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[Feat] (multidraw): use ES functions directly in compute variant

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This commit is contained in:
Swung0x48 2025-04-20 23:34:34 +08:00
parent 9c953d8296
commit cd47992b41
2 changed files with 34 additions and 34 deletions
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2
src/main/cpp/gl/log.h
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@ -8,7 +8,7 @@
#define FORCE_SYNC_WITH_LOG_FILE 0
#define GLOBAL_DEBUG 1
#define GLOBAL_DEBUG 0
#define LOG_CALLED_FUNCS 0

66
src/main/cpp/gl/multidraw.cpp
View File

@ -247,7 +247,7 @@ void mg_glMultiDrawElements_basevertex(GLenum mode, const GLsizei *count, GLenum
const std::string multidraw_comp_shader =
R"(#version 310 es
layout(local_size_x = 256) in;
layout(local_size_x = 64) in;
struct DrawCommand {
uint count;
@ -269,24 +269,24 @@ void main() {
out_indices[globalIdx] = globalIdx;
// bisect to find out draw call #
// int low = 0;
// int high = draws.length() - 1;
// while(low < high) {
// int mid = (low + high + 1) / 2;
// if (prefixSums[mid] <= globalIdx) {
// low = mid;
// } else {
// high = mid - 1;
// }
// }
//
// // figure out which index to take
// DrawCommand cmd = draws[low];
// uint localIdx = globalIdx - prefixSums[low];
// uint srcIndex = cmd.firstIndex + localIdx;
//
// // Write out
// out_indices[globalIdx] = uint(int(in_indices[srcIndex]) + cmd.baseVertex);
int low = 0;
int high = draws.length() - 1;
while(low < high) {
int mid = (low + high + 1) / 2;
if (prefixSums[mid] <= globalIdx) {
low = mid;
} else {
high = mid - 1;
}
}
// figure out which index to take
DrawCommand cmd = draws[low];
uint localIdx = globalIdx - prefixSums[low];
uint srcIndex = cmd.firstIndex + localIdx;
// Write out
out_indices[globalIdx] = uint(int(in_indices[srcIndex]) + cmd.baseVertex);
}
)";
@ -314,8 +314,8 @@ GLAPI GLAPIENTRY void mg_glMultiDrawElementsBaseVertex_compute(
// Init compute buffers
if (!g_compute_inited) {
LOG_D("Initializing multidraw compute pipeline...")
glGenBuffers(1, &g_prefixsumbuffer);
glGenBuffers(1, &g_outputibo);
GLES.glGenBuffers(1, &g_prefixsumbuffer);
GLES.glGenBuffers(1, &g_outputibo);
g_compute_program = GLES.glCreateProgram();
CHECK_GL_ERROR_NO_INIT
@ -375,25 +375,25 @@ GLAPI GLAPIENTRY void mg_glMultiDrawElementsBaseVertex_compute(
}
// Fill in the data
glBindBuffer(GL_SHADER_STORAGE_BUFFER, g_prefixsumbuffer);
GLES.glBindBuffer(GL_SHADER_STORAGE_BUFFER, g_prefixsumbuffer);
CHECK_GL_ERROR_NO_INIT
glBufferData(GL_SHADER_STORAGE_BUFFER, sizeof(GLuint) * primcount, g_prefix_sum.data(), GL_DYNAMIC_DRAW);
GLES.glBufferData(GL_SHADER_STORAGE_BUFFER, sizeof(GLuint) * primcount, g_prefix_sum.data(), GL_DYNAMIC_DRAW);
CHECK_GL_ERROR_NO_INIT
glBindBuffer(GL_SHADER_STORAGE_BUFFER, 0);
GLES.glBindBuffer(GL_SHADER_STORAGE_BUFFER, 0);
CHECK_GL_ERROR_NO_INIT
GLint ibo = 0;
glGetIntegerv(GL_ELEMENT_ARRAY_BUFFER_BINDING, &ibo);
GLES.glGetIntegerv(GL_ELEMENT_ARRAY_BUFFER_BINDING, &ibo);
CHECK_GL_ERROR_NO_INIT
// Bind buffers
glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 0, ibo);
GLES.glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 0, ibo);
CHECK_GL_ERROR_NO_INIT
glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 1, g_indirectbuffer);
GLES.glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 1, g_indirectbuffer);
CHECK_GL_ERROR_NO_INIT
glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 2, g_prefixsumbuffer);
GLES.glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 2, g_prefixsumbuffer);
CHECK_GL_ERROR_NO_INIT
glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 3, g_outputibo);
GLES.glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 3, g_outputibo);
CHECK_GL_ERROR_NO_INIT
// Dispatch compute
@ -402,7 +402,7 @@ GLAPI GLAPIENTRY void mg_glMultiDrawElementsBaseVertex_compute(
CHECK_GL_ERROR_NO_INIT
GLuint total_indices = g_prefix_sum[primcount - 1];
LOG_D("Dispatch compute")
GLES.glDispatchCompute((total_indices + 255) / 256, 1, 1);
GLES.glDispatchCompute((total_indices + 63) / 64, 1, 1);
CHECK_GL_ERROR_NO_INIT
// Wait for compute to complete
@ -412,11 +412,11 @@ GLAPI GLAPIENTRY void mg_glMultiDrawElementsBaseVertex_compute(
// Bind index buffer and do draw
LOG_D("draw")
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, g_outputibo);
GLES.glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, g_outputibo);
CHECK_GL_ERROR_NO_INIT
glDrawElements(mode, total_indices, type, 0);
GLES.glDrawElements(mode, total_indices, type, 0);
// Restore states
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, ibo);
GLES.glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, ibo);
CHECK_GL_ERROR_NO_INIT
}