140 lines
3.7 KiB
C++
140 lines
3.7 KiB
C++
/*
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* Copyright 2016 - 2021 gary@drinkingtea.net
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*/
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#include <ox/std/fmt.hpp>
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#define GL_SILENCE_DEPRECATION
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#include <array>
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#include <ox/std/defines.hpp>
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#include <ox/std/defines.hpp>
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#define GL_GLEXT_PROTOTYPES 1
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//#include <GLES2/gl2.h>
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#ifdef OX_OS_Darwin
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#include <OpenGL/gl.h>
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#else
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#include <GL/gl.h>
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#endif
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#include <nostalgia/core/gfx.hpp>
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namespace nostalgia::core {
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using TileMap = std::array<std::array<int, 128>, 128>;
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struct GlImplData {
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std::array<TileMap, 4> bgTileMaps{};
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std::array<GLuint, 4> bgTextures{};
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int64_t prevFpsCheckTime = 0;
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uint64_t draws = 0;
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};
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namespace renderer {
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ox::Error init(Context *ctx) {
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const auto id = new GlImplData;
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ctx->setRendererData(id);
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return OxError(0);
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}
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ox::Error shutdown(Context *ctx) {
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const auto id = ctx->rendererData<GlImplData>();
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ctx->setRendererData(nullptr);
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delete id;
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return OxError(0);
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}
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ox::Error loadTexture(Context *ctx, int section, void *pixels, int w, int h) {
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oxTracef("nostalgia::core::gfx::gl", "loadTexture: { section: {}, w: {}, h: {} }", section, w, h);
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const auto &id = ctx->rendererData<GlImplData>();
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auto &texId = id->bgTextures[static_cast<std::size_t>(section)];
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glGenTextures(1, &texId);
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glActiveTexture(GL_TEXTURE0);
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glBindTexture(GL_TEXTURE_2D, texId);
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glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, w, h, 0, GL_RGBA, GL_UNSIGNED_BYTE, pixels);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
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return OxError(0);
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}
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}
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void draw(Context *ctx) {
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const auto id = ctx->rendererData<GlImplData>();
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++id->draws;
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if (id->draws >= 5000) {
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using namespace std::chrono;
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const auto now = duration_cast<milliseconds>(system_clock::now().time_since_epoch()).count();
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const auto duration = static_cast<double>(now - id->prevFpsCheckTime) / 1000.0;
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const auto fps = static_cast<int>(static_cast<double>(id->draws) / duration);
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#ifdef NOST_FPS_PRINT
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std::cout << "FPS: " << fps << '\n';
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#endif
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oxTracef("nostalgia::core::gfx::gl::fps", "FPS: {}", fps);
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id->prevFpsCheckTime = now;
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id->draws = 0;
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}
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glClearColor(0, 0, 0, 1);
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glClear(GL_COLOR_BUFFER_BIT);
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auto &texId = id->bgTextures[0];
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glEnable(GL_TEXTURE_2D);
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glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
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glBindTexture(GL_TEXTURE_2D, texId);
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// Draw a textured quad
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glBegin(GL_QUADS);
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glTexCoord2f(0, 0); glVertex2f(-0.01, 1);
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glTexCoord2f(0, 1); glVertex2f(-0.01, -1);
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glTexCoord2f(1, 1); glVertex2f( 0.01, -1);
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glTexCoord2f(1, 0); glVertex2f( 0.01, 1);
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glEnd();
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glDisable(GL_TEXTURE_2D);
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for (std::size_t i = 0; i < id->bgTileMaps.size(); i++) {
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}
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}
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void puts(Context *ctx, int column, int row, const char *str) {
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for (int i = 0; str[i]; ++i) {
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setTile(ctx, 0, column + i, row, static_cast<uint8_t>(charMap[static_cast<int>(str[i])]));
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}
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}
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void clearTileLayer(Context*, int) {
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}
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void hideSprite(Context*, unsigned) {
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}
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void setSprite(Context*,
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unsigned,
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unsigned,
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unsigned,
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unsigned,
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unsigned,
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unsigned,
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unsigned) {
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}
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void setTile(Context *ctx, int layer, int column, int row, uint8_t tile) {
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const auto id = ctx->rendererData<GlImplData>();
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const auto z = static_cast<unsigned>(layer);
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const auto y = static_cast<unsigned>(row);
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const auto x = static_cast<unsigned>(column);
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id->bgTileMaps[z][y][x] = tile;
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}
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}
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