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Add 2D shadows and canvas SDF to OpenGL3 renderer

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This is an initial implementation based on the current RD implementation

Performance will improve later
This commit is contained in:
clayjohn
2022-10-18 17:59:31 -07:00
parent 282e50ac88
commit 2ec234ff67
19 changed files with 1322 additions and 223 deletions
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drivers/gles3/storage/texture_storage.cpp
+266 -50
View File
@@ -207,6 +207,11 @@ TextureStorage::TextureStorage() {
glBindTexture(GL_TEXTURE_2D, 0);
{
sdf_shader.shader.initialize();
sdf_shader.shader_version = sdf_shader.shader.version_create();
}
#ifdef GLES_OVER_GL
glEnable(GL_PROGRAM_POINT_SIZE);
#endif
@@ -222,6 +227,7 @@ TextureStorage::~TextureStorage() {
texture_atlas.texture = 0;
glDeleteFramebuffers(1, &texture_atlas.framebuffer);
texture_atlas.framebuffer = 0;
sdf_shader.shader.version_free(sdf_shader.shader_version);
}
//TODO, move back to storage
@@ -276,55 +282,6 @@ void TextureStorage::canvas_texture_set_texture_repeat(RID p_canvas_texture, RS:
ct->texture_repeat = p_repeat;
}
/* CANVAS SHADOW */
RID TextureStorage::canvas_light_shadow_buffer_create(int p_width) {
Config *config = Config::get_singleton();
CanvasLightShadow *cls = memnew(CanvasLightShadow);
if (p_width > config->max_texture_size) {
p_width = config->max_texture_size;
}
cls->size = p_width;
cls->height = 16;
glActiveTexture(GL_TEXTURE0);
glGenFramebuffers(1, &cls->fbo);
glBindFramebuffer(GL_FRAMEBUFFER, cls->fbo);
glGenRenderbuffers(1, &cls->depth);
glBindRenderbuffer(GL_RENDERBUFFER, cls->depth);
glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH_COMPONENT16, cls->size, cls->height);
glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, cls->depth);
glGenTextures(1, &cls->distance);
glBindTexture(GL_TEXTURE_2D, cls->distance);
if (config->use_rgba_2d_shadows) {
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, cls->size, cls->height, 0, GL_RGBA, GL_UNSIGNED_BYTE, nullptr);
} else {
glTexImage2D(GL_TEXTURE_2D, 0, GL_R32F, cls->size, cls->height, 0, GL_RED, GL_FLOAT, nullptr);
}
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, cls->distance, 0);
GLenum status = glCheckFramebufferStatus(GL_FRAMEBUFFER);
//printf("errnum: %x\n",status);
glBindFramebuffer(GL_FRAMEBUFFER, GLES3::TextureStorage::system_fbo);
if (status != GL_FRAMEBUFFER_COMPLETE) {
memdelete(cls);
ERR_FAIL_COND_V(status != GL_FRAMEBUFFER_COMPLETE, RID());
}
return canvas_light_shadow_owner.make_rid(cls);
}
/* Texture API */
Ref<Image> TextureStorage::_get_gl_image_and_format(const Ref<Image> &p_image, Image::Format p_format, Image::Format &r_real_format, GLenum &r_gl_format, GLenum &r_gl_internal_format, GLenum &r_gl_type, bool &r_compressed, bool p_force_decompress) const {
@@ -1599,6 +1556,7 @@ void TextureStorage::_clear_render_target(RenderTarget *rt) {
rt->backbuffer = 0;
rt->backbuffer_fbo = 0;
}
_render_target_clear_sdf(rt);
}
RID TextureStorage::render_target_create() {
@@ -1784,13 +1742,271 @@ void TextureStorage::render_target_do_clear_request(RID p_render_target) {
}
void TextureStorage::render_target_set_sdf_size_and_scale(RID p_render_target, RS::ViewportSDFOversize p_size, RS::ViewportSDFScale p_scale) {
RenderTarget *rt = render_target_owner.get_or_null(p_render_target);
ERR_FAIL_COND(!rt);
if (rt->sdf_oversize == p_size && rt->sdf_scale == p_scale) {
return;
}
rt->sdf_oversize = p_size;
rt->sdf_scale = p_scale;
_render_target_clear_sdf(rt);
}
Rect2i TextureStorage::_render_target_get_sdf_rect(const RenderTarget *rt) const {
Size2i margin;
int scale;
switch (rt->sdf_oversize) {
case RS::VIEWPORT_SDF_OVERSIZE_100_PERCENT: {
scale = 100;
} break;
case RS::VIEWPORT_SDF_OVERSIZE_120_PERCENT: {
scale = 120;
} break;
case RS::VIEWPORT_SDF_OVERSIZE_150_PERCENT: {
scale = 150;
} break;
case RS::VIEWPORT_SDF_OVERSIZE_200_PERCENT: {
scale = 200;
} break;
default: {
}
}
margin = (rt->size * scale / 100) - rt->size;
Rect2i r(Vector2i(), rt->size);
r.position -= margin;
r.size += margin * 2;
return r;
}
Rect2i TextureStorage::render_target_get_sdf_rect(RID p_render_target) const {
return Rect2i();
const RenderTarget *rt = render_target_owner.get_or_null(p_render_target);
ERR_FAIL_COND_V(!rt, Rect2i());
return _render_target_get_sdf_rect(rt);
}
void TextureStorage::render_target_mark_sdf_enabled(RID p_render_target, bool p_enabled) {
RenderTarget *rt = render_target_owner.get_or_null(p_render_target);
ERR_FAIL_COND(!rt);
rt->sdf_enabled = p_enabled;
}
bool TextureStorage::render_target_is_sdf_enabled(RID p_render_target) const {
const RenderTarget *rt = render_target_owner.get_or_null(p_render_target);
ERR_FAIL_COND_V(!rt, false);
return rt->sdf_enabled;
}
GLuint TextureStorage::render_target_get_sdf_texture(RID p_render_target) {
RenderTarget *rt = render_target_owner.get_or_null(p_render_target);
ERR_FAIL_COND_V(!rt, 0);
if (rt->sdf_texture_read == 0) {
Texture *texture = texture_owner.get_or_null(default_gl_textures[DEFAULT_GL_TEXTURE_BLACK]);
return texture->tex_id;
}
return rt->sdf_texture_read;
}
void TextureStorage::_render_target_allocate_sdf(RenderTarget *rt) {
ERR_FAIL_COND(rt->sdf_texture_write_fb != 0);
Size2i size = _render_target_get_sdf_rect(rt).size;
glGenTextures(1, &rt->sdf_texture_write);
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, rt->sdf_texture_write);
glTexImage2D(GL_TEXTURE_2D, 0, GL_R8, size.width, size.height, 0, GL_RED, GL_UNSIGNED_BYTE, nullptr);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_BASE_LEVEL, 0);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL, 1);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glGenFramebuffers(1, &rt->sdf_texture_write_fb);
glBindFramebuffer(GL_FRAMEBUFFER, rt->sdf_texture_write_fb);
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, rt->sdf_texture_write, 0);
int scale;
switch (rt->sdf_scale) {
case RS::VIEWPORT_SDF_SCALE_100_PERCENT: {
scale = 100;
} break;
case RS::VIEWPORT_SDF_SCALE_50_PERCENT: {
scale = 50;
} break;
case RS::VIEWPORT_SDF_SCALE_25_PERCENT: {
scale = 25;
} break;
default: {
scale = 100;
} break;
}
rt->process_size = size * scale / 100;
rt->process_size.x = MAX(rt->process_size.x, 1);
rt->process_size.y = MAX(rt->process_size.y, 1);
glGenTextures(2, rt->sdf_texture_process);
glBindTexture(GL_TEXTURE_2D, rt->sdf_texture_process[0]);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RG16I, rt->process_size.width, rt->process_size.height, 0, GL_RG_INTEGER, GL_SHORT, nullptr);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_BASE_LEVEL, 0);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL, 1);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glBindTexture(GL_TEXTURE_2D, rt->sdf_texture_process[1]);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RG16I, rt->process_size.width, rt->process_size.height, 0, GL_RG_INTEGER, GL_SHORT, nullptr);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_BASE_LEVEL, 0);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL, 1);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glGenTextures(1, &rt->sdf_texture_read);
glBindTexture(GL_TEXTURE_2D, rt->sdf_texture_read);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, rt->process_size.width, rt->process_size.height, 0, GL_RGBA, GL_UNSIGNED_BYTE, nullptr);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_BASE_LEVEL, 0);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL, 1);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
}
void TextureStorage::_render_target_clear_sdf(RenderTarget *rt) {
if (rt->sdf_texture_write_fb != 0) {
glDeleteTextures(1, &rt->sdf_texture_read);
glDeleteTextures(1, &rt->sdf_texture_write);
glDeleteTextures(2, rt->sdf_texture_process);
glDeleteFramebuffers(1, &rt->sdf_texture_write_fb);
rt->sdf_texture_read = 0;
rt->sdf_texture_write = 0;
rt->sdf_texture_process[0] = 0;
rt->sdf_texture_process[1] = 0;
rt->sdf_texture_write_fb = 0;
}
}
GLuint TextureStorage::render_target_get_sdf_framebuffer(RID p_render_target) {
RenderTarget *rt = render_target_owner.get_or_null(p_render_target);
ERR_FAIL_COND_V(!rt, 0);
if (rt->sdf_texture_write_fb == 0) {
_render_target_allocate_sdf(rt);
}
return rt->sdf_texture_write_fb;
}
void TextureStorage::render_target_sdf_process(RID p_render_target) {
CopyEffects *copy_effects = CopyEffects::get_singleton();
RenderTarget *rt = render_target_owner.get_or_null(p_render_target);
ERR_FAIL_COND(!rt);
ERR_FAIL_COND(rt->sdf_texture_write_fb == 0);
Rect2i r = _render_target_get_sdf_rect(rt);
Size2i size = r.size;
int32_t shift = 0;
bool shrink = false;
switch (rt->sdf_scale) {
case RS::VIEWPORT_SDF_SCALE_50_PERCENT: {
size[0] >>= 1;
size[1] >>= 1;
shift = 1;
shrink = true;
} break;
case RS::VIEWPORT_SDF_SCALE_25_PERCENT: {
size[0] >>= 2;
size[1] >>= 2;
shift = 2;
shrink = true;
} break;
default: {
};
}
GLuint temp_fb;
glGenFramebuffers(1, &temp_fb);
glBindFramebuffer(GL_FRAMEBUFFER, temp_fb);
// Load
CanvasSdfShaderGLES3::ShaderVariant variant = shrink ? CanvasSdfShaderGLES3::MODE_LOAD_SHRINK : CanvasSdfShaderGLES3::MODE_LOAD;
sdf_shader.shader.version_bind_shader(sdf_shader.shader_version, variant);
sdf_shader.shader.version_set_uniform(CanvasSdfShaderGLES3::BASE_SIZE, r.size, sdf_shader.shader_version, variant);
sdf_shader.shader.version_set_uniform(CanvasSdfShaderGLES3::SIZE, size, sdf_shader.shader_version, variant);
sdf_shader.shader.version_set_uniform(CanvasSdfShaderGLES3::STRIDE, 0, sdf_shader.shader_version, variant);
sdf_shader.shader.version_set_uniform(CanvasSdfShaderGLES3::SHIFT, shift, sdf_shader.shader_version, variant);
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, rt->sdf_texture_write);
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, rt->sdf_texture_process[0], 0);
glViewport(0, 0, size.width, size.height);
glEnable(GL_SCISSOR_TEST);
glScissor(0, 0, size.width, size.height);
copy_effects->draw_screen_triangle();
// Process
int stride = nearest_power_of_2_templated(MAX(size.width, size.height) / 2);
variant = CanvasSdfShaderGLES3::MODE_PROCESS;
sdf_shader.shader.version_bind_shader(sdf_shader.shader_version, variant);
sdf_shader.shader.version_set_uniform(CanvasSdfShaderGLES3::BASE_SIZE, r.size, sdf_shader.shader_version, variant);
sdf_shader.shader.version_set_uniform(CanvasSdfShaderGLES3::SIZE, size, sdf_shader.shader_version, variant);
sdf_shader.shader.version_set_uniform(CanvasSdfShaderGLES3::STRIDE, stride, sdf_shader.shader_version, variant);
sdf_shader.shader.version_set_uniform(CanvasSdfShaderGLES3::SHIFT, shift, sdf_shader.shader_version, variant);
bool swap = false;
//jumpflood
while (stride > 0) {
glBindTexture(GL_TEXTURE_2D, 0);
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, rt->sdf_texture_process[swap ? 0 : 1], 0);
glBindTexture(GL_TEXTURE_2D, rt->sdf_texture_process[swap ? 1 : 0]);
sdf_shader.shader.version_set_uniform(CanvasSdfShaderGLES3::STRIDE, stride, sdf_shader.shader_version, variant);
copy_effects->draw_screen_triangle();
stride /= 2;
swap = !swap;
}
// Store
variant = shrink ? CanvasSdfShaderGLES3::MODE_STORE_SHRINK : CanvasSdfShaderGLES3::MODE_STORE;
sdf_shader.shader.version_bind_shader(sdf_shader.shader_version, variant);
sdf_shader.shader.version_set_uniform(CanvasSdfShaderGLES3::BASE_SIZE, r.size, sdf_shader.shader_version, variant);
sdf_shader.shader.version_set_uniform(CanvasSdfShaderGLES3::SIZE, size, sdf_shader.shader_version, variant);
sdf_shader.shader.version_set_uniform(CanvasSdfShaderGLES3::STRIDE, stride, sdf_shader.shader_version, variant);
sdf_shader.shader.version_set_uniform(CanvasSdfShaderGLES3::SHIFT, shift, sdf_shader.shader_version, variant);
glBindTexture(GL_TEXTURE_2D, 0);
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, rt->sdf_texture_read, 0);
glBindTexture(GL_TEXTURE_2D, rt->sdf_texture_process[swap ? 1 : 0]);
copy_effects->draw_screen_triangle();
glBindTexture(GL_TEXTURE_2D, 0);
glBindFramebuffer(GL_FRAMEBUFFER, system_fbo);
glDeleteFramebuffers(1, &temp_fb);
glDisable(GL_SCISSOR_TEST);
}
void TextureStorage::render_target_copy_to_back_buffer(RID p_render_target, const Rect2i &p_region, bool p_gen_mipmaps) {