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2D GPU Particles working..

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This commit is contained in:
Juan Linietsky
2017-06-21 16:25:45 -03:00
parent 3c1fd26bb0
commit 95560e02c5
21 changed files with 1039 additions and 1340 deletions
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163
drivers/gles3/rasterizer_canvas_gles3.cpp
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@@ -28,6 +28,7 @@
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/
#include "rasterizer_canvas_gles3.h"
#include "servers/visual/visual_server_raster.h"
#include "global_config.h"
#include "os/os.h"
@@ -607,6 +608,133 @@ void RasterizerCanvasGLES3::_canvas_item_render_commands(Item *p_item, Item *cur
}
_draw_polygon(polygon->indices.ptr(), polygon->count, polygon->points.size(), polygon->points.ptr(), polygon->uvs.ptr(), polygon->colors.ptr(), polygon->colors.size() == 1);
} break;
case Item::Command::TYPE_PARTICLES: {
Item::CommandParticles *particles_cmd = static_cast<Item::CommandParticles *>(c);
RasterizerStorageGLES3::Particles *particles = storage->particles_owner.getornull(particles_cmd->particles);
if (!particles)
break;
glVertexAttrib4f(VS::ARRAY_COLOR, 1, 1, 1, 1); //not used, so keep white
VisualServerRaster::redraw_request();
storage->particles_request_process(particles_cmd->particles);
//enable instancing
state.canvas_shader.set_conditional(CanvasShaderGLES3::USE_INSTANCE_CUSTOM, true);
state.canvas_shader.set_conditional(CanvasShaderGLES3::USE_PARTICLES, true);
state.canvas_shader.set_conditional(CanvasShaderGLES3::USE_INSTANCING, true);
//reset shader and force rebind
state.using_texture_rect = true;
_set_texture_rect_mode(false);
RasterizerStorageGLES3::Texture *texture = _bind_canvas_texture(particles_cmd->texture, particles_cmd->normal_map);
if (texture) {
Size2 texpixel_size(1.0 / (texture->width / particles_cmd->h_frames), 1.0 / (texture->height / particles_cmd->v_frames));
state.canvas_shader.set_uniform(CanvasShaderGLES3::COLOR_TEXPIXEL_SIZE, texpixel_size);
} else {
state.canvas_shader.set_uniform(CanvasShaderGLES3::COLOR_TEXPIXEL_SIZE, Vector2(1.0, 1.0));
}
if (!particles->use_local_coords) {
Transform2D inv_xf;
inv_xf.set_axis(0, Vector2(particles->emission_transform.basis.get_axis(0).x, particles->emission_transform.basis.get_axis(0).y));
inv_xf.set_axis(1, Vector2(particles->emission_transform.basis.get_axis(1).x, particles->emission_transform.basis.get_axis(1).y));
inv_xf.set_origin(Vector2(particles->emission_transform.get_origin().x, particles->emission_transform.get_origin().y));
inv_xf.affine_invert();
state.canvas_shader.set_uniform(CanvasShaderGLES3::MODELVIEW_MATRIX, state.final_transform * inv_xf);
}
state.canvas_shader.set_uniform(CanvasShaderGLES3::H_FRAMES, particles_cmd->h_frames);
state.canvas_shader.set_uniform(CanvasShaderGLES3::V_FRAMES, particles_cmd->v_frames);
glBindVertexArray(data.particle_quad_array); //use particle quad array
glBindBuffer(GL_ARRAY_BUFFER, particles->particle_buffers[0]); //bind particle buffer
int stride = sizeof(float) * 4 * 6;
int amount = particles->amount;
if (particles->draw_order != VS::PARTICLES_DRAW_ORDER_LIFETIME) {
glEnableVertexAttribArray(8); //xform x
glVertexAttribPointer(8, 4, GL_FLOAT, GL_FALSE, stride, ((uint8_t *)NULL) + sizeof(float) * 4 * 3);
glVertexAttribDivisor(8, 1);
glEnableVertexAttribArray(9); //xform y
glVertexAttribPointer(9, 4, GL_FLOAT, GL_FALSE, stride, ((uint8_t *)NULL) + sizeof(float) * 4 * 4);
glVertexAttribDivisor(9, 1);
glEnableVertexAttribArray(10); //xform z
glVertexAttribPointer(10, 4, GL_FLOAT, GL_FALSE, stride, ((uint8_t *)NULL) + sizeof(float) * 4 * 5);
glVertexAttribDivisor(10, 1);
glEnableVertexAttribArray(11); //color
glVertexAttribPointer(11, 4, GL_FLOAT, GL_FALSE, stride, ((uint8_t *)NULL) + 0);
glVertexAttribDivisor(11, 1);
glEnableVertexAttribArray(12); //custom
glVertexAttribPointer(12, 4, GL_FLOAT, GL_FALSE, stride, ((uint8_t *)NULL) + sizeof(float) * 4 * 2);
glVertexAttribDivisor(12, 1);
glDrawArraysInstanced(GL_TRIANGLE_FAN, 0, 4, amount);
} else {
//split
int stride = sizeof(float) * 4 * 6;
int split = int(Math::ceil(particles->phase * particles->amount));
if (amount - split > 0) {
glEnableVertexAttribArray(8); //xform x
glVertexAttribPointer(8, 4, GL_FLOAT, GL_FALSE, stride, ((uint8_t *)NULL) + stride * split + sizeof(float) * 4 * 3);
glVertexAttribDivisor(8, 1);
glEnableVertexAttribArray(9); //xform y
glVertexAttribPointer(9, 4, GL_FLOAT, GL_FALSE, stride, ((uint8_t *)NULL) + stride * split + sizeof(float) * 4 * 4);
glVertexAttribDivisor(9, 1);
glEnableVertexAttribArray(10); //xform z
glVertexAttribPointer(10, 4, GL_FLOAT, GL_FALSE, stride, ((uint8_t *)NULL) + stride * split + sizeof(float) * 4 * 5);
glVertexAttribDivisor(10, 1);
glEnableVertexAttribArray(11); //color
glVertexAttribPointer(11, 4, GL_FLOAT, GL_FALSE, stride, ((uint8_t *)NULL) + stride * split + 0);
glVertexAttribDivisor(11, 1);
glEnableVertexAttribArray(12); //custom
glVertexAttribPointer(12, 4, GL_FLOAT, GL_FALSE, stride, ((uint8_t *)NULL) + stride * split + sizeof(float) * 4 * 2);
glVertexAttribDivisor(12, 1);
glDrawArraysInstanced(GL_TRIANGLE_FAN, 0, 4, amount - split);
}
if (split > 0) {
glEnableVertexAttribArray(8); //xform x
glVertexAttribPointer(8, 4, GL_FLOAT, GL_FALSE, stride, ((uint8_t *)NULL) + sizeof(float) * 4 * 3);
glVertexAttribDivisor(8, 1);
glEnableVertexAttribArray(9); //xform y
glVertexAttribPointer(9, 4, GL_FLOAT, GL_FALSE, stride, ((uint8_t *)NULL) + sizeof(float) * 4 * 4);
glVertexAttribDivisor(9, 1);
glEnableVertexAttribArray(10); //xform z
glVertexAttribPointer(10, 4, GL_FLOAT, GL_FALSE, stride, ((uint8_t *)NULL) + sizeof(float) * 4 * 5);
glVertexAttribDivisor(10, 1);
glEnableVertexAttribArray(11); //color
glVertexAttribPointer(11, 4, GL_FLOAT, GL_FALSE, stride, ((uint8_t *)NULL) + 0);
glVertexAttribDivisor(11, 1);
glEnableVertexAttribArray(12); //custom
glVertexAttribPointer(12, 4, GL_FLOAT, GL_FALSE, stride, ((uint8_t *)NULL) + sizeof(float) * 4 * 2);
glVertexAttribDivisor(12, 1);
glDrawArraysInstanced(GL_TRIANGLE_FAN, 0, 4, split);
}
}
glBindVertexArray(0);
state.canvas_shader.set_conditional(CanvasShaderGLES3::USE_INSTANCE_CUSTOM, false);
state.canvas_shader.set_conditional(CanvasShaderGLES3::USE_INSTANCING, false);
state.canvas_shader.set_conditional(CanvasShaderGLES3::USE_PARTICLES, false);
state.using_texture_rect = true;
_set_texture_rect_mode(false);
} break;
case Item::Command::TYPE_CIRCLE: {
@@ -1351,7 +1479,39 @@ void RasterizerCanvasGLES3::initialize() {
glBindVertexArray(0);
glBindBuffer(GL_ARRAY_BUFFER, 0); //unbind
}
{
//particle quad buffers
glGenBuffers(1, &data.particle_quad_vertices);
glBindBuffer(GL_ARRAY_BUFFER, data.particle_quad_vertices);
{
//quad of size 1, with pivot on the center for particles, then regular UVS. Color is general plus fetched from particle
const float qv[16] = {
-0.5, -0.5,
0.0, 0.0,
-0.5, 0.5,
0.0, 1.0,
0.5, 0.5,
1.0, 1.0,
0.5, -0.5,
1.0, 0.0
};
glBufferData(GL_ARRAY_BUFFER, sizeof(float) * 16, qv, GL_STATIC_DRAW);
}
glBindBuffer(GL_ARRAY_BUFFER, 0); //unbind
glGenVertexArrays(1, &data.particle_quad_array);
glBindVertexArray(data.particle_quad_array);
glBindBuffer(GL_ARRAY_BUFFER, data.particle_quad_vertices);
glEnableVertexAttribArray(VS::ARRAY_VERTEX);
glVertexAttribPointer(VS::ARRAY_VERTEX, 2, GL_FLOAT, GL_FALSE, sizeof(float) * 4, 0);
glEnableVertexAttribArray(VS::ARRAY_TEX_UV);
glVertexAttribPointer(VS::ARRAY_TEX_UV, 2, GL_FLOAT, GL_FALSE, sizeof(float) * 4, (float *)0 + 2);
glBindVertexArray(0);
glBindBuffer(GL_ARRAY_BUFFER, 0); //unbind
}
{
uint32_t poly_size = GLOBAL_DEF("rendering/buffers/canvas_polygon_buffer_size_kb", 128);
@@ -1428,6 +1588,9 @@ void RasterizerCanvasGLES3::finalize() {
glDeleteBuffers(1, &data.canvas_quad_vertices);
glDeleteVertexArrays(1, &data.canvas_quad_array);
glDeleteBuffers(1, &data.canvas_quad_vertices);
glDeleteVertexArrays(1, &data.canvas_quad_array);
glDeleteVertexArrays(1, &data.polygon_buffer_pointer_array);
}