#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();
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);
}
unsigned char * pixels = new unsigned char[w*h*4];
if (pixels == NULL)
Fatal("Failed to allocate %d x %d x 4 = %d pixel array", w, h, w*h*4);
- glReadBuffer(GL_FRONT);
- glPixelStorei(GL_PACK_ALIGNMENT, 1);
+
for (int y = 0; y < h; ++y)
{
glReadPixels(0,h-y-1,w, 1, GL_RGBA, GL_UNSIGNED_BYTE, &pixels[y*w*4]);
*/
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());
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::DebugFontPrint(const char* str)
+void Screen::DebugFontFlush()
{
+ glBindFramebuffer(GL_FRAMEBUFFER, 0);
glMatrixMode(GL_PROJECTION);
glPushMatrix();
glLoadIdentity();
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);
- glBegin(GL_QUADS);
+
+ 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;
+}
+
+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);
- 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);
+ *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')
{
}
++str;
}
- glEnd();
- glDisable(GL_BLEND);
- glDisable(GL_TEXTURE_2D);
- glPopMatrix();
- glMatrixMode(GL_MODELVIEW);
- glPopMatrix();
+ m_debug_font_vertices.UnMap();
+ //DebugFontFlush();
}
void Screen::DebugFontPrintF(const char *fmt, ...)