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Add 2D lights to OpenGL3 canvas renderer

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This is an initial implementation using the same single-pass approach as the RenderingDevice.
This commit is contained in:
clayjohn
2022-10-12 17:55:01 -07:00
parent 1baefceaba
commit e600fb93a5
11 changed files with 801 additions and 54 deletions
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45
drivers/gles3/rasterizer_canvas_gles3.h
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@@ -96,6 +96,33 @@ class RasterizerCanvasGLES3 : public RendererCanvasRender {
DEFAULT_MAX_LIGHTS_PER_RENDER = 256,
};
/******************/
/**** LIGHTING ****/
/******************/
struct CanvasLight {
RID texture;
};
RID_Owner<CanvasLight> canvas_light_owner;
struct LightUniform {
float matrix[8]; //light to texture coordinate matrix
float shadow_matrix[8]; //light to shadow coordinate matrix
float color[4];
uint8_t shadow_color[4];
uint32_t flags; //index to light texture
float shadow_pixel_size;
float height;
float position[2];
float shadow_z_far_inv;
float shadow_y_ofs;
float atlas_rect[4];
};
public:
enum {
BASE_UNIFORM_LOCATION = 0,
@@ -184,8 +211,8 @@ public:
RID canvas_shader_default_version;
uint32_t max_lights_per_render;
uint32_t max_lights_per_item;
uint32_t max_lights_per_render = 256;
uint32_t max_lights_per_item = 16;
uint32_t max_instances_per_batch = 512;
uint32_t max_instances_per_ubo = 16384;
uint32_t max_instance_buffer_size = 16384 * 128;
@@ -212,16 +239,22 @@ public:
const Item::Command *command = nullptr;
Item::Command::Type command_type = Item::Command::TYPE_ANIMATION_SLICE; // Can default to any type that doesn't form a batch.
uint32_t primitive_points = 0;
bool lights_disabled = false;
};
// DataBuffer contains our per-frame data. I.e. the resources that are updated each frame.
// We track them and ensure that they don't get reused until at least 2 frames have passed
// to avoid the GPU stalling to wait for a resource to become available.
struct DataBuffer {
GLuint ubo = 0;
GLuint light_ubo = 0;
GLuint state_ubo = 0;
uint64_t last_frame_used = -3;
GLsync fence = GLsync();
};
struct State {
GLuint canvas_state_buffer;
LocalVector<DataBuffer> canvas_instance_data_buffers;
LocalVector<Batch> canvas_instance_batches;
uint32_t current_buffer = 0;
@@ -230,6 +263,10 @@ public:
InstanceData *instance_data_array = nullptr;
LightUniform *light_uniforms = nullptr;
bool using_directional_lights = false;
RID current_tex = RID();
RS::CanvasItemTextureFilter current_filter_mode = RS::CANVAS_ITEM_TEXTURE_FILTER_MAX;
RS::CanvasItemTextureRepeat current_repeat_mode = RS::CANVAS_ITEM_TEXTURE_REPEAT_MAX;
@@ -282,7 +319,7 @@ public:
void _render_items(RID p_to_render_target, int p_item_count, const Transform2D &p_canvas_transform_inverse, Light *p_lights, uint32_t &r_last_index, bool p_to_backbuffer = false);
void _record_item_commands(const Item *p_item, const Transform2D &p_canvas_transform_inverse, Item *&current_clip, GLES3::CanvasShaderData::BlendMode p_blend_mode, Light *p_lights, uint32_t &r_index, bool &r_break_batch);
void _render_batch(Light *p_lights, uint32_t p_index);
void _bind_material(GLES3::CanvasMaterialData *p_material_data, CanvasShaderGLES3::ShaderVariant p_variant);
void _bind_material(GLES3::CanvasMaterialData *p_material_data, CanvasShaderGLES3::ShaderVariant p_variant, uint64_t p_specialization);
void _new_batch(bool &r_batch_broken, uint32_t &r_index);
void _add_to_batch(uint32_t &r_index, bool &r_batch_broken);
void _allocate_instance_data_buffer();