X-Git-Url: https://git.ucc.asn.au/?p=ipdf%2Fcode.git;a=blobdiff_plain;f=src%2Fobjectrenderer.cpp;h=f5202cb591d04dfa754dac4f4efee9985718bf19;hp=ac25c4ac04ef96d33b926396b3bee57d104cfe8a;hb=8e97d741cf713296c96b53f4ebb1615e8d443391;hpb=00ef152dc3a065e37fe45c1cd8023d739f518b8e

diff --git a/src/objectrenderer.cpp b/src/objectrenderer.cpp
index ac25c4a..f5202cb 100644
--- a/src/objectrenderer.cpp
+++ b/src/objectrenderer.cpp
@@ -29,20 +29,23 @@ ObjectRenderer::ObjectRenderer(const ObjectType & type,
 /**
  * Render using GPU
  */
-void ObjectRenderer::RenderUsingGPU()
+void ObjectRenderer::RenderUsingGPU(unsigned first_obj_id, unsigned last_obj_id)
 {
-	if (!m_shader_program.Valid())
-		Warn("Shader is invalid (objects are of type %d)", m_type);
+	unsigned first_index = 0;
+	while (m_indexes[first_index] < first_obj_id) first_index ++;
+	unsigned last_index = first_index;
+	while (m_indexes[last_index] < last_obj_id) last_index ++;
+
 	m_shader_program.Use();
 	m_ibo.Bind();
-	glDrawElements(GL_LINES, m_indexes.size()*2, GL_UNSIGNED_INT, 0);
+	glDrawElements(GL_LINES, (last_index-first_index)*2, GL_UNSIGNED_INT, (GLvoid*)(first_index*sizeof(uint32_t)));
 }
 
 
 /**
  * Default implementation for rendering using CPU
  */
-void ObjectRenderer::RenderUsingCPU(const Objects & objects, const View & view, const CPURenderTarget & target)
+void ObjectRenderer::RenderUsingCPU(const Objects & objects, const View & view, const CPURenderTarget & target, unsigned first_obj_id, unsigned last_obj_id)
 {
 	Error("Cannot render objects of type %d on CPU", m_type);
 	//TODO: Render a rect or something instead?
@@ -107,10 +110,12 @@ void ObjectRenderer::FinaliseBuffers()
 /**
  * Rectangle (filled)
  */
-void RectFilledRenderer::RenderUsingCPU(const Objects & objects, const View & view, const CPURenderTarget & target)
+void RectFilledRenderer::RenderUsingCPU(const Objects & objects, const View & view, const CPURenderTarget & target, unsigned first_obj_id, unsigned last_obj_id)
 {
 	for (unsigned i = 0; i < m_indexes.size(); ++i)
 	{
+		if (m_indexes[i] < first_obj_id) continue;
+		if (m_indexes[i] >= last_obj_id) continue;
 		PixelBounds bounds(CPURenderBounds(objects.bounds[m_indexes[i]], view, target));
 		for (int64_t x = max(0L, bounds.x); x <= min(bounds.x+bounds.w, target.w-1); ++x)
 		{
@@ -129,11 +134,13 @@ void RectFilledRenderer::RenderUsingCPU(const Objects & objects, const View & vi
 /**
  * Rectangle (outine)
  */
-void RectOutlineRenderer::RenderUsingCPU(const Objects & objects, const View & view, const CPURenderTarget & target)
+void RectOutlineRenderer::RenderUsingCPU(const Objects & objects, const View & view, const CPURenderTarget & target, unsigned first_obj_id, unsigned last_obj_id)
 {
 	//Debug("Render %u outlined rectangles on CPU", m_indexes.size());
 	for (unsigned i = 0; i < m_indexes.size(); ++i)
 	{
+		if (m_indexes[i] < first_obj_id) continue;
+		if (m_indexes[i] >= last_obj_id) continue;
 		PixelBounds bounds(CPURenderBounds(objects.bounds[m_indexes[i]], view, target));
 		
 		// Using bresenham's lines now mainly because I want to see if they work
@@ -155,10 +162,12 @@ void RectOutlineRenderer::RenderUsingCPU(const Objects & objects, const View & v
 /**
  * Circle (filled)
  */
-void CircleFilledRenderer::RenderUsingCPU(const Objects & objects, const View & view, const CPURenderTarget & target)
+void CircleFilledRenderer::RenderUsingCPU(const Objects & objects, const View & view, const CPURenderTarget & target, unsigned first_obj_id, unsigned last_obj_id)
 {
 	for (unsigned i = 0; i < m_indexes.size(); ++i)
 	{
+		if (m_indexes[i] < first_obj_id) continue;
+		if (m_indexes[i] >= last_obj_id) continue;
 		PixelBounds bounds(CPURenderBounds(objects.bounds[m_indexes[i]], view, target));
 		int64_t centre_x = bounds.x + bounds.w / 2;
 		int64_t centre_y = bounds.y + bounds.h / 2;
@@ -202,11 +211,13 @@ Rect ObjectRenderer::CPURenderBounds(const Rect & bounds, const View & view, con
  * Bezier curve
  * Not sure how to apply De'Casteljau, will just use a bunch of Bresnham lines for now.
  */
-void BezierRenderer::RenderUsingCPU(const Objects & objects, const View & view, const CPURenderTarget & target)
+void BezierRenderer::RenderUsingCPU(const Objects & objects, const View & view, const CPURenderTarget & target, unsigned first_obj_id, unsigned last_obj_id)
 {
 	//Warn("Rendering Beziers on CPU. Things may explode.");
 	for (unsigned i = 0; i < m_indexes.size(); ++i)
 	{
+		if (m_indexes[i] < first_obj_id) continue;
+		if (m_indexes[i] >= last_obj_id) continue;
 		Rect bounds(CPURenderBounds(objects.bounds[m_indexes[i]], view, target));
 		PixelBounds pix_bounds(bounds);
 
@@ -288,15 +299,21 @@ void BezierRenderer::PrepareBezierGPUBuffer(const Objects& objects)
 	glActiveTexture(GL_TEXTURE0);
 }
 
-void BezierRenderer::RenderUsingGPU()
+void BezierRenderer::RenderUsingGPU(unsigned first_obj_id, unsigned last_obj_id)
 {
 	if (!m_shader_program.Valid())
 		Warn("Shader is invalid (objects are of type %d)", m_type);
+
+	unsigned first_index = 0;
+	while (m_indexes[first_index] < first_obj_id) first_index ++;
+	unsigned last_index = first_index;
+	while (m_indexes[last_index] < last_obj_id) last_index ++;
+
 	m_shader_program.Use();
 	glUniform1i(m_shader_program.GetUniformLocation("bezier_buffer_texture"), 0);
 	glUniform1i(m_shader_program.GetUniformLocation("bezier_id_buffer_texture"), 1);
 	m_ibo.Bind();
-	glDrawElements(GL_LINES, m_indexes.size()*2, GL_UNSIGNED_INT, 0);
+	glDrawElements(GL_LINES, (last_index-first_index)*2, GL_UNSIGNED_INT, (GLvoid*)(first_index*sizeof(uint32_t)));
 }
 
 /**