#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);
-
+
+ m_debug_font_atlas = 0;
+
ResizeViewport(800, 600);
+ Clear();
+ Present();
+
+
}
Screen::~Screen()
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;
void Screen::Present()
{
+ if (m_debug_font_atlas)
+ DebugFontFlush();
SDL_GL_SwapWindow(m_window);
}
if (pixels == NULL)
Fatal("Failed to allocate %d x %d x 4 = %d pixel array", w, h, w*h*4);
- glReadPixels(0,0,w, h, GL_RGBA, GL_UNSIGNED_BYTE, pixels);
+ for (int y = 0; y < h; ++y)
+ {
+ glReadPixels(0,h-y-1,w, 1, GL_RGBA, GL_UNSIGNED_BYTE, &pixels[y*w*4]);
+ }
- 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());
+ GLenum texture_format = (surf->format->Rmask == 0x000000FF) ? GL_RGBA : GL_BGRA;
+ Debug("SDL_Surface %d BytesPerPixel, format %d (RGB = %d, BGR = %d, RGBA = %d, BGRA = %d)", surf->format->BytesPerPixel, texture_format, GL_RGB, GL_BGR, GL_RGBA, GL_BGRA);
+
if (SDL_SaveBMP(surf, filename) != 0)
Fatal("SDL_SaveBMP failed - %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());
Fatal("Could not understand SDL_Surface format (%d colours)", bmp->format->BytesPerPixel);
break;
}
- Debug("SDL_Surface %d BytesPerPixel, format %d (RGB = %d, BGR = %d, RGBA = %d, BGRA = %d)", bmp->format->BytesPerPixel, texture_format, GL_RGB, GL_BGR, GL_RGBA, GL_BGRA);
+ //Debug("SDL_Surface %d BytesPerPixel, format %d (RGB = %d, BGR = %d, RGBA = %d, BGRA = %d)", bmp->format->BytesPerPixel, texture_format, GL_RGB, GL_BGR, GL_RGBA, GL_BGRA);
- GLuint texID;
+ GLuint texID;
+ glEnable(GL_TEXTURE_2D);
glGenTextures(1, &texID);
glBindTexture(GL_TEXTURE_2D, texID);
+
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
+
glTexImage2D(GL_TEXTURE_2D, 0, bmp->format->BytesPerPixel, w, h, 0, texture_format, GL_UNSIGNED_BYTE, bmp->pixels);
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
- glEnable(GL_TEXTURE_2D);
- glBindTexture(GL_TEXTURE_2D, texID);
+ glMatrixMode(GL_PROJECTION);
+ glLoadIdentity();
+ glOrtho(0.0, 1.0, 1.0, 0.0, -1.f, 1.f);
+ glMatrixMode(GL_MODELVIEW);
+ glLoadIdentity();
glBegin(GL_QUADS);
- glTexCoord2i(0,0); glVertex2f(-0.5f*w, -0.5f*h);
- glTexCoord2i(1,0); glVertex2f(0.5f*w, -0.5f*h);
- glTexCoord2i(1,1); glVertex2f(0.5f*w, 0.5f*h);
- glTexCoord2i(0,1); glVertex2f(-0.5*w,0.5*h);
+ glTexCoord2i(0,0); glVertex2f(0,0);
+ glTexCoord2i(1,0); glVertex2f(1,0);
+ glTexCoord2i(1,1); glVertex2f(1,1);
+ glTexCoord2i(0,1); glVertex2f(0,1);
glEnd();
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;
+
+ m_debug_font_vertices.SetUsage(GraphicsBuffer::BufferUsageStreamDraw);
+ m_debug_font_vertices.SetType(GraphicsBuffer::BufferTypeVertex);
+ m_debug_font_vertices.Upload(8192, nullptr);
+ m_debug_font_vertex_head = 0;
+}
+
+void Screen::DebugFontClear()
+{
+ m_debug_font_x = m_debug_font_y = 0;
+ if (!m_debug_font_atlas) return;
+ DebugFontPrint("\n");
+}
+
+void Screen::DebugFontFlush()
+{
+ glBindFramebuffer(GL_FRAMEBUFFER, 0);
+ glMatrixMode(GL_PROJECTION);
+ glPushMatrix();
+ glLoadIdentity();
+ glOrtho(0,ViewportWidth(), ViewportHeight(), 0, -1, 1);
+ glMatrixMode(GL_MODELVIEW);
+ glPushMatrix();
+ glLoadIdentity();
+
+ glColor4f(0,0,0,1);
+
+
+ glEnable(GL_TEXTURE_2D);
+ glEnable(GL_BLEND);
+ glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+ glBindTexture(GL_TEXTURE_2D, m_debug_font_atlas);
+
+ m_debug_font_vertices.Bind();
+ glEnableClientState(GL_VERTEX_ARRAY);
+ glEnableClientState(GL_TEXTURE_COORD_ARRAY);
+ glVertexPointer(2, GL_FLOAT, 4*sizeof(float), (void*)(2*sizeof(float)));
+ glTexCoordPointer(2, GL_FLOAT, 4*sizeof(float), 0);
+ glDrawArrays(GL_QUADS, 0, m_debug_font_vertex_head/4);
+ glDisableClientState(GL_VERTEX_ARRAY);
+ glDisableClientState(GL_TEXTURE_COORD_ARRAY);
+
+ glDisable(GL_BLEND);
+ glDisable(GL_TEXTURE_2D);
+ glPopMatrix();
+ glMatrixMode(GL_PROJECTION);
+ glPopMatrix();
+
+ m_debug_font_vertex_head = 0;
+}
- //SDL_FreeSurface(bmp);
+void Screen::DebugFontPrint(const char* str)
+{
+ if (!m_debug_font_atlas) return;
+
+ float *vertexData = (float*)m_debug_font_vertices.MapRange(m_debug_font_vertex_head*sizeof(float), m_debug_font_vertices.GetSize() - m_debug_font_vertex_head*sizeof(float), false, true, true);
+ while (*str) {
+ if (m_debug_font_vertex_head*sizeof(float) + 16*sizeof(float) >= m_debug_font_vertices.GetSize() )
+ {
+ m_debug_font_vertices.UnMap();
+ DebugFontFlush();
+ DebugFontPrint(str);
+ return;
+ }
+ 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);
+ *vertexData = q.s0; vertexData++;
+ *vertexData = q.t0; vertexData++;
+ *vertexData = q.x0; vertexData++;
+ *vertexData = q.y0; vertexData++;
+ *vertexData = q.s1; vertexData++;
+ *vertexData = q.t0; vertexData++;
+ *vertexData = q.x1; vertexData++;
+ *vertexData = q.y0; vertexData++;
+ *vertexData = q.s1; vertexData++;
+ *vertexData = q.t1; vertexData++;
+ *vertexData = q.x1; vertexData++;
+ *vertexData = q.y1; vertexData++;
+ *vertexData = q.s0; vertexData++;
+ *vertexData = q.t1; vertexData++;
+ *vertexData = q.x0; vertexData++;
+ *vertexData = q.y1; vertexData++;
+
+ m_debug_font_vertex_head += 16;
+
+ }
+ else if (*str == '\n')
+ {
+ m_debug_font_x = 0;
+ m_debug_font_y += m_debug_font_size;
+ }
+ ++str;
+ }
+ m_debug_font_vertices.UnMap();
+ //DebugFontFlush();
+}
+
+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);
}
git.ucc.asn.au / ipdf / code.git / blobdiff
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