X-Git-Url: https://git.ucc.asn.au/?p=ipdf%2Fcode.git;a=blobdiff_plain;f=src%2Fscreen.cpp;h=ecc8c203af836c0510e92529d77f15fa7c8d319f;hp=7d43e418086a5cf23a7db5a4f3b531c578da5fa7;hb=eff96d65bd1101083e04cb3ff2468b3feea3ff9e;hpb=e164c93218ed4599614f4f6e5e815429a3fedbf7;ds=sidebyside

diff --git a/src/screen.cpp b/src/screen.cpp
index 7d43e41..ecc8c20 100644
--- a/src/screen.cpp
+++ b/src/screen.cpp
@@ -21,6 +21,8 @@ Screen::Screen()
 
 	m_gl_context = SDL_GL_CreateContext(m_window);
 
+	m_debug_font_atlas = 0;
+
 	ResizeViewport(800, 600);
 
 	Clear();
@@ -40,6 +42,7 @@ 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)
@@ -83,7 +86,7 @@ bool Screen::PumpEvents()
 			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:
@@ -101,6 +104,7 @@ bool Screen::PumpEvents()
 				filename[0] = (char)evt.key.keysym.sym;
 				ScreenShot(filename);
 			}
+			break;
 		}
 		default:
 			break;
@@ -128,6 +132,8 @@ void Screen::SetMouseCursor(Screen::MouseCursors cursor)
 
 void Screen::Present()
 {
+	if (m_debug_font_atlas)
+		DebugFontFlush();
 	SDL_GL_SwapWindow(m_window);
 }
 
@@ -141,7 +147,6 @@ void Screen::ScreenShot(const char * filename) const
 	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]);
@@ -229,3 +234,128 @@ void Screen::RenderBMP(const char * filename) const
 	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;
+}
+
+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);
+}