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Objects: Eevee and workbench rendering of new Volume, Hair, PointCloud

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Only the volume drawing part is really finished and exposed to the user. Hair
plugs into the existing hair rendering code and is fairly straightforward. The
pointcloud drawing is a hack using overlays rather than Eevee and workbench.

The most tricky part for volume rendering is the case where each volume grid
has a different transform, which requires an additional matrix in the shader
and non-trivial logic in Eevee volume drawing. In the common case were all the
transforms match we don't use the additional per-grid matrix in the shader.

Ref T73201, T68981

Differential Revision: https://developer.blender.org/D6955
This commit is contained in:
Brecht Van Lommel
2020-03-17 16:27:08 +01:00
parent b0a1cf2c9a
commit fd53b72871
36 changed files with 1177 additions and 168 deletions
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4
source/blender/gpu/intern/gpu_codegen.c
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@@ -335,6 +335,7 @@ static int codegen_process_uniforms_functions(GPUMaterial *material,
/* Volume Grids */
for (GPUMaterialVolumeGrid *grid = graph->volume_grids.first; grid; grid = grid->next) {
BLI_dynstr_appendf(ds, "uniform sampler3D %s;\n", grid->sampler_name);
BLI_dynstr_appendf(ds, "uniform mat4 %s = mat4(0.0);\n", grid->transform_name);
}
/* Print other uniforms */
@@ -432,6 +433,9 @@ static void codegen_call_functions(DynStr *ds, GPUNodeGraph *graph, GPUOutput *f
else if (input->source == GPU_SOURCE_VOLUME_GRID) {
BLI_dynstr_append(ds, input->volume_grid->sampler_name);
}
else if (input->source == GPU_SOURCE_VOLUME_GRID_TRANSFORM) {
BLI_dynstr_append(ds, input->volume_grid->transform_name);
}
else if (input->source == GPU_SOURCE_OUTPUT) {
codegen_convert_datatype(
ds, input->link->output->type, input->type, "tmp", input->link->output->id);