
|
|
if (mode == DRAW_MODE_LINE) {
|
|
lovrGraphicsDraw(&(DrawCommand) {
|
|
.transform = transform,
|
|
.material = material,
|
|
.mode = MESH_LINES,
|
|
.vertex.count = 8,
|
|
.vertex.data = (float[]) {
|
|
// Front
|
|
-.5, .5, -.5, 0, 0, 0, 0, 0,
|
|
.5, .5, -.5, 0, 0, 0, 0, 0,
|
|
.5, -.5, -.5, 0, 0, 0, 0, 0,
|
|
-.5, -.5, -.5, 0, 0, 0, 0, 0,
|
|
|
|
// Back
|
|
-.5, .5, .5, 0, 0, 0, 0, 0,
|
|
.5, .5, .5, 0, 0, 0, 0, 0,
|
|
.5, -.5, .5, 0, 0, 0, 0, 0,
|
|
-.5, -.5, .5, 0, 0, 0, 0, 0
|
|
},
|
|
.index.count = 24,
|
|
.index.data = (uint16_t[]) {
|
|
0, 1, 1, 2, 2, 3, 3, 0, // Front
|
|
4, 5, 5, 6, 6, 7, 7, 4, // Back
|
|
0, 4, 1, 5, 2, 6, 3, 7 // Connections
|
|
}
|
|
});
|
|
} else {
|
|
lovrGraphicsDraw(&(DrawCommand) {
|
|
.transform = transform,
|
|
.material = material,
|
|
.mode = MESH_TRIANGLE_STRIP,
|
|
.vertex.count = 26,
|
|
.vertex.data = (float[]) {
|
|
// Front
|
|
-.5, -.5, -.5, 0, 0, -1, 0, 0,
|
|
-.5, .5, -.5, 0, 0, -1, 0, 1,
|
|
.5, -.5, -.5, 0, 0, -1, 1, 0,
|
|
.5, .5, -.5, 0, 0, -1, 1, 1,
|
|
|
|
// Right
|
|
.5, .5, -.5, 1, 0, 0, 0, 1,
|
|
.5, .5, .5, 1, 0, 0, 1, 1,
|
|
.5, -.5, -.5, 1, 0, 0, 0, 0,
|
|
.5, -.5, .5, 1, 0, 0, 1, 0,
|
|
|
|
// Back
|
|
.5, -.5, .5, 0, 0, 1, 0, 0,
|
|
.5, .5, .5, 0, 0, 1, 0, 1,
|
|
-.5, -.5, .5, 0, 0, 1, 1, 0,
|
|
-.5, .5, .5, 0, 0, 1, 1, 1,
|
|
|
|
// Left
|
|
-.5, .5, .5, -1, 0, 0, 0, 1,
|
|
-.5, .5, -.5, -1, 0, 0, 1, 1,
|
|
-.5, -.5, .5, -1, 0, 0, 0, 0,
|
|
-.5, -.5, -.5, -1, 0, 0, 1, 0,
|
|
|
|
// Bottom
|
|
-.5, -.5, -.5, 0, -1, 0, 0, 0,
|
|
.5, -.5, -.5, 0, -1, 0, 1, 0,
|
|
-.5, -.5, .5, 0, -1, 0, 0, 1,
|
|
.5, -.5, .5, 0, -1, 0, 1, 1,
|
|
|
|
// Adjust
|
|
.5, -.5, .5, 0, 1, 0, 0, 1,
|
|
-.5, .5, -.5, 0, 1, 0, 0, 1,
|
|
|
|
// Top
|
|
-.5, .5, -.5, 0, 1, 0, 0, 1,
|
|
-.5, .5, .5, 0, 1, 0, 0, 0,
|
|
.5, .5, -.5, 0, 1, 0, 1, 1,
|
|
.5, .5, .5, 0, 1, 0, 1, 0
|
|
}
|
|
});
|
|
}
|
|
}
|
|
|
|
void lovrGraphicsArc(DrawMode mode, ArcMode arcMode, Material* material, mat4 transform, float theta1, float theta2, int segments) {
|
|
if (fabsf(theta1 - theta2) >= 2 * M_PI) {
|
|
theta1 = 0;
|
|
theta2 = 2 * M_PI;
|
|
}
|
|
|
|
bool hasCenterPoint = arcMode == ARC_MODE_PIE && fabsf(theta1 - theta2) < 2 * M_PI;
|
|
uint32_t count = segments + 1 + hasCenterPoint;
|
|
VertexPointer vertices = lovrGraphicsGetVertexPointer(count);
|
|
lovrMeshWriteIndices(state.defaultMesh, 0, 0);
|
|
|
|
if (hasCenterPoint) {
|
|
memcpy(vertices.floats, ((float[]) { 0, 0, 0, 0, 0, 1, .5, .5 }), 8 * sizeof(float));
|
|
vertices.floats += 8;
|
|
}
|
|
|
|
float theta = theta1;
|
|
float angleShift = (theta2 - theta1) / (float) segments;
|
|
|
|
for (int i = 0; i <= segments; i++) {
|
|
float x = cos(theta) * .5;
|
|
float y = sin(theta) * .5;
|
|
memcpy(vertices.floats, ((float[]) { x, y, 0, 0, 0, 1, x + .5, 1 - (y + .5) }), 8 * sizeof(float));
|
|
vertices.floats += 8;
|
|
theta += angleShift;
|
|
}
|
|
|
|
lovrGraphicsDraw(&(DrawCommand) {
|
|
.transform = transform,
|
|
.material = material,
|
|
.mode = mode == DRAW_MODE_LINE ? (arcMode == ARC_MODE_OPEN ? MESH_LINE_STRIP : MESH_LINE_LOOP) : MESH_TRIANGLE_FAN,
|
|
.range = { 0, count }
|
|
});
|
|
}
|
|
|
|
void lovrGraphicsCircle(DrawMode mode, Material* material, mat4 transform, int segments) {
|
|
lovrGraphicsArc(mode, ARC_MODE_OPEN, material, transform, 0, 2 * M_PI, segments);
|
|
}
|
|
|
|
void lovrGraphicsCylinder(Material* material, float x1, float y1, float z1, float x2, float y2, float z2, float r1, float r2, bool capped, int segments) {
|
|
float axis[3] = { x1 - x2, y1 - y2, z1 - z2 };
|
|
float n[3] = { x1 - x2, y1 - y2, z1 - z2 };
|
|
float p[3];
|
|
float q[3];
|
|
|
|
uint32_t vertexCount = ((capped && r1) * (segments + 2) + (capped && r2) * (segments + 2) + 2 * (segments + 1));
|
|
uint32_t indexCount = 3 * segments * ((capped && r1) + (capped && r2) + 2);
|
|
|
|
VertexPointer vertices = lovrGraphicsGetVertexPointer(vertexCount);
|
|
IndexPointer indices = lovrMeshWriteIndices(state.defaultMesh, indexCount, sizeof(uint32_t));
|
|
float* baseVertex = vertices.floats;
|
|
|
|
vec3_init(p, n);
|
|
|
|
if (n[0] == 0 && n[2] == 0) {
|
|
p[0] += 1;
|
|
} else {
|
|
p[1] += 1;
|
|
}
|
|
|
|
vec3_init(q, p);
|
|
vec3_cross(q, n);
|
|
vec3_cross(n, q);
|
|
vec3_init(p, n);
|
|
vec3_normalize(p);
|
|
vec3_normalize(q);
|
|
vec3_normalize(axis);
|
|
|
|
#define PUSH_CYLINDER_VERTEX(x, y, z, nx, ny, nz) \
|
|
*vertices.floats++ = x; \
|
|
*vertices.floats++ = y; \
|
|
*vertices.floats++ = z; \
|
|
*vertices.floats++ = nx; \
|
|
*vertices.floats++ = ny; \
|
|
*vertices.floats++ = nz; \
|
|
*vertices.floats++ = 0; \
|
|
*vertices.floats++ = 0;
|
|
#define PUSH_CYLINDER_TRIANGLE(i1, i2, i3) \
|
|
*indices.ints++ = i1; \
|
|
*indices.ints++ = i2; \
|
|
*indices.ints++ = i3; \
|
|
|
|
// Ring
|
|
for (int i = 0; i <= segments; i++) {
|
|
float theta = i * (2 * M_PI) / segments;
|
|
n[0] = cos(theta) * p[0] + sin(theta) * q[0];
|
|
n[1] = cos(theta) * p[1] + sin(theta) * q[1];
|
|
n[2] = cos(theta) * p[2] + sin(theta) * q[2];
|
|
PUSH_CYLINDER_VERTEX(x1 + r1 * n[0], y1 + r1 * n[1], z1 + r1 * n[2], n[0], n[1], n[2]);
|
|
PUSH_CYLINDER_VERTEX(x2 + r2 * n[0], y2 + r2 * n[1], z2 + r2 * n[2], n[0], n[1], n[2]);
|
|
}
|
|
|
|
// Top
|
|
int topOffset = (segments + 1) * 2;
|
|
if (capped && r1 != 0) {
|
|
PUSH_CYLINDER_VERTEX(x1, y1, z1, axis[0], axis[1], axis[2]);
|
|
for (int i = 0; i <= segments; i++) {
|
|
int j = i * 2 * 8;
|
|
PUSH_CYLINDER_VERTEX(baseVertex[j + 0], baseVertex[j + 1], baseVertex[j + 2], axis[0], axis[1], axis[2]);
|
|
}
|
|
}
|
|
|
|
// Bottom
|
|
int bottomOffset = (segments + 1) * 2 + (1 + segments + 1) * (capped && r1 != 0);
|
|
if (capped && r2 != 0) {
|
|
PUSH_CYLINDER_VERTEX(x2, y2, z1, -axis[0], -axis[1], -axis[2]);
|
|
for (int i = 0; i <= segments; i++) {
|
|
int j = i * 2 * 8 + 8;
|
|
PUSH_CYLINDER_VERTEX(baseVertex[j + 0], baseVertex[j + 1], baseVertex[j + 2], -axis[0], -axis[1], -axis[2]);
|
|
}
|
|
}
|
|
|
|
// Indices
|
|
for (int i = 0; i < segments; i++) {
|
|
int j = 2 * i;
|
|
PUSH_CYLINDER_TRIANGLE(j, j + 1, j + 2);
|
|
PUSH_CYLINDER_TRIANGLE(j + 1, j + 3, j + 2);
|
|
|
|
if (capped && r1 != 0) {
|
|
PUSH_CYLINDER_TRIANGLE(topOffset, topOffset + i + 1, topOffset + i + 2);
|
|
}
|
|
|
|
if (capped && r2 != 0) {
|
|
PUSH_CYLINDER_TRIANGLE(bottomOffset, bottomOffset + i + 1, bottomOffset + i + 2);
|
|
}
|
|
}
|
|
#undef PUSH_CYLINDER_VERTEX
|
|
#undef PUSH_CYLINDER_TRIANGLE
|
|
|
|
lovrGraphicsDraw(&(DrawCommand) {
|
|
.material = material,
|
|
.mode = MESH_TRIANGLES,
|
|
.range = { 0, indexCount }
|
|
});
|
|
}
|
|
|
|
void lovrGraphicsSphere(Material* material, mat4 transform, int segments) {
|
|
VertexPointer vertices = lovrGraphicsGetVertexPointer((segments + 1) * (segments + 1));
|
|
IndexPointer indices = lovrMeshWriteIndices(state.defaultMesh, segments * segments * 6, sizeof(uint32_t));
|
|
|
|
for (int i = 0; i <= segments; i++) {
|
|
float v = i / (float) segments;
|
|
for (int j = 0; j <= segments; j++) {
|
|
float u = j / (float) segments;
|
|
|
|
float x = sin(u * 2 * M_PI) * sin(v * M_PI);
|
|
float y = cos(v * M_PI);
|
|
float z = -cos(u * 2 * M_PI) * sin(v * M_PI);
|
|
memcpy(vertices.floats, ((float[]) { x, y, z, x, y, z, u, 1 - v }), 8 * sizeof(float));
|
|
vertices.floats += 8;
|
|
}
|
|
}
|
|
|
|
for (int i = 0; i < segments; i++) {
|
|
unsigned int offset0 = i * (segments + 1);
|
|
unsigned int offset1 = (i + 1) * (segments + 1);
|
|
for (int j = 0; j < segments; j++) {
|
|
unsigned int i0 = offset0 + j;
|
|
unsigned int i1 = offset1 + j;
|
|
memcpy(indices.ints, ((uint32_t[]) { i0, i1, i0 + 1, i1, i1 + 1, i0 + 1 }), 6 * sizeof(uint32_t));
|
|
indices.ints += 6;
|
|
}
|
|
}
|
|
|
|
lovrGraphicsDraw(&(DrawCommand) {
|
|
.transform = transform,
|
|
.material = material,
|
|
.mode = MESH_TRIANGLES,
|
|
.range = { 0, segments * segments * 6 }
|
|
});
|
|
}
|
|
|
|
void lovrGraphicsSkybox(Texture* texture, float angle, float ax, float ay, float az) {
|
|
TextureType type = lovrTextureGetType(texture);
|
|
lovrAssert(type == TEXTURE_CUBE || type == TEXTURE_2D, "Only 2D and cube textures can be used as skyboxes");
|
|
lovrGraphicsPushPipeline();
|
|
lovrGraphicsSetWinding(WINDING_COUNTERCLOCKWISE);
|
|
lovrGraphicsDraw(&(DrawCommand) {
|
|
.shader = type == TEXTURE_CUBE ? SHADER_CUBE : SHADER_PANO,
|
|
.textures[TEXTURE_DIFFUSE] = type == TEXTURE_2D ? texture : NULL,
|
|
.textures[TEXTURE_ENVIRONMENT_MAP] = type == TEXTURE_CUBE ? texture : NULL,
|
|
.mode = MESH_TRIANGLE_STRIP,
|
|
.vertex.count = 4,
|
|
.vertex.data = (float[]) {
|
|
-1, 1, 1, 0, 0, 0, 0, 0,
|
|
-1, -1, 1, 0, 0, 0, 0, 0,
|
|
1, 1, 1, 0, 0, 0, 0, 0,
|
|
1, -1, 1, 0, 0, 0, 0, 0
|
|
}
|
|
});
|
|
lovrGraphicsPopPipeline();
|
|
}
|
|
|
|
void lovrGraphicsPrint(const char* str, mat4 transform, float wrap, HorizontalAlign halign, VerticalAlign valign) {
|
|
Font* font = lovrGraphicsGetFont();
|
|
float scale = 1 / font->pixelDensity;
|
|
float offsety;
|
|
uint32_t vertexCount;
|
|
uint32_t maxVertices = strlen(str) * 6;
|
|
VertexPointer vertexPointer = lovrGraphicsGetVertexPointer(maxVertices);
|
|
lovrFontRender(font, str, wrap, halign, valign, vertexPointer, &offsety, &vertexCount);
|
|
lovrMeshWriteIndices(state.defaultMesh, 0, 0);
|
|
|
|
lovrGraphicsPush();
|
|
lovrGraphicsMatrixTransform(transform);
|
|
lovrGraphicsScale(scale, scale, scale);
|
|
lovrGraphicsTranslate(0, offsety, 0);
|
|
state.pipelines[state.pipeline].alphaCoverage = true;
|
|
lovrGraphicsDraw(&(DrawCommand) {
|
|
.shader = SHADER_FONT,
|
|
.textures[TEXTURE_DIFFUSE] = font->texture,
|
|
.mode = MESH_TRIANGLES,
|
|
.range = { 0, vertexCount }
|
|
});
|
|
state.pipelines[state.pipeline].alphaCoverage = false;
|
|
lovrGraphicsPop();
|
|
}
|
|
|
|
void lovrGraphicsFill(Texture* texture, float u, float v, float w, float h) {
|
|
lovrGraphicsPushPipeline();
|
|
lovrGraphicsSetDepthTest(COMPARE_NONE, false);
|
|
lovrGraphicsDraw(&(DrawCommand) {
|
|
.forceMono = true,
|
|
.shader = SHADER_FILL,
|
|
.textures[TEXTURE_DIFFUSE] = texture,
|
|
.mode = MESH_TRIANGLE_STRIP,
|
|
.vertex.count = 4,
|
|
.vertex.data = (float[]) {
|
|
-1, 1, 0, 0, 0, 0, u, v + h,
|
|
-1, -1, 0, 0, 0, 0, u, v,
|
|
1, 1, 0, 0, 0, 0, u + w, v + h,
|
|
1, -1, 0, 0, 0, 0, u + w, v
|
|
}
|
|
});
|
|
lovrGraphicsPopPipeline();
|
|
}
|