#include "screen.h"
#include "SDL_opengl.h"
+#include <fcntl.h> // for access(2)
+#include <unistd.h> // for access(2)
using namespace IPDF;
using namespace std;
m_gl_context = SDL_GL_CreateContext(m_window);
- glClearColor(1.f,1.f,1.f,1.f);
- glClear(GL_COLOR_BUFFER_BIT);
+ ResizeViewport(800, 600);
+
+ Clear();
Present();
- ResizeViewport(800, 600);
}
SDL_Quit();
}
+void Screen::Clear(float r, float g, float b, float a)
+{
+ glClearColor(r,g,b,a);
+ glClear(GL_COLOR_BUFFER_BIT);
+ DebugFontClear();
+}
+
void Screen::ResizeViewport(int width, int height)
{
glViewport(0, 0, width, height);
m_last_mouse_y = evt.button.y;
if (m_mouse_handler)
{
- m_mouse_handler(evt.button.x, evt.button.y, evt.button.state, 0);
+ m_mouse_handler(evt.button.x, evt.button.y, evt.button.state?evt.button.button:0, 0);
}
break;
case SDL_MOUSEWHEEL:
filename[0] = (char)evt.key.keysym.sym;
ScreenShot(filename);
}
+ break;
}
default:
break;
if (pixels == NULL)
Fatal("Failed to allocate %d x %d x 4 = %d pixel array", w, h, w*h*4);
+ for (int y = 0; y < h; ++y)
+ {
+ glReadPixels(0,h-y-1,w, 1, GL_RGBA, GL_UNSIGNED_BYTE, &pixels[y*w*4]);
+ }
- glReadBuffer(GL_FRONT);
- glPixelStorei(GL_PACK_ALIGNMENT, 1);
-
- glReadPixels(0,0,w, h, GL_BGRA, GL_UNSIGNED_BYTE, pixels);
-
- SDL_Surface * surf = SDL_CreateRGBSurfaceFrom(pixels, w, h, 8*4, w*4, 0,0,0,0);
+#if SDL_BYTEORDER == SDL_LIL_ENDIAN
+ SDL_Surface * surf = SDL_CreateRGBSurfaceFrom(pixels, w, h, 8*4, w*4, 0x000000ff,0x0000ff00,0x00ff0000,0xff000000);
+#else
+ SDL_Surface * surf = SDL_CreateRGBSurfaceFrom(pixels, w, h, 8*4, w*4, 0xff000000,0x00ff0000,0x0000ff00,0x000000ff);
+#endif
if (surf == NULL)
Fatal("Failed to create SDL_Surface from pixel data - %s", SDL_GetError());
*/
void Screen::RenderBMP(const char * filename) const
{
+ if (access(filename, R_OK) == -1)
+ {
+ Error("No such file \"%s\" - Nothing to render - You might have done this deliberately?", filename);
+ return;
+ }
SDL_Surface * bmp = SDL_LoadBMP(filename);
if (bmp == NULL)
Fatal("Failed to load BMP from %s - %s", filename, SDL_GetError());
glDisable(GL_TEXTURE_2D);
SDL_FreeSurface(bmp);
}
+
+void Screen::DebugFontInit(const char *name, float font_size)
+{
+ unsigned char font_atlas_data[1024*1024];
+ FILE *font_file = fopen(name, "rb");
+ fseek(font_file, 0, SEEK_END);
+ size_t font_file_size = ftell(font_file);
+ fseek(font_file, 0, SEEK_SET);
+ unsigned char *font_file_data = (unsigned char*)malloc(font_file_size);
+ fread(font_file_data, 1, font_file_size, font_file);
+ fclose(font_file);
+ stbtt_BakeFontBitmap(font_file_data,0, font_size, font_atlas_data,1024,1024, 32,96, m_debug_font_rects);
+ free(font_file_data);
+ glGenTextures(1, &m_debug_font_atlas);
+ glBindTexture(GL_TEXTURE_2D, m_debug_font_atlas);
+ glTexImage2D(GL_TEXTURE_2D, 0, GL_ALPHA, 1024,1024, 0, GL_ALPHA, GL_UNSIGNED_BYTE, font_atlas_data);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+ m_debug_font_size = font_size;
+}
+
+void Screen::DebugFontClear()
+{
+ m_debug_font_x = m_debug_font_y = 0;
+ DebugFontPrint("\n");
+}
+
+void Screen::DebugFontPrint(const char* str)
+{
+ glMatrixMode(GL_PROJECTION);
+ glPushMatrix();
+ glLoadIdentity();
+ glOrtho(0,ViewportWidth(), ViewportHeight(), 0, -1, 1);
+ glMatrixMode(GL_MODELVIEW);
+ glPushMatrix();
+ glLoadIdentity();
+
+
+
+ glEnable(GL_TEXTURE_2D);
+ glEnable(GL_BLEND);
+ glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+ glBindTexture(GL_TEXTURE_2D, m_debug_font_atlas);
+ glBegin(GL_QUADS);
+ while (*str) {
+ if (*str >= 32 && *str < 128) {
+ stbtt_aligned_quad q;
+ stbtt_GetBakedQuad(m_debug_font_rects, 1024,1024, *str-32, &m_debug_font_x,&m_debug_font_y,&q,1);
+ glTexCoord2f(q.s0,q.t0); glVertex2f(q.x0,q.y0);
+ glTexCoord2f(q.s1,q.t0); glVertex2f(q.x1,q.y0);
+ glTexCoord2f(q.s1,q.t1); glVertex2f(q.x1,q.y1);
+ glTexCoord2f(q.s0,q.t1); glVertex2f(q.x0,q.y1);
+ }
+ else if (*str == '\n')
+ {
+ m_debug_font_x = 0;
+ m_debug_font_y += m_debug_font_size;
+ }
+ ++str;
+ }
+ glEnd();
+ glDisable(GL_BLEND);
+ glDisable(GL_TEXTURE_2D);
+ glPopMatrix();
+ glMatrixMode(GL_PROJECTION);
+ glPopMatrix();
+}
+
+void Screen::DebugFontPrintF(const char *fmt, ...)
+{
+ char buffer[BUFSIZ];
+ va_list va;
+ va_start(va, fmt);
+ vsnprintf(buffer, BUFSIZ, fmt,va);
+ va_end(va);
+ DebugFontPrint(buffer);
+}