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Support instanced rendering
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@RobDangerous
RobDangerous committed Sep 21, 2024
1 parent 0473aec commit 9e81e1e
Showing 1 changed file with 50 additions and 40 deletions.
90 changes: 50 additions & 40 deletions Sources/integrations/kope.c
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Original file line number Diff line number Diff line change
Expand Up @@ -514,7 +514,8 @@ void kope_export(char *directory, api_kind api) {
}
}

type_id vertex_inputs[256];
type_id vertex_inputs[256] = {0};
size_t vertex_input_slots[256] = {0};
size_t vertex_inputs_size = 0;

for (type_id i = 0; get_type(i) != NULL; ++i) {
Expand All @@ -540,22 +541,20 @@ void kope_export(char *directory, api_kind api) {
check(vertex_shader_name != NO_NAME || mesh_shader_name != NO_NAME, context, "No vertex or mesh shader name found");

if (vertex_shader_name != NO_NAME) {

type_id vertex_input = NO_TYPE;

for (function_id i = 0; get_function(i) != NULL; ++i) {
function *f = get_function(i);
if (f->name == vertex_shader_name) {
check(f->parameters_size > 0, context, "Vertex function requires at least one parameter");
vertex_input = f->parameter_types[0].type;

for (size_t input_index = 0; input_index < f->parameters_size; ++input_index) {
vertex_inputs[vertex_inputs_size] = f->parameter_types[input_index].type;
vertex_input_slots[vertex_inputs_size] = input_index;
vertex_inputs_size += 1;
}

break;
}
}

check(vertex_input != NO_TYPE, context, "No vertex input found");

vertex_inputs[vertex_inputs_size] = vertex_input;
vertex_inputs_size += 1;
}
}
}
Expand Down Expand Up @@ -827,8 +826,9 @@ void kope_export(char *directory, api_kind api) {
fprintf(output, "}\n\n");

fprintf(output, "void kong_set_vertex_buffer_%s(kope_g5_command_list *list, %s_buffer *buffer) {\n", get_name(t->name), get_name(t->name));
fprintf(output, "\tkope_d3d12_command_list_set_vertex_buffer(list, 0, &buffer->buffer.d3d12, 0, buffer->count * sizeof(%s), sizeof(%s));\n",
get_name(t->name), get_name(t->name));
fprintf(output,
"\tkope_d3d12_command_list_set_vertex_buffer(list, %" PRIu64 ", &buffer->buffer.d3d12, 0, buffer->count * sizeof(%s), sizeof(%s));\n",
vertex_input_slots[i], get_name(t->name), get_name(t->name));
fprintf(output, "}\n\n");
}

Expand Down Expand Up @@ -1188,7 +1188,9 @@ void kope_export(char *directory, api_kind api) {
function *vertex_function = NULL;
function *fragment_function = NULL;

type_id vertex_input = NO_TYPE;
type_id vertex_inputs[64] = {0};
bool instanced[64] = {0};
size_t vertex_inputs_count = 0;

if (vertex_shader_name != NO_NAME) {
for (function_id i = 0; get_function(i) != NULL; ++i) {
Expand All @@ -1197,7 +1199,13 @@ void kope_export(char *directory, api_kind api) {
vertex_function = f;
debug_context context = {0};
check(f->parameters_size > 0, context, "Vertex function requires at least one parameter");
vertex_input = f->parameter_types[0].type;
for (size_t input_index = 0; input_index < f->parameters_size; ++input_index) {
vertex_inputs[input_index] = f->parameter_types[input_index].type;
if (f->parameter_attributes[input_index] == add_name("per_instance")) {
instanced[input_index] = true;
}
}
vertex_inputs_count = f->parameters_size;
break;
}
}
Expand All @@ -1215,39 +1223,41 @@ void kope_export(char *directory, api_kind api) {
debug_context context = {0};
check(vertex_shader_name == NO_NAME || vertex_function != NULL, context, "Vertex function not found");
check(fragment_function != NULL, context, "Fragment function not found");
check(vertex_function == NULL || vertex_input != NO_TYPE, context, "No vertex input found");
check(vertex_function == NULL || (vertex_inputs_count > 0 && vertex_inputs[0] != NO_TYPE), context, "No vertex input found");
}

if (vertex_function != NULL) {
for (type_id i = 0; get_type(i) != NULL; ++i) {
if (i == vertex_input) {
type *vertex_type = get_type(i);
size_t offset = 0;

for (size_t j = 0; j < vertex_type->members.size; ++j) {
if (api == API_OPENGL) {
fprintf(output, "\tkinc_g4_vertex_structure_add(&%s_structure, \"%s_%s\", %s);\n", get_name(t->name),
get_name(vertex_type->name), get_name(vertex_type->members.m[j].name),
structure_type(vertex_type->members.m[j].type.type));
}
else {
fprintf(output, "\t%s_parameters.vertex.buffers[0].attributes[%" PRIu64 "].format = %s;\n", get_name(t->name), j,
structure_type(vertex_type->members.m[j].type.type));
fprintf(output, "\t%s_parameters.vertex.buffers[0].attributes[%" PRIu64 "].offset = %" PRIu64 ";\n", get_name(t->name), j,
offset);
fprintf(output, "\t%s_parameters.vertex.buffers[0].attributes[%" PRIu64 "].shader_location = %" PRIu64 ";\n",
get_name(t->name), j, j);
}
size_t location = 0;

offset += base_type_size(vertex_type->members.m[j].type.type);
for (size_t input_index = 0; input_index < vertex_inputs_count; ++input_index) {
type *vertex_type = get_type(vertex_inputs[input_index]);
size_t offset = 0;

for (size_t j = 0; j < vertex_type->members.size; ++j) {
if (api == API_OPENGL) {
fprintf(output, "\tkinc_g4_vertex_structure_add(&%s_structure, \"%s_%s\", %s);\n", get_name(t->name),
get_name(vertex_type->name), get_name(vertex_type->members.m[j].name),
structure_type(vertex_type->members.m[j].type.type));
}
else {
fprintf(output, "\t%s_parameters.vertex.buffers[%" PRIu64 "].attributes[%" PRIu64 "].format = %s;\n", get_name(t->name),
input_index, j, structure_type(vertex_type->members.m[j].type.type));
fprintf(output, "\t%s_parameters.vertex.buffers[%" PRIu64 "].attributes[%" PRIu64 "].offset = %" PRIu64 ";\n",
get_name(t->name), input_index, j, offset);
fprintf(output, "\t%s_parameters.vertex.buffers[%" PRIu64 "].attributes[%" PRIu64 "].shader_location = %" PRIu64 ";\n",
get_name(t->name), input_index, j, location);
}
fprintf(output, "\t%s_parameters.vertex.buffers[0].attributes_count = %" PRIu64 ";\n", get_name(t->name),
vertex_type->members.size);
fprintf(output, "\t%s_parameters.vertex.buffers[0].array_stride = %" PRIu64 ";\n", get_name(t->name), offset);
fprintf(output, "\t%s_parameters.vertex.buffers[0].step_mode = KOPE_D3D12_VERTEX_STEP_MODE_VERTEX;\n", get_name(t->name));
fprintf(output, "\t%s_parameters.vertex.buffers_count = 1;\n\n", get_name(t->name));

offset += base_type_size(vertex_type->members.m[j].type.type);
location += 1;
}
fprintf(output, "\t%s_parameters.vertex.buffers[%" PRIu64 "].attributes_count = %" PRIu64 ";\n", get_name(t->name), input_index,
vertex_type->members.size);
fprintf(output, "\t%s_parameters.vertex.buffers[%" PRIu64 "].array_stride = %" PRIu64 ";\n", get_name(t->name), input_index, offset);
fprintf(output, "\t%s_parameters.vertex.buffers[%" PRIu64 "].step_mode = %s;\n", get_name(t->name), input_index,
instanced[input_index] ? "KOPE_D3D12_VERTEX_STEP_MODE_INSTANCE" : "KOPE_D3D12_VERTEX_STEP_MODE_VERTEX");
}
fprintf(output, "\t%s_parameters.vertex.buffers_count = %" PRIu64 ";\n\n", get_name(t->name), vertex_inputs_count);
}

fprintf(output, "\t%s_parameters.primitive.topology = KOPE_D3D12_PRIMITIVE_TOPOLOGY_TRIANGLE_LIST;\n", get_name(t->name));
Expand Down

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