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Update ios example for API changes and index rendering
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@ -157,7 +157,7 @@ static bool g_synergyPtrActive = false;
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static uint16_t g_mousePosX = 0;
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static uint16_t g_mousePosX = 0;
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static uint16_t g_mousePosY = 0;
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static uint16_t g_mousePosY = 0;
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static void ImGui_ImplIOS_RenderDrawLists (ImDrawList** const cmd_lists, int cmd_lists_count);
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static void ImGui_ImplIOS_RenderDrawLists (ImDrawData *draw_data);
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bool ImGui_ImplIOS_CreateDeviceObjects();
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bool ImGui_ImplIOS_CreateDeviceObjects();
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static NSString *g_serverName;
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static NSString *g_serverName;
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@ -611,9 +611,9 @@ void ImGui_ClipboardCallback(uSynergyCookie cookie, enum uSynergyClipboardFormat
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// If text or lines are blurry when integrating ImGui in your engine:
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// If text or lines are blurry when integrating ImGui in your engine:
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// - in your Render function, try translating your projection matrix by (0.5f,0.5f) or (0.375f,0.375f)
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// - in your Render function, try translating your projection matrix by (0.5f,0.5f) or (0.375f,0.375f)
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// NOTE: this is copied pretty much entirely from the opengl3_example, with only minor changes for ES
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// NOTE: this is copied pretty much entirely from the opengl3_example, with only minor changes for ES
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static void ImGui_ImplIOS_RenderDrawLists (ImDrawList** const cmd_lists, int cmd_lists_count)
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static void ImGui_ImplIOS_RenderDrawLists (ImDrawData *draw_data)
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{
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{
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if (cmd_lists_count == 0)
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if (draw_data->CmdListsCount == 0)
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return;
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return;
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// Setup render state: alpha-blending enabled, no face culling, no depth testing, scissor enabled
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// Setup render state: alpha-blending enabled, no face culling, no depth testing, scissor enabled
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@ -644,55 +644,64 @@ static void ImGui_ImplIOS_RenderDrawLists (ImDrawList** const cmd_lists, int cmd
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glUniformMatrix4fv(g_AttribLocationProjMtx, 1, GL_FALSE, &ortho_projection[0][0]);
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glUniformMatrix4fv(g_AttribLocationProjMtx, 1, GL_FALSE, &ortho_projection[0][0]);
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// Grow our buffer according to what we need
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// Grow our buffer according to what we need
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size_t total_vtx_count = 0;
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for (int n = 0; n < cmd_lists_count; n++)
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total_vtx_count += cmd_lists[n]->vtx_buffer.size();
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glBindBuffer(GL_ARRAY_BUFFER, g_VboHandle);
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glBindBuffer(GL_ARRAY_BUFFER, g_VboHandle);
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size_t needed_vtx_size = total_vtx_count * sizeof(ImDrawVert);
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int needed_vtx_size = draw_data->TotalVtxCount * sizeof(ImDrawVert);
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if (g_VboSize < needed_vtx_size)
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if (g_VboSize < needed_vtx_size)
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{
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{
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g_VboSize = needed_vtx_size + 5000 * sizeof(ImDrawVert); // Grow buffer
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g_VboSize = needed_vtx_size + 5000 * sizeof(ImDrawVert); // Grow buffer
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glBufferData(GL_ARRAY_BUFFER, g_VboSize, NULL, GL_STREAM_DRAW);
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glBufferData(GL_ARRAY_BUFFER, (GLsizeiptr)g_VboSize, NULL, GL_STREAM_DRAW);
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}
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}
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// Copy and convert all vertices into a single contiguous buffer
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// Copy and convert all vertices into a single contiguous buffer
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unsigned char* buffer_data = (unsigned char*)glMapBufferRange(GL_ARRAY_BUFFER, 0, g_VboSize, GL_MAP_WRITE_BIT);
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unsigned char* buffer_data = (unsigned char*)glMapBufferRange(GL_ARRAY_BUFFER, 0, g_VboSize, GL_MAP_WRITE_BIT);
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if (!buffer_data)
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if (!buffer_data)
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return;
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return;
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for (int n = 0; n < cmd_lists_count; n++)
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for (int n = 0; n < draw_data->CmdListsCount; n++)
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{
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{
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const ImDrawList* cmd_list = cmd_lists[n];
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const ImDrawList* cmd_list = draw_data->CmdLists[n];
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memcpy(buffer_data, &cmd_list->vtx_buffer[0], cmd_list->vtx_buffer.size() * sizeof(ImDrawVert));
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memcpy(buffer_data, &cmd_list->VtxBuffer[0], cmd_list->VtxBuffer.size() * sizeof(ImDrawVert));
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buffer_data += cmd_list->vtx_buffer.size() * sizeof(ImDrawVert);
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buffer_data += cmd_list->VtxBuffer.size() * sizeof(ImDrawVert);
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}
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}
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glUnmapBuffer(GL_ARRAY_BUFFER);
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glUnmapBuffer(GL_ARRAY_BUFFER);
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glBindBuffer(GL_ARRAY_BUFFER, 0);
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glBindBuffer(GL_ARRAY_BUFFER, 0);
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glBindVertexArray(g_VaoHandle);
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glBindVertexArray(g_VaoHandle);
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int cmd_offset = 0;
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int vtx_offset = 0;
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for (int n = 0; n < cmd_lists_count; n++)
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for (int n = 0; n < draw_data->CmdListsCount; n++)
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{
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{
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const ImDrawList* cmd_list = cmd_lists[n];
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ImDrawList* cmd_list = draw_data->CmdLists[n];
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int vtx_offset = cmd_offset;
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ImDrawIdx* idx_buffer = &cmd_list->IdxBuffer.front();
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const ImDrawCmd* pcmd_end = cmd_list->commands.end();
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for (const ImDrawCmd* pcmd = cmd_list->commands.begin(); pcmd != pcmd_end; pcmd++)
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// OpenGL ES doesn't support glDrawElementsBaseVertex, so
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// we have to modify the index buffer to add the base vertex
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// index for each command.
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for (ImDrawIdx *idx = cmd_list->IdxBuffer.begin();
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idx != cmd_list->IdxBuffer.end(); idx++)
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{
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{
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if (pcmd->user_callback)
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(*idx) += vtx_offset;
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}
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const ImDrawCmd* pcmd_end = cmd_list->CmdBuffer.end();
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for (const ImDrawCmd* pcmd = cmd_list->CmdBuffer.begin(); pcmd != pcmd_end; pcmd++)
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{
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if (pcmd->UserCallback)
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{
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{
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pcmd->user_callback(cmd_list, pcmd);
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pcmd->UserCallback(cmd_list, pcmd);
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}
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}
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else
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else
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{
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{
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glBindTexture(GL_TEXTURE_2D, (GLuint)(intptr_t)pcmd->texture_id);
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glBindTexture(GL_TEXTURE_2D, (GLuint)(intptr_t)pcmd->TextureId);
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glScissor((int)(pcmd->clip_rect.x * g_displayScale),
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glScissor((int)(pcmd->ClipRect.x * g_displayScale),
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(int)((height - pcmd->clip_rect.w) * g_displayScale),
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(int)((height - pcmd->ClipRect.w) * g_displayScale),
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(int)((pcmd->clip_rect.z - pcmd->clip_rect.x) * g_displayScale),
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(int)((pcmd->ClipRect.z - pcmd->ClipRect.x) * g_displayScale),
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(int)((pcmd->clip_rect.w - pcmd->clip_rect.y) * g_displayScale));
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(int)((pcmd->ClipRect.w - pcmd->ClipRect.y) * g_displayScale));
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glDrawArrays(GL_TRIANGLES, vtx_offset, pcmd->vtx_count);
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glDrawElements( GL_TRIANGLES, (GLsizei)pcmd->ElemCount, GL_UNSIGNED_SHORT, idx_buffer );
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}
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}
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vtx_offset += pcmd->vtx_count;
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idx_buffer += pcmd->ElemCount;
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}
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}
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cmd_offset = vtx_offset;
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vtx_offset += cmd_list->VtxBuffer.size();
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}
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}
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// Restore modified state
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// Restore modified state
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