picky about a few errors. Good thing though, I'm not really sure why clang + osx let me be that lax with memorymaster
MitchellHansen
8 years ago
parent
9c99f9edd0
commit
f487895f9f
@ -1,125 +1,125 @@
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// global : local : constant : private
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// global : local : constant : private
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// Function arguments of type image2d_t, image3d_t, image2d_array_t, image1d_t, image1d_buffer_t,
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// Function arguments of type image2d_t, image3d_t, image2d_array_t, image1d_t, image1d_buffer_t,
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// and image1d_array_t refer to image memory objects allocated in the **global** address space.
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// and image1d_array_t refer to image memory objects allocated in the **global** address space.
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// http://downloads.ti.com/mctools/esd/docs/opencl/memory/buffers.html
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// http://downloads.ti.com/mctools/esd/docs/opencl/memory/buffers.html
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// Open CL C
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// Open CL C
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// https://www.fixstars.com/en/opencl/book/OpenCLProgrammingBook/opencl-c/
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// https://www.fixstars.com/en/opencl/book/OpenCLProgrammingBook/opencl-c/
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__kernel void hello(
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__kernel void hello(
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global int2* resolution,
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global int2* resolution,
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global char* map,
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global char* map,
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global float3* projection_matrix,
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global float3* projection_matrix,
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global float3* cam_dir,
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global float3* cam_dir,
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global float3* cam_pos,
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global float3* cam_pos,
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global image2d_t* canvas) {
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global image2d_t* canvas) {
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printf("%s\n", "this is a test string\n");
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printf("%s\n", "this is a test string\n");
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const int MAX_RAY_STEPS = 64;
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const int MAX_RAY_STEPS = 64;
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// The pixel coord we are at
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// The pixel coord we are at
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int2 screenPos = (int2)(get_global_id(0) % resolution->x, get_global_id(0) / resolution->x);
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int2 screenPos = (int2)(get_global_id(0) % resolution->x, get_global_id(0) / resolution->x);
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// The X and Y planes
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// The X and Y planes
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//float3 cameraPlaneU = vec3(1.0, 0.0, 0.0)
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//float3 cameraPlaneU = vec3(1.0, 0.0, 0.0)
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// Y being multiplied by the aspect ratio, usually around .5-6ish;
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// Y being multiplied by the aspect ratio, usually around .5-6ish;
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//cl_float3 cameraPlaneV = vec3(0.0, 1.0, 0.0) * iResolution.y / iResolution.x;
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//cl_float3 cameraPlaneV = vec3(0.0, 1.0, 0.0) * iResolution.y / iResolution.x;
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// So this is how they do that ray aiming! hah this is so tiny
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// So this is how they do that ray aiming! hah this is so tiny
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// (camera direction) + (pixel.x * the X plane) + (product of pixel.y * Y plane)
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// (camera direction) + (pixel.x * the X plane) + (product of pixel.y * Y plane)
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// Oh all it's doing is adding the x and y coords of the pixel to the camera direction vector, interesting
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// Oh all it's doing is adding the x and y coords of the pixel to the camera direction vector, interesting
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//cl_float3 rayDir = cameraDir + screenPos.x * cameraPlaneU + screenPos.y * cameraPlaneV;
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//cl_float3 rayDir = cameraDir + screenPos.x * cameraPlaneU + screenPos.y * cameraPlaneV;
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// the origin of the ray
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// the origin of the ray
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// So the sign thing is for the up and down motion
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// So the sign thing is for the up and down motion
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//cl_float3 rayPos = vec3(0.0, 2.0 * sin(iGlobalTime * 2.7), -12.0);
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//cl_float3 rayPos = vec3(0.0, 2.0 * sin(iGlobalTime * 2.7), -12.0);
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// Ah, and here is where it spins around the center axis
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// Ah, and here is where it spins around the center axis
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// So it looks like its applying a function to rotate the x and z axis
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// So it looks like its applying a function to rotate the x and z axis
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//rayPos.xz = rotate2d(rayPos.xz, iGlobalTime);
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//rayPos.xz = rotate2d(rayPos.xz, iGlobalTime);
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//rayDir.xz = rotate2d(rayDir.xz, iGlobalTime);
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//rayDir.xz = rotate2d(rayDir.xz, iGlobalTime);
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// Just an intvec of out coords
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// Just an intvec of out coords
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//ivec3 mapPos = ivec3(floor(rayPos));
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//ivec3 mapPos = ivec3(floor(rayPos));
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// I think this is the delta t value
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// I think this is the delta t value
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// the magnitude of the vector divided by the rays direction. Not sure what the aim of that is
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// the magnitude of the vector divided by the rays direction. Not sure what the aim of that is
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// The ray direction might always be normalized, so that would be the dame as my delta_T
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// The ray direction might always be normalized, so that would be the dame as my delta_T
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//vec3 deltaDist = abs(vec3(length(rayDir)) / rayDir);
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//vec3 deltaDist = abs(vec3(length(rayDir)) / rayDir);
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// The steps are the signs of the ray direction
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// The steps are the signs of the ray direction
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//ivec3 rayStep = ivec3(sign(rayDir));
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//ivec3 rayStep = ivec3(sign(rayDir));
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// ithe sign of the rays direction
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// ithe sign of the rays direction
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// *
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// *
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// Convert map position to a floating point vector and take away the ray position
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// Convert map position to a floating point vector and take away the ray position
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// +
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// +
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// the sign of the rays direction by 0.5
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// the sign of the rays direction by 0.5
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// +
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// +
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// 0.5
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// 0.5
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// Now multyply everything by 0.5
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// Now multyply everything by 0.5
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//vec3 sideDist = (sign(rayDir) * (vec3(mapPos) - rayPos) + (sign(rayDir) * 0.5) + 0.5) * deltaDist;
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//vec3 sideDist = (sign(rayDir) * (vec3(mapPos) - rayPos) + (sign(rayDir) * 0.5) + 0.5) * deltaDist;
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// A byte mask
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// A byte mask
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//bvec3 mask;
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//bvec3 mask;
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// repeat until the max steps
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// repeat until the max steps
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//for (int i = 0; i < MAX_RAY_STEPS; i++) {
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//for (int i = 0; i < MAX_RAY_STEPS; i++) {
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// If there is a voxel at the map position, continue?
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// If there is a voxel at the map position, continue?
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//if (getVoxel(mapPos))
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//if (getVoxel(mapPos))
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// break;
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// break;
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//
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//
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// find which is smaller
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// find which is smaller
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// y ? z --> x`
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// y ? z --> x`
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// z ? x --> y`
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// z ? x --> y`
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// x ? y --> z`
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// x ? y --> z`
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//
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//
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// find which os is less or equal
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// find which os is less or equal
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// x` ? x --> x
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// x` ? x --> x
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// y` ? y --> y
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// y` ? y --> y
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// z` ? z --> z
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// z` ? z --> z
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// Now find which ons is
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// Now find which ons is
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//mask = lessThanEqual(sideDist.xyz, min(sideDist.yzx, sideDist.zxy));
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//mask = lessThanEqual(sideDist.xyz, min(sideDist.yzx, sideDist.zxy));
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// Originally he used a component wise
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// Originally he used a component wise
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/*bvec3 b1 = lessThan(sideDist.xyz, sideDist.yzx);
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/*bvec3 b1 = lessThan(sideDist.xyz, sideDist.yzx);
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bvec3 b2 = lessThanEqual(sideDist.xyz, sideDist.zxy);
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bvec3 b2 = lessThanEqual(sideDist.xyz, sideDist.zxy);
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mask.x = b1.x && b2.x;
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mask.x = b1.x && b2.x;
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mask.y = b1.y && b2.y;
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mask.y = b1.y && b2.y;
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mask.z = b1.z && b2.z;*/
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mask.z = b1.z && b2.z;*/
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//Would've done mask = b1 && b2 but the compiler is making me do it component wise.
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//Would've done mask = b1 && b2 but the compiler is making me do it component wise.
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//All components of mask are false except for the corresponding largest component
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//All components of mask are false except for the corresponding largest component
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//of sideDist, which is the axis along which the ray should be incremented.
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//of sideDist, which is the axis along which the ray should be incremented.
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//sideDist += vec3(mask) * deltaDist;
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//sideDist += vec3(mask) * deltaDist;
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//mapPos += ivec3(mask) * rayStep;
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//mapPos += ivec3(mask) * rayStep;
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//}
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//}
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// Ah this is for coloring obviously, seems to be odd though, no indexing
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// Ah this is for coloring obviously, seems to be odd though, no indexing
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//vec4 color;
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//vec4 color;
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//if (mask.x) {
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//if (mask.x) {
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// color = vec4(0.5);
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// color = vec4(0.5);
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//}
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//}
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//if (mask.y) {
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//if (mask.y) {
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// color = vec4(1.0);
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// color = vec4(1.0);
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//}
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//}
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//if (mask.z) {
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//if (mask.z) {
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// color = vec4(0.75);
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// color = vec4(0.75);
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//}
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//}
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//write_imagef(image, pixel, color);
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//write_imagef(image, pixel, color);
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}
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}
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