Implement glow/bloom on compatibility renderer

1 files changed, 69 insertions, 6 deletions

diff --git a/drivers/gles3/storage/texture_storage.cpp b/drivers/gles3/storage/texture_storage.cpp
index bd4793f4dc..e9df3c6fc8 100644
--- a/drivers/gles3/storage/texture_storage.cpp
+++ b/drivers/gles3/storage/texture_storage.cpp
@@ -1981,10 +1981,25 @@ void TextureStorage::_update_render_target(RenderTarget *rt) {
 
 	Config *config = Config::get_singleton();
 
-	rt->color_internal_format = rt->is_transparent ? GL_RGBA8 : GL_RGB10_A2;
-	rt->color_format = GL_RGBA;
-	rt->color_type = rt->is_transparent ? GL_UNSIGNED_BYTE : GL_UNSIGNED_INT_2_10_10_10_REV;
-	rt->image_format = Image::FORMAT_RGBA8;
+	if (rt->hdr) {
+		rt->color_internal_format = GL_RGBA16F;
+		rt->color_format = GL_RGBA;
+		rt->color_type = GL_FLOAT;
+		rt->color_format_size = 8;
+		rt->image_format = Image::FORMAT_RGBAF;
+	} else if (rt->is_transparent) {
+		rt->color_internal_format = GL_RGBA8;
+		rt->color_format = GL_RGBA;
+		rt->color_type = GL_UNSIGNED_BYTE;
+		rt->color_format_size = 4;
+		rt->image_format = Image::FORMAT_RGBA8;
+	} else {
+		rt->color_internal_format = GL_RGB10_A2;
+		rt->color_format = GL_RGBA;
+		rt->color_type = GL_UNSIGNED_INT_2_10_10_10_REV;
+		rt->color_format_size = 4;
+		rt->image_format = Image::FORMAT_RGBA8;
+	}
 
 	glDisable(GL_SCISSOR_TEST);
 	glColorMask(1, 1, 1, 1);
@@ -2023,7 +2038,7 @@ void TextureStorage::_update_render_target(RenderTarget *rt) {
 			texture->gl_set_filter(RS::CANVAS_ITEM_TEXTURE_FILTER_NEAREST);
 			texture->gl_set_repeat(RS::CANVAS_ITEM_TEXTURE_REPEAT_DISABLED);
 
-			GLES3::Utilities::get_singleton()->texture_allocated_data(rt->color, rt->size.x * rt->size.y * rt->view_count * 4, "Render target color texture");
+			GLES3::Utilities::get_singleton()->texture_allocated_data(rt->color, rt->size.x * rt->size.y * rt->view_count * rt->color_format_size, "Render target color texture");
 		}
 #ifndef IOS_ENABLED
 		if (use_multiview) {
@@ -2194,7 +2209,7 @@ void GLES3::TextureStorage::check_backbuffer(RenderTarget *rt, const bool uses_s
 		} else {
 			glTexImage2D(texture_target, 0, rt->color_internal_format, rt->size.x, rt->size.y, 0, rt->color_format, rt->color_type, nullptr);
 		}
-		GLES3::Utilities::get_singleton()->texture_allocated_data(rt->backbuffer, rt->size.x * rt->size.y * rt->view_count * 4, "Render target backbuffer color texture (3D)");
+		GLES3::Utilities::get_singleton()->texture_allocated_data(rt->backbuffer, rt->size.x * rt->size.y * rt->view_count * rt->color_format_size, "Render target backbuffer color texture (3D)");
 		glTexParameteri(texture_target, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
 		glTexParameteri(texture_target, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
 		glTexParameteri(texture_target, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
@@ -2548,6 +2563,54 @@ RS::ViewportMSAA TextureStorage::render_target_get_msaa(RID p_render_target) con
 	return rt->msaa;
 }
 
+void TextureStorage::render_target_set_use_hdr(RID p_render_target, bool p_use_hdr_2d) {
+	RenderTarget *rt = render_target_owner.get_or_null(p_render_target);
+	ERR_FAIL_NULL(rt);
+	ERR_FAIL_COND(rt->direct_to_screen);
+	if (p_use_hdr_2d == rt->hdr) {
+		return;
+	}
+
+	_clear_render_target(rt);
+	rt->hdr = p_use_hdr_2d;
+	_update_render_target(rt);
+}
+
+bool TextureStorage::render_target_is_using_hdr(RID p_render_target) const {
+	RenderTarget *rt = render_target_owner.get_or_null(p_render_target);
+	ERR_FAIL_NULL_V(rt, false);
+
+	return rt->hdr;
+}
+
+GLuint TextureStorage::render_target_get_color_internal_format(RID p_render_target) const {
+	RenderTarget *rt = render_target_owner.get_or_null(p_render_target);
+	ERR_FAIL_NULL_V(rt, GL_RGBA8);
+
+	return rt->color_internal_format;
+}
+
+GLuint TextureStorage::render_target_get_color_format(RID p_render_target) const {
+	RenderTarget *rt = render_target_owner.get_or_null(p_render_target);
+	ERR_FAIL_NULL_V(rt, GL_RGBA);
+
+	return rt->color_format;
+}
+
+GLuint TextureStorage::render_target_get_color_type(RID p_render_target) const {
+	RenderTarget *rt = render_target_owner.get_or_null(p_render_target);
+	ERR_FAIL_NULL_V(rt, GL_UNSIGNED_BYTE);
+
+	return rt->color_type;
+}
+
+uint32_t TextureStorage::render_target_get_color_format_size(RID p_render_target) const {
+	RenderTarget *rt = render_target_owner.get_or_null(p_render_target);
+	ERR_FAIL_NULL_V(rt, 4);
+
+	return rt->color_format_size;
+}
+
 void TextureStorage::render_target_request_clear(RID p_render_target, const Color &p_clear_color) {
 	RenderTarget *rt = render_target_owner.get_or_null(p_render_target);
 	ERR_FAIL_NULL(rt);