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Initial import of private code repositories. Terse README.
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‎.gitignore

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*.o
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*.obj
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*.pdb

‎CMakeLists.txt

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cmake_minimum_required (VERSION 2.6)
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project (vermilion9)
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LINK_DIRECTORIES( ${CMAKE_SOURCE_DIR}/lib )
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set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib)
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set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib)
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set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_SOURCE_DIR}/bin)
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# Second, for multi-config builds (e.g. msvc)
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foreach( OUTPUTCONFIG ${CMAKE_CONFIGURATION_TYPES} )
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string( TOUPPER ${OUTPUTCONFIG} OUTPUTCONFIG )
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set( CMAKE_RUNTIME_OUTPUT_DIRECTORY_${OUTPUTCONFIG} ${CMAKE_SOURCE_DIR}/bin )
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set( CMAKE_LIBRARY_OUTPUT_DIRECTORY_${OUTPUTCONFIG} ${CMAKE_SOURCE_DIR}/lib )
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set( CMAKE_ARCHIVE_OUTPUT_DIRECTORY_${OUTPUTCONFIG} ${CMAKE_SOURCE_DIR}/lib )
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endforeach( OUTPUTCONFIG CMAKE_CONFIGURATION_TYPES )
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set (CMAKE_DEBUG_POSTFIX "_d")
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find_package(OpenGL REQUIRED)
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if(WIN32)
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set(COMMON_LIBS vermilion ${OPENGL_LIBRARIES} optimized glfw3 debug glfw3_d)
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elseif (UNIX)
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set(COMMON_LIBS vermilion ${OPENGL_LIBRARIES} glfw ${GLFW_LIBRARIES} GL rt dl)
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else()
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set(COMMON_LIBS vermilion)
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endif()
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set(COMMON_HEADERS include/vgl.h include/vapp.h)
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set(COMMON_LIBS ${COMMON_LIBS} ${EXTRA_LIBS})
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add_library(vermilion
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lib/gl3w.c
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lib/LoadShaders.cpp
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lib/targa.cpp
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lib/vdds.cpp
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lib/loadtexture.cpp
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lib/vermilion.cpp
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lib/vbm.cpp
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)
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set(RUN_DIR ${PROJECT_SOURCE_DIR}/bin)
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set(EXAMPLES
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01-keypress
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01-triangles
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03-drawcommands
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03-instancing
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03-instancing2
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03-instancing3
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03-pointsprites
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03-primitiverestart
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03-xfb
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04-gouraud
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04-gouraud-float
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04-shadowmap
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06-cubemap
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06-load-texture
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06-mipfilters
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06-multitexture
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06-statictexture
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06-texturewrapping
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06-volumetexturing
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08-lightmodels
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09-simpletess
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09-teapot
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10-draw-xfb
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10-fur
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10-viewport-array
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11-doublewrite
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11-oit
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11-overdrawcount
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12-imageprocessing
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12-particlesimulator
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12-raytracer
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12-simplecompute
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)
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find_package(OpenMP)
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if (OPENMP_FOUND)
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set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${OpenMP_C_FLAGS}")
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set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${OpenMP_CXX_FLAGS}")
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endif()
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foreach(EXAMPLE ${EXAMPLES})
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add_executable(${EXAMPLE} WIN32 src/${EXAMPLE}/${EXAMPLE}.cpp ${COMMON_HEADERS})
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set_property(TARGET ${EXAMPLE} PROPERTY DEBUG_POSTFIX _d)
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target_link_libraries(${EXAMPLE} ${COMMON_LIBS})
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if(MSVC)
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configure_file(${PROJECT_SOURCE_DIR}/build/templates/vs2013.vcxproj.user.in ${CMAKE_CURRENT_BINARY_DIR}/${EXAMPLE}.vcxproj.user @ONLY)
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endif(MSVC)
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endforeach(EXAMPLE)
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IF (${CMAKE_SYSTEM_NAME} MATCHES "Linux")
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set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -D_LINUX")
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ENDIF (${CMAKE_SYSTEM_NAME} MATCHES "Linux")
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include_directories( include )
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include_directories(lib/glfw/include)
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add_subdirectory(lib/glfw)
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ADD_CUSTOM_TARGET(debug ${CMAKE_COMMAND} -DCMAKE_BUILD_TYPE:STRING=Debug ${PROJECT_SOURCE_DIR})
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ADD_CUSTOM_TARGET(release ${CMAKE_COMMAND} -DCMAKE_BUILD_TYPE:STRING=Release ${PROJECT_SOURCE_DIR})

‎README.md

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Example code for the OpenGL Programming Guide (Red Book)
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========================================================
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OpenGL Red Book Example Code
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============================
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Coming soon to a repository near you!
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This is the example code for the OpenGL Programming Guide (Red Book), 9th Edition.
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It is mostly an import of code from previous editions with minor updates
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to match some of the descriptions in the latest edition of the book.
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We will be adding more samples and updating existing ones over time.
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Treat this as a live repository. Pull requests and issues are welcome.
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Go forth and fork!
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Building
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--------
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We are using CMake as our build system. To build the samples, enter
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the "build" subdirectory and enter "cmake -G "{your generator here}" .."
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Project files or makefiles will be produced in the build subdirectory.
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We have tested Unix makefiles ("Unix Makefiles") and Visual Studio project files.
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Visual Studio 2013 ("Visual Studio 12") was used to develop most of the samples.
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An update to add support for 2015 will land shortly. Code should compile, but the
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templates for the project files are not in the repository at this time.
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Other compilers and IDEs should work, but we haven't tested them.
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Running
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-------
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Download the media pack from the download area in the repository and unpack it
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into the bin/media directory. This contains model files and textures used by the
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applications. Without this, most applications won't work and will quite possibly
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crash. Don't file bugs about that if you don't have the media files.
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Otherwise, the samples should compile and run out-of-the box. Of course, make sure your
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OpenGL drivers are up to date and that your hardware is capable of running OpenGL 4.5.
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That's what this book is about. Some systems don't support OpenGL 4.5 and will therefore
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not run some of the samples. Trying to run such samples on a machine that doesn't have
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OpenGL 4.5 support will fail. For example, if a platform were limited to, say OpenGL 4.1,
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then the samples wouldn't work on that platform. Please don't file bugs about that either.
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Error checking in these applications is minimal. If you don't have media files or if
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your OpenGL drivers are out of date, they'll probably fail spectacularly.

‎bin/media/shaders/doublewrite/blit.fs.glsl

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#version 430 core
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/*
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* OpenGL Programming Guide - Double Write Example
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*/
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// Buffer containing the rendered image
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layout (binding = 0, rgba32f) uniform image2D output_image;
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// This is the output color
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layout (location = 0) out vec4 color;
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void main(void)
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{
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color = vec4(imageLoad(output_image, ivec2(gl_FragCoord.xy)).xxxx) / 255.0;
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}

‎bin/media/shaders/doublewrite/blit.vs.glsl

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#version 430 core
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in vec4 position;
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void main(void)
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{
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gl_Position = position;
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}

‎bin/media/shaders/doublewrite/double_write.fs.glsl

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#version 430 core
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// Buffer containing a palette of colors to be used to mark primitives by ID
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layout (binding = 0, rgba32f) uniform imageBuffer colors;
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// The buffer that we will write to
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layout (binding = 1, rgba32f) uniform image2D output_buffer;
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out vec4 color;
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void main(void)
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{
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// Load a color from the palette buffer based on primitive ID % 256
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vec4 col = imageLoad(colors, gl_PrimitiveID & 255);
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// Store the resulting fragment at two locations. First at the fragments
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// window space coordinate shifted left...
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imageStore(output_buffer, ivec2(gl_FragCoord.xy) - ivec2(200, 0), col);
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// ... then at the location shifted right
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imageStore(output_buffer, ivec2(gl_FragCoord.xy) + ivec2(200, 0), col);
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}

‎bin/media/shaders/doublewrite/double_write.vs.glsl

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#version 430 core
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layout (location = 0) in vec4 position;
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layout (location = 1) in vec3 normal;
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layout (location = 2) in vec2 map1;
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uniform mat4 model_matrix;
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uniform mat4 view_matrix;
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uniform mat4 projection_matrix;
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uniform float aspect;
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uniform float time;
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out gl_PerVertex
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{
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vec4 gl_Position;
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};
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out vec4 surface_color;
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out vec3 frag_position;
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out vec3 frag_normal;
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void main(void)
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{
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vec4 offset = vec4(float(gl_InstanceID & 3) * 2.0,
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float((gl_InstanceID >> 2) & 3) * 2.0,
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float((gl_InstanceID >> 4) & 3) * 2.0, 0.0) -
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vec4(4.0, 4.0, 4.0, 0.0);
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surface_color = normalize(offset) * 0.5 + vec4(0.5, 0.5, 0.5, 0.4);
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vec4 object_pos = (position + offset);
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vec4 world_pos = model_matrix * object_pos;
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frag_position = world_pos.xyz;
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frag_normal = mat3(model_matrix * view_matrix) * normal;
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gl_Position = (projection_matrix * view_matrix) * world_pos;
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}

‎bin/media/shaders/gouraud/gouraud.frag

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#version 400 core
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in vec4 color;
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out vec4 fColor;
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void
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main()
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{
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fColor = color;
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}

‎bin/media/shaders/gouraud/gouraud.vert

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#version 400 core
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layout( location = 0 ) in vec4 vPosition;
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layout( location = 1 ) in vec4 vColor;
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out vec4 color;
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void
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main()
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{
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color = vColor;
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gl_Position = vPosition;
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}

‎bin/media/shaders/keypress/keypress.frag

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#version 400 core
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out vec4 fColor;
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void
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main()
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{
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fColor = vec4( 0.0, 0.0, 1.0, 1.0 );
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}

‎bin/media/shaders/keypress/keypress.vert

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#version 400 core
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layout( location = 0 ) in vec4 vPosition;
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void
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main()
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{
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gl_Position = vPosition;
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}

‎bin/media/shaders/oit/build_lists.fs.glsl

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#version 420 core
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layout (early_fragment_tests) in;
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layout (binding = 0, r32ui) uniform uimage2D head_pointer_image;
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layout (binding = 1, rgba32ui) uniform writeonly uimageBuffer list_buffer;
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layout (binding = 0, offset = 0) uniform atomic_uint list_counter;
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layout (location = 0) out vec4 color;
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in vec3 frag_position;
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in vec3 frag_normal;
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in vec4 surface_color;
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uniform vec3 light_position = vec3(40.0, 20.0, 100.0);
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void main(void)
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{
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uint index;
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uint old_head;
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uvec4 item;
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vec4 frag_color;
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index = atomicCounterIncrement(list_counter);
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old_head = imageAtomicExchange(head_pointer_image, ivec2(gl_FragCoord.xy), uint(index));
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vec3 L = normalize(light_position - frag_position);
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vec3 V = normalize(-frag_position);
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vec3 N = normalize(frag_normal);
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vec3 H = normalize(L + V);
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float NdotL = dot(N, L);
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float NdotH = dot(N, H);
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vec4 modulator = vec4(surface_color.rgb * abs(NdotL), surface_color.a);
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vec4 additive_component = mix(surface_color, vec4(1.0), 0.6) * vec4(pow(clamp(NdotH, 0.0, 1.0), 26.0)) * 0.7;
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item.x = old_head;
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item.y = packUnorm4x8(modulator);
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item.z = floatBitsToUint(gl_FragCoord.z);
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item.w = packUnorm4x8(additive_component);
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imageStore(list_buffer, int(index), item);
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frag_color = modulator;
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color = frag_color;
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}

‎bin/media/shaders/oit/build_lists.vs.glsl

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#version 330
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layout (location = 0) in vec4 position;
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layout (location = 1) in vec3 normal;
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layout (location = 2) in vec2 map1;
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uniform mat4 model_matrix;
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uniform mat4 view_matrix;
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uniform mat4 projection_matrix;
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uniform float aspect;
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uniform float time;
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out gl_PerVertex
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{
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vec4 gl_Position;
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};
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out vec4 surface_color;
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out vec3 frag_position;
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out vec3 frag_normal;
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void main(void)
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{
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vec4 offset = vec4(float(gl_InstanceID & 7) * 2.0,
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float((gl_InstanceID >> 3) & 7) * 2.0,
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float((gl_InstanceID >> 6) & 7) * 2.0, 0.0) -
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vec4(8.0, 8.0, 8.0, 0.0);
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surface_color = normalize(offset) * 0.5 + vec4(0.5, 0.5, 0.5, 0.4);
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vec4 object_pos = (position + offset);
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vec4 world_pos = model_matrix * object_pos;
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frag_position = world_pos.xyz;
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frag_normal = mat3(model_matrix * view_matrix) * normal;
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gl_Position = (projection_matrix * view_matrix) * world_pos;
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}

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