mirror of
https://github.com/libretro/ppsspp.git
synced 2024-11-26 09:50:29 +00:00
425 lines
11 KiB
C++
425 lines
11 KiB
C++
// Copyright (c) 2012- PPSSPP Project.
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, version 2.0 or later versions.
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License 2.0 for more details.
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// A copy of the GPL 2.0 should have been included with the program.
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// If not, see http://www.gnu.org/licenses/
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// Official git repository and contact information can be found at
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// https://github.com/hrydgard/ppsspp and http://www.ppsspp.org/.
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#include <WindowsX.h>
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#include "math/lin/matrix4x4.h"
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#include "gfx_es2/glsl_program.h"
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#include "Common/Common.h"
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#include "Windows/GEDebugger/SimpleGLWindow.h"
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const PTCHAR SimpleGLWindow::windowClass = _T("SimpleGLWindow");
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void SimpleGLWindow::RegisterClass() {
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WNDCLASSEX wndClass;
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wndClass.cbSize = sizeof(wndClass);
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wndClass.lpszClassName = windowClass;
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wndClass.hInstance = GetModuleHandle(0);
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wndClass.lpfnWndProc = WndProc;
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wndClass.hCursor = LoadCursor(NULL, IDC_ARROW);
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wndClass.hIcon = 0;
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wndClass.lpszMenuName = 0;
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wndClass.hbrBackground = (HBRUSH)GetSysColorBrush(COLOR_WINDOW);
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wndClass.style = CS_DBLCLKS;
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wndClass.cbClsExtra = 0;
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wndClass.cbWndExtra = sizeof(SimpleGLWindow *);
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wndClass.hIconSm = 0;
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RegisterClassEx(&wndClass);
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}
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static const char tex_fs[] =
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"#ifdef GL_ES\n"
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"precision mediump float;\n"
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"#endif\n"
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"uniform sampler2D sampler0;\n"
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"varying vec2 v_texcoord0;\n"
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"void main() {\n"
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" gl_FragColor = texture2D(sampler0, v_texcoord0);\n"
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" gl_FragColor.a = clamp(gl_FragColor.a, 0.2, 1.0);\n"
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"}\n";
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static const char basic_vs[] =
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#ifndef USING_GLES2
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"#version 120\n"
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#endif
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"attribute vec4 a_position;\n"
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"attribute vec2 a_texcoord0;\n"
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"uniform mat4 u_viewproj;\n"
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"varying vec2 v_texcoord0;\n"
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"void main() {\n"
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" v_texcoord0 = a_texcoord0;\n"
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" gl_Position = u_viewproj * a_position;\n"
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"}\n";
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SimpleGLWindow::SimpleGLWindow(HWND wnd)
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: hWnd_(wnd), valid_(false), drawProgram_(NULL), tex_(0), flags_(0), zoom_(false),
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dragging_(false), offsetX_(0), offsetY_(0) {
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SetWindowLongPtr(wnd, GWLP_USERDATA, (LONG) this);
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}
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SimpleGLWindow::~SimpleGLWindow() {
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if (drawProgram_ != NULL) {
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glsl_destroy(drawProgram_);
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}
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if (tex_) {
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glDeleteTextures(1, &tex_);
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glDeleteTextures(1, &checker_);
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}
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};
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void SimpleGLWindow::Initialize(u32 flags) {
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RECT rect;
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GetWindowRect(hWnd_, &rect);
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SetFlags(flags);
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SetupGL();
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ResizeGL(rect.right-rect.left,rect.bottom-rect.top);
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CreateProgram();
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GenerateChecker();
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}
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void SimpleGLWindow::SetupGL() {
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int pixelFormat;
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static PIXELFORMATDESCRIPTOR pfd = {0};
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pfd.nSize = sizeof(pfd);
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pfd.nVersion = 1;
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pfd.dwFlags = PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL | PFD_DOUBLEBUFFER;
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pfd.iPixelType = PFD_TYPE_RGBA;
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pfd.cColorBits = 32;
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pfd.cDepthBits = 16;
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pfd.iLayerType = PFD_MAIN_PLANE;
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#define ENFORCE(x, msg) { if (!(x)) { ERROR_LOG(COMMON, "SimpleGLWindow: %s (%08x)", msg, GetLastError()); return; } }
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ENFORCE(hDC_ = GetDC(hWnd_), "Unable to create DC.");
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ENFORCE(pixelFormat = ChoosePixelFormat(hDC_, &pfd), "Unable to match pixel format.");
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ENFORCE(SetPixelFormat(hDC_, pixelFormat, &pfd), "Unable to set pixel format.");
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ENFORCE(hGLRC_ = wglCreateContext(hDC_), "Unable to create GL context.");
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ENFORCE(wglMakeCurrent(hDC_, hGLRC_), "Unable to activate GL context.");
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glewInit();
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valid_ = true;
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}
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void SimpleGLWindow::ResizeGL(int w, int h) {
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if (!valid_) {
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return;
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}
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wglMakeCurrent(hDC_, hGLRC_);
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glViewport(0, 0, w, h);
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glScissor(0, 0, w, h);
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glMatrixMode(GL_PROJECTION);
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glLoadIdentity();
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glOrtho(0.0f, w, h, 0.0f, -1.0f, 1.0f);
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glMatrixMode(GL_MODELVIEW);
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glLoadIdentity();
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w_ = w;
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h_ = h;
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}
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void SimpleGLWindow::CreateProgram() {
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if (!valid_) {
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return;
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}
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wglMakeCurrent(hDC_, hGLRC_);
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drawProgram_ = glsl_create_source(basic_vs, tex_fs);
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glGenTextures(1, &tex_);
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glGenTextures(1, &checker_);
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glsl_bind(drawProgram_);
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glUniform1i(drawProgram_->sampler0, 0);
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glsl_unbind();
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glEnableVertexAttribArray(drawProgram_->a_position);
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glEnableVertexAttribArray(drawProgram_->a_texcoord0);
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}
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void SimpleGLWindow::GenerateChecker() {
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if (!valid_) {
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return;
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}
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const static u8 checkerboard[] = {
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255,255,255,255, 195,195,195,255,
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195,195,195,255, 255,255,255,255,
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};
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wglMakeCurrent(hDC_, hGLRC_);
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glPixelStorei(GL_UNPACK_ALIGNMENT, 4);
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glBindTexture(GL_TEXTURE_2D, checker_);
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glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, 2, 2, 0, GL_RGBA, GL_UNSIGNED_BYTE, checkerboard);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
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}
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void SimpleGLWindow::DrawChecker() {
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wglMakeCurrent(hDC_, hGLRC_);
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glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
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glClear(GL_COLOR_BUFFER_BIT);
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glBindTexture(GL_TEXTURE_2D, checker_);
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glDisable(GL_BLEND);
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glViewport(0, 0, w_, h_);
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glScissor(0, 0, w_, h_);
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glsl_bind(drawProgram_);
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float fw = (float)w_, fh = (float)h_;
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const float pos[12] = {0,0,0, fw,0,0, fw,fh,0, 0,fh,0};
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const float texCoords[8] = {0,fh/22, fw/22,fh/22, fw/22,0, 0,0};
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const GLubyte indices[4] = {0,1,3,2};
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Matrix4x4 ortho;
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ortho.setOrtho(0, (float)w_, (float)h_, 0, -1, 1);
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glUniformMatrix4fv(drawProgram_->u_viewproj, 1, GL_FALSE, ortho.getReadPtr());
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glVertexAttribPointer(drawProgram_->a_position, 3, GL_FLOAT, GL_FALSE, 12, pos);
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glVertexAttribPointer(drawProgram_->a_texcoord0, 2, GL_FLOAT, GL_FALSE, 8, texCoords);
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glActiveTexture(GL_TEXTURE0);
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glDrawElements(GL_TRIANGLE_STRIP, 4, GL_UNSIGNED_BYTE, indices);
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}
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void SimpleGLWindow::Draw(u8 *data, int w, int h, bool flipped, Format fmt) {
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wglMakeCurrent(hDC_, hGLRC_);
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GLint components = GL_RGBA;
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GLenum glfmt;
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if (fmt == FORMAT_8888) {
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glPixelStorei(GL_UNPACK_ALIGNMENT, 4);
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glfmt = GL_UNSIGNED_BYTE;
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} else if (fmt == FORMAT_FLOAT) {
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glfmt = GL_FLOAT;
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components = GL_RED;
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} else {
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glPixelStorei(GL_UNPACK_ALIGNMENT, 2);
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if (fmt == FORMAT_4444) {
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glfmt = GL_UNSIGNED_SHORT_4_4_4_4;
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} else if (fmt == FORMAT_5551) {
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glfmt = GL_UNSIGNED_SHORT_5_5_5_1;
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} else if (fmt == FORMAT_565) {
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glfmt = GL_UNSIGNED_SHORT_5_6_5;
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components = GL_RGB;
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} else if (fmt == FORMAT_16BIT) {
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glfmt = GL_UNSIGNED_SHORT;
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components = GL_RED;
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} else if (fmt == FORMAT_8BIT) {
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glfmt = GL_UNSIGNED_BYTE;
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components = GL_RED;
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} else {
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_dbg_assert_msg_(COMMON, false, "Invalid SimpleGLWindow format.");
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}
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}
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glBindTexture(GL_TEXTURE_2D, tex_);
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glTexImage2D(GL_TEXTURE_2D, 0, components, w, h, 0, components, glfmt, data);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
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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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// Reset offset when the texture size changes.
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if (tw_ != w || th_ != h) {
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tw_ = w;
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th_ = h;
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offsetX_ = 0;
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offsetY_ = 0;
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}
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tflipped_ = flipped;
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Redraw();
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}
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void SimpleGLWindow::Redraw() {
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DrawChecker();
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if (tw_ == 0 && th_ == 0) {
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Swap();
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return;
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}
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if (flags_ & ALPHA_BLEND) {
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glEnable(GL_BLEND);
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glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
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glBlendEquation(GL_FUNC_ADD);
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} else {
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glDisable(GL_BLEND);
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}
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glViewport(0, 0, w_, h_);
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glScissor(0, 0, w_, h_);
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glBindTexture(GL_TEXTURE_2D, tex_);
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glsl_bind(drawProgram_);
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float fw = (float)tw_, fh = (float)th_;
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float x = 0.0f, y = 0.0f;
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if (flags_ & (RESIZE_SHRINK_FIT | RESIZE_CENTER) && !zoom_) {
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float wscale = fw / w_, hscale = fh / h_;
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// Too wide, and width is the biggest problem, so scale based on that.
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if (wscale > 1.0f && wscale > hscale) {
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fw = (float)w_;
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fh /= wscale;
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} else if (hscale > 1.0f) {
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fw /= hscale;
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fh = (float)h_;
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}
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}
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if (flags_ & RESIZE_CENTER) {
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x = ((float)w_ - fw) / 2;
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y = ((float)h_ - fh) / 2;
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}
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x += offsetX_;
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y += offsetY_;
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const float pos[12] = {x,y,0, x+fw,y,0, x+fw,y+fh,0, x,y+fh,0};
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static const float texCoords[8] = {0,0, 1,0, 1,1, 0,1};
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static const float texCoordsFlipped[8] = {0,1, 1,1, 1,0, 0,0};
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static const GLubyte indices[4] = {0,1,3,2};
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Matrix4x4 ortho;
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ortho.setOrtho(0, (float)w_, (float)h_, 0, -1, 1);
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glUniformMatrix4fv(drawProgram_->u_viewproj, 1, GL_FALSE, ortho.getReadPtr());
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glVertexAttribPointer(drawProgram_->a_position, 3, GL_FLOAT, GL_FALSE, 12, pos);
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glVertexAttribPointer(drawProgram_->a_texcoord0, 2, GL_FLOAT, GL_FALSE, 8, tflipped_ ? texCoordsFlipped : texCoords);
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glActiveTexture(GL_TEXTURE0);
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glDrawElements(GL_TRIANGLE_STRIP, 4, GL_UNSIGNED_BYTE, indices);
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Swap();
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}
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void SimpleGLWindow::Clear() {
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tw_ = 0;
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th_ = 0;
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Redraw();
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}
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bool SimpleGLWindow::DragStart(int mouseX, int mouseY) {
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// Only while zoomed in, otherwise it's shrink to fit mode or fixed.
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if (!zoom_) {
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return false;
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}
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dragging_ = true;
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SetCapture(hWnd_);
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dragStartX_ = mouseX - offsetX_;
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dragStartY_ = mouseY - offsetY_;
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dragLastUpdate_ = GetTickCount();
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return true;
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}
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bool SimpleGLWindow::DragContinue(int mouseX, int mouseY) {
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if (!dragging_) {
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return false;
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}
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offsetX_ = mouseX - dragStartX_;
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offsetY_ = mouseY - dragStartY_;
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const u32 MS_BETWEEN_DRAG_REDRAWS = 5;
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if (GetTickCount() - dragLastUpdate_ > MS_BETWEEN_DRAG_REDRAWS) {
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Redraw();
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}
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return true;
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}
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bool SimpleGLWindow::DragEnd(int mouseX, int mouseY) {
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if (!dragging_) {
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return false;
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}
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dragging_ = false;
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ReleaseCapture();
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Redraw();
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return true;
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}
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bool SimpleGLWindow::ToggleZoom() {
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// Reset the offset when zooming out (or in, doesn't matter.)
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offsetX_ = 0;
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offsetY_ = 0;
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zoom_ = !zoom_;
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Redraw();
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return true;
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}
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SimpleGLWindow *SimpleGLWindow::GetFrom(HWND hwnd) {
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return (SimpleGLWindow*) GetWindowLongPtr(hwnd, GWLP_USERDATA);
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}
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LRESULT CALLBACK SimpleGLWindow::WndProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam) {
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SimpleGLWindow *win = SimpleGLWindow::GetFrom(hwnd);
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switch(msg)
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{
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case WM_NCCREATE:
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win = new SimpleGLWindow(hwnd);
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// Continue with window creation.
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return win != NULL ? TRUE : FALSE;
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case WM_NCDESTROY:
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delete win;
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return 0;
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case WM_LBUTTONDBLCLK:
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if (win->ToggleZoom()) {
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return 0;
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}
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break;
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case WM_LBUTTONDOWN:
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if (win->DragStart(GET_X_LPARAM(lParam), GET_Y_LPARAM(lParam))) {
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return 0;
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}
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break;
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case WM_LBUTTONUP:
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if (win->DragEnd(GET_X_LPARAM(lParam), GET_Y_LPARAM(lParam))) {
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return 0;
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}
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break;
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case WM_MOUSEMOVE:
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if (win->DragContinue(GET_X_LPARAM(lParam), GET_Y_LPARAM(lParam))) {
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return 0;
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}
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break;
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case WM_PAINT:
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win->Redraw();
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break;
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}
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return DefWindowProc(hwnd, msg, wParam, lParam);
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} |